Download SERVICE MANUAL - MS

 SERVICE MANUAL MJ-327
VHF FM TRANSCEIVERS
SPECIFICATIONS
GENERAL
Frequencyy Range
136--174MHz
Workingg Temperate
－20℃~＋55℃
Operating Voltage
DC 7.2V
Current Consumption
≤1.6A(transmit 4W)
Sensitivity Adjust
220mV
Antenna impedance
50Ω
TRANSMITTER
Frequency Stability
±5ppm
Output Power
4W(High),2W(Low)
Maxx Frequency Deviation
≤　5KHz
Audio Distortion
≤３%
Adjacent Channel Power
≥-65dB
Occupied Bandwidth
≤16KHz
RF Sensitivity :
≤2μV
Audio Output
≥0.5W
Audio Distortion
≤10%
All stated specifications are subject to change without notice or obligation.
2
CIRCUIT DESCRIPTION
1. Frequency configuration
The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is
450kHz. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in
the transmitter generates the ecessary frequencies. Fig. 1 shows the frequencies.
2. Receiver
The freauency configuration of the receiver is shown in Fig.2.
1) Front - end RF amplifier
An incoming signal from the antenna is applied to an RF amplifier (T226) after passing
through a transmit/receive switch circuit (D154 ,D211,D212) and a 3-pole LC
filter(L214,C215).After the signal is amplified (T226), the signal is filtered by a band pass
filter (a 3-pole LC filter) (L230,C230,L235,L235) to eliminate unwanted signals before
it is passed to the first mixer. The voltage of these diodes are controlled by to track
the MPU(U811) center frequency of the band pass filter. (See Fig. 2)
3
2) First Mixer
The signal from the RF amplifier is heterodyned with the first local oscillator signal from
the PLL frequency synthesizer circuit at the first mixer (T248) to create a 38.85MHz first
intermediate frequency (1st IF) signal. The first IF signal is then fed through crystal filters
(FL254,FL255) to further remove spurious signals.
3) IF amplifier
The first IF signal is amplified by T255, and then enters U261 (FM processing IC). The
signal is heterodyned again with a second local oscillator signal within U261 to create a
450kHz second IF signal. The second IF signal is then fed through a 450kHz ceramic filter
(FL263) to further eliminate unwanted signals before it is amplified and FM detected in
FL240.
4) AF amplifier
The recovered AF signal obtained from U261 goes to the microprocessor(U811). The
processed AF signal passes through an AF volume control and is amplified to a sufficient
level to drive a loud speaker by an AF power amplifier (U481).
5) Squelch
Part of the AF signal from the IC enters the FM IC again,and the noise component is
amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding
to the noise level. The DC signal from the FM IC goes to the analog port of the
microprocessor (U811). U811 determines whether to output sounds from the speaker by
checking whether the input voltage is higher or lower than the preset value.To output
sounds from the speaker, U811 sends a high signal to the AF Power Iines and turns U481
on through T471,T472.
6) Receive signaling
QT/DQT
The output signal from FM IC (U261) enters the microprocessor(U811) .U811 determines
whether the QT or DQT matches the preset value, and controls the AF Power and the
speaker output sounds according to the squelch results
3. PLL frequency synthesizer
The PLL circuit generates the first local oscillator signal for reception and the RF signal for
transmission.
1) PLL
The frequency step of the PLL circuit is 5 and 6.25kHz and so on. A 19.2MHz reference
oscillator signal is divided at U311 by a fixed counter to produce the 5 or 6.25kHz
reference frequency. The voltage controlled oscillator (VCO) output signal is buffer
amplified by T340, then divided in U311 by a programmable counter . The divided signal is
compared in phase with the 5 or 6.25kHz reference signal in the phase comparator in
U311. The output signal from the phase comparator is filtrered through a low-pass filter
and passed to the VCO to control the oscillator frequency.
2) VCO
The operating frequency is generated by T340 in transmit mode and T341 in receive
mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained
from the phase comparator, to the varactor diodes (D330 and D331 in transmit mode and
D340 and D341 in receive mode). The TC/RC pin is set low in receive mode causing T3 45
off, and turn T337 on . The TC/RC pin is set hight in transmit mode causing T337 off,and
T192,T191 on.
