Download Kenwood - TH-K4 Service manual

430MHz FM TRANSCEIVER
TH-K4AT/K4E
SERVICE MANUAL
© 2003-9 PRINTED IN JAPAN
B51-8660-00 (S) 497
Helical Antenna
(T90-1019-25)
Helical Antenna
(T90-1019-25)
Knob (ENC)
(K29-5159-03)
Knob (ENC)
(K29-5159-03)
Knob (VOL)
(K29-5150-03)
Front glass
(B10-2746-03)
Knob
(PTT/LAMP/MON)
(K29-9274-03)
Cap
(SP/MIC/DC IN)
(B09-0675-03)
Cabinet assy
(16key)
(A02-3822-23)
Knob (VOL)
(K29-5150-03)
Front glass
(B10-2746-03)
Knob
(PTT/LAMP/MON)
(K29-9274-03)
Cap
(SP/MIC/DC IN)
(B09-0675-03)
Cabinet assy
(4key)
(A02-3823-23)
Key top (4key)
(K29-9276-02)
Key top (16key)
(K29-9272-02)
TH-K4AT
TH-K4E
CONTENTS
DISASSEMBLY FOR REPAIR ................................... 2
CIRCUIT DESCRIPTION ............................................ 6
SEMICONDUCTOR DATA ...................................... 14
COMPONENTS DESCRIPTION .............................. 15
PARTS LIST ............................................................. 17
EXPLODED VIEW .................................................... 23
PACKING ................................................................. 25
ADJUSTMENT ........................................................ 27
TERMINAL FUNCTION ........................................... 43
PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) ................... 44
TX-RX UNIT (X57-675X-XX) (B/3),(C/3) .......... 48
SCHEMATIC DIAGRAM .......................................... 50
LEVEL DIAGRAM .................................................... 55
BLOCK DIAGRAM ................................................... 56
BC-21 (WALL CHARGER) ....................................... 58
PB-43N (Ni-MH BATTERY PACK) .......................... 58
BT-14 (BATTERY CASE) ......................................... 59
PG-4Y (PROGRAMMING INTERFACE CABLE) ..... 59
MCP-1A (MEMORY CONTROL PROGRAM) ......... 59
SPECIFICATIONS ................................. BACK COVER
TH-K4AT/K4E
DISASSEMBLY FOR REPAIR
How to remove the case assembly from the
chassis
c
Remove two screws (z) holding the chassis.
Pull out two knobs (x) and remove two round nuts (c).
Pull out the SP and MIC parts of the cap from jacks (v).
Turn the unit over with the bottom of the chassis facing
upwards, and remove the chassis ( n ) from the case
assembly (b).
5. Remove the speaker lead (m) from the connector (CN2) of
the TX-RX PC board (TX-RX unit A/3).
1.
2.
3.
4.
x
c
v
m
b
How to remove the PC board
■ Numeric key PC board (TX-RX unit B/3)
1. Remove three screws (,) on the numeric key PC board.
2. Lift the numeric key PC board and remove it from the
connector (CN9) of the TX-RX PC board (.).
,
,
TX-RX unit (B/3)
■ PTT PC board (TX-RX unit C/3)
3. Remove one screw on the PTT PC board (/).
4. Pull the PTT PC board to the left and remove it from the
connector (CN6) of the TX-RX PC board (TX-RX unit A/3)
(Ω).
.
ç
■ TX-RX PC board (TX-RX unit A/3)
5. Remove the SP/MIC jack cover (≈).
6. Remove two screws ( ç ) holding the shield
cover (antenna terminal section).
7. Remove two screws ( √ ) holding the shield
cover (final amplifier section).
8. Remove eight screws (∫ ) on the TX-RX PC
board.
9. Absorb solder from the antenna terminal (~)
with a solder absorber.
Note: Do not melt the shadow plate (µ) when
moving the tip of the solder absorber close
to the antenna terminal.
√
TX-RX unit (C/3)
/
Ω
∫
∫ ∫
µ
∫
∫
CN6
CN2
≈
∫
TX-RX unit (A/3)
CN9
10. Remove the TX-RX PC board from the chassis, then remove
the encoder volume FPC (≤) from the flat cable connector
of the TX-RX PC board.
~
≤
n
z
2
x
TH-K4AT/K4E
DISASSEMBLY FOR REPAIR
Soldering the antenna terminal
1. With the shield cover removed from the antenna terminal
section, install two screws on the PC board and bring the
PC board into contact with the chassis (z).
2. Solder the antenna terminal with a soldering iron (x).
4. Apply the tips of soldering irons to all the four pins of the final
FET at the same time (c), heat them sufficiently, and remove
the final FET (v). (Two persons should be required to do this.)
v
x
c
z
5. Remove all PC boards from the chassis.
6. Confirm that there is no space between the radiation plate
installed on the foil side of the TX-RX PC board (TX-RX unit
A/3) and the PC board (b). If there is any space between
the radiation plate and PC board, eliminate it by applying
the tip of the soldering iron to the radiation plate.
3. Remove the two screws installed in step 1 above, and install
the two screws again on the PC board together with the
shield cover (c).
b
Radiation plate
c
TX-RX PC board
7. Apply the tip of the soldering iron to the installation side of the
radiation plate of the TX-RX PC board, put a little amount of
solder to the radiation plate that is seen through a square hole
in the final FET installation section and melt the solder (n).
8. When the solder in step 7 is melted, place the final FET on
the PC board by aligning it with the silk of the final FET
installation section of the PC board (m).
Replacing the final FET (Q12)
1. Remove the two screws holding the shield cover of the
final FET section (z).
2. Remove solder from the shield cover completely with a
solder absorber.
3. Remove the shield cover (x).
m
n
z
x
This illustration is
M2 type.
9. Release the soldering iron and confirm that the final FET
and radiation plate have been soldered.
10. Solder the four pins of the final FET with the soldering iron.
11. Install all the PC boards.
12. Reinstall the shield cover removed in step 3 above in its
original position and install two screws.
13. Solder the shield cover to the PC board.
14. Install the chassis on the case assembly and assemble them.
15. Readjust transmission power.
Note: Since the FET is sensitive to static electricity, always
wear a grounding band. Use a highly insulated ceramic
heater solder iron.
3
TH-K4AT/K4E
DISASSEMBLY FOR REPAIR
Special care and attention required for assembly
1. Gluing to the key top (MIC element section)
You must also glue on the speaker storage area and heap
the glue up until wealthy glued on the speaker storage area
and the key top for waterproofing the MIC element side of
the key top. (Fig. 1)
(2) By pressing the LCD hardware fixture from the component
side of the TX-RX PCB, you must bent all 4 tabs of the LCD
hardware fixture being visible from the foil side until the
bases of each tabs are folded at least 45 degrees (Fig. 3). If
the bending angle of the tabs of the LCD hardware fixture
is less than 45 degrees, a display error may occur.
Heap the glue up until wealthy glued on the speaker
storage area and the key top (MIC element section).
Min 45
degrees
Bending position
NG
NG
Fig. 1
2. Bending the LCD hardware fixture (J21-8456-03) tabs
Fig. 3
(1) Insert the tabs of the LCD hardware fixture into four holes
in the LCD installing position of the TX-RX PCB (TX-RX unit
A/3). (Fig. 2)
3. PTT PCB (TX-RX unit C/3) installation procedure
Fig. 2
Installing the PTT PCB on the TX-RX PCB and chassis are
as follows:
(1) Insert the PTT PCB connector (CN7) into the TX-RX PCB
connector (CN6) lightly.
(2) Push three parts of the PTT PCB to contact tightly with the
chassis. There may be a small gap between the connectors.
(Fig. 4)
Note: A double-side adhesive tape (J99-0376-04) is used
behind the PTT switch. When reassembling the PTT
PCB to the chassis, press the PTT PCB (under the PTT
switch) so that the tape hold the PCB and chassis
securely.
PTT PCB (C/3)
Chassis
CN6
OK
A bit
clearance
CN7
PTT switch
Push three parts of the PTT PCB
to contact tightly with the chassis.
Chassis
PTT PCB (C/3)
CN6
NG
No
clearance
PTT switch
CN7
Fig. 4
(3) Tighten one screw in the PTT PCB.
4
TH-K4AT/K4E
DISASSEMBLY FOR REPAIR
4. Packing (G53-1572-02) TX/BUSY lamp installation
procedure
(1) To assure waterproofing, install the packing in the chassis
groove as shown in Fig. 5. (z)
(2) Install the packing TX/BUSY lamp section on the chassis.
(x )
z
6. Cautions for installing the chassis on the case assembly
(1) Verify that the packing (G53-1572-02) TX/BUSY lamp section
is has been past through the hole in the illumination guide
section on the top of the case assembly. (Fig. 7)
OK
Packing
PT
T
LOW
LAM
P
Chassis
NG
The packing TX/BUSY lamp section is has
been past through the hole in the illumination
guide section on the top of the case assembly.
x
Packing
Fig. 7
(2) Align the speaker lead as shown fig.8. Do not place the
leads over the key top section, LCD section or SP/MIC/DC
IN cap section.
Chassis
Fig. 5
5. Packing (G53-1572-02) bottom installation procedure
(1) Before installing the numeric key PCB (TX-RX unit B/3) on
the chassis, push three parts of the packing to contact tightly
with the chassis as shown in Fig. 6. If the packing is not in
contact with the chassis, there may be a gap between the
transceiver bottom case assembly and the battery, and
water may enter through the gap.
OK
Do not fix this part of the
key top to the rib of the
case assembly.
NG
Fig. 8
7. Cautions for installing the key top on the case assembly
Push three parts of the packing to
contact tightly with the chassis.
Fig. 6
Clearance NG
(1) Install the key top keypad section and the power switch
section on the rib of the case assembly.
(2) Do not fix the part between the key top keypad section and
the power switch section to the rib of the case assembly,
but install it as shown in Fig. 8.
5
TH-K4AT/K4E
CIRCUIT DESCRIPTION
Frequency Configuration
■ First Mixer
The frequency configuration is shown in Figure 1 and
Table 1.
The received signal passing through the band-pass filter
(L32, L34) is mixed with the first local signal generated by the
VCO by the first mixer (Q16) to produce a first IF signal (38.85
MHz) (Lower heterodyne).
The first IF signal passes through a MCF (Monolithic crystal
filter: XF1) to remove unwanted components.
The first IF signal passing through the MCF (XF1) is amplified
by an IF amplifier (Q24) and the resulting signal enters the FM
IC (IC3).
ANT
1st MIX
ANT
SW
450kHz
CF
TX/RX : 400.000~469.995MHz(M2)
430.000~439.995MHz(E)
SP
MCF
RF
AMP
MIX, IF,
DET
38.85MHz
38.4MHz
Tripler
x3
FINAL
361.150~431.145MHz(M2)
391.150~401.145MHz(E)
DRIVE
AF
AMP
PRE
DRIVE 400.000~469.995MHz(M2)
TCXO 12.8MHz
MIC
PLL
VCO
MIC
AMP
430.000~439.995MHz(E)
Fig. 1 Frequency configuration
Double super heterodyne
1st IF Frequency 38.85MHz (Lower)
2nd IF Frequency 450kHz (Lower)
Transmission method VCO direct oscillation amplification
Modulation
Variable reactance phase modulation
Reception method
Table 1 Basic configuration
Receiver System
■ Front End
The received signal from the antenna passes through a lowpass filter and then through a transmission/reception switching
circuit (antenna switch) and enters the band-pass filter (L40,
L41, L38).
The signal passing through the band-pass filter (L40, L41,
L38) is amplified by with an RF amplifier (Q17), passes through
a band-pass filter (L32, L34) and enters the first mixer (Q16).
These band-pass filters are tuned to a desired frequency
by varicaps (D21, D20, D19, D18).
A tuning voltage corresponding to the desired signal is
applied to each varicap through the BPF/APC terminal (pin 6)
of the MPU (IC8) to tune to the receive frequency.
Item
Nominal center frequency (fo)
Pass bandwidth
Attenuation bandwidth
Ultimate attenuation
Spurious response
Ripple
Insertion loss
Terminating impedance
Rating
38.85MHz
±6.0kHz or more at 3dB
±25kHz or less at 35dB
70dB or more (fo –910 kHz)
40dB or more (fo +1MHz)
1dB or less
4dB or less
610Ω ±5% // 3pF ±0.5pF
Table 2 MCF (L71-0619-05) characteristics (TX-RX unit XF1)
Item
Nominal center frequency (fo)
3dB bandwidth
50dB bandwidth
Ripple
Guaranteed attenuation
Insertion loss
I/O matching impedance
Rating
450kHz
±6.5kHz or more
±15.5kHz or less
2dB or less (fo ±6.5kHz)
55dB or more
(fo ±18kHz to ±33kHz)
50dB or more (fo ±100kHz)
4dB or less
1.5kΩ
Table 3 Ceramic filter (L72-0968-05) characteristics (TX-RX unit CF1)
ANT
BPF
RF AMP
L41,L40,L38 Q17
LPF
BPF
MIXER
L32,L34 Q16
MCF
XF1
IF AMP
Q24
ANT
SW
D20
D19
LV
6
BPF/APC
Tuning voltage
MPU
IC8
6
Tripler
x3
Q23
TCXO
X1
5R
1st Local OSC
(PLL)
VCO
2nd Local OSC
D18
5R
PLL
AF AMP
IC6
IF AMP,
DET
38.85MHz
D21
FM IC
IC3
Fig. 2 Receiver section configuration
12.8MHz
SP
TH-K4AT/K4E
CIRCUIT DESCRIPTION
■ IF Circuit
FM IC and band-pass filter consisting of R125, R126, R135,
C173, C174. The noise component is rectified in the FM IC to
produce a DC voltage, which is output from the N-REC terminal
(pin 14) of the FM IC as squelch voltage.
The squelch voltage enters the SQ terminal (pin 48) of the
MPU (IC8) and is compared with the reference voltage preset
in the MPU to control audio signal ON/OFF.
When "L" is output from the AFM terminal (pin 9) of the MPU,
the AF mute switch (Q20) is activated to mute the audio signal.
The first IF signal (38.85 MHz) amplified by the IF amplifier (Q24)
and the second IF signal (38.4 MHz) generated by tripling the 12.8
MHz reference oscillator frequency of the TCXO (X1) by Q23, are
mixed in the FM IC to produce a second IF signal (450 kHz) (Lower
heterodyne).
The second IF signal passes through a ceramic filter (CF1)
to remove unwanted components.
The second IF signal passing through the ceramic filter (CF1)
passes through the IF amplifier in the FM IC again and is
detected to produced an audio signal.
■ S Meter Circuit
The S meter voltage is output from the RSSI terminal (pin
12) of the FM IC (IC3) and input to the SM terminal (pin 49) of
the MPU. Then the voltage is converted from analog to digital
in the MPU to control the S meter display on the LCD.
■ Squelch and Mute Circuit
A noise component is obtained by passing FM detection
output (FM IC pin 9) through an operational amplifier in the
VOL IN
AFM
IC8
MPU
SM
SQ
9
49
SMV
48
SQV
Q20
AF MUTE
SWITCH
5R
CD1
AF OUT
Q21
AF FILTER
1st IF input
(38.85MHz)
16
15
14
13
12
11
10
9
LPF
RSSI
MIX
Noise
comp
IC3
FM IC
Quadrature
detector
Rectifier
Noise
AMP
Buffer
IF AMP
Local
OSC
1
2
3
4
5
Inverter
AMP
6
7
8
R135
C173
C174
R126
2nd local OSC
(38.4MHz)
CF1
450kHz
R125
5R
Fig. 3 IF, Squelch, Mute and S meter circuit
■ AF Amplifier
The detected audio signal passes through an AF filter (Q21)
and enters an AF mute switch (Q20).
After passing through the AF mute switch (Q20), the signal
passes through an AF volume (VR201) and is amplified to a
specified output level with an AF amplifier (IC6).
The audio signal amplified with the AF amplifier (IC6) is
output through an internal speaker or an external speaker
jack (J4).
The beep tone and the DTMF signal are output from the
DTMF/BEEP terminal (pin 40) of the MPU (IC8), enters the AF
amplifier (IC6) and is output as a monitor tone.
IC3
FM IC
AF OUT
9
VR201
AF VOLUME
Q21
Q20
AF
FILTER
AF MUTE
SWITCH
IC6
AF AMP
SPG
REM/TXD
SPK
AFO
SP
40
DTMF/BEEP
IC8
MPU
REM
J4
SP JACK
46
Fig. 4 AF amplifier
7
TH-K4AT/K4E
CIRCUIT DESCRIPTION
Transmitter System
The transmission/reception switching circuit consists of
D10, D11, L19, D12 and D13. These diodes are turned ON in
transmit mode and OFF in receive mode to switch signals.
■ Microphone Amplifier Circuit
The audio signal from the microphone passes through a
high-pass filter (IC5) and enters a microphone amplifier (IC16).
The signal passes through a pre-emphasis circuit, limiter
amplifier and splatter filter inside the microphone amplifier.
The splatter filter will remove distortion outside the audio band.
MIC
IC5
IC16
Q1
HPF
MIC
AMP
VCO
Q9
RF AMP
Q2
RF AMP
Q5
RF AMP
VR5
MAX DEV
IC16
MIC AMP
MIC
IC5
HPF
ANT
Limiter
6
1
Preemphasis
Q11
DRIVE AMP
VCO
D10,D11,L19
D12,D13 LPF
ANT
SW
Splatter
filter
Q10
DRIVE AMP
Fig. 5 Microphone amplifier circuit
Q12
POWER AMP
Fig. 6 Modulation, Drive, Final and
Transmission/reception switching circuit
■ Modulation Circuit
The audio signal amplified by the microphone amplifier
(IC16) passes through a semi-fixed volume (VR5) for
modulation adjustment, and goes to the VCO modulation
varicap (D6) for variable reactance phase modulation.
■ APC Circuit
The APC (Automatic Power Control) circuit is used to obtain
a stable transmission power and controls transmission output
by detecting the drain current of Q11 and Q12.
The transmission output can be changed in three levels:
High, Mid, and Low.
The reference voltage is output from the BPF/APC terminal
(pin 6) of the MPU (IC8) and the detection voltage generated by
R70, R71 and R72 are fed to the APC differential amplifier (IC2).
The voltage in proportion to the difference between
reference voltage and detection voltage is output from the
BOUT terminal (pin 7) of IC2 as an APC voltage.
■ Drive and Final Circuit
The output signal from VCO (Q1) passes through an RF
amplifier (Q2, Q5, Q9) and drive amplifier (Q10, Q11), and is
amplified by a power amplifier (Q12).
■ Transmission/Reception Switching Circuit
The signal amplified by the power amplifier (Q12) passes
through a transmission/reception switching circuit and a lowpass filter, and is fed to the antenna.
ANT
D10
LPF
Q11
D11
Q10
D12
VDD
D13
RX
Q58
VGG
L19
Q12
Q15
5T
Q55
IC2
APC AMP
2
V+
BOUT
A+IN
B–IN
GND
B+IN
7
Q14
+
A–IN
8
–t
AOUT
TH1
R72
R71
R70
1
3
B
4
6
5
51
THERM
7
6
Q13
B
8
Fig. 7 APC and Temperature protection circuit
KAPC
BPF/APC
16
FINAL
IC8
MPU
TH-K4AT/K4E
CIRCUIT DESCRIPTION
The APC voltage controls the gate voltage of Q11 and Q12,
and keeps transmission output stable.
The MPU detects power supply voltage and controls Q58
by transmission power supply voltage and transmission power.
For example, if the power supply voltage during transmission,
is equal to or higher than approx. 10.5 V and if power is at Mid
or Low level, the APC voltage level applied to Q12 is reduced
by Q58.
■ Temperature Protection Circuit
To prevent thermal destruction of the power amplifier (Q12),
this circuit reduces APC voltage when Q12 temperature rises.
The MPU (IC8) detects temperature with a thermistor (TH1)
and controls reference voltage to the APC circuit.
PLL System
■ PLL Circuit
A reference frequency of 5 kHz or 6.25 kHz is produced by
dividing the 12.8 MHz reference frequency of the TCXO (X1)
with PLL IC (IC1). Comparison frequency is produced by
amplifying VCO output with an RF amplifier (Q6) and dividing
it with the PLL IC.
The PLL synthesizer with 5 kHz and 6.25 kHz step is
configured by comparing phases of the reference frequency
and comparison frequency.
The phase difference between reference frequency and
comparison frequency passes through a charge pump in the
PLL IC, then ripples are removed with a loop filter with lowrange passing characteristics to produce VCO control voltage
(lock voltage).
■ VCO Circuit
The VCO produces a desired frequency directly with a
Colpits oscillation circuit containing an oscillation transistor (Q1)
used for both transmission and reception.
The VCO control voltage is applied to varicap (D1, D2, D3,
D4) to produce a desired frequency.
The SHIFT terminal (pin 113) of the MPU (IC8) goes "H"
during transmission, and the shift control switch (Q3) is turned
ON to change oscillation frequency.
VCO
Q4
TCXO
5C
5/0V
TO
5C
5/0V
X1
VR1
5MS
5/0V
5C
5/0V
PLL
VC
12.8MHz
TCXO
12.8MHz
IC1
PLL IC
CLOCK
DATA
LE
IF
Fo/LD
LPF
Rectifier
D1-D4
LV
1~5V
LOOP
FILTER
Q6
Ripple
Filter
SHIFT
H/L
Q3
SHIFT
SW
Q1
OSC
Q2
Buff
Amp
Q5
RF
Amp
D8,D9
TX
RX
SW
5T 5/0V
5R 5/0V
MOD
RF
Amp
MOD
Fig. 8 PLL and VCO circuit
■ Unlock Detection Circuit
When the PLL is unlocked, the waveform of the pulse
output from the Fo/LD terminal (pin 14) of the PLL IC (IC1) is
rectified with R32, D16, R35 and C40, and the Fo/LD terminal
is made "L" level. The voltage at the Fo/LD terminal is detected
by the MPU to control transmission/reception switching timing.
5C
IC1
PLL IC
Fo/LD
R35
D16
14
102
R32
C40
PLL LD
IC8
MPU
Fig. 9 Unlock detection circuit
9
TH-K4AT/K4E
CIRCUIT DESCRIPTION
Power Supply Circuit
■ Power Supply Switching Circuit
■ Charging Circuit
The voltage supplied through the battery terminal or DC IN
terminal is branched in the power supply switching circuit as
shown in Fig.10 and then supplied to the required components.
When an external power supply is connected to the DC IN
terminal, the constant-current circuit consisting of Q33 and
D31 provides a constant current of approx. 110 mA to the NiMH battery.
If no external power supply is connected to the DC IN
terminal, the constant-current circuit does not function.
IC8
MPU
BTEMP
■ Battery Type Recognition Circuit
When the battery pack is attached to the transceiver, the
battery type is recognized with the T terminal on the
transceiver. This battery type recognition activates charging
for the Ni-MH battery pack and displaying the battery meter.
Q36
2SJ347
-
THERM
DET
DCDET
T
Q41
RN2105
VR1
ENC
5MS
BTDET
5MS SW
+
D35
RB521S-30
BATT TERMINAL
7.5V Norminal
(6.0 - 9.0V)
PROTECT
Q57
RN2105
IC1
TCXO
Q4,5,6
D40,41
5M
5C
5C SW
IC9
TK11250
CM
AVR
5.0V
Q35
2SK1830
DC-IN
DET
Q33
2SB1184
(Q,R)
BATT
CHARGE
D30
RB521S-30
D33
RB051L-40
PROTECT
PROTECT
D31
DA221
IC5
Q30
Q53
5MV RN2701
IC3,17
D9,14
5R
Q16,17
Q22,23,24
Q9,10,13
D8,10
TH1
IC16
Q47
IC12
TK11250
CUCB
5R SW
5MV SW
D36
RB521S-30
B
CONSTANT
CURRENT
D32
RB051L-40
Q34
2SK1830
B
CHARGE
SW
CHARGE
PROTECT
AF AMP
DC IN
13.8V Norminal
(12.0 - 16.0V)
PROTECT
Q55
CPH3317
5T
IC6
D48,49
D42,43,46
D47,44
AVR
5.0V
Q37, Q38
2SB1184
(Q,R)
2SC4617(R)
AF/LAMP
AVR
IC4
XC6202PB
52FR
AVR
11.5V
5T SW
J2
D81
RB521S-30
PROTECT
B
Fig. 10 Charging and Power supply switching circuit
Control System
■ Reset and Backup Circuit
When power is supplied to the transceiver, the 5M voltage
goes "H" as C303 is charged.