4
3) UNLOCK DETECTOR
FB617
If a pulse signal appears at the LD pin of U311, an unlock condition occurs, and the DC
voltage obtained from D309, and C311 causes the voltage applied to the PLL-LD pin of
the microprocessor to go low. When the microprocessor detects this condition, the
transmitter is disabled, ignoring the push-totalk switch input signal. ( See Fig.3)
4. Transmitter
1)Microphone Amplifier
The signal from the microphone passes through U511.The signal passes through the Audio
processor(U511) for the maximum deviation adjustment,and goes to the VCO modulation
input.
2)Drive and Final Amplifier
The signal from the T/R switch(D154 and D155) is amplified by the pre-drive(T112.T120)
and drive amplifier(T133) to 50mW.The output of the drive amplifier is amplified by the
RF power amplifier(T145) to3.0W(1W when the power is low).the RF power amplifier
consists of two MOS FET stages.The output of the RF power amplifier consists of two
MOS FET stages.The output of the RF power amplifier is then passed through the harmonic
filter (LPF) and antenna switch (D154,D155)and applied to the antenna terminal.
5. Power supply
There are four 5V power supplies for the microprocessor: 5M,5C,5R,and 5T,5M for
microprocessor is always output while the power is on.5M for microprocessor is always
output while the power is on.5M is always output,but turns off when the power is turned off
to prevent malfunction of the microprocessor.
5C is a common 5V and is output when SAVE is not set to OFF.
5R is 5V for reception and output during reception.
5T is 5V for transmission and output during transmission.
6.Control Circuit
The control circuit consists of a microprocessor (U811) and its peripheral circuits.it
controls the TX-RX unit.U811 mainly performs the following:
(1) Switching between transmission and reception by the PTT signal input.
(2) Reading system,group,frequency,and program data from the memory circuit.
(3) Sending frequency program data to the PLL.
(4) Controlling squelch on/off by the DC voltage from the squelch circuit.
(5) Controlling the audio mute circuit by the decode data input.
(6) Transmitting tone and encode data.
5
1)Memory Circuit
Memory circuit consists of the CPU (U811) and an EEPROM(U831).An EEPROM has a
capacity of 32K bits that contains the transceiver control program for the CPU and data
such as Transceiver channels and operation features
2)Low Battery Warning
The battery voltage is checked using by the microprocessor.
(1) The red LED blinks when the battery voltage falls below 6.2V.
(2) A Warning tone generates when the red LED blinking. ( See Fig.4)
6
ADJUSTMENT
Required Test Equipment
The following items are required to adjust radio parameters:
1. Regulated power supply
Supply voltage: 5-14V DC
Current: 3A or more
2. Digital multimeter
Voltage range: FS = Approx. 20V
Current: 10A or more
Input resistance: High impedance
3. Oscilloscope
Measurable frequency: Audio frequency
4. Audio dummy load
Impedance: 8 ohm
Dissipation: 1W or more
Jack: 3.5mm
5. SSG
Output frequency: 200MHz or more
Output level: -20dBu/0.1uV -120dBu/1V
Modulation: FM
6. Spectrum Analyzer
Measuring range: Up to 2GHz or more
7. Power meter
Measurable frequency: Up to 200MHz
Impedance: 50, unbalanced
Measuring range: 0.1W -10W
8. Audio volmeter
Measurable frequency: Up to 100KHz
Sensitivity: 1mV to 10V
9. Audio generator
Output frequency: 67Hz to 10KHz
7
Output impedance: 600, unbalanced
10.Distortion meter/SINAD meter
Measurable frequency: 1kHz
Input level: Up to 40dB
Distortion: 1% - 100%
11.Frequency counter
Measurable frequency: Up to 200MHz
Measurable stability: Approx. +/-0.1ppm
12.Linear detector
Measurable frequency: Up to 200MHz
Characteristics: Flat
CN: 60dB or more
Note
Standard modulation: 1kHz +/-2.5kHz/DEV
Reference sensitivity: 12dB SINAD
Specified audio output leve: 200mW at 8
8
100P
0402
Capacitance
C192. C421. C423. C424. C425. C426.
C427. C428. C429. C430. C432
11
102P
0402
Capacitance
C181. C304. C377. C389. C407. C731.
C830. C902
8
16
103P
0402
Capacitance
C201. C261. C302. C414. C451. C549.
C549. C654. C659. C668. C673. C827.
C841. C842. C911. C913
104P
0402
Capacitance
C388. C402. C422. C441. C444. C535.
C540. C542. C650. C656. C663
11
105P
10P
120P
150P
220P
223P
273P
332P
33P
0402
0402
0402
0402
0402
0402
0402
0402
0402
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
C375. C524
C434
C528. C539
C541
C612. C712. C858
C406. C431. C529
C371. C372
C442. C448. C862
C537
2
1
2
1
3
3
2
3
1
470P
0402
Capacitance
p
C185. C195. C374. C403. C411. C420.
C438 C453
C438.
C453. C532
C532. C533
C533. C665
C665. C912
12
472P
473P
47P
563P
680P
820P
9P
105P
0R
100K
100R
0402
0402
0402
0402
0402
0402
0402
0805
0402
0402
0402
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Resistor
Resistor
Resistor
C671. C672. C674
C404. C445
C538
C526
C443
C447
C257
C857
R532
R403. R525. R540. R545. R661
R283. R304. R438. R713. R843. R844
3
2
1
1
1
1
1
1
1
5
6
10K
0402
Resistor
R181. R376. R444. R449. R535. R648.
R654. R658. R660. R827. R909. R910
12
10R
120K
12K
150KD
180K
18K
0402
0402
0402
0402
0402
0402
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
R450
R374. R379
R527
R192. R194. R195. R196. R197. R198
R832
R404
1
2
1
6
1
1
1K
0402
Resistor
R526. R652. R669. R712. R869. R900.
R901
7
1K5
1K8
0402
0402
Resistor
Resistor
R432. R436
R867
2
1
1M
1M8
200K
220K
22K
27K
2K
2K2
30K
33K
36K
390K
39K
3K3
3K9
470R
47K
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
R182. R537. R662
R443. R447
R831
R539
R405. R674
R866
R542
R715. R716
R185. R431. R529. R861
R378. R434. R441. R442. R446. R448
R183. R857
R546
R377. R387
R437. R451. R657
R653
R262
R301. R549. R833. R841. R842
3
2
1
1
2
1
1
2
4
6
2
1
2
3
1
1
5
4K7
0402
Resistor
R302. R371. R372. R655. R656. R671.
R673
7
51K
560R
5K6
680K
6K8
820R
82K
0R39
3K3
1UF
2U2F
4U7F
10UF
10UF
101T
GREEN
RED
1SS372
DAN222
2SK1824
DTA114EE
DTC114EE
MRF497
2SB624
24C32
CHORD
LM358
0402
0402
0402
0402
0402
0402
0402
1206
1206
0805
0805
0805
A
B
0402
0603
0603
USM
USM
ESM
ESM
ESM
USM
TSM
SO8
SO8
SO8
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Pol-Cap
Pol-Cap
Pol-Cap
Pol-Cap
Pol-Cap
Ind
G-LED
R-LED
Diode
Diode
Transistor
Transistor
Transistor
Transistor
Transistor
IC
IC
IC
R388
R813. R814
R541
R406
R433
R421. R548
R528
R171. R172. R173
L164
E854
E421
E181. E377. E431. C379
E283. E913
E911
L402. L711
D813
D814
D422
D421
T431. T526
T201
T181
T421
T301
U821
U511
U661
1
2
1
1
1
2
1
3
1
1
1
4
2
1
2
1
1
1
1
2
1
1
1
1
1
1
1
LM4558
LM2904V
FX128
5A
3M58HZ
50K
MONI
PTT
SCR
JP18
1
1
1
1
1
2
1
1
1
1
SO8
SSOP8
SSOP16
SOT89
FX-CS20
IC
IC
IC
IC
Oscillator
Var-Res
Button
Button
Button
Connectors
U411
U161
U512
U911
CR537
RV351. RV378
SW711
SW712
SW713
JP811
Footprint
0402
Name
Capacitance
Designators
C247. C336. C352
Capacitance
8
0402
C275. C313. C314. C315. C317. C343.
C384. C643
Capacitance
13
0402
C128. C137. C191. C205. C232. C248.