A rising edge of the 5M voltage is detected by the voltage
detection IC (IC11) and when its output (RESET) goes "H", the
reset status of the MPU is released.
If the supplied voltage to the transceiver is reduced and
the 5M voltage falls below the detection voltage of the voltage
detection IC (IC10), the MPU detects it by an interrupt
processing, backs up data in EEPROM (IC15) and turns the
power off.
Timing chart
IC15
EEPROM
D35
BATT
IC9
IN
Power
ON
5C
L63
5M
IC11
C303
IC8
MPU
+
R244
5V OUT
AVR
IN
5M
R243
0
OUT
RESET
C307
RESET
IC10
IN
5V
5V
0
OUT
INT
INT
5V
0
10
Fig. 11 Reset and Backup circuit
Power
OFF
TH-K4AT/K4E
CIRCUIT DESCRIPTION
■ Voltage Detection Circuit
■ LED Drive Circuit
Various voltages are input to the A/D port of the MPU (IC8)
for processing.
Battery voltage is divided with resistors (R240, R241) and
enters the BATT terminal (pin 52) of the MPU.
Battery voltage is used for battery meter indication during
transmission or for alert tone processing when an abnormal
power supply voltage (approx. 16.5 V or higher) is applied.
Squelch voltage becomes DC voltage by detecting changes
in noise voltage in the FM IC (IC3), and the signal is used for
squelch control.
The S meter voltage is output from the RSSI pin of the FM
IC to control S meter display.
Detection of thermistor voltage (temperature) in the Ni-MH
battery during charging, detection of remote microphone key
pressing and VOX voltage monitoring are performed through
each A/D port of the MPU.
The LCD and key illumination LEDs are lighted by controlling
Q51 for the LCD and Q50 for keys according to the output
voltage from the AF/LAMP AVR (Q37).
The BUSY and TX illumination LEDs are lighted by controlling
Q47.
Q51
D33
Q37
B
Q38
D48
D42
D44
D49
D43
D47
D46
AF AMP
■ Battery Save Circuit
Q50
56
If there is no signal (squelch off, scan off or no key operation)
for longer than 10 seconds, the transceiver will enter the
battery save mode.
Battery save operation is performed by controlling Q57 with
an output signal from the 5C (SAVE) terminal (pin 15) of the
MPU.
The 5C ON/OFF cycle ratio during battery saving can be set
from a transceiver menu.
D41
BUSY LED
Q47
99
LAMP
IC8
MPU
RX LED
R227
5C
D40
R226
5T
TX LED
Fig. 13 LED drive circuit
5C
5MS
5M
Q41
Q57
37
5MS
5C (SAVE)
IC8
MPU
15
Fig. 12 Battery save circuit
11
TH-K4AT/K4E
CIRCUIT DESCRIPTION
■ Key and Encoder Input Circuit
The POWER key is assigned to the interrupt port (pin 95) of
the MPU.
The PTT key is assigned to the dedicated port (pins 13, 14)
of the MPU.
Other keys composes a matrix and key presses are detected
by scanning them by software.
The encoder reads data using the interrupt port (pins 35
and 36) of the MPU.
16 key (M2 type)
KIN0
KIN1
KIN2
KIN3
KIN4
IC8
MPU
KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI
95
1
2
3
F
MENU
4
5
6
VFO
LAMP
7
8
9
MR
MONI
∗
0
#
CALL
SET
POWER
SW
14
PTTE
13
ENCB ENCA
36
35
S7
ROTARY
ENCODER
J3
4 key (E type)
KIN0
KIN1
KIN2
KIN3
KIN4
IC8
MPU
KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI
95
F
VFO
MR
CALL
14
PTTE
13
ENCB ENCA
36
35
MENU
LAMP
MONI
SET
POWER
SW
S7
ROTARY
ENCODER
J3
Fig. 14 Key and Encoder input circuit
12
TH-K4AT/K4E
CIRCUIT DESCRIPTION
■ CTCSS/DCS
■ DTMF
The encode signal is generated by the MPU (IC8) and output
from the TONE terminal (pin 41) of the MPU.
The unwanted high-frequency components of the encode
signal output from the MPU are removed with a low-pass filter,
and applied to VCO modulation input (MOD) and TCXO VC
terminal for modulation.
The VCO and TCXO modulation levels are adjusted by VR6
to produce flat modulation characteristics in low and high
ranges.
The decode signal is input to the SIGIN pin (pin 47) of the
MPU after the waveform of the audio signal from the FM IC is
rectified with a CTCSS/DCS filter (IC17). Then the set CTCSS
tone frequency and DCS code are detected by digital signal
processing in the MPU to control muting.
The DTMF signal is generated by the MPU (IC8) and is
output from the DTMF/BEEP terminal (pin 40) of the MPU.
The DTMF signal is mixed with an audio signal at the input
side of the AF amplifier (IC6), and is output as a monitor tone.
The DTMF signal is mixed with a modulation signal at the
input side of pre-emphasis in the microphone amplifier (IC16)
and used as a transmit signal.
■ VOX
The IC5 and Q30 amplify the audio signal captured in the
microphone, and then the signal is converted into the DC
Voltage D24 rectifies.
The DC voltage activates the MPU (IC8), and the VOX starts.
X1
TCXO
VC
LPF
VR6
Q30
AMP
MOD
VR5
VCO
41
TONE
D24
50
VOX IN
MIC
IC16
AMP
IC3
9 FM
IC
DTMF/BEEP
40
6
IC6
AF AMP
SIG IN
CTCSS/DCS
FILTER
IC8
MPU
1
VOL OUT
IC17
47
IC5
MIC
HPF
Vin
Fig. 15 CTCSS/DCS and DTMF, VOX
■ Serial Control
5MC
Serial control must be enabled from a transceiver menu so
that the REM/TXD pin of the speaker jack (J4) and the PTT
(RXD) pin of the microphone jack (J3) function as TXD and
RXD, respectively, when communicating with a personal
computer.
IC5
HPF
PTT
MIC
IM
J3
MIC JACK
+
–
MIC
5MS
J4
SP JACK
SPG
REM/TXD
SPK
AFO
13
PTTE
46
REM
10
TXD
POUT
IC8
MPU
RXD
12
11
IC6
AF AMP
SP
Fig. 16 Serial control
13
TH-K4AT/K4E
SEMICONDUCTOR DATA
MPU : 90522BPFFG139 (IC8)
■ Pin function
Pin
No.
1
2
3
4
5
I/O
Function
O
O
I
O
O
Common serial clock output
Common serial data output
Data input from EEPROM
Chip select output to EEPROM
VOX power supply switch
L:ON
BPF tuning voltage output, APC voltage
output (PWM)
APC ON/OFF switch
L:APC ON
Positive power supply
AF mute switch
L:Mute
Speaker mute switch
H:Mute
UART data input line from PC (9600bps)
UART data output line to PC (9600bps)
External [PTT] key input
L:ON
[PTT] key input
L:ON
Save power supply switch
L:ON
Gate bias control of TX final amplifier
L:Bias ON
LCD segment output 0
LCD segment output 1
LCD segment output 2
LCD segment output 3
LCD segment output 4
LCD segment output 5
LCD segment output 6
LCD segment output 7
LCD segment output 8
LCD segment output 9
LCD segment output 10
LCD segment output 11
LCD segment output 12
LCD segment output 13
LCD segment output 14
LCD segment output 15
GND
Power supply stabilization (Connected to
VSS through 0.1uF)
Encoder A side input
Encoder B side input
5MS main power supply switch L:ON
Reference voltage input for DAC
Ground for DAC
Encode waveform output of DTMF/BEEP/
1750Hz (D/A)
Encode waveform output of CTCSS/DCS
(D/A)
Positive power supply for ADC
Reference voltage input for ADC
Ground reference voltage input for ADC
Ground for ADC
Remote control microphone key voltage
input (A/D)
Decode waveform input of CTCSS/DCS
(A/D)
6
BPF/APC
O
7
8
9
10
11
12
13
14
15
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
O
O
O
I
O
I
I
O
16
FINAL
O
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
VSS
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
-
34
COR1
-
35
36
37
38
39
ENCA
ENCB
5MS
DVCC
DVSS
DTMF/
BEEP
I
I
O
-
41
TONE
O
42
43
44
45
AVCC
AVRH
AVRL
AVSS
-
46
REM
I
47
SIGIN
I
40
14
Pin
Name
CLOCK
DATA
EEPDI
EEPCS
VOX
O
Pin
No.
48
49
50
51
52
Pin
Name
SQ
SM
VOXIN
THERM
BATT
53
BTEMP
I
54
VCC
-
55
CHARGE
O
56
LAMP
O
57
AFAMP
O
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
NAR
COM0
COM1
COM2
COM3
VSS
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
NC
NC
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
V0
V1
V2
V3
HST(VCC)
MD2
MD1
MD0
RESET
VSS
X0
X1
VCC
PWRSW
INTUP
INTDW
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
O
I
I
I
I/O
Function
I
I
I
I
I
Noise voltage input for squelch (A/D)
RSSI voltage input for S-meter (A/D)
Microphone voltage input for VOX (A/D)
TX temperature compensation input(A/D)
Battery voltage input (A/D)
Detection of thermistor voltage (temperature)
in the Ni-MH battety (A/D)
Positive power supply
Battery charge circuit power supply switch
H:ON
Lamp power supply switch
H:ON
AF amplifier/Lamp AVR power supply
switch
H:ON
Wide/Narrow switching
H:Narrow
LCD common output 0
LCD common output 1
LCD common output 2
LCD common output 3
GND
LCD segment output 16
LCD segment output 17
LCD segment output 18
LCD segment output 19
LCD segment output 20
LCD segment output 21
LCD segment output 22
LCD segment output 23
LCD segment output 24
Not used
Not used
LCD segment output 25
LCD segment output 26
LCD segment output 27
LCD segment output 28
LCD segment output 29
LCD segment output 30
LCD segment output 31
Not used
Not used
Not used
LCD drive power supply 3
Not used (VCC)
“L” fixed
“H” fixed
“H” fixed
Reset input
L:Reset
GND
System clock (7.9872MHz)
System clock (7.9872MHz)
Positive power supply
Power switch interrupt input (↓)
Power supply voltage interrupt input (↑)
Power supply voltage interrupt input (↓)
TH-K4AT/K4E
SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION
Pin
No.
Pin
Name
98
DCDET
I
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
RXLED
BSFT
PLLEN
PLLLD
KIN0
KIN1
KIN2
KIN3
KIN4
TYPE
VUKEY
MICM
NOAA
5R
SHIFT
5T
KOUT0
KOUT1
KOUT2
KOUT3
VSS
BTDET
O
O
O
I
I
I
I
I
I
I
I
O
I
O
O
O
O
O
O
O
O
I/O
Function
DC IN detection interrupt input (↓)
L:DC IN connected
Busy LED output
H:ON
Beat shift swiching output
H:ON
Serial enable output to PLL IC
Lock detection input from PLL IC H: Lock
Key matrix input 0
Key matrix input 1
Key matrix input 2
Key matrix input 3
Key matrix input 4
Market code bit input
Detection of VHF or UHF, 4 key or 16 key
Microphone mute switch
H:Mute
Not used
RX power supply switch
L:ON
VCO shift switch
L:RX, H:TX
TX power supply switch
L:ON
Key matrix output 0
Key matrix output 1
Key matrix output 2
Key matrix output 3
GND
Battery detection switch
L:ON
COMPONENTS DESCRIPTION
TX-RX UNIT (X57-675X-XX)
Ref. No. Use/Function
IC1
PLL IC
APC differential
IC2
amplifier
IC3
FM IC
IC4
11.5V AVR
IC5
HPF
IC6
AF amplifier
IC8
MPU
IC9
5.0V AVR
4.4V voltage
IC10
detection
3.3V voltage
IC11
detection
IC12
5.0V AVR
IC15
EE PROM
IC16
MIC amplifier
CTCSS/DCS
IC17
filter
Q1
VCO
Q2
RF amplifier
VCO shift
Q3
control switch
Q4
Ripple filter
Q5,6,9 RF amplifier
Q10,11 Drive amplifier
Q12
Power amplifier
APC circuit
Q13
operation switch
Q14
Q15
Q16
Q17
Q20
Q21
Q22
Q23
Q24
Q27
Q29
Q30
Q31
Q33
Operation/Condition/Compatibility
Active filter
MPU INT voltage detection
MPU Reset voltage detection
Limiter, splatter filter
Active filter
On TX
On TX
APC output
On TX
switch
Q10 operation
On TX
switch
1st mixer
RX 1st amplifier
Audio mute
Audio mute when off
switch
Audio filter
Active filter
Wide/narrow
On when wide is selected
switching
Tripler
2nd local
IF amplifier 1st IF 38.85MHz
Wide/narrow
On when wide is selected
switching
MIC mute
Mutes when ON
switch
VOX detection
amplifier
Q56 operation
Off when the speaker outputs audio
switch
Charge switch
15
TH-K4AT/K4E
COMPONENTS DESCRIPTION
Ref. No. Use/Function
Operation/Condition/Compatibility
Q33 operation
Q34
On when charging
switch
Q35
DC IN detection H: DC IN detection
Ni-MH temperature
Q36
On when temperature detection is activated
detection
Q37
Q38
Q41
Q47
Q50
Q51
Q52
Q53
Q55
Q56
Q57
Q58
D1-4
D5
D6
D7
D8
D9
D10-13
D14
D15
D16
D18-21
D22
D24
D25
D26
D27
D30
D31
D32
D33
16
AF amplifier/
Lamp AVR
Q37 operation
switch
5MS switch
TX/BUSY LED
switch
Key LED switch
LCD LED
switch
Beat shift
switch
5R/5MV switch
5T switch
Speaker mute
switch
5C switch
Q12 gate
voltage switch
VCO frequency
control
Frequency shift
VCO modulation
Speed up
RF switch
RF switch
Antenna switch
Reverse current
prevention
APC output
voltage limiter
PLL lock detection
RX BPF tuning
MIC mute
control
VOX detection
rectification
Speaker mute
speed up
C246 discharge
MIC ALC
rectification
Reverse current
prevention
Constant-current
circuit
Reverse current
prevention
Reverse current
prevention
On when the speaker outputs the audio
or lamp lights
On when 5MS is applied
On when the key LED lights
Ref. No. Use/Function
AVR
D34
constant-voltage
Reverse current
D35
prevention
Reverse current
D36
prevention
D40
TX LED
D41
BUSY LED
D42-44 Key illumination
D46,47 LED
LCD illumination
D48,49
LED
D60
On when the LCD LED lights
D61
On when 5R or 5MV is applied
On when 5T is applied
D62-65
D69-72
D73
On when 5C is applied
Off when High power is selected
D74
D79,80
D81
Ripple filter
On TX
On RX
On TX
APC reference voltage
Charge current
Constant-current charge
DC IN
Battery
Operation/Condition/Compatibility
Battery
DC IN
Lights on TX
Lights on RX
Key backlight illumination
LCD backlight illumination
Key type
detection
UHF type
detection
market code
detection
Reverse current
Key matrix
prevention
Voltage drop
Over input
protection
Limiter
Reverse current
prevention
TH-K4AT/K4E
PARTS LIST
indicates safety critical components.
∗ New Parts.
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia
Y: PX (Far East, Hawaii)
Y: AAFES (Europe)
K: USA
T: England
X: Australia
P: Canada
E: Europe
M: Other Areas
TH-K4AT/K4E (Y50-581X-XX)
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
Parts No.
Description
Destination
TH-K4AT/K4E
1
2
3
4
5
3A,2G
1A
1C
3A,3C
3B,3D
∗
∗
∗
∗
∗
A02-3817-02
A02-3822-23
A02-3823-23
A10-4066-11
A82-0053-02
CABINET ASSY(BATTERY CASE)
CABINET ASSY(16KEY)
CABINET ASSY(4KEY)
CHASSIS
REAR PANEL
6
7
8
9
10
1B,1D
1A,1C
1B,1D
2B,2D
1B,1D
∗
∗
∗
∗
∗
B09-0675-03
B10-2746-03
B11-1805-03
B11-1806-04
B38-0881-05
CAP(SP/MIC/DC IN)
FRONT GLASS
ILLUMINATION GUIDE(LCD)
FILTER(LCD)
LCD
11
11
11
11
11
1G
1E,1G
1E
1E
1E
∗
∗
∗
∗
∗
B62-1695-00
B62-1696-00
B62-1697-00
B62-1699-00
B62-1702-00
INSTRUCTION MANUAL(CHINESE)
INSTRUCTION MANUAL(ENGLISH)
INSTRUCTION MANUAL(SPANISH)
INSTRUCTION MANUAL(GERMAN)
INSTRUCTION MANUAL(ITALIAN)
M2
11
11
12
12
1E
1E
3A
3C
∗
∗
∗
∗
B62-1757-00
B62-1758-00
B72-2131-04
B72-2132-04
INSTRUCTION MANUAL(FRENCH)
INSTRUCTION MANUAL(DUTCH)
MODEL NAME PLATE(TH-K4AT)
MODEL NAME PLATE(TH-K4E)
E
E
M2
E
13
14
15
16
2B,2D
2A,2C
2B,2D
1A,1C
∗
∗
∗
∗
E04-0443-05
E23-1234-04
E29-1199-04
E37-1106-05
RF COAXIAL RECEPTACLE(SMA)
TERMINAL(BATTERY)
INTER CONNECTOR(LCD)
LEAD WIRE WITH CONNECTOR(SP)
17
18
19
20
21
22
23
2A
2A,2C
2C
2B,2D
∗
∗
∗
∗
∗
∗
∗
SHIELDING COVER(FINAL FET)
SHIELDING COVER(ANT TERMINAL)
SHIELDING COVER(FINAL FET)
SHADOW PLATE(LCD)
FIBROUS SHEET(SP NET)
SHEET
PACKING(VOL/ENC)
PACKING(CASE)
PACKING(SP/MIC)
M2
3B,3D
2A,2C
2B,2D
F10-2464-04
F10-2465-04
F10-2494-04
F15-1008-04
G10-1317-04
G11-4296-04
G53-1529-04
G53-1572-12
G53-1589-03
24
25
26
27
3E
2H
2F
3G
∗
∗
∗
∗
H52-1964-02
H52-1965-12
H12-3146-01
H12-3147-03
ITEM CARTON CASE(TH-K4E)
ITEM CARTON CASE(TH-K4AT)
PACKING FIXTURE
PACKING FIXTURE
E
M2
E
M2
28
29
30
31
32
2A,2C
1B,1D
2E,3G
2A,2C
3E,2G
∗
J19-5451-03
J21-8456-03
J29-0709-04
J30-1284-04
J69-0342-05
33
44
2B,2D
3A,3C
34
35
36
37
38
1B,1D
1B,1D
1A
1A,1C
1C
A
B
C
D
E
2B,2D
1B,1D
1B,1D
1A,1C
2A,2C
E : TH-K4E
∗
∗
∗
∗
∗
M2
M2
E
New
Ref. No. Address parts
Parts No.
Description
F
G
3A,3C
2A,2C
N82-2007-46
N09-2433-05
PAN HEAD TAPTITE SCREW(CASE)
PAN HEAD TAPTITE SCREW(FINAL FET)
39
2B,2D
R39-0602-05
VARIABLE RESISTOR
40
41
1A,1C
2F,3G
∗
T07-0341-15
T90-1019-25
SPEAKER
HELICAL ANTENNA
42
43
2F
2E
∗
∗
W08-0959-05
W09-0991-05
CHARGER(230V/13.8V) ACCESSORY
BATTERY ASSY(7.2V/1100MAH) ACCESSORY
ACCESSORY
E
E
TX-RX UNIT (X54-675X-XX) 0-21 : M2 2-71 : E
D40
D41
D42-44
D42,43
D46
B30-2156-05
B30-2157-05
B30-2205-05
B30-2205-05
B30-2205-05
LED(RED)
LED(YELLOW)
LED(YG)
LED(YG)
LED(YG)
D46,47
D48,49
B30-2205-05
B30-2237-05
LED(YG)
LED(YG)
CK73HB1C103K
CC73HCH1H390G
CC73HCH1H020B
CK73HB1H471K
CK73HB1A104K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.010UF
39PF
2.0PF
470PF
0.10UF
K
G
B
K
K
C6
C7
C8,9
C10
C11
CK73HB1H471K
CC73HCH1H0R5B
CC73HCH1H050B
CK73HB1C103K
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
0.5PF
5.0PF
0.010UF
470PF
K
B
B
K
K
C13
C14
C15
C17,18
C19
CC73HCH1H0R5B
CK73HB1H471K
CC73HCH1H120J
CK73HB1H471K
CC73HCH1H080D
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.5PF
470PF
12PF
470PF
8.0PF
B
K
J
K
D
C20
C21
C22
C24-26
C27
CC73HCH1H050C
CK73HB1H471K
CC73HCH1H040C
CK73HB1H471K
C92-0628-05
CHIP C
CHIP C
CHIP C
CHIP C
CHIP-TAN
5.0PF
470PF
4.0PF
470PF
10UF
C
K
C
K
10WV
HOLDER(TERMINAL)
HARDWARE FIXTURE(LCD)
BELTHOOK ASSY
ACCESSORY
SPACER(PTT KNOB)
HANDSTRAP
ACCESSORY
C29
C30
C33
C34
C35
C92-0712-05
CK73HB1H471K
C92-0002-05
C92-0656-05
C92-0001-05
CHIP-TAN
22UF
CHIP C
470PF
CHIP-TAN
0.22UF
TANTALUM C 2.2UF
CHIP-C
0.1UF
6.3WV
K
35WV
6.3WV
35WV
J82-0076-05
J99-0376-04
FPC(VOL/ENC)
ADHESIVE TAPE
K29-5150-03
K29-5159-03
K29-9272-02
K29-9274-03
K29-9276-02
KNOB(VOL)
KNOB(ENC)
KEY TOP(16KEY)
KNOB(PTT/LAMP/MONI)
KEY TOP(4KEY)
C37
C38
C40
C41
C42
CK73HB1H471K
CK73HB1C103K
CK73HB1A104K
C92-0507-05
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP-TAN
CHIP C
470PF
0.010UF
0.10UF
4.7UF
470PF
K
K
K
6.3WV
K
N09-1492-05
N14-0569-04
N14-0573-04
N79-2035-46
N79-2040-45
PAN HEAD SCREW(SMA)
CIRCULAR NUT(VOL/ENC)
CIRCULAR NUT(SMA)
PAN HEAD TAPTITE SCREW(PCB)
PAN HEAD TAPTITE SCREW(HOLDER,R PANEL)
C43
C44-46
C50
C51
C52
CK73HB1C103K
CC73HCH1H101J
CC73HCH1H220J
CC73GCH1H220J
CC73HCH1H100D
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.010UF
100PF
22PF
22PF
10PF
K
J
J
J
D
C54
C55
CK73HB1H471K
CK73HB1C103K
CHIP C
CHIP C
470PF K
0.010UF K
M2 : TH-K4AT
Destination
E
E
E
E
M2
E
C1
C2
C3
C4
C5
∗
M2
E
E
M2
17
TH-K4AT/K4E
PARTS LIST
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
Parts No.
Description
Destination
New
Ref. No. Address parts
Parts No.
Description
C56
C57
C61
C64
C65
CK73HB1H471K
CC73HCH1H100D
CK73HB1H471K
CK73HB1H471K
CC73HCH1H100D
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
10PF
470PF
470PF
10PF
K
D
K
K
D
C158
C159
C160
C161
C162-164
CC73HCH1H130G
CC73HCH1H030B
CC73HCH1H130G
CC73HCH1H030B
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
13PF
3.0PF
13PF
3.0PF
470PF
G
B
G
B
K
C66
C67
C68
C70
C71
CK73GB1C104K
CK73HB1H471K
CC73HCH1H100D
CK73GB0J105K
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.10UF
470PF
10PF
1.0UF
470PF
K
K
D
K
K
C165
C166
C167,168
C169,170
C171
CC73HCH1H030B
CK73HB1C103K
CK73HB1A104K
CK73HB1A683K
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
3.0PF
0.010UF
0.10UF
0.068UF
470PF
B
K
K
K
K
C72
C73
C75
C76
C77
CK73GB1C104K
CK73HB1H471K
CK73HB1H471K
CC73GCH1H080D
CC73GCH1H470J
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.10UF
470PF
470PF
8.0PF
47PF
K
K
K
D
J
C172
C173,174
C175
C176
C177
CK73HB1H182K
CC73HCH1H181J
CC73HCH1H220J
CK73HB1A104K
C92-0628-05
CHIP C
CHIP C
CHIP C
CHIP C
CHIP-TAN
1800PF
180PF
22PF
0.10UF
10UF
K
J
J
K
10WV
C78
C82
C83
C84
C86
CK73HB1H471K
CK73HB1H471K
CK73HB1C103K
CK73HB1A104K
C93-0766-05
CHIP C
CHIP C
CHIP C
CHIP C
CERAMIC C
470PF
470PF
0.010UF
0.10UF
56PF
K
K
K
K
J
C178
C179
C180
C182,183
C186
CK73HB1C103K
CK73HB1A104K
CC73HCH1H121J
CK73HB1A104K
CC73HCH1H240J
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.010UF
0.10UF
120PF
0.10UF
24PF
K
K
J
K
J
C93-0754-05
CC73GCH1H200G
CC73GCH1H330J
CK73HB1H471K
CC73GCH1H030B
CERAMIC C
CHIP C
CHIP C
CHIP C
CHIP C
18PF
20PF
33PF
470PF
3.0PF
J
G
J
K
B
C187
C188
C189
C190-192
C193
CC73HCH1H020C
CC73HCH1H240J
CK73HB1H471K
CK73HB1C103K
C92-0507-05
CHIP C
CHIP C
CHIP C
CHIP C
CHIP-TAN
2.0PF
24PF
470PF
0.010UF
4.7UF
C
J
K
K
6.3WV
C94
C95
C96
C97
C98
CK73GB1H471K
CC73GCH1H020B
CC73GCH1H010B
CC73GCH1H040B
CC73GCH1H020B
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
2.0PF
1.0PF
4.0PF
2.0PF
K
B
B
B
B
C194
C195
C196,197
C198
C200
CK73HB1A104K
C92-0628-05
CK73GB1C273K
CK73EF1C105Z
CK73HB1C103K
CHIP C
CHIP-TAN
CHIP C
CHIP C
CHIP C
0.10UF
10UF
0.027UF
1.0UF
0.010UF
K
10WV
K
Z
K
C99
C100
C101
C102
C105-107
CC73GCH1H050B
CC73GCH1H020B
CC73GCH1H040B
CC73GCH1H030B
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
5.0PF
2.0PF
4.0PF
3.0PF
470PF
B
B
B
B
K
C201
C202
C203
C204
C205
CK73HB1H122K
CK73HB1H271K
CC73HCH1H121J
CK73HB1A333K
CK73HB1A473K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1200PF
270PF
120PF
0.033UF
0.047UF
K
K
J
K
K
C108
C109-115
C116
C117,118
C124
CC73HCH1H101J
CK73HB1H471K
C92-0544-05
CK73HB1H471K
CK73HF1C104Z
CHIP C
CHIP C
CHIP-TAN
CHIP C
CERAMIC C
100PF
470PF
10UF
470PF
0.1UF
J
K
4WV
K
Z
C206
C207
C208
C209
C210
CK73HB1C183K
CK73HB1C223K
CC73HCH1H820J
CK73HB1H471K
CK73HB1C103K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.018UF
0.022UF
82PF
470PF
0.010UF
K
K
J
K
K
C125
C126
C128
C129
C130
CC73HCH1H1R5C
CC73HCH1H100D
CK73HB1C103K
CC73HCH1H110J
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1.5PF
10PF
0.010UF
11PF
470PF
C
D
K
J
K
C211
C212
C213
C219
C220
CK73HB1H222K
CK73HB1C123K
C92-0714-05
CK73HB1A473K
CK73HB1E472K
CHIP C
2200PF
CHIP C
0.012UF
TANTALUM C 4.7UF
CHIP C
0.047UF
CHIP C
4700PF
K
K
6.3WV
K
K
C131-133
C134
C135,136
C137
C139
CK73HB1C103K
CK73HB1H471K
CC73HCH1H050C
CC73HCH1H070D
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.010UF
470PF
5.0PF
7.0PF
470PF
K
K
C
D
K
C221,222
C223
C224
C225
C226
CK73HB1C103K
CK73HB1H471K
CK73HB1A104K
CK73GB0J105K
CK73HB1A104K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.010UF
470PF
0.10UF
1.0UF
0.10UF
K
K
K
K
K
C140
C141,142
C144
C145
C146
CC73HCH1H040B
CK73HB1H471K
CC73HCH1H180G
CC73HCH1H080B
CC73HCH1H040B
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
4.0PF
470PF
18PF
8.0PF
4.0PF
B
K
G
B
B
C227
C228,229
C230
C231
C235,236
C92-0587-05
CK73HB1A104K
CK73FB1C105K
CK73HB1H471K
CK73HB1C103K
CHIP-TAN
CHIP C
CHIP C
CHIP C
CHIP C
2.2UF
0.10UF
1.0UF
470PF
0.010UF
4WV
K
K
K
K
CK73HB1H471K
CC73HCH1H060B
CK73HB1H471K
CK73HB1H471K
CC73HCH1H180G
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
6.0PF
470PF
470PF
18PF
K
B
K
K
G
C237
C238-241
C242
C243
C246
C92-0628-05
CK73HB1H471K
CK73HB1C103K
CK73HB1H471K
C92-1327-05
CHIP-TAN
CHIP C
CHIP C
CHIP C
CHIP-TAN
10UF
470PF
0.010UF
470PF
100UF
10WV
K
K
K
10WV
C87
C88
C89
C90,91
C93
C147
C148
C152,153
C156
C157
18
∗
∗
∗
∗
E : TH-K4E
M2 : TH-K4AT
∗
∗
Destination
TH-K4AT/K4E
PARTS LIST
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
Parts No.
Description
C247,248
C249
C250
C252
C253
CK73HB1A104K
CK73HB1H471K
CK73EF1C105Z
CC73HCH1H101J
C92-0628-05
CHIP C
CHIP C
CHIP C
CHIP C
CHIP-TAN
0.10UF
470PF
1.0UF
100PF
10UF
K
K
Z
J
10WV
C255
C256,257
C258
C270-272
C276
C92-0628-05
CK73HB1H102K
CK73HB1A104K
CK73HB1H471K
CK73HB1H471K
CHIP-TAN
CHIP C
CHIP C
CHIP C
CHIP C
10UF
1000PF
0.10UF
470PF
470PF
10WV
K
K
K
K
C279-285
C286
C290,291
C293
C294,295
CK73HB1H471K
CK73FB1C105K
CK73HB1H471K
CC73HCH1H470J
CC73HCH1H050C
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
1.0UF
470PF
47PF
5.0PF
K
K
K
J
C
C297
C298
C299
C300
C302
CK73HB1A104K
CK73HB1H471K
CK73FB1C105K
CK73HB1H471K
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
0.10UF
470PF
1.0UF
470PF
470PF
K
K
K
K
K
C303
C304-306
C307
C308
C309
C92-0605-05
CK73HB1H471K
CK73HB1A104K
CK73HB1H471K
CK73FB1C105K
TANTALUM C 150UF
CHIP C
470PF
CHIP C
0.10UF
CHIP C
470PF
CHIP C
1.0UF
6.3WV
K
K
K
K
C310
C311
C312,313
C314
C316
CK73EF1C105Z
CK73GB1C104K
CK73HB1A393K
CK73HB1H471K
CK73GB1C104K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1.0UF
0.10UF
0.039UF
470PF
0.10UF
Z
K
K
K
K
C317,318
C319
C323,324
C326
C327
CK73HB1H471K
C92-0628-05
CK73HB1H471K
CK73HB1H471K
CK73HB1A104K
CHIP C
CHIP-TAN
CHIP C
CHIP C
CHIP C
470PF
10UF
470PF
470PF
0.10UF
K
10WV
K
K
K
C328
C329
C330,331
C332
C335,336
CK73GB0J105K
CC73FCH1H120J
CK73HB1H471K
CK73HB1A104K
CK73HB1A104K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1.0UF
12PF
470PF
0.10UF
0.10UF
K
J
K
K
K
C338
C339
C344-348
C349
C351
CK73FB1C105K
CK73HB1A473K
CK73HB1H471K
CK73HB1A104K
CK73HB1C103K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
1.0UF
0.047UF
470PF
0.10UF
0.010UF
K
K
K
K
K
C352-354
C355,356
C357
C358
C359,360
CK73HB1H471K
CK73HB1C103K
CK73EF1C105Z
CK73HB1A473K
CK73HB1A104K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
0.010UF
1.0UF
0.047UF
0.10UF
K
K
Z
K
K
C361
C363
C364
C365-367
C368
CK73HB1H471K
CC73HCH1H100C
CC73FCH1H180J
CK73HB1H471K
CK73GB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
10PF
18PF
470PF
470PF
K
C
J
K
K
C369-371
C372
C374
C510
C511
CK73HB1H471K
CK73GB1H471K
CC73HCH1H101J
CK73HB1A473K
CK73HB1H471K
CHIP C
CHIP C
CHIP C
CHIP C
CHIP C
470PF
470PF
100PF
0.047UF
470PF
K
K
J
K
K
E : TH-K4E
M2 : TH-K4AT
Destination
New
Ref. No. Address parts
Description
C512
CC73HCH1H101J
CHIP C
CN1
CN2
CN6
CN7
CN8
E40-5915-05
E40-5929-05
E40-6327-05
E40-5630-05
E40-6308-05
FLAT CABLE CONNECTOR
PIN ASSY
PIN ASSY
PIN ASSY SOCKET
PIN ASSY
E40-6309-05
E23-1081-05
E23-1081-05
E03-0190-05
E11-0484-05
PIN ASSY SOCKET
TERMINAL
TERMINAL
DC JACK
3.5D PHONE JACK(3.5D)
J4
E11-0483-05
2.5D PHONE JACK(2.5D)
CN10
F1
F3
F01-1032-05
F53-0286-05
F53-0287-05
RADIATION PLATE
FUSE(2.5A/32V)
FUSE(0.5A/32V)
CD1
CF1
L1,2
L3
L4
L79-1474-05
L72-0968-05
L40-2785-92
L41-2278-14
L41-6868-14
TUNING COIL
CERAMIC FILTER
SMALL FIXED INDUCTOR(270NH)
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
L40-2785-92
L40-1875-71
L40-2275-71
L40-1875-71
L40-1575-71
SMALL FIXED INDUCTOR(270NH)
SMALL FIXED INDUCTOR(18NH)
SMALL FIXED INDUCTOR(22NH)
SMALL FIXED INDUCTOR(18NH)
SMALL FIXED INDUCTOR(15NH)
∗
L92-0149-05
L41-4763-14
L34-4577-05
L34-4602-05
L41-2285-14
FERRITE CHIP
SMALL FIXED INDUCTOR
AIR-CORE COIL
AIR-CORE COIL
SMALL FIXED INDUCTOR
∗
L34-4564-05
L40-1092-81
L40-2775-71
L92-0149-05
L41-4785-14
AIR-CORE COIL
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR(27NH)
FERRITE CHIP
SMALL FIXED INDUCTOR
L41-6885-14
L40-1275-71
L40-1575-71
L34-4564-05
L41-2778-14
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR(12NH)
SMALL FIXED INDUCTOR(15NH)
AIR-CORE COIL
SMALL FIXED INDUCTOR
L41-2778-14
L41-1585-14
L41-5678-14
L41-1278-14
L41-4763-14
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
L41-6868-14
L41-5685-14
L92-0131-05
L92-0137-05
L40-1275-71
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
FERRITE CHIP
FERRITE CHIP
SMALL FIXED INDUCTOR(12NH)
L40-4768-71
L41-6868-14
L41-8285-14
L92-0140-05
L40-4795-85
SMALL FIXED INDUCTOR(4.7NH)
SMALL FIXED INDUCTOR
SMALL FIXED INDUCTOR
FERRITE CHIP
SMALL FIXED INDUCTOR(4.7UH)
L40-2775-71
L92-0161-05
L92-0163-05
SMALL FIXED INDUCTOR(27NH)
BEADS CORE
BEADS CORE
CN9
CN15
CN17
J2
J3
∗
∗
∗
∗
L5,6
L8
L9
L10
L11
L13
L14,15
L16
L17
L18
L19-22
L23
L24
L25
L26
L27
L28
L29
L30
L32
L34
L35
L36
L38
L40
L41
L45,46
L49
L50
L53
L54
L56
L58
L63
L64
E
Parts No.
L65
L67
L68
∗
∗
∗
∗
∗
∗
100PF
J
Destination
E
19
TH-K4AT/K4E
PARTS LIST
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
Parts No.
Description
Destination
X1
X3
XF1
∗
∗
∗
L77-1931-05
L77-1940-05
L71-0619-05
TCXO(12.8MHZ)
CRYSTAL RESONATOR(7.982MHZ)
MCF(38.85MHZ)
CP1
CP2
CP31
CP32-35
R4
∗
RK75HA1J272J
RK75GB1J392J
RK75GB1J392J
RK75HA1J102J
RK73HB1J102J
CHIP-COM
CHIP-COM
CHIP-COM
CHIP-COM
CHIP R
2.7K
3.9K
3.9K
1.0K
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R5
R6
R7
R8
R9
RK73HB1J104J
RK73HB1J102J
RK73HB1J473J
RK73HB1J104J
RK73HB1J151J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
100K
1.0K
47K
100K
150
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R10
R11
R12
R14
R15
RK73HB1J470J
RK73HB1J154J
RK73HB1J470J
RK73HB1J332J
RK73HB1J562J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
47
150K
47
3.3K
5.6K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R16
R17
R18
R19
R20
RK73HB1J271J
RK73HB1J332J
RK73HB1J330J
RK73HB1J124J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
270
3.3K
33
120K
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R21
R24
R30
R31
R32
RK73HB1J472J
RK73HB1J122J
RK73HB1J102J
RK73HB1J222J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
1.2K
1.0K
2.2K
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R33
R34
R35
R36
R37,38
RK73HB1J220J
RK73HB1J332J
RK73HB1J124J
RK73HB1J100J
RK73HB1J273J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
22
3.3K
120K
10
27K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R39
R41
R42
R45
R46
RK73HB1J271J
RK73HB1J271J
R92-1368-05
RK73HB1J332J
RK73HB1J103J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
270
270
0 OHM
3.3K
10K
J 1/16W
J 1/16W
R47
R49
R50
R51
R52,53
RK73HB1J562J
RK73HB1J102J
RK73HB1J330J
RK73HB1J471J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
5.6K
1.0K
33
470
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R54
R55
R56
R58
R59
RK73HB1J470J
RK73HB1J472J
RK73HB1J103J
RK73HB1J470J
RK73HB1J123J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
47
4.7K
10K
47
12K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R60
R61,62
R64
R70-72
R74,75
RK73HB1J563J
RK73HB1J271J
R92-1368-05
RK73EB2ER39K
RK73HH1J104D
CHIP R
CHIP R
CHIP R
CHIP R
RESISTOR
56K
270
0 OHM
0.39
100K
J 1/16W
J 1/16W
K 1/4W
D 1/16W
R76-79
R80
R81
R82
R83
RK73HH1J154D
RK73HB1J103J
RK73HB1J394J
RK73HB1J273J
RK73HB1J563J
RESISTOR
CHIP R
CHIP R
CHIP R
CHIP R
150K
10K
390K
27K
56K
D
J
J
J
J
R84
RK73HB1J104J
CHIP R
100K
J 1/16W
20
E : TH-K4E
M2 : TH-K4AT
J 1/16W
J 1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
New
Ref. No. Address parts
Parts No.
Description
Destination
R85
R86
R88
R90
R91
RK73GB1J561J
RK73HB1J562J
RK73HB1J331J
RK73HB1J331J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
560
5.6K
330
330
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R92
R93
R94
R95
R96
RK73HB1J332J
RK73HB1J470J
RK73HB1J331J
RK73HB1J184J
RK73HB1J104J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
3.3K
47
330
180K
100K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R97
R98
R99,100
R101
R103
RK73HB1J154J
RK73HB1J104J
RK73HB1J105J
RK73HB1J470J
RK73HB1J182J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
150K
100K
1.0M
47
1.8K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R104
R107
R108
R109
R110,111
RK73HB1J151J
RK73HB1J104J
RK73HB1J124J
RK73HB1J104J
RK73HB1J105J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
150
100K
120K
100K
1.0M
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R115
R116
R117
R118
R119
RK73HB1J562J
RK73HB1J124J
RK73HH1J272D
RK73HB1J273J
RK73HB1J182J
CHIP R
CHIP R
RESISTOR
CHIP R
CHIP R
5.6K
120K
2.7K
27K
1.8K
J
J
D
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R120
R122
R123
R124
R125
RK73HB1J272J
RK73HB1J272J
RK73HB1J182J
RK73HB1J332J
RK73HB1J561J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
2.7K
2.7K
1.8K
3.3K
560
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R126
R127
R128
R130
R131
RK73HB1J273J
RK73HB1J470J
RK73HB1J332J
RK73HB1J101J
RK73HB1J334J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
27K
47
3.3K
100
330K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R132
R133
R134
R135
R137
RK73HB1J222J
RK73HB1J102J
RK73HB1J394J
RK73HB1J474J
RK73HB1J472J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
2.2K
1.0K
390K
470K
4.7K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R139
R140
R141,142
R143
R144
RK73HB1J472J
RK73HB1J103J
RK73HB1J102J
RK73HB1J273J
R92-1368-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
10K
1.0K
27K
0 OHM
J
J
J
J
1/16W
1/16W
1/16W
1/16W
R145,146
R147
R148
R151
R152
RK73HB1J472J
RK73HB1J103J
RK73HB1J562J
RK73HB1J122J
RK73HB1J222J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
10K
5.6K
1.2K
2.2K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R153
R154
R155,156
R157,158
R159
RK73HB1J102J
RK73HB1J472J
RK73HB1J104J
RK73HB1J334J
RK73HB1J124J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.0K
4.7K
100K
330K
120K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R160
R161
R162
R163
R164
RK73HB1J472J
RK73HB1J182J
RK73HB1J274J
RK73HB1J474J
RK73HB1J473J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
1.8K
270K
470K
47K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
TH-K4AT/K4E
PARTS LIST
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
Parts No.
Description
Destination
New
Ref. No. Address parts
Parts No.
Description
Destination
RK73HB1J824J
RK73HB1J184J
RK73HH1J563D
RK73HH1J393D
RK73HB1J103J
CHIP R
CHIP R
RESISTOR
RESISTOR
CHIP R
820K
180K
56K
39K
10K
J
J
D
D
J
1/16W
1/16W
1/16W
1/16W
1/16W
R246
R248
R252
R253,254
R255
RK73HB1J392J
RK73HB1J392J
RK73HB1J104J
RK73HB1J102J
R92-1368-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
3.9K
3.9K
100K
1.0K
0 OHM
J
J
J
J
1/16W
1/16W
1/16W
1/16W
R173
R174
R175
R176
R177
RK73HB1J153J
RK73HB1J564J
RK73HB1J222J
RK73HB1J824J
RK73HB1J103J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
15K
560K
2.2K
820K
10K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R256
R263
R271
R272
R273
RK73HB1J102J
RK73HB1J103J
RK73HB1J120J
RK73HB1J472J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
1.0K
10K
12
4.7K
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R178
R179
R180
R181
R182
R92-1368-05
RK73HB1J224J
RK73HB1J393J
RK73HB1J471J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
0 OHM
220K
39K
470
1.0K
J
J
J
J
1/16W
1/16W
1/16W
1/16W
R275-277
R282,283
R285,286
R289
R310
RK73HB1J473J
R92-1368-05
R92-1368-05
R92-1368-05
RK73HB1J392J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
47K
J 1/16W
0 OHM
0 OHM
0 OHM
3.9K
J 1/16W
R183
R185
R186
R188
R189
RK73HB1J333J
RK73HB1J274J
RK73HB1J683J
RK73HB1J470J
R92-1368-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
33K
270K
68K
47
0 OHM
J
J
J
J
1/16W
1/16W
1/16W
1/16W
R312
R313
R318
R323
R324,325
RK73HB1J472J
RK73HB1J332J
RK73HB1J102J
RK73HB1J472J
RK73HB1J473J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
3.3K
1.0K
4.7K
47K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R190,191
R192
R193
R194
R195
RK73HB1J473J
RK73HB1J471J
RK73HB1J182J
RK73HB1J103J
RK73HB1J101J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
47K
470
1.8K
10K
100
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R326
R328
R330
R332
R335
R92-1368-05
RK73HB1J474J
RK73HB1J471J
RK73FB2A150J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
0 OHM
470K
470
15
1.0K
J
J
J
J
1/16W
1/16W
1/10W
1/16W
R196
R197
R198
R199
R200
RK73HB1J103J
RK73HB1J101J
RK73HB1J103J
RK73HB1J102J
RK73HB1J103J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
10K
100
10K
1.0K
10K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R336
R337
R342,343
R344
R346
RK73HB1J221J
RK73HB1J471J
R92-1252-05
RK73HB1J470J
RK73HB1J101J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
220
470
0 OHM
47
100
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R201
R202
R203
R204
R205
RK73HB1J472J
RK73HB1J473J
RK73HB1J474J
RK73HB1J184J
RK73HB1J101J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
4.7K
47K
470K
180K
100
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
R347
R348
R351
R352,353
R354
RK73HB1J151J
RK73HB1J680J
RK73HB1J221J
R92-1368-05
RK73HB1J333J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
150
68
220
0 OHM
33K
J 1/16W
J 1/16W
J 1/16W
R206
R207
R208
R209
R210
RK73HB1J150J
RK73HB1J102J
RK73HB1J100J
RK73HB1J104J
RK73FB2A120J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
15
1.0K
10
100K
12
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/10W
R355
VR1
VR5,6
R92-1368-05
R32-0658-05
R32-0668-05
CHIP R
0 OHM
SEMI FIXED VARIABLE RESISTOR(100K)
SEMI FIXED VARIABLE RESISTOR(50K)
S70-0485-05
TACT SWITCH (PTT)
R211
R212
R213
R214
R215
RK73HB1J474J
RK73HB1J103J
RK73HB1J223J
RK73HB1J103J
RK73HB1J474J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
470K
10K
22K
10K
470K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
MIC1
T91-0580-05
MIC ELEMENT
R216
R217
R218
R223
R226
RK73HB1J103J
RK73HB1J821J
R92-1368-05
RK73HB1J104J
RK73HB1J221J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
10K
820
0 OHM
100K
220
J 1/16W
J 1/16W
D1-4
D5
D6
D7
D8,9
HVC376B
HSC277
1SV278
MA2S111
HSC277
VARIABLE CAPACITANCE DIODE
DIODE
VARIABLE CAPACITANCE DIODE
DIODE
DIODE
J 1/16W
J 1/16W
R227
R230
R231
R234
R235,236
RK73HB1J101J
RK73HB1J221J
RK73HB1J151J
RK73HB1J183J
RK73HB1J102J
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
100
220
150
18K
1.0K
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
D10-13
D14
D15
D16
D18-21
HVC131
RB521-S30
MA8039
MA2S111
1SV305
DIODE
DIODE
ZENER DIODE
DIODE
VARIABLE CAPACITANCE DIODE
R237
R238,239
R240
R241-243
R244
RK73HB1J104J
RK73HB1J102J
RK73HB1J104J
RK73HB1J334J
R92-1252-05
CHIP R
CHIP R
CHIP R
CHIP R
CHIP R
100K
1.0K
100K
330K
0 OHM
J
J
J
J
J
1/16W
1/16W
1/16W
1/16W
1/16W
D22
D24
D25
D26
D27
1SS361
MA742
MA2S111
1SS388
RB706F-40
DIODE
DIODE
DIODE
DIODE
DIODE
D30
D31
D32,33
RB521S-30
DA221
RB051L-40
DIODE
DIODE
DIODE
R165,166
R167,168
R170
R171
R172
E : TH-K4E
∗
∗
M2 : TH-K4AT
S7
∗
J 1/16W
M2
21
TH-K4AT/K4E
PARTS LIST
TX-RX UNIT (X57-675X-XX)
New
Ref. No. Address parts
D34
D35,36
D60-62
D61
D63-65
Parts No.