C256. C281. C312. C316. C318. C328.
C418
Capacitance
20
0402
C113. C143. C146. C186. C219. C231.
C250. C251. C254. C258. C280. C321.
C354. C382. C383. C391. C413. C645.
C854. C885
Capacitance
22
105P
10P
0402
0402
0402
C103. C145. C188. C264. C273. C274.
C278. C282. C283. C284. C319. C326.
C395. C416. C417. C602. C604. C642.
C850. C851. C855. R644
Capacitance
Capacitance
C138
C333. C351. C355. C359. R357. VC241
1
6
12P
0402
Capacitance
C154. C155. C161. C214. C240. C335.
C358
7
15P
18P
1P
1P5
20P
220P
222P
223P
22P
25P
27P
330P
33P
3P
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
C115. C166. C811. C882
C211
C332. C349
C334. VC220
C123. C125
C286. C387. C853
C871
C345
C167. C168. C393
C212
C276. C287
C381. C385
C133. C272. C346
C238. C246. C255
4
1
2
2
2
3
1
1
3
1
2
2
3
3
Bottom
Comment
0P5
100P
102P
103P
104P
Quantity
3
470P
0402
Capacitance
C104. C111. C112. C114. C121. C122.
C127. C131. C134. C157. C206. C218.
C233. C285. C288. C320. C323. C324.
C325. C327. C342. C394. C396. C398.
C419. C452. C601. C886. C904
472P
474P
47P
56P
5P
683P
6P
8P
9P
104P
105P
10P
13P
470P
47P
6P
104
104P
47P
6P
4P
0R
0402
0402
0402
0402
0402
0402
0402
0402
0402
0603
0603
0603
0603
0603
0603
0603
0805
0805
0805
1008
0402
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Capacitance
Resistor
C872
C646
C329. C380. C852
C386
C348. C397
C640
C135. C136. C169. C392
C217
VC243
L333
C883. C901
C163. C164
C165
C162. L133
C156
C151
C81
C817
C152
C331
C347
R363. R364. R400. R886
1
1
3
1
2
1
4
1
1
1
2
2
1
2
1
1
1
1
1
1
4
100K
0402
Resistor
R226. R229. R240. R258. R322. R342.
R355. R883. R885
9
100R
0402
Resistor
R321. R326. R391. R397. R714
5
10K
0402
Resistor
R189. R256. R278. R361. R380. R382.
R416. R601. R718. R907. R908
11
10R
120K
150K
150R
15K
180K
0402
0402
0402
0402
0402
0402
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
R124. R393. C644
R113. R187. R261. R392
R128. R186
R362. R642
R111. R328
R257. R286
3
4
2
2
2
2
1K
0402
Resistor
R242. R264. R341. R365. R902. R903.
R904. R905. R906
9
1K2
1K5
1K8
1M
200K
0402
0402
0402
0402
0402
Resistor
Resistor
Resistor
Resistor
Resistor
R276
R115
R402
R417. R856
R227. R230
1
1
1
2
2
29
220K
220R
22K
22R
270K
270R
2K2
330K
330R
33K
33R
39K
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
R184
R228. R239. R335. R351. R389
R333
R114. R121. R136. R343
R285
R157. R158
R366. R367. R613. C641
R852
R122. C124
R854. R871
R231
R137
1
5
1
4
1
2
4
1
2
2
1
1
3K3
0402
Resistor
R123. R277. R288. R394. R396. R398.
R399. R873
8
3K9
470K
470R
47K
47R
4K7
560R
56K
5K6
680K
0R
47R
4K7
0R
0U1F
1UF
2U2F
4U7F
1UF
10UF
100NH
220NH
390NH
470NH
560NH
220NHD
6U8H
101T
101T
68NH
R10
R12
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0603
0603
0603
0805
0805
0805
0805
0805
A
A
0603
0603
0603
0603
0603
0805
0603
0603
0805
0805
0805
0805
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Pol-Cap
Pol-Cap
Pol-Cap
Pol-Cap
Pol-Cap
Pol-Cap
Ind
Ind
Ind
Ind
Ind
Ind
Ind
Ind
Ind
Ind
Ind
Ind
R287
R646. R853
R254. R356. R401. C132
R102. R127. R138. R188. R323
R126. R252. R312
R101. R324. R815. R818
R368
R238
R395. R872
R381
L335. R645
R125
L329. L346
R135. R153. L253
E364. E367
E319. E646
E363
E312. E325. E401
E871
E642
L112. L122. L312. L320. L324. L386
L231. L351. L355. L391. L392
L123
L381. L383
L382
L157
L328. L345
L851. L886
L132. L142. L901
L212. L213. L224. L227. L288
L344. L347
L216. L326. L331
1
2
4
5
3
4
1
1
2
1
2
1
2
3
2
2
1
3
1
1
6
5
1
2
1
1
2
2
3
5
2
3
2R2
3T
4T
5T
6T
6T
8T
HSC277
MA2S111
1SS314
1SV220
B9
MA742
2SC4617
2SJ243
DTA114EE
DTC114EE
2SC4226
2SC5108(Y)
KTC4082
R25
UMC4
2SB624
2SK508NV
R3111N451
2SC4988
2SK1588
2SK3078
3SK1212
3SK4037
MCU
TA7368F
TA31136F
LMX2332
14M4HZ
32K768
450K
BAT
0805
0.4*1.5mm
0.31*1.3mm
0.4*1.5mm
0.31*1.5mm
0.4*1.5mm
0.4*1.5mm
ESC
ESC
USC
USC
USC
USM
ESM
ESM
ESM
ESM
USM
USM
USM
USM
USV
TSM
TSM
TSV
SOT89
SOT89
SOT89
SOT343
HWSON-2
QFP44
SSOP10
SSOP16
SSOP20
Ind
Coil-Ind
Coil-Ind
Coil-Ind
Coil-Ind
Coil-Ind
Coil-Ind
Diode
Diode
Diode
Diode
Diode
Diode
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
IC
IC
IC
IC
Oscillator
Oscillator
Filters
Battery
L252
L165
L131
L161. L163
L211
L162
L143
D111. D211. D212. D213
D324. D325
D156
D332
D328. D329. D345. D346
D411
T321
T326
T275. T401. T815
T102. T191. T611. T646. T813. T814
T111. T355
T391
T261. T381
T392
T327
T103. T602
T333. T341
T881
T121
T645
T131
T231. T251
T141
U811
U641
U261
U311
CR311
CR881
FL261
BAT111
1
1
1
2
1
1
1
4
2
1
1
4
1
1
1
3
6
2
1
2
1
1
2
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
EXPLODED VIEW
14
1
17
16
18
20
23
19
15
21
6
7
8
12
5
9
A
A
10
B
11
B
B
B
C
C
C
C
C
C
C
C
24
4
22
2
13
3
ANT
P84
1
CLK
104P
10K
100K
104P
1
10
2
9
3
TA7368F 8
4
7
5
6
103P
1M8
6K8
2
1K5
103P
3
103P
4K7
5
4
4558(2)
4U7F
30K
3K3
18K
100K 470P
820R
104P
22K
102P
680P
10K
680K
3
5T
MIC JACK
7
1
4558(1)
332P
820P
10K
X
103P
104P
6
1SS372(N9)
2SC4181(L17)
33K
104P 101T(磁珠)
473P
223P
223P
2U2F
33K
1K5
473P
8
2SC4617(BR)
2SC4617(BR)
332P
3K3
470P
10P
102P
102P
104P
1M8
472P
X
22K
33K
1K8
10UF
5T
33K
MIC
5V
33K
470P
105P
82K
4U7F
1K
100R
100K
P73
100R