Description
MAZS0270H
RB521S-30
MA2S111
MA2S111
MA2S111
ZENER DIODE
DIODE
DIODE
DIODE
DIODE
D64,65
D69-73
D74
D79,80
D81
MA2S111
MA2S111
HSM88AS
DA221
RB521S-30
DIODE
DIODE
DIODE
DIODE
DIODE
IC1
IC2
IC3
IC4
IC5
LMX2316TMX
NJM2904V
TA31136FN
XC6202PB52FR
NJM2107F
MOS IC
MOS IC
MOS IC
MOS IC
MOS IC
TA7368F
90522BPFFG139
TK11250CM
S-80844CNNBB85
S-80930CNNBG80
MOS IC
MPU
MOS IC
MOS IC
MOS IC
TK11250CUCB
AT25160N10SI27
NJM2904V
2SK508NV(52K)
2SC5488
MOS IC
ROM IC
MOS IC
FET
TRANSISTOR
2SK1830
2SC4617(R)
2SC5488
2SC5488
2SC4926YD
FET
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
2SK2596
2SK3476
2SK1830
RN4902
2SC4617(R)
FET
FET
FET
TRANSISTOR
TRANSISTOR
3SK318
2SK1830
2SC4617(R)
RN2105
KTC4082
FET
FET
TRANSISTOR
TRANSISTOR
TRANSISTOR
2SC5488
2SK1830
2SC4919
2SC4617(R)
2SK1830
TRANSISTOR
FET
TRANSISTOR
TRANSISTOR
FET
2SB1184(Q,R)
2SK1830
2SJ347
2SB1184(Q,R)
2SC4617(R)
TRANSISTOR
FET
FET
TRANSISTOR
TRANSISTOR
RN2105
RN1701
2SK1830
RN4902
RN1107
TRANSISTOR
TRANSISTOR
FET
TRANSISTOR
TRANSISTOR
RN2701
CPH3317
CPH3417
RN2105
2SK1830
TRANSISTOR
FET
FET
TRANSISTOR
FET
IC6
IC8
IC9
IC10
IC11
IC12
IC15
IC16,17
Q1
Q2
Q3
Q4
Q5,6
Q9
Q10
Q11
Q12
Q13
Q14
Q15
Q16,17
Q20
Q21
Q22
Q23
Q24
Q27
Q29
Q30
Q31
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗
Q33
Q34,35
Q36
Q37
Q38
Q41
Q47
Q50
Q51
Q52
Q53
Q55
Q56
Q57
Q58
22
∗
∗
∗
∗
∗
∗
E : TH-K4E
M2 : TH-K4AT
Destination
New
Ref. No. Address parts
TH1
TH2-4
E
M2
M2
E
∗
Parts No.
B57331V2103J
B57331V2104J
Description
THERMISTOR
THERMISTOR
Destination
TH-K4AT/K4E
EXPLODED VIEW (TH-K4AT)
B
A
C
7
35
2
B
34
6
1
40
29
D
36
16
D
TX-RX Unit (B/3)
10
D
37
8
31
Dx2
Gx2
D
D
17
Ex2 D E
D
Dx2
TX-RX Unit (C/3)
20
18
9
D
15
23
33
2
TX-RX Unit (A/3)
28
39
14
Ax2
22
13
21
E
44
E
4
5
Fx2
701. STICKER
3
1
12
A : N09-1492-05
B : N14-0569-04
C : N14-0573-04
D : N79-2035-46
E : N79-2040-45
F : N82-2007-46
G : N09-2433-05
Parts with the exploded numbers larger than 700 are not supplied. 23
TH-K4AT/K4E
EXPLODED VIEW (TH-K4E)
D
C
C
7
35
3
B
34
6
1
40
38
29
D
16
D
TX-RX Unit (B/3)
10
D
37
8
31
Gx2
D
D
TX-RX Unit (C/3)
19
Dx2
20
18
Ex2 D E
D
Dx2
9
D
15
23
33
2
TX-RX Unit (A/3)
28
39
14
Ax2
22
13
21
E
44
E
4
5
Fx2
3
701. STICKER
12
A : N09-1492-05
B : N14-0569-04
C : N14-0573-04
D : N79-2035-46
E : N79-2040-45
F : N82-2007-46
G : N09-2433-05
24 Parts with the exploded numbers larger than 700 are not supplied.
TH-K4AT/K4E
PACKING (TH-K4E)
F
E
702. PAMPHLET (R & TTE)
703. PAMPHLET
704. WARRANTY CARD
1
11.INSTRUCTION MANUAL
(B62-1696-00)
(B62-1697-00)
(B62-1699-00)
(B62-1702-00)
(B62-1757-00)
(B62-1758-00)
2
42.CHARGER (230V/13.8V)
(W08-0959-05)
41.HELICAL ANTENNA
(T90-1019-25)
43.BATTERY ASSY
(7.2V/1100mAh)
(W09-0991-05)
26.PACKING FIXTURE
(H12-3146-01)
30. BELT HOOK ASSY
(J29-0709-04)
32.HANDSTRAP
(J69-0342-05)
24.ITEM CARTON CASE
(H52-1964-02)
3
705. UK PLUG ATTACHMENT
Parts with the exploded numbers larger than 700 are not supplied. 25
TH-K4AT/K4E
PACKING (TH-K4AT)
H
G
11.INSTRUCTION MANUAL
(B62-1695-00)
(B62-1696-00)
1
703. PAMPHLET
2
32.HANDSTRAP
(J69-0342-05)
1.CABINET ASSY
(BATTERY CASE)
(A02-3817-02)
25.ITEM CARTON CASE
(H52-1965-12)
41.HELICAL ANTENNA
(T90-1019-25)
30.BELT HOOK ASSY
(J29-0709-04)
27.PACKING FIXTURE
(H12-3147-03)
3
26 Parts with the exploded numbers larger than 700 are not supplied.
TH-K4AT/K4E
ADJUSTMENT
Single Tone Mode
This mode is used to check the DTMF deviation.
Operation
■ 16key (M2 type)
1. Press the [PTT] key on the transceiver to switch to the
transmission mode.
2. Press the [MONI] key to enter the single tone mode.
3. Press any key from [1] to [8] keys to transmit a single tone.
The single tone is consisting of eight frequencies.
[1] 697Hz
[2] 770Hz
[3] 852Hz
[4] 941Hz
[5] 1209Hz
[6] 1336Hz
[7] 1477Hz
[8] 1633Hz
4. When the [MONI] key is pressed again during the
transmission, the transceiver switches to the reception
mode, the single tone mode turns OFF.
■ 4key (E type)
1. Press the [PTT] key on the transceiver to switch to the
transmission mode.
2. Press the [MONI] key to enter the single tone mode.
3. When the [VFO] key is pressed during the transmission, a
DTMF “D” dual tone (combination of 1633 Hz and 941 Hz
frequencies) is transmitted.
4. When the [MR] key is pressed during the transmission,
single-tone 1633 Hz is transmitted.
5. When the [MONI] key is pressed again during the
transmission, the transceiver switch to the reception mode,
the single tone mode is turned OFF.
• The single tone mode can be enabled only during the
transmission.
• When DTMF memory is transmitted in the single tone
mode, the single tone mode turns OFF.
Adjustment Mode
This mode is used to replace or readjust the IC15 (EEPROM).
Adjust the following adjustment items after setting the
transceiver to “Adjustment Mode”.
■ Adjustment Items
A. Overvoltage warning reference voltage (14.8V [DC IN])
B. Battery terminal reference voltage (7.5 V [Battery terminal])
C. Squelch (SQL1, SQL2)
D. S-meter (Two segments in S-meter light, all segments in Smeter light)
E. RX BPF (Lower limit frequency, center frequency, upper
limit frequency)
F. 7.5V TX H power (Lower limit frequency, center frequency,
upper limit frequency)
G. 7.5V TX M power (Lower limit frequency, center frequency,
upper limit frequency)
H. 7.5V TX L power (Lower limit frequency, center frequency,
upper limit frequency)
I. 13.8V TX H power (Lower limit frequency, center frequency,
upper limit frequency)
J. 13.8V TX M power (Lower limit frequency, center frequency,
upper limit frequency)
K. 13.8V TX L power (Lower limit frequency, center frequency,
upper limit frequency)
L. DCS modulation balance
M.Tone deviation (Lower limit frequency, center frequency,
upper limit frequency)
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
O. VOX sensitivity (Level 1, level 9)
■ Operation in Adjustment Mode
1. Turn the transceiver ON.
2. Set the tone frequency to 151.4 Hz and the DCS code to
023 in Menu Mode to adjust tone and DCS modulation.
3. Set Adjustment Mode by shorting two lands (SET) on the
component side of the TX-RX unit (A/3).
Short these two lands
SET
4. When the Adjustment Mode is set, the “Overvoltage
warning reference voltage (14.8V [DC IN])” adjustment item
is displayed. (The “ ” icon on the upper side of the LCD
blinks while the transceiver is in the Adjustment Mode.)
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
Blink
The value stored in the
EEPROM. (00-FE)
Adjustment item
Current adjustment
value (00-FE)
5. The functions of transceiver keys in Adjustment Mode are
as follows:
27
TH-K4AT/K4E
ADJUSTMENT
Key name
PTT
LAMP
MONI
MENU
F
VFO
MR
CALL
Encoder
[key]
Transmit while this key is held down.
Changes adjustment items. (Forward)
When this key is pressed on the frequency display, it switches to the adjustment display.
Changes adjustment items. (Back)
When this key is pressed on the frequency display, it switches to the adjustment display.
Write adjustment values (adjustment display)
Sound error tone (frequency display)
Function mode/MHz mode ON
VFO mode
When this key is pressed on the adjustment display, it switches to the frequency display.
Memory mode
When this key is pressed on the adjustment display, it switches to the frequency display.
Switch between frequency display and adjustment display.
Each time this key is pressed, the LCD switches between the frequency display and
adjustment display.
Increase or decrease adjustment values (00 - FE). (adjustment display)
Increase or decrease frequency and memory channel number. (frequency display)
6. To exit the Adjustment Mode, turn the transceiver OFF.
Note:
• When you press [LAMP] or [MONI] key, ensure the bosses
of rubber keys align with the LAMP and MONI contacts of
the PTT PCB (C/3).
• In the Adjustment Mode, Transmission and Reception
frequencies becomes extensive.
A. Overvoltage warning reference voltage (14.8V [DC IN])
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DC” on the LCD.
The current voltage value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [MENU] key to write the current voltage value
into the EEPROM.
B. Battery terminal reference voltage (7.5 V [Battery
terminal])
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BAT” on the LCD.
Press the [F] key and then the [PTT] key repeatedly to turn
the “ ” icon ON. The current voltage value is displayed at
the lower digits of the frequency display, and the value
stored in the EEPROM is displayed on the memory channel
number display.
[F] key → [key]
Selecting a TX power (High/Mid/Low)
Lamp always ON
Squelch level setting mode
Function mode/MHz mode OFF
M→V (Memory shift)
M.IN (Memory registration)
Increase or decrease frequency (1MHz
step). (frequency display)
(2) Press the [PTT] key to enable the transmit mode.
(3) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(4) Press the [MENU] key to write the current voltage value
into the EEPROM.
C. Squelch (SQL1, SQL2)
1Squelch (SQL1)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ1” on the LCD.
The detected DC voltage value to the current noise level is
displayed at the lower digits of the frequency display, and
the value stored in the EEPROM is displayed on the memory
channel number display.
(2) Press the [MENU] key to write the current noise level value
into the EEPROM.
2Squelch (SQL2)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ2” on the LCD.
(2) Press the [MENU] key to write the current noise level value
into the EEPROM.
28
TH-K4AT/K4E
ADJUSTMENT
D. S-meter (Two segments in S-meter light, all segments
in S-meter light)
1S-meter (Two segments in S-meter light)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“S1” on the LCD.
The current RSSI level value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [MENU] key to write the current RSSI level value
into the EEPROM.
2S-meter (All segments in S-meter light)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“S9” on the LCD.
(2) Press the [MENU] key to write the current RSSI level value
into the EEPROM.
E. RX BPF (Lower limit frequency, center frequency, upper
limit frequency)
1RX BPF (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPL” on the LCD.
The current BPF tuning value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Turn the encoder to change the current BPF tuning value
and adjust RX BPF.
(6) Press the [MENU] key to write the current BPF tuning value
into the EEPROM.
2RX BPF (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPC” on the LCD.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limit
frequency)” described on page 29.
3RX BPF (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BPH” on the LCD.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper frequency on the
LCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limit
frequency)” described on page 29.
F. 7.5V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX H power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjust
the transmission power.
29
TH-K4AT/K4E
ADJUSTMENT
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX H power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (8) of “17.5V TX H power (Lower limit
frequency)” described on page 29.
37.5V TX H power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (8) of “17.5V TX H power (Lower limit
frequency)” described on page 29.
G. 7.5V TX M power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX M power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
30
(5) Press the [PTT] key to enable the transmit mode.
(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjust
the transmission power.
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX M power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (8) of “17.5V TX M power (Lower limit
frequency)” described on page 30.
37.5VTX M power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display upper limit frequency on the
LCD.
(4) Repeat steps (4) to (8) of “17.5V TX M power (Lower limit
frequency)” described on page 30.
H. 7.5V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX L power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
TH-K4AT/K4E
ADJUSTMENT
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjust
the transmission power.
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX L power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Turn the encoder to change the current APC value and adjust
the transmission power.
(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX H power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (8) of “17.5V TX L power (Lower limit
frequency)” described on page 30.
37.5V TX L power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display center frequency on the LCD.
(4) Repeat steps (4) to (7) of “113.8V TX H power (Lower
limit frequency)” described on page 31.
313.8V TX H power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (8) of “17.5V TX L power (Lower limit
frequency)” described on page 30.
I. 13.8V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX H power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display upper limit frequency on the
LCD.
(4) Repeat steps (4) to (7) of “113.8V TX H power (Lower
limit frequency)” described on page 31.
31
TH-K4AT/K4E
ADJUSTMENT
J. 13.8V TX M power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX M power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Turn the encoder to change the current APC value and adjust
the transmission power.
(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX M power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower
limit frequency)” described on page 32.
313.8V TX M power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
32
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower
limit frequency)” described on page 32.
K. 13.8V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX L power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.
In this case, the “ ” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable transmit mode.
(6) Turn the encoder to change the current APC value and adjust
transmission power.
(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX L power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “ ” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “113.8V TX L power (Lower limit
frequency)” described on page 32.
313.8V TX L power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “ ” icon appears.
TH-K4AT/K4E
ADJUSTMENT
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “113.8V TX L power (Lower limit
frequency)” described on page 32.
L. DCS modulation balance
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DCS.BAL” on the LCD. Press the [F] key and then the
[PTT] key repeatedly to turns the “ ” icon ON.
(2) When the [PTT] key is pressed to enable transmit mode, a
100Hz square waveform is internally generated and
modulated.
(3) While observing the waveforms on the oscilloscope, turn
the semi-fixed volume (VR6) to adjust the DCS modulation
waveform to a square waveform.
(4) When the DCS modulation waveform becomes a square
waveform, release the [PTT] key.
M.Tone deviation (Lower limit frequency, center
frequency, upper limit frequency)
1Tone deviation (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “ ” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “ ” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) When the [PTT] key is pressed to enable transmit mode, a
preset tone frequency (151.4Hz) is internally generated and
modulated.
(6) Turn the encoder to change the current adjustment value
and adjust tone deviation.
(7) Press the [MENU] key to write the current adjustment value
into the EEPROM.
2Tone deviation (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.
In this case, the “ ” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “1Tone deviation (Lower limit
frequency)” described on page 33.
3Tone deviation (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.
In this case, the “ ” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “1Tone deviation (Lower limit
frequency)” described on page 33.
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
1DCS deviation (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “ ” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
33
TH-K4AT/K4E
ADJUSTMENT
(4) Press the [CALL] key to switch to the adjustment display.
(5) When the [PTT] key is pressed to enable transmit mode, a
preset DCS code (023) is internally generated and
modulated.
(6) Turn the encoder to change the current adjustment value
and adjust DCS deviation.
(7) Press the [MENU] key to write the current adjustment value
into the EEPROM.
2DCS deviation (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “1DCS deviation (Lower limit
frequency)” described on page 33.
3DCS deviation (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “1DCS deviation (Lower limit
frequency)” described on page 33.
O. VOX sensitivity (Level 1, level 9)
1VOX sensitivity (Level 1)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“VOX1” on the LCD.
Press the [F] key and then the [PTT] key repeatedly to turn
the “ ” icon ON.
The current microphone input level value is displayed at
the lower digits of the frequency display, and the value
stored in the EEPROM is displayed on the memory channel
number display.
34
(2) Input a specified AG signal to microphone input.
(3) Press the [MENU] key to write the current microphone input
level value into the EEPROM.
2VOX sensitivity (Level 9)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“VOX9” on the LCD.
(2) Input a specified AG signal to microphone input.
(3) Press the [MENU] key to write the current microphone input
level value into the EEPROM.
TH-K4AT/K4E
ADJUSTMENT
Common Section
Item
Condition
Measurement
Test equipment
Unit
Adjustment
Terminal
Unit
Parts
Method
Specifications/
Remarks
1.Setting and Connect the optional PG-2W
LCD total illumination display
Initial configuration displayed after
resetting
DC cable to the power supply.
the full-reset.
DC IN terminal voltage: 13.8V
1) Total illumination display
confirmation
Turn the Transceiver Power ON by pressing the power switch while the [F] key is pressed.
While the [F] key is pressed, all LCD segments light.
2) Full-resetting
After confirming that all LCD segments have lighted described in the Step 1 above, release
the [F] key, and then press the [F] key twice while “FL.RST?” appears on the display.
2 VCO
After removing 3 screws fixing
Lock voltage the TX-RX unit (B/3), remove
Check
the TX-RX (B/3) unit from the
CN9 connector of the TX-RX
unit (A/3).
1) Frequency: 400.000MHz DVM
RX 2) Frequency: 469.990MHz
TX TX power: Low
1) Frequency: 400.000MHz
PTT: ON
2) Frequency: 469.990MHz
PTT: ON
After observing the VCO
lock voltage, connect the
TX-RX unit (B/3) to the
original position.
3.TX frequency 1) TX power: Low
f. counter
Adjust
Frequency: 439.990MHz
PTT: ON
4.Overvoltage Switch to Adjustment mode
warning
and carry out the operations
reference
for adjustment item A.
voltage
(Refer to page 28)
Adjust/Check 1) LCD display: DC
DC power supply
Frequency: 435.050MHz
DC IN terminal voltage: 14.8V
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
2) Frequency: 435.050MHz
DC IN terminal voltage: 17.5V
TX-RX
(A/3)
LV
Check
0.7V or more
4.3V or less
0.7V or more
4.3V or less
ANT
TX-RX
(A/3)
VR1
439.990MHz
[MENU]
Write
Check
±400Hz
Alarm sound and
display “DC ERR”
message.
35
TH-K4AT/K4E
ADJUSTMENT
Receiver section
Item
1.RX BPF
Adjust
Condition
Squelch level: 0
1) Frequency: 435.050MHz
SSG output: –53dBm (501 uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
Switch to Adjustment mode
and carry out the operations
for adjustment item E.
(Refer to page 29)
2) LCD display: BPL
Frequency: 400.050MHz
SSG: –119dBm (0.25 uV)
3) SSG: –110dBm (0.707 uV)
Unit
SSG
Oscilloscope
Distortion meter
AF V.M
Dummy load
TX-RX
(A/3)
Adjustment
Terminal
ANT
SP
Unit
Parts
Method
Turn the VOL knob 0.63V
to obtain 0.63V AF
output.
Encoder
[MENU]
Write
Max Sensitivity
Check
12dB SINAD or
more
Max Sensitivity
Encoder
[MENU]
6) LCD display: BPH
Frequency: 469.990MHz
SSG: –121dBm (0.199 uV)
7) SSG: –113dBm (0.501uV)
Encoder
[MENU]
Write
Check
Write
Check
SSG
Oscilloscope
Distortion meter
SSG
Specifications/
Remarks
VOL
knob
4) LCD display: BPC
Frequency: 435.050MHz
SSG: –120dBm (0.22 uV)
5) SSG: –120dBm (0.22 uV)
2.IF response 1) Frequency : 469.990MHz
Check
SSG Frequency: 450.565MHz
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF output: 0.63V/8Ω
2) Frequency : 400.050MHz
SSG Frequency: 380.625MHz
SSG output: –53dBm (501uV)
3) Frequency : 435.000MHz
SSG Frequency: 415.575MHz
SSG output: –53dBm (501uV)
3.Squelch /
Switch to Adjustment mode
S-meter
and carry out the operations
Write
for adjustment item C.
(Refer to page 28)
1) LCD display: SQ1
Frequency: 435.050MHz
SSG: –125dBm (0.126uV)
Squelch 2) LCD display: SQ2
Frequency: 435.050MHz
SSG: –120dBm (0.22uV)
36
Measurement
Test equipment
Check
12dB SINAD or
more
Max Sensitivity
12dB SINAD or
more
12dB SINAD or
less
Note: If the
specification is not
satisfied, repeat the
operations for
“1. RX BPF
Adjust”.
ANT
[MENU]
Write
[MENU]
Write
Note: In the
Squelch adjust
ments, all 4
adjusting points
including the Smeter must be
adjusted.
TH-K4AT/K4E
ADJUSTMENT
Item
Condition
Switch to Adjustment mode
and carry out the operations
for adjustment item D.
(Refer to page 29)
S-meter 3) LCD display: S1
Frequency: 435.050MHz
SSG: –120dBm (0.22uV)
4) LCD display: S9
Frequency: 435.050MHz
SSG: –105dBm (1.26uV)
4.Squelch
Squelch level: 1
Check
1) Frequency: 435.050MHz
SSG output: –123dBm (0.158uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
2) SSG: OFF
5.S-meter
1) Frequency: 435.050MHz
Check
SSG output: –120dBm (0.22uV)
Measurement
Test equipment
SSG
Unit
TX-RX
(A/3)
Adjustment
Terminal
ANT
Unit
Parts
Method
[MENU]
Write
[MENU]
Write
SSG
Oscilloscope
Distortion meter
Check
SSG
Check
2) SSG output: –105dBm (1.26uV)
6.Hum and
noise ratio
Check
1) Frequency: 435.050MHz
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF Output: 0.63V/8Ω
AF V.M = 0dB
2) SSG DEV: OFF
7.AF distortion 1) Frequency: 435.050MHz
Check
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF Output: 0.63V/8Ω
8.AF output
1) Frequency: 435.050MHz
Check
9.Current
Drain
Check
SSG
Oscilloscope
Distortion meter
AF V.M
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF distortion: 10%
Squelch level: 5
1) Frequency: 435.050MHz SSG
SSG output: OFF
Am meter
2) Frequency: 435.050MHz
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
VOL knob: Max
TX-RX
(A/3)
Specifications/
Remarks
Open Squelch
Close Squelch
Two segments
in S-meter light.