102P
PTT 10K
5V
P74
X
5V
X
15K
6K8
5V
P75
VOX
X
8
5V
270K
10K 10K 103P
6
4
5
MA742
47K
100R
X
1K
2SC4738
47K
0R
100R
SW-CH
104P
103P 103P
N/W
PB7
P66
1K
MA2S11
X
7
24C32
3
470P
2
C452
470P
100R
in
T881
104P
R3111N451C-TR-FA
DTC114EE(24)
1K2
273P
4K7
105P
5K6
5V
1
Gnd
X
273P
4K7
100K
R883
104P
PC2
QT/DQT
4
P90
44
3
PB7
TONE
17
2
PB6
1
PB5
RXI
16
220P
12
19
32
AVD D
AVSS
X IN
/R E S E T
26
27
XO U T
VDD
18
28
33
0R
0R
14
15
VSS
13
101T
RXO
0R
104P
5T
2SB624(BV4)
MONI
O
●
<
>
3
A
6
B
1N4148
P91
1
2
VCC
0R
15P
1M
2SB624(BV4)
10UF
103P
103P
1K
5
4
9
7
5C
47K
10UF
2SB624(BV4)
103P
5V
47K
103P
1K
P77
1N4148
P92
5V
103P
1K
150K 10K
P96
1N4148
5V
P95
P93
8
C
1N4148
P94
D
1N4148
*
150K 103P
0
#
5A
VCC
Vin
101T
32K768
5R
47K
10UF 103P
47K 47K 47K 47K 47K
P90
5V
103P
22μF
GND
43
PC2
ALARM
220K
20
PC1
MCU
P64
P67
P66
21
22
23
24
42
MICI
P71
AURX
P64
P63
P62
P91
25
P92
5
41
PC0
104P
DTC114EE(24)
DTC114EE(24)
S30
S31
36
35
P84
6
40
P70
S29
S31
S30
S29
34
S2
7
S1
P70
P83
7
P93
P71
MICO
470R
P82
P94
29
P95
8
30
9
39
31
38
P72
34
P73
35
P96
PLLC
BACK_LIGHT2
PC1
P97
10
5V
LED(G)
P77
P76
LED
11
37
103P
LED
DTC114EE(24)
PC0
BACK_LIGHT1
.....
DTC114EE(24)
.....
LED
36
P74
VCC
6
4
C3
C2
C1
C0
LCD
LED
LED
5V
P75
19
S28
LED(R)
103P
LED
120R
键盘灯
15P
33
35
46
34
18
17
16
15
14
13
S27
470R
3
68K
20
120R
1N4148
1N4148
P67
APC
2
DTC114EE
47K
21
9
C3
5T
150K
22
8
/IRQ 10
104P104P
DTC114EE
7
C2
VDD
C1
VLCD
C0
47K
LCD Driver
12
5V
150K(B)
S26
6
OSCI
S19
S25
5
OSCO
120R
LED
S18
23
VSS
11
220K
/BI
LM2904(2)
47K
BI
100P
10K
470P
X
LED
S17
30
29
S0
3
7
4
S16
31
5
150K(B)
8
5T
1K
472P
4K7
4K7
103P
22K 472P
27K
39K
102P
104P
102P
100P
100P
100P
1K
1K
1K
P97
PB6
三色背光灯
32
DATA 4
1
5
3
1K
2
1
6
LM2904(1)
150K(B)
2
/WR
100P
PB6
1M
/RD
......
......
470P
1K
47
48
1
PB7
.....
103P
100P
30K
104P
P72
TONE
TX-ANI
X
1
4
3
102P
4U7F
47R
20
19
N.U.
out
120R
U8
VCC
3K9
P74
1K
150R
470R
50K
223P
330R
PB7
S15
S14
S13
S2
S1
S0
/CS
100P
0R39
150K(B)
5
220P 220P
10UF
VCC
1K
102P
SP JACK
P76
PB5
10UF
220UF
X
104P
100P
223P
X
10R
150K
102P 47K
0R39
150K(B)
6
SP
VCC
2SK1588(NG)
5K6
150P
P72
DTC114EE(24)
1K5
0R39
150K(B)
104P 150K
8K2
103P
47R
VCC
102P
LM358
7
470K
10UF
5T
100K
C883 D324
39K
2
X
474P
2SB624
8
104P
DTC114EE(24)
9
10
7
6
5
4
3
103P
DTA114YE
R885
47K
100K
470P
BAT
105P
AURX
11
12
13
14
15
16
2
RXI
N/W
P63
102P
5V
2K
50K
102P
18
GDN
Fin2
17
16
15
14
DATA
CLK
STB
13
R25
VT
1
VCC2
2
VP1
VP2
3
CP1
VCC1
CP2
4
5
Fin1
GND
6
7
8
9
10
XOUT
XIN
103P
LMX2332
12
15P
GND
470P
2SC4226(R25)
470P
27P
10K
2K2
2K2
SQ
100P
2
103P
X
10P
2SC3357(RF)
X
6P
X
22R
47R
47P
20P
X
120K
.....
X
6P
5P
47R
2SK3078(UW)
0R
LM358
X
DATA PB6
X
X
1M
392P
2K2 103P
820R
1SR154-400
10K
220K
104P
103P
19M2
5C
VCC
27NH(叠层)
102P
X
10R
470P
11
20P
3K9
5P
0R
5P
330R
FOUT
100nH(叠层)
220NH(叠层)
470P
22R
103P
100K
470P
0.4*1.2*3T
RQA0002
10K
BATT
120P
47P
10K
680K
102P
470R
390NH(磁珠)
101T(磁珠)
104P
103P
470P
100NH(叠层)
470P
4K7
120P
1M
220NH
0μ1F
560R
100K
103P
P83
TONE
82K
333P
223P
30K
473P
223P
12K
103P
3M58
100R
33P
2SC2714(QY)
1K
0μ1F
82P
100NH(磁珠)
FUSE
47UF
10μF
0R
103P
2μ2F
2K2
SW-VOL
10K
5C
15K
100NH(叠层)
10T
1R0J(绕线)
12P
105P
470R
12P
0R
5T
101T(磁珠)
VCC1
104P
VRX
3K3
RX-ANI
TP
100P
4
10K
1
103P
B9
220NH
5C
470P
470P
22K
8
104P
103P
1SV220
470P
104P
100R 100nH
100K
1
VCC
47P
R12(绕线)
2
8
10K
VRX
3
7
103P
R12(绕线)
220R
100R
6
P63
1K
2SK1824(B1)
FX/MX128
TP
2K2
100P
B9
4K7
1P
6μ8H(磁珠)
B9
47P
1P5
6P
10P
0R
R25
X
4K7
0P5
10P
K52
15K
390K
VCC
82P
150R
0R
TX_VCO
1K
82K
222P
100P
220nH(叠层)
120K
220nH(叠层)
470P
6μ8H(磁珠) 10K
B9
27P
R10(绕线)
220R
0P5
HSC277
470P
100K
DC SW
103P
5R
10P
6P
TVCO
2SJ243
4P
X
RVCO
K52
0R
TP
103P
470P
5K6
22P
100R
470P
1K
3K3
3K3
X
UMC4
5R
R25
5P
0R
3K3
4U7F
3K3
220nH(叠层) 10R
4K7
470P
HSC277
5C
DTA114EE
RX_VCO
0P5
100R
5C
MA2S111
470P
101T(磁珠)
220NH(叠层)
470P
270R
2SC4617(BR)
2K7
R10(绕线)
5C1
270R
5T
1K
105P
N.U.
105P
5C
1K
2K
5P
220P
9
10
11
10K
50C24
22R
100K
47K
8
7
6
5
4
3
13
100P
104P
333P
X
4K7
38M850
9P
470P
X
220R
470P
220R
X
9P
X
38M850
15P
103P
4
TP
27P
104P
470R
222P
102P
0P5
3K3
33P
120K
5
CHORD
470P
4K7
X
9P
15
16
R33(绕线) 470R 103P
3SK318(YK-)
102P
AURX
470P
P82
104P
470P
104P
470K
TA31136FN
1K
12
470P
2SC2714(QY)
3P
220nH(叠层)
X
68NH(绕线)
68NH(绕线)
1P5
12P
R12(绕线)
68NH
102P
470P
3SK318(YK-)
HSC277
18P
HSC277
3P
3P
68NH(绕线)
25P
8P
0R
2
1
R56(绕线)
X
X
180K
100K
TP
14
68NH(绕线)
470P
12P X
5V
470K 3K9
27P
104P
103P
15P
22P
X
104P
100R
X
30P
0.31*1.5*6T
HVU131
450K
470P
103P
10UF
100R
22P
8P
470P
100R
104P
100K
10K
56K
200K
100K
33R
100K
0.4*1.5*6T
0.4*1.5*5T
13P
103P
470P
X
0.4*1.5*5T
5R
VHF
1UH
6P
X
5R
14P
5V
Vout
22μF 104P