■■
All segments in
S-meter light.
■■■■■■■■■
ANT
SP
Check
Check
–38dB or less
5% or less
Check
400mW or more
Check
80mA or less
400mA or less
37
TH-K4AT/K4E
ADJUSTMENT
Transmitter section
Item
Condition
Measurement
Test equipment
Unit
Adjustment
Terminal
Unit
Parts
Method
DC power supply
1.TX power
Battery terminal voltage:
TX-RX B
DVM
Write (Battery 7.5V
(A/3)
GND
terminal: 7.5V) Note: Adjust the output voltage from DC power supply until the voltage at the battery terminal
becomes 7.5V while the transceiver is transmitting.
High power
Mid power
Low power
38
Switch to Adjustment mode
and carry out the operations
for adjustment item F.
(Refer to page 29)
1)LCD display: P7L,
Power meter
Frequency: 430.000MHz
Am meter
PTT: ON
2)LCD display: P7C,
Frequency: 435.000MHz
PTT: ON
3) LCD display: P7H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item G.
(Refer to page 30)
4)LCD display: P7L,
Frequency: 430.000MHz
PTT: ON
5)LCD display: P7C,
Frequency: 435.000MHz
PTT: ON
6)LCD display: P7H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carryout the operations
for adjustment item H.
(Refer to page 30)
7)LCD display: P7L,
Frequency: 430.000MHz
PTT: ON
8)LCD display: P7C,
Frequency: 435.000MHz
PTT: ON
9)LCD display: P7H,
Frequency: 439.995MHz
PTT: ON
ANT
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Specifications/
Remarks
Note: Do not
use the DC IN
terminal.
4.8W ±0.05W
2.1A or less
1.5W ±0.05W
1.4A or less
0.5W ±0.05W
0.8A or less
TH-K4AT/K4E
ADJUSTMENT
Item
Condition
2.TX power
Connect the optional PG-2W
Write (DC IN
DC cable to the power supply.
terminal: 13.8V) DC IN terminal voltage: 13.8V
Switch to Adjustment mode
and carry out the operations
for adjustment item I.
(Refer to page 31)
1)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
2)LCD display: P13C,
High power
Frequency: 435.000MHz
PTT: ON
3)LCD display: P13H,
Mid power
Low power
3.Battery
terminal
reference
voltage
Adjust/
Check
Measurement
Test equipment
Unit
Terminal
DC power supply
DVM
Power meter
Am meter
TX-RX
(A/3)
Unit
Adjustment
Parts
Method
Specifications/
Remarks
DC IN
ANT
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item J.
(Refer to page 32)
4)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
5)LCD display: P13C,
Frequency: 435.000MHz
PTT: ON
6)LCD display: P13H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item K.
(Refer to page 32)
7)LCD display: P13L,
Frequency: 430.000MHz
PTT: ON
8) LCD display: P13C,
Frequency: 435.000MHz
PTT: ON
9) LCD display: P13H,
Frequency: 439.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item B.
(Refer to page 28)
TX power: Low
1)LCD display: BAT
DC power supply
Frequency: 435.000MHz
DVM
PTT: ON
Battery terminal voltage: 7.5V
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 7.5V while the transceiver is transmitting.)
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
[MENU]
LCD
Write
Check
5.0W - 5.1W
2.0A or less
1.5W ±0.05W
1.4A or less
0.5W ±0.05W
0.8A or less
All segments
are lighted.
■■■■■■■■■
39
TH-K4AT/K4E
ADJUSTMENT
Item
Condition
Measurement
Test equipment
Unit
Terminal
Unit
To exit from the Adjustment DC power supply
Mode, turn the transceiver
DVM
power OFF and then ON.
2)Frequency: 435.000MHz
PTT: ON
Battery terminal voltage: 6.4V
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 6.4V while the transceiver is transmitting.)
4.DCS
modulation
balance
5.MAX DEV
6.MIC
sensitivity
Check
40
Switch to Adjustment mode Linear detector
and carry out the operations Oscilloscope
for adjustment item L.
(Refer to page 33)
Detector: +P, –P
HPF: OFF LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DCS.BAL
Frequency: 435.000MHz
PTT: ON
To exit from the Adjustment Linear detector
Mode, turn the transceiver
AG
power OFF and then ON.
Oscilloscope
MIC terminal input
AG: 1kHz/80mV
Detector: +P, –P
HPF: OFF LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 435.000MHz
PTT: ON
MIC terminal input
AG: 1kHz
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 435.000MHz
PTT: ON
TX-RX
(A/3)
Adjustment
Parts
Method
LCD
Check
VR6
By tuning the
VR6, adjust
the modulation
wave until
if becomes the
square wave.
4.2kHz
According to the
larger +, –.
Specifications/
Remarks
4 to 6 segments are
lighted.
■■■■ ~
■■■■■■
ANT
ANT
MIC
VR5
Change the AG
output level to
obtain 3kHz
deviation.
±0.1kHz
4mV - 12mV
TH-K4AT/K4E
ADJUSTMENT
Item
7.Tone
deviation
8.DCS
deviation
9.VOX
Sensitivity
Write
Condition
Measurement
Test equipment
Unit
Terminal
Switch to Adjustment mode Linear detector
and carry out the operations
for adjustment item M.
(Refer to page 33)
Detector: P-P/2
HPF: OFF
LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DVL,
Frequency: 430.000MHz
PTT: ON
2)LCD display: DVC,
Frequency: 435.000MHz
PTT: ON
3)LCD display: DVH,
Frequency: 439.990MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item N.
(Refer to page 33)
Detector: +P HOLD
HPF: OFF
LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DVL,
Frequency: 430.000MHz
PTT: ON
2)LCD display: DVC,
Frequency: 435.000MHz
PTT: ON
3)LCD display: DVH,
Frequency: 439.990MHz
PTT: ON
Switch to Adjustment mode AG
and carry out the operations
for adjustment item O.
(Refer to page 34)
TX power: Low
1)LCD display: VOX1
Frequency: 435.000MHz
AG: 1kHz/80mV
2)LCD display: VOX9
Frequency: 435.000MHz
AG: 1kHz/1.5mV
TX-RX
(A/3)
Unit
Adjustment
Parts
Method
Specifications/
Remarks
ANT
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
Encoder
[MENU]
Write
[MENU]
Write
[MENU]
Write
0.8kHz ±50Hz
0.8kHz ±50Hz
MIC
41
TH-K4AT/K4E
ADJUSTMENT
Item
Measurement
Test equipment
Unit
Terminal
Condition
10. VOX
Operation
Check
11. DTMF
DEV
Check
To exit from the Adjustment AG
Mode, turn the transceiver
power OFF and then ON.
1)Frequency: 435.000MHz
VOX Gain: 4
AG: OFF
2)AG: 1kHz/100mV
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 435.000MHz
Linear detector
Send DTMF code “D”
Note: For details of sending DTMF code “D”,
refer to the “Single Tone Mode” on page 27.
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 435.000MHz
Send 1750Hz Tone
13. Protection TX power: High
Check
1)Frequency: 435.000MHz
(DC IN
ANT: OPEN
terminal: 13.8V)
PTT: ON
TX-RX
(A/3)
ANT
Am meter
Adjustment points
TX-RX unit (A/3)
Component side view
ANT
SET
B
VR5
BTEMP VR6
GND
LCD
VR1
TX-RX UNIT (A/3)
Component side view
J2
DC IN
VR1
VR5
VR6
LV
42
: TX frequency
: MAX DEV
: DCS modulation valance
: VCO lock voltage terminal
J3
MIC
J4
SP
Adjustment
Parts
Method
Check
Specifications/
Remarks
Does not
transmit.
Transmits.
12. 1750Hz
Tone DEV
Check
(E type only)
LV
MIC
Unit
Check
2.0kHz - 4.2kHz
Check
2.5kHz - 4.5kHz
Check
2.4A or less
TH-K4AT/K4E
TERMINAL FUNCTION
CN No. Pin No. Pin Name
Function
TX-RX UNIT (A/3) : TX-RX↔VOL/ENC
CN1
1
2
3
4
5
6
GND
Vol-OUT
Vol-IN
EN2
GND
EN1
GND
RX audio volume output
RX audio volume input
Encoder 2
GND
Encoder 1
TX-RX UNIT (A/3) : TX-RX↔Internal speaker
CN2
1
2
SPK
SPG
Internal speaker audio
Audio ground
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (B/3) : 10KEY
CN6,
CN7
1
2
3
4
5
6
PTT
KIN4
KYO2
KYO1
BL
GND
PTT
Key matrix input
Key matrix output (MONI key)
Key matrix output (LAMP key)
LCD backlight control
GND
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (C/3) : PTT
CN8,
CN9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
KIN1
IM
KYO3
8M
KIN4
MIG
LAMP
GND
KYO0
KIN2
KYO1
KIN0
KYO2
KIN3
Key matrix input
Internal microphone
Key matrix output
8V power supply
Key matrix input
Microphone ground
Key illumination control
GND
Key matrix output
Key matrix input
Key matrix output
Key matrix input
Key matrix output
Key matrix input
43
A
1
B
C
D
E
TH-K4AT/K4E
F
G
H
I
J
PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
2
6 GND
KYO1
2 KIN4
BL 5
KYO2
PTT 1
C318
R154
TH1
C198
R86
FREQ
+
C118
C105
R78
R79
R74
R37
R140
R139
C195
R77
C109
R72
R71
R70
C213 +
F1
R76
F3
R80
C108
R166
C351
R165
C331
C106
1
R211
8
IC17
4
D81
C511
R210
R171
5
R1
C211
11
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC1
4D
IC17
9I
Q21
10D
Q36
10E
Q56
7L
D31
9F
D64
4H
IC2
8F
Q4
4C
Q22
10D
Q37
8L
Q57
8Q
D34
7L
D65
4H
IC3
9B
Q6
3E
Q23
6B
Q38
7K
D7
4B
D40
7S
D69
3G
IC6
6M
Q12
5J
Q24
8D
Q41
9Q
D14
8E
D41
7S
D70
3H
IC9
9P
Q13
7F
Q27
6H
Q47
7S
D15
9D
D60
3H
D71
3H
IC10
6P
Q14
9E
Q31
6L
Q51
4H
D16
4D
D61
3H
D72
3G
IC11
6Q
Q15
5E
Q34
9F
Q53
9Q
D25
6K
D62
3H
D81
10G
IC15
7P
Q20
10E
Q35
10F
Q55
5P
D26
7L
D63
3H
12
13
44
14
R157
C204
C203
R158
R168
C212
R159
C349
R324
R167
J2
DC IN
C339
Q35 R214
R332
D
S
G
R216
R148
C197
S
G
D
R215
C200
C512
R212
D31
R213
R272
Q36
R218
R120
S
D
G
Q21
R75
C110
Q34
G
D
S
R323
Q20
R117
C167
Q22
R115
R122
C170
C168
C169
R118
R119
C172
R123
C171
C194
R125
C175
C356
R116
R124
C173
R126
C174
1
C115
9
R135
8
4
C86
R152
R153
TH2
IC2
1 6
Q14
3 4
8
5
R81
R128
C180
C176
+
C112
C116
C182
IC3
R85
C183
R127
R82
C111
C117
16
R83
R134
Q24
R133
L58
R84
C191
R351
D15
C190
1
10
R189
C192
R188
C166
C125
C113
R90
R145
C78
VR1
R141
R146
C114
D14
C186
8
Q13
S
D
G
C107
R38
GND
C187
C56
R151
R142
C196
XF1
L46
R330
BTEMP
X1
C272
C55
TH3
DCS BAL
S
D Q27
G
D
S
C328
VR6
C54
R58
R137
C188
R255
R143
C70
Q12
G
R144
C271
Q23
VR5
R132
C126
MAX DEV
C193
B
C52
L64
R33
R147
C50
C51
C128
C57
SET
S
+
C66
R131
9
R231
C372
C370
C371
Q15
R252
D65
CP2
R34
D60
C44
C45
C46
D16
R35
C40
5
D61
9
R32
+
D71
1 6
Q51
3 4
8
KIN3 14
KIN0
KIN2
GND
MIG
8M
IM 2
C27
C41
L45
D72
D69
13 KYO2
KYO1
KYO0
LAMP
KIN4
KYO3
1 KIN1
+
R36
7
D64
CN9
C42
C189
D63
IC1
C38
CN6
D62
D70
C29
C43
16
C37
R21
6
+
R18
C30
C25
D7
4
C21
1
+
R30
C35
C1
C26
C22
R24
R20
Q4
+
L53
C33
R31
L67
LV
C20
Q6
+
3
R19
C34
CP1
C24
R172
J
K
L
M
N
O
P
Q
R
S
TH-K4AT/K4E
PC BOARD
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
2
6 GND
KYO1
2 KIN4
BL 5
PTT 1
KYO2
C310
R246
C313
C312
CN6
POWER
1
R248
3
COM0
COM1
LCD
C318
COM2
COM3
R252
SEG0
SEG1
R335
4
ANT
SEG2
SEG3
SEG4
C256
R208
R209
R223
C257
C258
Q55
SEG5
R207
R263
–
L49
SEG15
1
C279
C118
Q37
C
4
5
R238
SEG21
C360
C300
C302
SEG23
R244
SEG24
L63
3
1
SEG27
C346
IC9
SEG26
C351
SEG28
SEG29
J3
MIC
SEG30
J4
SP
C309
4 3
Q53
5 1
9
C347
C311
8
C348
Q41
C331
8
4
6
SEG25
R236
Q57 C344
SEG22
C246
+
R170
D41
+
SEG19
36 SEG31
212
10
C203
R158
R157
R159
204
7
SEG20
+
R171
C290
IC15
4 3
Q47
5 1
B
E
5
C291
SEG18
R202
65
R226
D40
CN2
INT. SP
R205
R86
C250
8
SEG16
SEG17
R227
+
C319
D
S
R237
C354
SEG14
C252
C355
Q56
6
C308
3 2
IC10
4 1
C307
R243
R242
C304
5
1 4
IC11
2 3
C306
C359
10
SEG11
SEG13
G
D26
D34
Q38
C512
6
R204
R206
C280
R217
TH1
SEG9
SEG10
SEG12
R355
C248
C368
SEG8
IC6
R203
C86
G Q31
D
S
C247
S
C249
G
C305
D25
SEG7
CP35 CP34
D
D
C345
C255
1
5
+
C253
Q12
R328
+
S
SEG6
R276
S
C317
R234
R172
J72-0884-19 (A/3)
11
Component side
Layer 1
Layer 2
Layer 3
Layer 4
12
Foil side
13
45
14
A
1
B
C
D
E
TH-K4AT/K4E
F
G
H
I
J
PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
2
C152
L18
R103
Q17
C153
C164
R109
R62
2
3
R108
R61
1
C156
D11
C89
4
4
C159
L40
C165
R104
C158
R110
D10
R107
R111
L38
C160
D20
C162
R353
C163
C161
C94
D21
L41
L20
R352
L22
R289
C361
L19
L21
C98
L30
D13
C93
D12
D74
C95
C97
C99
C101
C96
C100
L23
C102
3
R1
L36
C90
CN15
C91
R312
R256
R254
R253
R285
C88
CP32 CP33
R235
91
120
4
6
IC12
90
1
X3
R310
C87
C330
C314
C235
C316
CN17
R313
Q52
C206
Q30
D27
C224
R183
C227
D22
5
R182
1
R198
R199
C510
R240
C298
C231
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC4
10E
Q5
3N
Q33
9N
D6
3Q
D19
2L
D33
8N
IC5
10K
Q9
4N
Q52
7G
D8
4M
D20
3I
D35
7N
IC8
7E
Q10
5N
Q58
6K
D9
3M
D21
3H
D36
9D
IC12
6B
Q11
6M
D1
4R
D10
3G
D22
10J
D73
7N
IC16
8L
Q16
4L
D2
3R
D11
4G
D24
8I
D74
3F
Q1
4P
Q17
3J
D3
3R
D12
3F
D27
9J
D79
11I
Q2
3O
Q29
10J
D4
3R
D13
3G
D30
8N
D80
11I
Q3
3P
Q30
8J
D5
2Q
D18
2L
D32
8M
Q29
C238
D79
R196
C239
D80
C358
R195
J72-0884-19 (A/3)
46
R186
R193
C240
C297
C365
C241
3
C237
R194
4
+
11
14
R180
R192
R197
R200
R201
C299
IC4
C283
R239
13
R181
TH4
C242
R179
C223
C366
C367
C284
C286
C281
D36
R241
12
C226
C228
1
2
C20
R354
C285
10
C230
R342
C303
+
C229
C336
R282
R190
R283
R343
R191
D24
L68
C335
C332
R162
R185
60
CP31
31
8
C84
C357
R286
R325
C236
L25
61
30
C83
C294
C82
L16
C293
C295
6 ENCA
GND
ENCB
VOL IN
VOL OUT
1 GND
IC8
R318
CN1
9
CN10
3
1
R275
7
R326
R277
5
6
L17
R1
J
K
L
M
N
O
P
Q
R
S
TH-K4AT/K4E
PC BOARD
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
2
C145
L4
S
G
C5
C6
D
R6
C11
C10
D6
C3
C9
L5
R8
R10
C2
D2
L1
D1
C7
L6
L3
D
S
G Q1
R9
C13
R7
4
R49
C364
R52
C65
R42
L27
L56
L10
2
5
3
L26
R51
Q10
R88
4
R54
G
S
D
L54
R59
CN10
C73
R271
C326
B
C324
R39
L65
R60
1
C67
C363
R344
R346
C131
L14
Q58
S
D
G
R17
R348
C64
C130
R64
R11
R14
3
R50
R92
LV
D3
L2
C8
C369
R91
C129
R15
D4
Q2
Q9
2
R93
C75
R45
R4
R347
R94
3
C133
C134
1
C132
C329
4
C19
Q5
C61
R98
C142
R62
C77
R97
L24
R47
Q16
L15
C90
C139
R96
D8
C76
R109
Q17
L29
C137
L9
R95
L36
R16
C17
C18
D9
C136
Q3
C140
L8
C14
L28
C141
C146
R46
L32
C144
L35
1
2
C135
R103
C153
R100
L34
C15
R99
R101
R5
C4
D18
D19
C147
C157
C148
C152
3
R104
C164
R107
4
D5
R12
R53
6
L11
C68
Q11
L13
C71
C327
R130
C84
C83
C323
R56
R41
R55
D73
C72
7
L25
D35
C202
R164
R161
C209
C201
R155
C210
R156
R177
C178
L50
C220
R174
4
5
Q29
R176
C270
3
C221
R173
C338
IC5
1
C358
C
CF1
Q33
C231
9
CD1
B
C227
R182
C353
D30
C205
R175
C223
R183
8
R160
C222
D27
C225
R180
C224
1
C276
R179
D33
IC16
8
C352
R178
C228
C282
4
D32
C208
Q30
229
R163
R273
R181
C226
C207
C206
R162
5
E
C179
C124
+
10
C177
C219
11
Component side
Layer 1
Layer 2
Layer 3
Layer 4
12
Foil side
13
47
14
A
1
B
C
D
E
TH-K4AT/K4E
F
G
H
I
J
K
L
M
N
PC BOARD
O
P
Q
R
S
TH-K4AT/K4E
PC BOARD
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 A/3)
2
2
6 GND
C313
C312
BL 5
KYO2
C318
R335
C256
R208
R209
R223
C257
C258
Q55
SEG5
R263
C
5
R238
SEG21
C300
C302
SEG23
R77
C109
C246
R244
L63
C347
J4
SP
C309
C348
SEG30
9
36 SEG31
R157
C204
10
C203
R158
R168
J3
MIC
4 3
Q53
5 1
C212
R159
R167
C349
C339
S
G
R324
C311
D81
C511
D
Q35 R214
R210
D
C211
3
R211
SEG29
R170
J2
DC IN
1
SEG28
8
5
C346
IC9
Q41
C331
8
4
6
R72
R71
R70
F1
F3
R80
SEG27
R236
C360
Q57 C344
SEG22
SEG26
4
D41
4
7
4 3
Q47
5 1
+
C279
C118
Q37
C351
R171
D40
CN2
INT. SP
R205
R86
C198
SEG19
SEG25
IC17
C290
SEG20
C213 +
1
C291
IC15
SEG24
C106
C319
8
SEG16
SEG17
R226
+
SEG18
R202
R165
C317
1
R227
C354
SEG15
C250
+
C108
C355
–
L49
D
S
R237
6
C308
3 2
IC10
4 1
C307
R242
C304
5
1 4
IC11
2 3
R243
SEG11
C306
SEG9
SEG10
SEG14
C252
C345
G
C305
CP35 CP34
C359
Q56
B
E
R76
R328
R276
C255
10
TH1
SEG7
SEG13
G
D26
D34
Q38
R154
C200
C105
R78
R79
R74
+
1
R204
R206
C280
R153
D
SEG12
R355
C248
R217
R152
6
C247
C328
C368
S
SEG6
SEG8
IC6
R58
G Q31
D
S
R37
C195
5
VR5
C86
FREQ
R212
D31
R332
S
G
R272
Q36
R218
S
D
G
R216
R203
C78
R166
R213
R323
Q20
R120
R215
R151
S
C249
C512
R140
R139
R75
Q34
G
D
S
R148
C197
1
D
VR1
R141
R146
4
C110
C356
1 6
Q14
3 4
R117
Q21
C167
Q22
R115
C170
C107
R81
8
S
D Q27
G
TH2
IC2
C168
C169
R122
C171
R118
R119
C172
R123
C194
R125
C175
C112
R116
R124
C173
R126
C174
5
C115
9
R135
R82
C111
8
R85
R128
C180
C176
+
R83
R134
C183
C116
C182
IC3
C113
R84
C191
Q24
L58
R133
C117
R145
Q12
G
D25
R142
C196
XF1
GND
R189
C192
R188
D15
16
R127
10
R351
R330
BTEMP
X1
C187
C114
D14
C190
1
Q13
S
D
G
C56
C166
MAX DEV
R132
L46
9
R147
C52
L64
C193
B
C51
C272
8
TH3
DCS BAL
C125
SEG4
R207
+
C253
R144
R137
R90
4
ANT
SEG2
+
R143
C70
C271
C186
PTT 1
C372
C370
C371
C50
+
C126
R38
LCD
SEG0
S
VR6
C55
3
COM0
COM3
R252
SET
CP2
Q15
R131
C54
1
COM1
R234
R33
C188
POWER
R248
SEG1
C128
Q23
R246
COM2
D65
R231
C66
C57
KYO1
2 KIN4
C44
C45
C46
D16
R35
R34
C310
SEG3
C40
5
R255
9
R32
+
D60
8
D61
C27
KIN3 14
KIN0
KIN2
GND
MIG
8M
IM 2
+
D71
CN9
C41
L45
D64
1 6
Q51
3 4
C38
C42
7
D63
IC1
R36
C189
D72
C30
C25
D7
13 KYO2
KYO1
KYO0
LAMP
KIN4
KYO3
1 KIN1
C29
16
CN6
D62
D70
C37
R21
6
+
R18
C43
+
R30
D69
C21
1
C35
C1
C26
4
C22
R20
Q4
+
L53
C33
R31
L67
LV
R24
C20
Q6
+
3
R19
C34
CP1
C24
R172
J72-0884-19 (A/3)
11
11
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC1
4D
IC17
9I
Q21
10D
Q36
10E
Q56
7L
D31
9F
D64
4H
IC2
8F
Q4
4C
Q22
10D
Q37
8L
Q57
8Q
D34
7L
D65
4H
IC3
9B
Q6
3E
Q23
6B
Q38
7K
D7
4B
D40
7S
D69
3G
IC6
6M
Q12
5J
Q24
8D
Q41
9Q
D14
8E
D41
7S
D70
3H
IC9
9P
Q13
7F
Q27
6H
Q47
7S
D15
9D
D60
3H
D71
3H
IC10
6P
Q14
9E
Q31
6L
Q51
4H
D16
4D
D61
3H
D72
3G
IC11
6Q
Q15
5E
Q34
9F
Q53
9Q
D25
6K
D62
3H
D81
10G
IC15
7P
Q20
10E
Q35
10F
Q55
5P
D26
7L
D63
3H
12
13
44
14
Component side
Layer 1
Layer 2
Layer 3
Layer 4
12
Foil side
13
45
14
A
1
B
C
D
E
TH-K4AT/K4E
F
G
H
I
J
K
L
M
N
O
PC BOARD
P
Q
R
S
TH-K4AT/K4E
PC BOARD
1
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
TX-RX UNIT (X57-675X-XX) (A/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 A/3)
2
2
C145
C4
L4
S
G
C5
C6
D
R6
Q3
C15
C11
C10
D6
C3
C9
L5
R8
L1
C7
L6
L3
D
S
R9
C13
G Q1
R346
R17
R52
R42
L27
C65
5
L26
R88
4
C67
R54
G
S
D
L54
R271
C326
B
C324
R39
L65
1
R53
6
L11
C68
Q11
C327
R41
R55
D73
R130
C72
D33
IC16
8
C209
C201
C210
R175
R155
R156
C353
D30
C205
8
C276
R178
1
C352
R160
C222
C225
R177
C178
L50
B
Q29
R176
C270
C510
D79
R196
C239
D80
C338
1
R173
C231
C
C220
R174
C221
IC5
3
5
R198
R199
C298
R240
C238
4
D22
R194
R193
Q33
R182
CF1
C227
9
CD1
R183
C358
R195
C282
4
D32
C208
D27
C224
5
R161
R179
R180
R186
C365
C237
C240
C297
R163
C206
Q30
TH4
+
C241
3
4
3
R192
R197
R200
4
D1
R51
C71
C223
C366
C242
R201
C299
R239
R273
R181
C226
C230
L68
C367
C284
C286
C281
D36
IC4
D2
Q10
C363
L13
C357
R185
C229
C228
C283
L10
2
R56
C323
C84
C83
C82
L16
R286
R342
C303
R241
2
C207
R354
C285
C2
R49
C202
R164
D24
C336
1
R10
7
R162
R282
R190
R283
R343
R191
R7
D35
CP31
C335
C332
R11
R14
3
Q9
C132
C364
R59
CN10
C87
CN17
C295
R325
C236
60
C64
C73
C314
31
8
R348
C131
R344
LV
D3
L2
R50
R92
C129
D4
Q2
C8
C369
R91
R93
L8
L25
61
30
C61
2
R60
X3
3
6 ENCA
GND
ENCB
VOL IN
VOL OUT
1 GND
C294
L9
3
C130
Q58
S
D
G
R45
Q5
R15
R4
R347
R94
C134
C133
1
L56
R326
IC12
1
C235
C293
L24
L14
IC8
R318
D8
C139
4
R64
R313
R46
C135
R95
R97
C75
Q52
10
C329
C91
C77
90
R310
+
R98
C142
C90
C19
R47
Q16
L15
L29
C137
R96
R16
C17
C18
D9
C136
91
1
CN1
9
C141
2
R5
C14
L28
L36
L17
R235
R277
4
6
R275
7
C140
C76
R62
R61
C89
R312
R256
R254
R253
R285
CP32 CP33
120
C330
D18
C146
C88
5
C316
L32
C144
L35
CN15
6
D19
Q17
C147
C157
3
L18
R100
L34
R103
C156
R12
R99
R101
1
R108
D11
C153
C159
R109
C165
C148
C152
L40
4
C164
C158
R104
4
R110
D10
R107
R111
L38
R353
C160
D20
C162
C163
C161
C94
D21
L41
R352
L22
L20
R289
L19
L21
C98
L30
D13
C93
D12
D74
C95
C97
C99
C101
C361
L23
C102
3
C96
C100
D5
E
C179
C124
+
10
C177
C219
J72-0884-19 (A/3)
11
11
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC4
10E
Q5
3N
Q33
9N
D6
3Q
D19
2L
D33
8N
IC5
10K
Q9
4N
Q52
7G
D8
4M
D20
3I
D35
7N
IC8
7E
Q10
5N
Q58
6K
D9
3M
D21
3H
D36
9D
IC12
6B
Q11
6M
D1
4R
D10
3G
D22
10J
D73
7N
IC16
8L
Q16
4L
D2
3R
D11
4G
D24
8I
D74
3F
Q1
4P
Q17
3J
D3
3R
D12
3F
D27
9J
D79
11I
Q2
3O
Q29
10J
D4
3R
D13
3G
D30
8N
D80
11I
Q3
3P
Q30
8J
D5
2Q
D18
2L
D32
8M
12
13
46
14
Component side
Layer 1
Layer 2
Layer 3
Layer 4
12
Foil side
13
47
14
A
1
2
B
C
D
TH-K4AT/K4E
E
F
G
H
I
J
PC BOARD
TX-RX UNIT (X57-675X-XX) (B,C/3) 0-21 : M2 2-71 : E
Component side view (J72-0884-19 B,C/3)
3
MIC1
MENU
+
–
D42
4
1/F
5
2/VFO
3/MR
D43
F/CALL
D46
4
5
6
VFO
7
8
9
MR
6
7
D47
D44
8
*
0
#
CALL
9
J72-0884-19 (B/3)
10
MONI
LAMP
S7
PTT
11
J72-0884-19 (C/3)
Ref. No. Address
D42
4D
D43
5D
D44
8D
D46
5G
D47
8G
12
13
48
14
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Foil side
A
B
C
D
E
F
PC BOARD
G
H
I
J
TH-K4AT/K4E
TX-RX UNIT (X57-675X-XX) (B,C/3) 0-21 : M2 2-71 : E
Foil side view (J72-0884-19 B,C/3)
1
2
3
CN8
C243
–
14 KIN3
KIN0
KIN2
GND
MIG
8M
2 IM
+
KYO2 13
KYO1
KYO0
LAMP
KIN4
KYO3
KIN1 1
Q50
G
D
S
R336
4
5
R337
6
7
R230
8
9
J72-0884-19 (B/3)
10
2 KIN4
KYO1
6 GND
CN7
PTT 1
BL 5
KYO2
D48
D49
C374
11
J72-0884-19 (C/3)
Ref. No. Address
Q50
3I
D48
11C
D49
11B
Component side
12
Foil side
13
Layer 1
Layer 2
Layer 3
Layer 4
49
14
A
B
C
TH-K4AT/K4E
D
E
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
1
MOD
MOD
VOLIN
VOLIN
5MS
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
ENCA
ENCB
SIGIN
NAR
TO
R170
R324
C349
180k
C212
180k
47k
0.1u
C339
4.7k
RB521S-30
470p
C281
B30-2157-05
100
R227
0.022u
270k
DTMF/1750
10
R208
R223
R234
C258
100k
18k
0.1u
1000p
R209
100k
DTMF/BEEP/1750
+B
5C/5R/5T
470k
Q36
NI-MH
TEMPERATURE
DETECTION
Q38
2SC4617(R)
D34
R215
10k
R214
22k
DC IN
DETECTION
8V
Q37
4.93V
Q36
2SJ347
AVR
7.12V
AF AMP/
LAMP AVR
820
470p
0.5A
Q37
2SB1184(Q,R)
MAZS0270H
13.57V
F3
R217
1u
4.7k
R272
D36
1k
F1
1
GND
4
1k
R273
AF AMP
Q35
2SK1830
D35
RB521S-30
C282
470p
R207
5
C257
15
4
1000p
R206
RIPPLE
C256
VIN
C255
C253
10u10
NF
7.14V
2
3
PRE-GND
7
6
1
2.5A
R213
D33,35,36
REVERSE
CURRENT
PREVENTION
C284
470p
VOUT
VSS
2
VIN
3
C283
11.5V AVR
BTEMP
CHARGE
C207
R179
VCC
10u10
100
1u
470p
C249
1
PW-GND
PHASE
11.43V
C285
Q33 OPERATION SW
39k
R160
10k
33k
C227
C222
470p
C224
100k
2.2u4
R354 TH4
68k
0.1u
R177
C223
820k
R205
R355
0
180k
D26
1SS388
470p
TA7368F
POUT
5M
470k
470p
10k
R212
C271
470p
470p
C272
X57-675 1/5
VOX DETECTION
RECTIFICATION
8
Q31
Q56 OPERATION SW
C353
13.40V
D31
DA221
Q34
2SK1830
10
C252
C276
12
470p
CONSTANTCURRENT
CIRCUIT
0.1u
9
RB051L-40
C286
CHARGE SW
15
R211
0.1u
IC6
L49
D33
IC4
XC6202PB52FR
R210
Q33
2SB1184(Q,R)
L68
D24
MA742
C229
C279
D81
REVERSE CURRENT
PREVENTION
470p
R332
0 Q30
2SC4617(R)
VOX
DETECTION AMP
C228
3.23V
100p
C248
470k
C511
D30
RB521S-30
Q31
2SK1830
C368
470p
1u
REVERSE CURRENT
PREVENTION
R178
MICM
RXD
PTTE
IM
MIG
TXD
SPM
Q56 CPH3417
R204
D25
SP MUTE SW
0.1u
47k
R202
SP MUTE
SPEED UP
MA2S111
R203
470p
D81
RB521S-30
C338
1u
D27
RB706F-40
33k
C250
C242
4.7k
C352
C270
470p
C225
MIC ALC
RECTIFICATION
R201
D32
RB051L-40
R175
2.2k
MICM
RXD
PTTE
IM
MIG
TXD
SPM
VOLOUT
C247
L50
J2
50
1k
0.01u
470p
REVERSE CURRENT
PREVENTION
R183
R186
REM
VOLOUT
C239
470p
C238
100u10
V+ 5
MIC MUTE
CONTROL
D26
C246 DISCHARGE
SPG
4
MIC
MUTE
SW
D22
Q29
2SC4919 1SS361
R182
PTTE
10k
C241
470p
C240
C367
470p
10k
560k
R174
10k
1k
13.8V
7
1
R176
100
R200
2
BATTERY
TERMINAL
2
R173
R196
R199
C246
6
3
IM
MIG
TXD
CN2
1 SPK
DC IN
C221
0.01u
0.1u
R193
1.8k
R195
100
R198
470p
C365
470p
C366
D79
DA221
470p
R197
SPG
REM/TXD
SPK
AFO
SP
8 OHM
C219
0.047u
HPF
IC5
NJM2107F
-t
J4
C358
0.047u
RXD
10k
5MS
D80
DA221
R194
PTT
MIC
IM
SP
C237
5MS
470
10u10
470p
C231
R192
0.047u
15k
D79,80
LIMITER
C206
0.018u
270k
47k
R161
1.8k
R180
47k
C205
0.047u
220k
4700p
1u
R185
R191
R181
470
R190
T:4.95V
R:0V
C226
0.1u
C220
C510
5
0.01u
0.01u
470p
0.01u
REM
5MV
1
MIC
470p
C209
C236
CN1
J3
47k
0.01u
C280
GND
4
C210
470p
2
270p
1k
3
GND
R335
VOLIN
VOLOUT
WIDE/NARROW
CHANGEOVER SW
C235
R164
100k
C202
10k
4
82p
5
4
100k
R216
5
ENCB
6
0
6
GND
3
R218
ENCA
1200p
R156
R152
W/N
470k
C208
7
C230
MAX DEV
R155
R163
T:4.95V
R:0V
8
V+
2
4.7k
Q27
2SK1830
1
C201
R162
1u
C200
C198
4.7k
0.01u
ROTARY
ENCODER
&
VOL KNOB
VR5
50k
R154
1k
1.2k
10k
R153
470
2.2k
0
RXLED
TONE
DTMF/BEEP
REM
VOXIN
R330
R151
100k
R137
5.6k
4.7u6.3
4.7k
TH3
R148
R147
C291
470p
470p
MIC AMP
MOD
VOLIN
5MS
ENCB
ENCA
NAR
R144
C290
5T
IC16
NJM2904V
-t
C193
TX/BUSY
LED SW
DCS BAL
VR6
50k
27k
C197
R146
4.7k
0.027u
10k
TH2
100k
R145
1k
R143
4.7k
R139
-t
R142
C196
1k
0.027u
R141
R140
C195
QT/DQT
0.047u
R168
Q47
RN1701
R159
R167
0.012u
10u10
120k
C204
820k
R166
C211
2200p
GND
4
3
2
1
0.033u
5
6
7
8
V+
820k
BUSY LED
T:3.29V
R:110mV
T:73mV
R:3.39V
330k
IC17
NJM2904V
CTCSS/DCS FILTER
3
D40
R226
R158
R165
470p
T0
39k
(D)
R171
TX LED
220
R157
C331
5MS
56k
(D)
330k
C203
120p
C351
0.01u
2
4.7u6.3
C213
2.02V
T:0V
R:4.90V
B30-2156-05
D41
10k
R172
ENCA
ENCB
AVR
CONSTANTVOLTAGE
4.42V
Q38
Q37 OPERATION SW
5C/5R/5T AVR
8V
AFAMP
5M
BTDET
DCDET
+B
BTEMP
CHARGE
F
G
H
I
J
TH-K4AT/K4E
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
MOD
MOD
VOLIN
VOLIN
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
ENCA
ENCB
SIGIN
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
ENCA
ENCB
LCD (B38-0881-05)
SEG30
SEG31
36
35
SEG30
SEG31
SEG28
SEG29
34
33
SEG28
SEG29
SEG27
SEG26
32
31
SEG26
SEG27
SEG24
SEG25
30
29
SEG24
SEG23
SEG25
SEG22
SEG23
28
SEG21
27
SEG22
SEG20
26
SEG21
SEG19
25
SEG20
SEG18
24
SEG19
SEG18
23
SEG17
SEG16
21
22
SEG17
SEG16
SEG14
SEG15
20
19
SEG14
SEG15
SEG12
SEG13
18
17
SEG12
SEG13
SEG11
SEG10
15
16
SEG11
SEG9
SEG10
SEG7
SEG9
SEG5
SEG8
14
13
SEG8
SEG7
12
SEG6
SEG6
SEG3
SEG4
SEG5
11
10
9
SEG3
SEG4
SEG1
SEG2
8
COM3
COM2
COM1
SEG0
SEG1
SEG2
7
6
SEG0
5
COM3
4
COM2
3
2
COM1
COM0
1
COM0
5M
RXLED
TEMP
SMV
SQV
LAMP
5MS SW
TONE
DTMF/BEEP
REM
VOXIN
R283
R282
R342
0
R343
0
0
0
31
32
33
34
35
36
SEG14
SEG14
SEG15
VSS
C0R1
ENCA
ENCB
5MS
37
38
SEG15
30
SEG13
COM3
SEG12
VSS
SEG11
SEG16
SEG10
63
28
64
SEG16
27
65
SEG17
26
SEG17
SEG9
66
SEG18
25
SEG18
SEG8
67
SEG19
24
SEG19
SEG7
68
SEG20
23
SEG20
SEG6
SEG21
SEG5
69
SEG21
22
70
SEG22
21
SEG22
SEG4
71
SEG23
20
SEG23
SEG3
72
SEG24
19
SEG24
SEG2
NC
SEG1
73
18
74
17
NC
SEG0
75
SEG25
MPU
FINAL
SEG25
76
SEG26
SEG26
SEG27
SEG27
PTTI
SEG28
PTTE
79
SEG29
SEG29
TXD
SEG30
RXD
SEG31
SPM
V0
AFM
V1
VCC
V2
KAPC
V3
BPF/APC
0
47k
84
85
HST(VCC)
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
16
5M
5C SW
14
R318
13
1k
9
R313
8
3.3k
6
R310
5
3.9k
VOX
87
EEPCS
MD2
88
MD1
EEPDI
MD0
DATA
89
PTTI
4.95V
BPF/APC
VOX
4
EEPCS
3
EEPDI
120
119
VSS
KOUT3
118
1
BTDET
CLOCK
KOUT2
117
KOUT1
5T
KOUT0
116
115
5R
SHIFT
113
114
NOAA
112
MICM
111
TYPE
VUKEY
110
109
KIN3
KIN4
108
107
KIN2
106
KIN1
105
104
103
KIN0
PLLLD
PLLEN
102
101
BSFT
RXLED
99
100
INTDW
VCC
INTUP
97
98
PWRSW
96
95
94
X1
93
92
91
X0
VSS
RESET
C359
DCDET
2
90
47k
SEG6
7
86
47k
R276
R326
R277
83
R275
SEG8
SEG7
10
82
0.1u
SEG9
11
81
MICM
RXD
PTTE
IM
MIG
TXD
SPM
SEG10
12
80
SEG31
SEG11
5C(SAVE)
90522BPFFG139
78
SEG30
SEG13
SEG12
15
IC8
77
SEG28
29
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
62
DVCC
DVSS
39
DTMF/BEEP
TONE
40
41
42
AVRH
AVCC
43
44
AVRL
AVSS
45
46
REM
SQ
SIGIN
47
48
SM
49
VOXIN
THERM
50
51
52
BATT
BTEMP
C332
0.1u
C335
0.1u
0.1u
53
54
VCC
CHARGE
COM2
55
56
LAMP
58
59
57
AFAMP
61
NAR
COM1
CP31
3.9k
COM3
COM0
60
COM2
C336
4.7k
R323
BATT
COM0
COM1
C360
0.1u
R325
47k
5R SW
5T SW
INT0
RESET
PWR SW
5C/5R/5T AVR
8V
AFAMP
5M
BTDET
DCDET
+B
BTEMP
CHARGE
0
5p
0
R285
RXD
PTTE
IM
MIG
TXD
SPM
4.7k
R312
1k
R253
CP32 1k
1k
CP33 1k
1k
R254
CP34 1k
R256
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
TYPE
KIN4
KIN3
KIN2
KIN1
KIN0
1k
R286
BEAT SHIFT SW
R235
5p
C295
C294
Q52
RN1107
X3
7.982MHz
47p
CP35
1k
C293
ON:4.91V
RXD
PTTE
IM
MIG
TXD
SPM
5C/5R/5T AVR
8V
5M
+B
X57-675 2/5
K
L
M
TH-K4AT/K4E
N
O
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
MOD
VOLIN
MOD
VOLIN
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
1
IC12
TK11250CUCB
5T
5R
Q55
CPH3317
470p
R328
C347
470p
470k
C345
10u10
5R/5MV
SW
C344
LAMP
5MS SW
5T SW
T:4.99V
R:0V
Q53
RN2701
3
2
NP
GND
CONT
C346
T:0V
R:4.90V
5.03V
470p
SI
IC15
AT25160N10SI27
T:4.95V
R:0V
C319
GND
4.83V
C330
1k
Q41
RN2105
VOUT
R236
5.0V AVR
Q57
RN2105
5MS SW
4.95V
6
5
SCK
4
5C SW
VIN
1k
4
R238
470p
WP
6
C314
7
3
0.1u
470p
HOLD
470p
VCC
SO
0.01u
CS
2
C354
8
1
470p
C355
EEPROM
5MV
C316
5C
100k
5MS
R237
CLOCK
DATA
5M
C348
470p
470p
1u
C299
330k
100k
R241
1k
C298
R239
R240
0.1u
C297
BATT
330k
C308
470p
C307
0.1u
47p
C306
C305
VSS
3
C303
150u6.3
3
2
VDD
CD
IC11
S-80930CNNBG80
IC10
S-80844CNNBB85
3.3V VOLTAGE DETECTION
BPF/APC
1u
C310
C312
C313
0.039u
3.9k
0.039u
R246
3.9k
4.80V
OUT
4
NC
R244
470p
470p
OUT
VDD
470p
C304
4.98V
C302
C300
470p
C309
1u
5MS
100k
R248
4
VSS
RESET
4.4V VOLTAGE DETECTION
R252
+B
LAMP
330k
1
INT0
0
5M
R243
1
0.1u
2
R242
6
5.0V AVR
CONT 1
VIN
5
GND1 2
GND2
4
NP 3
VOUT
IC9
TK11250CM
4.79V
C311
L63
5C SW
PTTI
POWER SW
MA2S111
KIN4 2
2
KYO2 3
3
KYO1 4
4
BL 5
5
GND 6
6
150
R231
SET
KIN1
MR
*
0
#
CALL
5M
+B
BOARD
470
D42-44,46,47
470p
KEY
ILLUMINATION
Q50
LED
2SK1830
KEY LED SW
ON:4.92V
10KEY
B30-2205-05
9
R337
8
* R230
7
D46
VFO
F/CALL
* D44
6
MIC1
* D47
3/MR
5
220
B30-2205-05
2/VFO
4
D42
R336
2
3
4
5
6
7
8
9
10
11
12
14
13
1/F
470p
CN8
C243
1
1
IM
2
KYO3
3
8M
4
MIG
KIN4
5
6
LAMP
7
GND
KIN2
10
8
KYO1
11
KYO0
KIN0
12
9
KIN3
KYO2
14
13
TX-RX UNIT
(X57-675X-XX)(B/3)
CN9
MENU
5C/5R/5T AVR
8V
X57-675 3/5
Q51
RN4902
LCD LED SW
D43
B30-2205-05
IM
MIG
470p
C370
C371
5R SW
5T SW
INT0
RESET
PWR SW
470p
C372
ON:6.98V
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
TYPE
KIN4
KIN3
KIN2
KIN1
KIN0
S7
S70-0485-05
CN7
1
PTT
MONI
* C374
LAMP
D48,49
D48
LCD
ILLUMINATION
LED
D49
B30-2237-05
D72
MA2S111
D71
MA2S111
REVERSE
CURRENT
PREVENTION
D70
MA2S111
D69-72
D69
MA2S111
EEPDI
CN6
PTT 1
0
JUMPER
BIT0
R255
EEPCS
D65
BIT1
D64
MA2S111
BIT2
V/U
BIT3
* D63
* D62
D61
VOX
MA2S111
BPF/APC
* D60
KEY
TYPE
TX-RX UNIT
(X57-675X-XX)(C/3)
470p
MARKET CODE
DETECTION
10k
R263
D62-65
D61
UHF TYPE DETECTION
C317
470p
C318
D60
KEY TYPE DETECTION
B30-2237-05
PTT BOARD
P
Q
R
S
T
TH-K4AT/K4E
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
MOD
VOLIN
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5T
+B
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
TEMP
FINAL
KAPC
CN15
CN17
D1-4
22n
L9
R17
18n
3.3k
R15
5.6k
100
12p
RF AMP
C29
470p
C18
33
C17
R18
270
470p
R16
47
R14
470p
0.01u
C10
C14
3.3k
L8
R9
L5
270n
C9
5p (B)
C3
2p (B)
1SV278
D6
470p
C6
100k
0.1u
8p
Q5
2SC5488
R346
R8
1k
R7
47k
C5
D5
HSC277
R4
C4
C15
RF AMP
150
C7
0.5p
(B)
L2
0.5p
(B)
470p
6.8n
D3
HVC376B
D4
FREQUENCY SHIFT
Q2
2SC5488
C13
R12
22n
Q1
2SK508NV(52K)
150k
47
39p (G)
VCO
R10
L3
HVC376B
L4
R11
L6
270n
C2
270n
270n
HVC376B
D2
HVC376B
L1
0.01u
SHIFT
C1
QT/DQT
PLLEN
DATA
CLOCK
PLLLD
5C
TO
5MS
MOD
SQV
SMV
NAR
5R
AFM
VOLIN
LV
L67
C19
C8 5p (B)
D1
22u6.3
VCO FREQUENCY CONTROL
D6
4.63V
4.7k
R21
MA2S111
D7
470p
RIPPLE FILTER
C26
C25
C30
470p
C11
470p
R5 100k
R6 1k
CP1
Q4
2SC4617(R)
3.76V
VCO SHIFT
CONTROL SW
470p
2.7k
VCO MODULATION
Q3
2SK1830
SHIFT
1
2
FLO
CPO
VP
16
15
VCC2
FO/LD
GND1
3
4
FIN
GND2
LE
DATA
13
CE
CLK
12
11
14
5
6
FIN
VCC1
7
8
OSCI
GND3
9
10
10
4.7u6.3
C42
470p
C41
C43
PLLEN
DATA
CLOCK
PLLLD
CF1
L72-0968-05
450kHz
2nd L.O.
4.77V
0.01u
2p
R131
560n
0.51V
R132
2.2k
Q23
KTC4082
TRIPLER
100
C189
470p
R130
IC3
TA31136FN
4.81V
C190
R134
390k
0.01u
C192
R189
1k
820n
R133
L58
R188
SQV
0.72V
C191
0.01u
0.1u
C179
C178
0.01u
SMV
47
0.1u
C183
120p
IF AMP
Q24
2SC5488
0
OSCIN
MIXIN
1
OSCOUT
16
GND
2
15
VCC
N-DET
MIXOUT
14
13
N-REC
3
0.1u
4
5
DEC
IFOUT
IFIN
6
FILIN
AFOUT
RSSI
470k
C176
7
C180
0.1u
470p
3.3k
CD1
450kHz
10u10
2.7k
WIDE/NARROW
CHANGEOVER SW
W:115mV
N:4.94V
Q22
RN2105
C177
R120
0.1u
5R
BPF/APC
FM IC
0.01u
R128
2.7k
(D)
47
27k
R118
AF MUTE SW
11
1.8k
C182
2.7k
9
1.8k
1800p
0.068u
R124
3.3k
C172
0.068u
C171
R123
0.1u
R122
C194
R119
R127
5.6k
R115
Q20
2SK1830
C170
R117
0.1u
C124
BPF/APC
SQV
SMV
NAR
5R
AFM
VOLIN
C167
C169
FILOUT
27k
120k
AF FILTER
Q21
2SC4617(R)
10
R116
22p
560
R126
C175
R125
0.1u
C168
180p
QUAD
C174
12
R135
180p
8
C173
SQ FILTER
330k
C188
24p
560n
C187
C186
5R
C166
L46
T:0V
R:4.62V
24p
L45
100p
100p
100p
C45
CP2
3.9k
C44
10p
C46
C52
C54
470p
22p
10p
4.7u
0.01u
X1
L77-1931-05
C57
GND OUTPUT
C51
0.01u
KAPC
L64
C55
470p
27k
C56
PLL IC
IC1
LMX2316TMX
VCC
12.8MHz
R38
QT/DQT
PLLEN
DATA
CLOCK
PLLLD
5C
BPF/APC
SQV
SMV
NAR
5R
AFM
VOLIN
R32
4.81V
R36
RF AMP
4.63V
MA2S111 1k
C40
0.1u
R37 27k
Q6 5p
2SC5488
22p
D16
VR1
470p
C33
0.22u35
R24
1.2k
C34
2.2u6.3
C35
0.1u35
FREQ
VC
C20
0.01u
C50
100k
120k
C38
D16
1.51V
470p
TEMP
FINAL
4p
PLL LOCK DETECTION
R35 120k
BPF/APC
R19
C22
C37
470p
1k
C24
12n
C21
2.2k
L53
1k
R30
R20
10u10
C27
R31
SPEED UP
5R
5R
BPF/APC
X57-675 4/5
U
V
W
TH-K4AT/K4E
X
Y
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
1
10.37V
47p
8p
L56
C77
4.7n
C76
L15
12p
4.7n
C329
470p
C72
47
470p
R54
0.1u
C71
DRIVE
AMP
C327
L54
R55 4.7k
R56 10k
C75
18p
D73
MA2S111
C66
0.1u
VOLTAGE
DROP
Q10 OPERATION SW
C364
0.1u
27n
L65
R39
1u
C70
270
270
R41
L11
R53
C67
470p
470p
C324
22
1k
R52
10p
3.3k
4.91V
Q11
2SK2596
C363
R34
Q15
2SC4617(R)
R33
C61 470p
15n
1k
0
18n
L10
R42
470
R51
33
C64
R50
470p
470p
R348
5.6k
R47
R46
10k
Q10
2SC4926YD
68
C369
D9
HSC277
RF SW
R45
DRIVE
AMP
1.43V
150
2.03V
HSC277
3.3k
1k
D8
R49
Q9
2SC5488
R347
RF SW
47
470p
1.98V
L14
10p
12
RF AMP
R344
C326
C73
R271
470p
L13
C68
6.8n
T:4.86V
R:0V
C65 10p
4.7n
T:4.31V
R:0V
5T
+B
2
5T
5T
VGG
VDD
10.56V
D10
4T
VGG
5T
3p
(B)
(B)
4p
5p
(B)
0
HVC131
OVER INPUT
PROTECTION
D13
HVC131
D12
D74
HSM88AS
470p
C361
(B)
3p
C90
470p
C91
470p
C93
2.30V
(HIGH POWER)
R289
470p
C323
Q58
2SK1830
ANT
(B)
(B)
L23
1u
(B)
4p
2p
4T
L30
4T
2p C100 2p
C102
C98
C99
270
C95
R62
ANTENNA SW
L19
270
1p
(B)
HVC131
L22
4T
C96
(B)
(G)
L18
220n
470p
0.01u
C82
C84
0.1u
C83
1u
C357
R61
L21
4T
C94
470p
D11
C101
L20
HVC131
C97
33p
L16
L25
18p
R58
C328
C89
Q12 GATE
VOLTAGE SW
R64
1u
0
470p
R60
C78
56k
12k
R59
ANTENNA SW
L17
2.5n
C88
20p
47
CN10
56p
C87
T:0V
R:0V
C86
Q12
POWER
2SK3476
AMP
3
D12,13
ANTENNA SW
5T
TEMP
FINAL
150k (D)
C356
0.01u
R83
5.6k
R86
APC
D14
56k
+B
KAPC
-t
10k
470p
TH1
C118
470p
C117
4
D15
APC OUTPUT
VOLTAGE LIMITTER
470p
470p
C115
C110
MA8039
470p
D15
C112
C116
5
27k
R78
R79
560
10u4
390k
470p
B+IN
R81
RB521S-30
C114
5R
C107
APC
CIRCUIT
OPERATION
SWITCH
470p
5T
GND
R85
TEMP COMPENSATION
B-IN
6
R82
(D)
BOUT
A+IN
Q14
RN4902
7
(D)
100k
Q13
2SK1830
150k
4
A-IN
APC OUTPUT SW
8
V+
100k
3
NJM2904V
AOUT
470p
R84
2
C111
470p
(D)
R77
150k
R75
IC2
1
470p
470p
APC
DIFFERENTIAL
AMP
100p
C109
470p
C105
0.39
C106
R72
0.39
0.39
R71
R70
(D)
C113
(D)
C108
R74 100k
R80 10k
* C512
R76 150k
KAPC(APC KILL)
D14
5R
BPF/APC
3p
L40
C161
470p
0
R352
0
L41
6.8n
3p (B)
4.7n
13p (G)
C160
D21
C162 R353
470p
C163
1SV305
13p (G)
(B)
1.0M
1.0M
12n
L38
C158
100k
R109
C165
(B)
D20
120k
100k
1.8k
150
470p
R104
C153
150n
R103
470p
47
Q17
3SK318
RX 1st AMP
3p
1SV305
4.30V
C152
L35
R101
27n
18p
(G)
6p (B)
C148
1SV305
L34
C157
1.0M
D19
470p
C147
1.0M
R100
27n
18p
(G)
1SV305
R99
D18
470p
C141
0.01u
C132
5R
L36
56n
R108
4p (B)
C156
470p
R107
4p (B)
3.14V
470p
C142
4.56V
C164
C146
(B)
C144 L32
C140
C145
8p
150k
100k
R98
100k
R96
470p
0.01u
C134
2.80V
470p
5
D20,21
RX BPF TUNING
C159
R110
R111
R95
D18,19
RX BPF TUNING
3.10V
11p
C133
330
R94
R92
3.3k
C129
Q16
3SK318
C131
R93
10p
1st MIXER
4.56V
0.01u
47
1.5p
C126
220
C125
R351
L26
330
680n
470n
0.01u
L27
470p
330
R88
C130
C128
R90
1k
R91
1st IF
XF1
L71-0619-05
180k
L24
38.85MHz
R97
5p
5p
470p
7p
C136
C139
C137
15n
27n
L29
C135
L28
12n
REVERSE CURRENT PREVENTION
5R
6
X57-675X-XX
D44
D47
D60
D62
D63
R230
C374
C512
2-71
TH-K4E
E
NO
NO
MA2S111
MA2S111
NO
NO
100p
100p
0-21
TH-K4AT
M2
B30-2205-05
B30-2205-05
NO
NO
MA2S111
220
NO
NO
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
Note : The components marked with a
dot ( ● ) are parts of layer1.
X57-675 5/5
7
TH-K4AT/K4E
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-675X-XX)(A/3)
5M
+B
7
8
9
MR
*
0
#
CALL
5M
+B
BOARD
47p
8p
C77
C76
L56
6.8n
4.7n
47
470p
L13
C72
470p
R55 4.7k
R56 10k
0.1u
47
C73
R54
0.1u
C71
L54
4.7n
C327
L65
L14
R344
27n
270
R39
R41
1u
C70
D73
(B)
3p
C102
(B)
C101
4p
(B)
L23
1u
5p
C99
C97
(B)
4p
2p
4T
C95
(B)
(G)
L18
220n
470p
0.01u
C82
C84
0.1u
C83
L19
L16
L25
1u
C357
HVC131
D13
HVC131
D12
D74
HSM88AS
470p
C361
(B)
3p
C90
470p
C91
470p
C93
OVER INPUT
PROTECTION
0
D12,13
ANTENNA SW
470p
C356
0.01u
R83
D14
100k
470p
R84
C113
27k
R86
5.6k
-t
10k
470p
TH1
C118
470p
C117
MA8039
D15
APC
56k
D15
APC OUTPUT
VOLTAGE LIMITTER
470p
C110
10u4
470p
C116
C112
R82
R78
R79
150k (D)
560
TEMP COMPENSATION
5
C115
B+IN
R85
470p
GND
6
390k
RB521S-30
C114
B-IN
R81
(D)
150k
A+IN
Q14
RN4902
7
5R
3p
4.7n
L40
C161
3p (B)
C162 R353
470p
0
R352
0
L41
6.8n
C160
D21
1SV305
1.0M
1.0M
C163
13p (G)
(B)
13p (G)
1SV305
12n
L38
C158
100k
R109
D20
120k
R108
470p
100k
1.8k
150
470p
R104
C153
150n
R103
470p
47
C152
L35
Q17
3SK318
RX 1st AMP
C165
(B)
470p
C156
470p
56n
R101
27n
18p
(G)
6p (B)
C148
1SV305
L34
C157
1.0M
D19
1.0M
R100
27n
18p
(G)
C147
470p
D18
1SV305
R99
C145
8p
150k
3.14V
4.30V
3p
R110
R111
R95
100k
R98
470p
C141
0.01u
C132
100
C189
470p
R130
4.56V
L36
C164
4p (B)
RX BPF TUNING
C159
R107
C146
4p (B)
(B)
C144 L32
C140
C142
5R
5R
BPF/APC
D20,21
2.80V
470p
100k
R96
470p
0.01u
C134
C133
330
R94
0.01u
C131
D18,19
RX BPF TUNING
3.10V
11p
Q16
3SK318
R92
3.3k
470p
47
R93
C130
10p
2.2k
1k
R91
680n
1st MIXER
4.56V
C129
330
L26
L27
470n
R88
R97
5p
C136
REVERSE CURRENT PREVENTION
180k
7p
470p
C137
15n
5R
BPF/APC
FM IC
IC3
TA31136FN
D44
D47
D60
D62
D63
R230
C374
C512
2-71
TH-K4E
E
NO
NO
MA2S111
MA2S111
NO
NO
100p
100p
0-21
TH-K4AT
M2
B30-2205-05
B30-2205-05
NO
NO
MA2S111
220
NO
NO
X57-675X-XX
4.81V
C190
R134
390k
0.72V
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
C191
0.01u
0
0.01u
IF AMP
Q24
2SC5488
R189
1k
820n
R133
C192
R188
47
L58
0.1u
ANT
(B)
27n
L29
1.5p
220
C125
C126
560n
0.01u
R132
C188
24p
560n
L46
24p
L45
R351
0.51V
2p
C186
SQV
4T
0.1u
C179
C178
0.01u
CD1
450kHz
C177
2.7k
WIDE/NARROW
CHANGEOVER SW
W:115mV
N:4.94V
Q22
RN2105
10u10
R120
270
(B)
APC OUTPUT SW
8
V+
BOUT
A-IN
C111
470p
3
R80 10k
(D)
R77
150k
470p
470p
C109
470p
C105
0.39
C106
R72
0.39
0.39
R70
R71
470p
C107
L28
12n
C139
470p
C41
C42
4.7u6.3
C128
330k
1
OSCIN
16
MIXIN
2
GND
3
MIXOUT
OSCOUT
N-REC
14
4
VCC
N-DET
13
DEC
IFOUT
11
15
C183
0.1u
1800p
C172
120p
2.7k
(D)
MA2S111
C66
0.1u
18p
470p
C323
C328
R64
1u
0
470p
R60
C78
56k
12k
R59
* C512
1k
470p
C21
2
1
FLO
CPO
VP
VCC2
15
GND1
FO/LD
3
4
FIN
GND2
LE
DATA
13
14
5
FILOUT
QUAD
AFOUT
9
10
FILIN
27k
22p
560
R126
C175
R125
470p
C171
0.1u
3.3k
C180
C88
20p
47
56p
C87
C86
22u6.3
C29
R58
C14
R21
MA2S111
4.7k
R20
10u10
7
6
FIN
OSCI
VCC1
CLK
12
16
R131
0.01u
R128
R62
ANTENNA SW
L30
4T
2p C100 2p
KAPC(APC KILL)
Q23
KTC4082
1.8k
47
27k
R118
2.7k
1.8k
R127
5.6k
AF MUTE SW
R123
R122
C194
0.068u
R119
R124
3.3k
270
15n
L11
R53
C67
470p
470p
C324
1k
R52
22
470
R51
33
R50
R33
C61 470p
L9
R17
470p
33
C18
R18
R16
C17
270
470p
3.3k
R14
47
470p
47
R10
0.01u
1k
0
18n
R42
L10
1k
R49
C64
470p
470p
R348
68
C369
5.6k
R47
R46
10k
R45
3.3k
22n
3.3k
R15
5.6k
18n
L8
R9
150
L5
C10
D7
470p
C26
C25
GND3
CE
11
10
2
NJM2904V
AOUT
+B
L24
C54
0.01u
C170
R117
0.1u
Q20
2SK1830
R115
VOLIN
R337
* R230
470
D42-44,46,47
KEY
ILLUMINATION
Q50
LED
2SK1830
KEY LED SW
ON:4.92V
10KEY
0.068u
0.1u
VFO
BPF/APC
SQV
SMV
NAR
5R
AFM
6
C169
C167
B30-2205-05
5
470p
C243
5C/5R/5T AVR
8V
MIC1
D46
4
F/CALL
AF FILTER
Q21
2SC4617(R)
CN8
* D44
3/MR
4.77V
0.01u
120k
CN9
R336
1
2
3
4
5
6
7
8
9
10
11
12
2/VFO
0.1u
C168
470p
470p
C370
470p
C372
C371
KIN1
1
IM
2
KYO3
3
8M
4
MIG
KIN4
5
6
LAMP
7
KIN2
10
GND
KYO1
11
8
KIN0
12
KYO0
KYO2
1/F
R116
270
KAPC
C187
C166
180p
TX-RX UNIT
(X57-675X-XX)(B/3)
MENU
TXD
SPM
5C/5R/5T AVR
8V
9
KIN3
14
13
14
IM
MIG
13
4.7k
R312
CP32 1k
CP33 1k
1k
R253
1k
1k
R254
R256
CP34 1k
5p
IM
MIG
IC2
1
TRIPLER
Q51
RN4902
R61
C98
(B)
HVC131
L22
4T
1p
D14
C173
C124
5C/5R/5T AVR
8V
AFAMP
5M
BTDET
DCDET
+B
BTEMP
CHARGE
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
TYPE
KIN4
KIN3
KIN2
KIN1
KIN0
APC
CIRCUIT
OPERATION
SWITCH
330
5R
PTT BOARD
LCD LED SW
* D47
5C/5R/5T AVR
8V
AFAMP
5M
BTDET
DCDET
+B
BTEMP
CHARGE
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
TYPE
KIN4
KIN3
KIN2
KIN1
KIN0
(D)
Q13
2SK1830
2nd L.O.
T:0V
R:4.62V
ON:6.98V
5R SW
5T SW
INT0
RESET
PWR SW
R75
5p
CF1
L72-0968-05
450kHz
B30-2237-05
D11
L21
4T
C96
R289
APC
DIFFERENTIAL
AMP
100p
(D)
38.85MHz
C182
D72
MA2S111
C360
0.1u
(D)
100k
PLL IC
IC1
LMX2316TMX
R90
D48
6
Q58
2SK1830
C108
1st IF
LCD
ILLUMINATION
LED
D49
B30-2237-05
SET
RF AMP
XF1
L71-0619-05
D48,49
L20
C94
470p
Q12 GATE
VOLTAGE SW
4
0.1u
GND 6
Q6 5p
2SC5488
* C374
LAMP
D10
HVC131
R76 150k
R74 100k
MONI
C176
5
C20
PLLEN
DATA
CLOCK
PLLLD
5
BL 5
120k
CP2
3.9k
6
4
PTT
C43
22p
33p
5T
5T
0.01u
4.7u
IFIN
KYO1 4
R19
470p
C135
X1
L77-1931-05
C51
100p
GND OUTPUT
L64
100p
12.8MHz
RSSI
3
CN10
C89
TEMP
FINAL
5R
12
KYO2 3
C24
12n
KAPC
C55
470p
C317
POWER SW
BIT0
BIT1
BIT2
D71
MA2S111
D69-72
REVERSE
CURRENT
PREVENTION
2
L53
TEMP
FINAL
10
SMV
EEPDI
S7
S70-0485-05
CN7
1
KIN4 2
8
4.81V
470k
EEPDI
1
RXD
PTTE
T:0V
R:0V
2.30V
(HIGH POWER)
VCC
7
VOX
EEPCS
CN6
PTT 1
220
B30-2205-05
4.42V
0
270n
C9
5p (B)
C3
2p (B)
1SV278
9
100k
R135
VOX
EEPCS
470p
C30
MA2S111
C40
0.1u
1k
DRIVE
AMP
ANTENNA SW
L17
2.5n
VGG
5T
C22
C44
TX-RX UNIT
(X57-675X-XX)(C/3)
150
BPF/APC
MA2S111
BPF/APC
D65
3.9k
D64
5
MA2S111
R310
BIT3
TYPE
4.95V
470p
R32
8
D62-65
MARKET CODE
DETECTION
* D63
6
1k
Q12
POWER
2SK3476
AMP
4.63V
D16
4.7n
VDD
R12
L6
270n
C7
0.5p
(B)
L2
C27
C33
0.22u35
R24
1.2k
2.2u6.3
0.1u35
C34
VR1
BPF/APC
L15
12p
5T
R8
C6
100k
470p
0.1u
1k
C11
470p
R5 100k
R6 1k
CP1
C308
470p
C307
C35
C306
0.1u
47p
470p
C305
3.3V VOLTAGE DETECTION
10p
VOLTAGE
DROP
Q10 OPERATION SW
4.63V
22p
PLL LOCK DETECTION
R35 120k
Q11
2SK2596
C363
C329
470p
10.56V
D16
D60
KEY TYPE DETECTION
470p
C75
18p
RF AMP
0.01u
C50
R36
D42
RXD
PTTE
IM
MIG
TXD
SPM
CP35
1k
R285
AVR
CONSTANTVOLTAGE
R235
4.91V
C38
C45
PTTI
12
C364
VGG
100
4p
IC11
S-80930CNNBG80
VC
V/U
3.3k
0
C294
Q52
RN1107
R286
AVR
5p
C295
X3
7.982MHz
47p
R346
C37
470p
100p
PTTI
BTDET
120
VSS
119
118
KOUT3
KOUT2
117
KOUT1
5T
KOUT0
116
115
5R
SHIFT
113
114
NOAA
112
MICM
111
TYPE
VUKEY
110
109
KIN3
KIN4
108
107
KIN2
106
KIN1
105
104
103
KIN0
PLLLD
PLLEN
102
101
BSFT
100
99
RXLED
DCDET
INTDW
98
97
INTUP
PWRSW
95
VCC
94
X1
X0
93
92
91
CLOCK
C5
R4
6.8n
L4
470p
R328
470k
C345
1
VSS
CD
470p
5C SW
10p
1.98V
3.3k
Q15
2SC4617(R)
5T
SPEED UP
1k
4
NC
C304
3
C303
150u6.3
470p
C302
OUT
470p
VDD
2
CONT 1
VIN
5
GND1 2
GND2
4
NP 3
VOUT
IC9
TK11250CM
6
C300
470p
VDD
1.51V
2
C359
270n
HVC376B
D3
0.01u
SHIFT
QT/DQT
PLLEN
DATA
CLOCK
PLLLD
5C
TO
5MS
MOD
C1
HVC376B
D4
Q53
RN2701
10u10
470p
C319
C330
2.7k
0.1u
C297
R313
3
D6
5T
5R
5MV
IC12
TK11250CUCB
SQV
SMV
NAR
5R
AFM
VOLIN
1
2
NP
6
470p
C344
C314
C346
470p
4
VOUT
VIN
CONT
GND
3
5C
5MS
C309
1u
3
2
IC10
S-80844CNNBB85
R231
DATA
VSS
47k
R275
2.2k
L63
D61
8
4
C15
12p
R30
R37 27k
UHF TYPE DETECTION
9
R325
47k
1000p
ON:4.91V
8V
MAZS0270H
D34
5C SW
5R SW
5T SW
INT0
RESET
PWR SW
7.12V
Q38
Q37 OPERATION SW
OUT
RESET
JUMPER
EEPDI
MD0
96
10
820
R217
C280
0
R335
Q36
NI-MH
TEMPERATURE
DETECTION
Q36
2SJ347
R244
R31
4.80V
180p
BEAT SHIFT SW
10k
R216
470k
R215
10k
DC IN
DETECTION
4
VSS
R271
C326
R34
RF AMP
RIPPLE FILTER
C174
AF AMP/
LAMP AVR
Q38
2SC4617(R)
VCO SHIFT
CONTROL SW
SQ FILTER
Q37
4.93V
1k
5M
Q4
2SC4617(R)
3.76V
330k
1
INT0
4.98V
D43
B30-2205-05
D36
RB521S-30
470p
C281
R208
C279
0.5A
Q37
2SB1184(Q,R)
470p
470p
C276
13.57V
F3
13
5M
C293
5C/5R/5T
R218
RB521S-30
C282
470p
0.1u
+B
Q35
2SK1830
D35
C258
18k
330k
3.9k
0
MD1
88
DTMF/BEEP/1750
1
GND
4
BTEMP
CHARGE
VOUT
VSS
2
VIN
3
C283
Q33 OPERATION SW
REVERSE
CURRENT
PREVENTION
C284
470p
R234
F1
R214
D33,35,36
R223
100k
C257
AF AMP
R209
100k
0.1u
BPF/APC
R255
EEPCS
RESET
1000p
RIPPLE
1k
R318
VOX
MD2
90
C256
NF
R207
5
C255
1u
15
4
10u10
100
R205
C250
1SS388
R355
0
470p
C248
0.1u
470p
VIN
14
BPF/APC
HST(VCC)
0.1u
SEG0
16
KAPC
87
3
5M
470p
10k
R212
C271
470p
470p
R206
11.43V
C285
11.5V AVR
Q34
2SK1830
C253
2
SEG1
3.9k
D70
MA2S111
0
47k
V2
85
V3
7.14V
470p
13.40V
470k
470p
C272
180k
D26
C353
R211
D31
DA221
CONSTANTCURRENT
CIRCUIT
6
10u10
22k
CHARGE SW
7
100p
1
2.5A
R213
Q33
2SB1184(Q,R)
12
VCC
PHASE
4.7k
R210
RB051L-40
PW-GND
PRE-GND
C252
D33
15
1
SEG2
7
86
TA7368F
POUT
8
Q31
Q56 OPERATION SW
470p
R332
D30
RB521S-30
R204
D81
REVERSE CURRENT
PREVENTION
C511
10
9
R272
1u
1u
C338
L49
1k
470p
D81
RB521S-30
REVERSE CURRENT
PREVENTION
BATTERY
TERMINAL
470k
C368
470p
C352
C270
470p
Q31
2SK1830
MA2S111
R203
C286
DC IN
D25
D32
RB051L-40
IC4
XC6202PB52FR
L50
C247
13.8V
J2
IC6
3.23V
Q56 CPH3417
0.1u
REVERSE CURRENT
PREVENTION
SP MUTE
SPEED UP
47k
100u10
SPG
R202
2
SP MUTE SW
C246 DISCHARGE
C246
C249
CN2
1 SPK
SP
8 OHM
Q3
2SK1830
R243
R246
* D62
VCC
47k
FREQ
R248
SEG3
D61
AFM
V1
89
D26
R242
SEG4
MA2S111
V0
C13
8p
Q5
2SC5488
SHIFT
SEG5
D69
MA2S111
MICM
RXD
PTTE
IM
MIG
TXD
SPM
R326
MICM
RXD
PTTE
IM
MIG
TXD
SPM
R277
MICM
RXD
PTTE
IM
MIG
TXD
SPM
VOLOUT
C311
C68
Q10
2SC4926YD
D6
4.4V VOLTAGE DETECTION
SPM
84
R7
HSC277
10
83
VOX DETECTION
RECTIFICATION
SEG6
11
SEG31
0.1u
D5
150k
Q2
2SC5488
0.5p
(B)
C46
RXD
Q1
2SK508NV(52K)
10p
TXD
SEG30
FREQUENCY SHIFT
C52
SEG29
22n
C348
0
SEG7
12
82
47k
33k
C227
0.1u
SEG31
C347
R11
VCO
470p
PTTE
L3
39p (G)
10p
PTTI
SEG28
C2
HVC376B
C57
SEG27
81
R276
100k
2.2u4
R354 TH4
68k
R186
C229
C228
SEG9
SEG8
5C(SAVE)
80
SEG30
SEG10
15
IC8
90522BPFFG139
78
L68
D24
MA742
5.0V AVR
SEG11
KEY
DTMF/1750
FINAL
HVC376B
D2
470p
27k
17
SEG0
MPU
L1
Q55
CPH3317
C19
C8 5p (B)
270n
C4
C56
SEG1
NC
SEG29
D27
RB706F-40
33k
5T SW
R38
18
79
R183
L67
D9
HSC277
RF SW
T:4.99V
R:0V
QT/DQT
PLLEN
DATA
CLOCK
PLLLD
5C
SEG2
CN17
D1-4
BPF/APC
SQV
SMV
NAR
5R
AFM
VOLIN
19
SEG25
SEG27
CN15
DRIVE
AMP
1.43V
150
2.03V
HSC277
KAPC
D1
10k
20
SEG12
R263
SEG3
SEG26
TEMP
FINAL
1u
SEG4
77
CLOCK
DATA
B30-2157-05
1k
0.022u
21
SEG22
SEG23
SEG13
C310
22
SEG5
NC
SEG28
MIC ALC
RECTIFICATION
R201
23
SEG6
76
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
4.79V
0.039u
24
SEG24
SEG26
330k
C312
25
75
1k
C313
SEG7
73
SEG25
R241
0.039u
SEG8
SEG19
74
VOX
DETECTION AMP
R239
* D60
0 Q30
2SC4617(R)
270k
R179
C207
R162
R160
C222
10k
1u
D8
5R/5MV
SW
5MS
SEG18
71
SEG24
BATT
100k
SEG9
SEG21
SEG22
5.03V
Q9
2SC5488
R347
RF SW
VCO MODULATION
470p
26
SEG17
70
SEG23
4.83V
10.37V
T:4.86V
R:0V
C65 10p
LV
T:0V
R:4.90V
T:4.31V
R:0V
5T
+B
RF AMP
470p
R252
27
SEG10
72
R178
0.1u
R177
2.2k
470p
C224
C223
820k
R176
REM
1k
4.7k
C242
470p
V+ 5
MIC MUTE
CONTROL
0.01u
10k
560k
R174
R193
10k
R200
1k
470p
C240
VOLOUT
PTTE
470p
C239
10k
470p
C238
R196
100
R199
C241
R198
470p
C365
1
MIC
MUTE
SW
D22
Q29
2SC4919 1SS361
R182
IM
MIG
TXD
SPG
REM/TXD
SPK
AFO
2
C225
R175
4
-t
470p
C366
R195
HPF
IC5
NJM2107F
3
0.01u
D79
DA221
100
C367
470p
0.047u
RXD
R197
C221
R173
D80
DA221
10k
5MS
0.047u
R194
PTT
MIC
IM
C219
1.8k
C237
5MS
0.047u
10u10
470p
C231
R192
C358
15k
D79,80
LIMITER
29
28
SEG20
SEG21
Q41
RN2105
T:4.95V
R:0V
470p
C318
SEG11
69
39k
47k
0.018u
270k
47k
1.8k
0.047u
4700p
R180
R191
220k
R190
SEG20
1k
+B
LAMP
VSS
67
SEG19
R236
Q57
RN2105
5MS SW
4.95V
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
32
33
34
35
36
31
SEG14
SEG15
VSS
C0R1
ENCA
37
5MS
ENCB
DTMF/BEEP
DVSS
39
40
TONE
41
42
AVCC
AVRH
43
44
AVRL
45
AVSS
SIGIN
REM
46
47
SQ
48
SM
VOXIN
49
50
51
52
BATT
THERM
38
4.7k
R323
53
54
VCC
BTEMP
55
56
LAMP
CHARGE
57
AFAMP
59
58
NAR
COM0
SEG12
66
C206
1k
5.0V AVR
470p
SEG30
SEG31
36
35
SEG30
SEG31
SEG28
SEG29
34
33
SEG28
SEG29
SEG27
SEG26
32
31
SEG26
SEG27
SEG24
SEG25
30
29
SEG24
SEG25
SEG22
SEG23
28
SEG23
SEG21
27
SEG22
SEG20
26
SEG20
SEG21
SEG18
SEG19
25
24
SEG19
SEG17
22
23
SEG18
SEG16
SEG17
SEG14
SEG16
SEG15
21
20
SEG14
SEG15
SEG12
SEG13
19
18
SEG12
SEG13
SEG10
SEG9
SEG11
17
SEG11
16
15
SEG9
SEG10
SEG7
SEG5
SEG8
14
13
SEG8
SEG7
12
SEG6
SEG6
SEG3
SEG4
SEG5
11
10
9
SEG3
SEG4
SEG1
SEG2
8
COM3
SEG0
SEG1
SEG2
7
6
COM1
COM0
COM2
COM3
5
4
COM2
3
2
COM1
SEG0
60
COM1
30
SEG13
COM3
65
R161
SI
R238
0.1u
5C SW
LAMP
5MS SW
SEG15
SEG16
SEG18
C205
5
SEG14
64
SEG16
6
0.01u
R227
100
0
C332
0.1u
C335
0.1u
0.1u
DVCC
C197
C200
0.01u
0
R343
63
470p
SCK
IC15
AT25160N10SI27
68
2
470
SP
COM2
C336
62
REM
5MV
T:4.95V
R:0V
C220
C510
J4
61
SEG17
0.01u
CN1
J3
COM3
0.01u
C209
1
MIC
D40
1
0.047u
C210
C236
0.01u
CP31
3.9k
47k
1u
R185
GND
R164
GND
COM2
R181
470
VOLOUT
WIDE/NARROW
CHANGEOVER SW
C235
5
4
100k
C202
100k
C230
3
R155
C226
0.1u
4
82p
4.7k
ENCB
VOLIN
6
0.01u
5
3
R152
6
GND
1200p
R156
T:4.95V
R:0V
8
V+
270p
W/N
ENCA
Q47
RN1701
R159
C339
C211
C196
Q27
2SK1830
MAX DEV
COM1
1
R273
VR5
50k
1.2k
10k
COM0
470k
C208
1u
2.2k
0
R163
7
C198
4.7k
HOLD
WP
GND
BATT
2
R154
1k
SO
4
R342
5T
+B
0
0
C201
R153
470
7
3
R283
R282
8
VCC
2
TONE
DTMF/BEEP
REM
VOXIN
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
C316
EEPROM
LAMP
5MS SW
4.7k
100k
CS
RXLED
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
VCO FREQUENCY CONTROL
1
TEMP
SMV
SQV
TONE
DTMF/BEEP
REM
VOXIN
R330
R151
100k
R137
5.6k
4.7u6.3
ROTARY
ENCODER
&
VOL KNOB
4.7k
TH3
MOD
R148
R147
RXLED
470p
470p
IC16
NJM2904V
VOLIN
5MS
ENCB
ENCA
NAR
R144
5T
C291
MIC AMP
-t
C193
C290
DCS BAL
VR6
50k
27k
4.7k
0.027u
10k
TH2
100k
4.7k
R139
-t
1k
R143
TX/BUSY
LED SW
R146
R145
R142
0.027u
1k
120k
C204
820k
R166
R141
R140
C195
QT/DQT
5M
0.1u
47k
180k
0.012u
10u10
C349
R324
R168
180k
C212
2200p
GND
R167
4
3
2
1
CTCSS/DCS FILTER
0.033u
5
6
7
8
V+
IC17
NJM2904V
5M
MOD
VOLIN
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
R237
T:3.29V
R:110mV
T:73mV
R:3.39V
330k
820k
BUSY LED
COM0
R165
B30-2156-05
D41
R226
R158
470p
T0
39k
(D)
R171
TX LED
220
R157
C331
5MS
56k
(D)
330k
120p
C203
0.01u
C351
T:0V
R:4.90V
4.7u6.3
C213
2.02V
ENCA
ENCB
LCD (B38-0881-05)
C354
R170
10k
R172
ENCA
ENCB
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
470p
C355
NAR
TO
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
TEMP
FINAL
AFM
KAPC
DATA
CLOCK
SHIFT
PLLLD
PLLEN
SMV
SQV
MOD
VOLIN
1u
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
ENCA
ENCB
SIGIN
C299
5MS
5T
+B
NAR
TO
QT/DQT
5R
5C
5MV
ENCA
ENCB
SIGIN
MOD
VOLIN
470p
5MS
MOD
VOLIN
100k
MOD
VOLIN
C298
MOD
VOLIN
R240
MOD
VOLIN
5R
5R
BPF/APC
Note : The components marked with a
dot ( ● ) are parts of layer1.
9.70Vrms
-53.00dBm
ANT
ANT FILTER
BPF
0.83Vrms
MIC AMP
IC16
Receiver Section
MIC
AF(1kHz)
Transmitter Section
-20.00dBm
-60.50dBm
Q17
Q10
-36.33dBm
BPF
11.50dBm
Q11
-40.33dBm
Q24
14.00dBm
Q12
27.50dBm
ANT FILTER
ANT
50Ω
0.28Vrms
8.23mVrms
AMP
IC6
0.66Vrms
SP
0.58Vrms
All voltage levels must be measured after setting the AF output voltage at 0.58V rms.
The RF and IF sections are measured by using a spectrum analyzer.
Each voltage of the AF section is measured by using an AF VTVM or
osciloscope.
The level for each point is measured without removing parts or cutting
the pattern.
-21.00dBm
FM IC
IC3
AF(1kHz)
All voltage levels must be measured at High power transmission.
The RF and IF sections are measured by using a spectrum analyzer.
After setting the standard (1 kHz, 3 kHz Dev.) deviation, each voltage
of the AF section is measured by using an AF VTVM or osciloscope.
The level for each point is measured without removing parts or cutting
the pattern.
26.33dBm
IF(38.85MHz)
14.17dBm
-4.00dBm
5.67dBm
Q16
vco
7.33dBm
-42.33dBm -41.17dBm
RF(435.05MHz)
vco
Q9
RF(435.05MHz)
TH-K4AT/K4E
LEVEL DIAGRAM
55
TH-K4AT/K4E
BLOCK DIAGRAM
VR6
TONE
DTMF/BEEP
VR5
D6
1SV278
IC16
NJM2904V
IC5
NJM2107F
MOD
LIMITTER AMP
SPLATTER
FILTER
HPF
Q1
2SK508NV
(52K)
OSC
5C
5T
D1,2,3,4
HVC376B
5MV
Q29,D22,D27
2SC4919
1SS361
RB706F-40
MIC AGC
D74,D79
DA221
LIMITTER
J3
Q30
2SC4617(R)
Q27
2SK1830
Q6
2SC5488
VOX AMP
WIDE/NARR
SW
RF AMP
Q3
2SK1830
D24
MA742
PTTE/RXD
5MV
MICM
NAR
SHIFT SW
VOX DET
LOOP
FILTER
LPF
SHIFT
D42,43,46
D44,47
B30-2205-05
IC1
LMX2316TMX
2nd Local
PLL IC
KEY ILLMI
TCXO
Q23
KTC4082
5MS
X1
12.8MHz
KIN0~3
TRIPLER
Q50
2SK1830
VR1
KEY ILLMI
SW
5C
PLLEN
PLLLD
CLOCK
DATA
KYO0~3
5R
VR6
X57-675
B/3
VOXIN
TONE
NAR
SIGIN
VSS,DVSS,
AVSS,AVRL
Q52
RN1107
PTT
PTTI
KIN4
BSFT
D48,49
B30-2205-05
BEAT SHIFT
Q51
RN4902
IC8
LAMP
LAMP
LCD ILLMI
LCD ILLMI
SW
MPU
KYO1
KYO2
X0
X1
MONI
X57-675
SEG0~31
COM0~3
C/3
BTEMP
CLOCK
DATA
EEPCS
EEPDI
LCD
D/A
DTMF/BEEP,TONE
PWM
BPF/APC
A/D
REM,SQ,SM,BATT
X57-675
56
A/3
H/L
AFM,SPM,MICM,
KAPC,FINAL,CHARGE,
AFAMP,RXLED,BTDET,TXD
5MS,5R,5T,5C(SAVE),VOX,
KYO0~3,VUKEY
H/L
RXD,PTTE,PTTI,
ENCA,ENCB,
PWRSW,KIN0~4,TYPE
IC15
AT25160N
10SI27
EEPROM
INTUP
INTDW
IC10
S-80844
CNNBB85
INT
DCDET
VCC,DVCC
AVCC,AVRH
RESET HST(VCC),V3
IC11
S-80930
CNNBG80
RESET
5C
D40,41
B30-2156-05
B30-2157-05
TX/RX LED
5M
Q47
RN1701
5T
TX/BUSY
LED SW
RXLED
TH-K4AT/K4E
BLOCK DIAGRAM
B
LPF
Q2
2SC5488
Q5
2SC5488
D8, D9
HSC277
Q9
2SC5488
Q10
2SC4926YD
Q11
2SK2596
Q12
2SK3476
D10,11
HVC131
RF AMP
RF AMP
TX/RX SW
RF AMP
PRE-DRIVE
AMP
DRIVE AMP
FINAL AMP
ANT SW
5C
5R
ANT
5T
Q4,D7
TH1
B57331V
2103J
LIPPLE
FILTER
D12,D13
HVC131
Q14
RN4902
Q15
2SC4617(R)
Q58
2SK1830
APC SW
APC KILL SW
SW
ANT SW
BIAS SW
TEMP DET
FINAL
Q13
2SK1830
CF1 450kHz
5C
5T
D17
HSM88AS
IC2
NJM2904V
SW
D14
RB521S-30
APC AMP
ANT SW
5R
BPF/APC
APC V
Q16
3SK318
MIXER
XF1
MCF
IC3
TA31136FN
38.4MHz
FM IC
Q24
2SC5488
D18,D19
1SV305
Q17
3SK318
D20,D21
1SV305
IF AMP
BPF
RF AMP
BPF
BPF/APC
5R
BPF/APC
38.85MHz
5R
5R
5R
SQ,SM
Q22
RN2105
LPF
CD1
DE-EMPH
WIDE/NARR
SW
Q21
2SC4617
(R)
AF FILTER
Q20
2SK1830
VR
IC6
TA7368F
AF AMP
AF MUTE SW
J4
Q56
CPH3417
D26
1SS388
SP MUTE SW
REM
/TXD
DTMF/BEEP
IC17
NJM2904V
5R
CT/DCS
FILTER
AF AVR
AFM
SPM
Q31
2SK1830
D25
MA2S111
MUTE SW
CN2
5R
Q36
2SJ347
THERM DET
VR1
ENC
T
Q41
RN2105
BTDET
5MS 5MS SW
+
D35
RB521S-30
BATT TERMINAL
7.5V Norminal
(6.0 - 9.0V)
PROTECT
IC1
TCXO
Q4,5,6
D40,41
Q57
RN2105
5C
5C SW
IC9
5M TK11250
CM
AVR
5.0V
Q35
2SK1830
Q33
2SB1184
(Q,R)
BATT
CHARGE
DC-IN DET
D30
RB521S-30
D33
RB051L-40
PROTECT
PROTECT
B
IC5
Q30
IC3,17
D9,14
Q16,17
Q22,23,24
Q53
5MV RN2701
5R SW
5MV SW
5R
IC12
TK11250
CUCB
IC6
D48,49
D42,43,46
D47,44
AVR
5.0V
Q37, Q38
2SB1184(Q,R)
2SC4617(R)
AF/LAMP
AVR
Q34
2SK1830
D32
RB051L-40
CHARGE
B
CHARGE SW
PROTECT
AF AMP
Q9,10,13
D8,10
TH1
IC16
Q47
Q55
CPH3317
5T
5T SW
D36
RB521S-30
PROTECT
IC4
XC6202PB
52FR
AVR
11.5V
DC IN
13.8V Norminal
(12.0 - 16.0V)
J2
D81
RB521S-30
PROTECT
B
57
TH-K4AT/K4E
BC-21 (WALL CHARGER) / PB-43N (Ni-MH BATTERY PACK)
BC-21 External View
PB-43N External View
Photo is K type.
BC-21 Specifications
Rated output voltage ......... DC 13.8V ±5%
Rated output current ......... 150mA
Charging time .................... Approx. 12 hours (PB-43N)
PB-43N Schematic diagram
Discharge terminal side
T
Thermister
(DTN-103F3H-SYS)
Breaker
(BBS70 A1N-01 70˚C)
Breaker
(BBS80A2Y-01 80˚C)
(4N)
Diode
(ERB83-004)
(2N)
Thermister
(DTN-103F3H-SYS)
T
Rear charge terminal side
PB-43N Specifications
Voltage .......................................... 7.2V (1.2V x 6)
Charging current ............................ 1100mAh
Dimensions (Projections included) ... 58W x 100.8H x 16.8D (mm)
Charger and charging time
KSC-24 (Rapid charger) ............. Approx. 60 minutes
Weight ........................................... 210g
58
TH-K4AT/K4E
BT-14 (BATTERY CASE) / PG-4Y (PROGRAMMING INTERFACE CABLE) /
MCP-1A (MEMORY CONTROL PROGRAM)
BT-14 (6 AA/LR6)
External View
PG-4Y
External View
MCP-1A
• Available free for downloading from the Kenwood website:
http://www.kenwood.com/i/products/info/amateur.html
59
TH-K4AT/K4E
SPECIFICATIONS
General
Market code
Number of memory channels
Antenna impedance (Connector type)
Operating Voltage
DC IN Jack
Battery terminal
Grounding method
Current
TH-K4AT
TH-K4E
M2
E
100 (50) + 8 special function memories
50 Ω (SMA)
DC 12.0 ~ 16.0 V (13.8 V nominal)
DC 6.0 ~ 9.0 V (7.2 V nominal)
Negative ground
Transmit with H, 13.8 V (DC IN)
1.8 A or less
Transmit with H, 7.2 V (PB-43N)
2.0 A or less
Transmit with M, 7.2 V (PB-43N)
1.5 A or less
Transmit with L, 7.2 V (PB-43N)
0.8 A or less
Receive (no signal)
100 mA or less
Battery Saver ON (Average)
30 mA or less
Usable temperature range
–20° C ~ 60° C (–4° F ~ 140° F)
–10° C ~ 60° C (+14° F ~ 140° F) with PB-43N
Frequency stability
Within ±5 ppm (–20° C ~ 60° C)
Dimensions (W x H x D Projections not included)
58 x 110 x 28.4 mm / 2 7/16" x 4 6/16" x 1 2/16" with PB-43N
58 x 110 x 29.6 mm / 2 7/16" x 4 6/16" x 1 5/32" with BT-14
weight
Approx. 320 g / 11.3 oz with PB-43N
Approx. 320 g / 11.3 oz with BT-14
Transmitter
Transmission Mode
F3E (FM) / F2D (FM)
Frequency range
400 ~ 470 MHz
Output Power
430 ~ 440 MHz
DC-IN jack (13.8 V)
H: 5.0 W (approx.)
M: 1.5 W (approx.)
L: 0.5 W (approx.)
PB-43N (7.2 V)
H: 5.0 W (approx.)
M: 1.5 W (approx.)
L: 0.5 W (approx.)
BT-14 (9.0 V)
H: 3.5 W (approx.)
M: 1.2 W (approx.)
L: 0.3 W (approx.)
Modulation
Reactance
Maximum frequency deviation
±5 kHz (FM) / ±2.5 kHz (NFM)
Squrious emissions
–60 dB or less (H and M power), –50 dB or less (L power)
Microphone impedance
2 kΩ
Receiver
Reception Mode
F3E (FM) / F2D (FM)
Frequency range
400 ~ 470 MHz
Intermediate Frequency (IF)
1st IF : 38.85 MHz
2nd IF : 450kHz
430 ~ 440 MHz
Circuit type
Double super - heterodyne
Sensitivity
FM (12 dB SINAD)
70 cm amateur radio band: 0.18 µV or less
Squelch Sensitivity
0.13 µV or less (within 70 cm amateur radio band)
Selectivity
–6 dB / 10 kHz or less
–40 dB / 28 kHz or less (within 70 cm amateur radio band)
Audio output (10% distortion)
400 mW or higher (7.2 V, 8 Ω load)
Note: All specifications (General, Transmitter and Receiver) are guaranteed within the amateur radio band.
KENWOOD CORPORATION
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo 192-8525, Japan
KENWOOD U.S.A. CORPORATION
KENWOOD ELECTRONICS ITALIA S.p.A.
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745,
U.S.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD ELECTRONICS CANADA INC.
Bolivia, 239-08020 Barcelona, Spain
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
KENWOOD IBERICA S.A.
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
Rembrücker Str. 15, 63150 Heusenstamm, Germany
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS BELGIUM N.V.
KENWOOD ELECTRONICS (HONG KONG) LTD.
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road,
Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.
KENWOOD ELECTRONICS U.K. LIMITED
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands