Download Fostex X-24 User's Manual

Service Manual
Model
X-24
multitracker
CAUTION:
CAUTION
TO PREVENT ELECTRIC SHOCK, MATCH
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WIDE BLADE OF PLUG TO WIDE SOLT,
FULLY INSERT.
ATTENTION:
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
POUR ÉVITER LES CHOCS ÉLECTRIQUES,
DO NOT REMOVE COVER (OR BACK).
INTRODUIRE LA LAME LA PLUS LARGE DE
NO USER-SERVICEABLE PARTS INSIDE.
LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
JUSQU' AU FOND.
The lightening flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product's enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in the literature
accompanying the appliance.
“WARNING”
“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”
SAFETY INSTRUCTIONS
1.
2.
3.
4.
5.
6.
Read instructions - All the safety and operating instructions should be read before the appliance is operated.
Retain instructions - The safety and operating instructions
should be retained for future reference.
Heed warnings - All warnings on the appliance and in the
operating instructions should be adhered to.
Follow instructions - All operating and use instructions
should be followed.
Water and Moisture - The appliance should not be used
near water - for example, near a bathtub, washbowl,
kitchen sink, laundry tub, in a wet basement, or near a
swimming pool, and the like.
Carts and Stands - The appliance should be used only
with a cart or stand that is recommended by the manufacturer.
9.
10.
11.
12.
13.
14.
15.
7.
8.
An appliance and cart combination should be moved with
care. Quick stops, excessive force, and uneven surfaces
may cause the appliance and cart combination to overturn.
Wall or Ceiling Mounting - The appliance should be
mounted to a wall or ceiling only as recommended by the
manufacturer.
Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block
the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the
flow of air through the ventilation openings.
16.
17.
Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.
Grounding or Polarization - The precautions that should
be taken so that the grounding or polarization means of
an appliance is not defeated.
Power Cord Protection - Power supply cords should be
routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.
Cleaning - The appliance should be cleaned only as recommended by the manufacturer.
Nonuse Periods - The power cord of the appliance should
be unplugged from the outlet when left unused for a long
period of time.
Object and Liquid Entry - Care should be taken so that
objects do not fall and liquids are not spilled into the enclosure through openings.
Damage requiring Service - The appliance should be serviced by qualified service personnel when:
A. The power supply cord or the plug has been damaged;
or
B. Objects have fallen, or liquid has been spilled into the
appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or
exhibits a marked changed in performance; or
E. The appliance has been dropped, or the enclosure
damaged.
Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified
service personnel.
X-24
TABLE OF CONTENTS
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . . 7
3. ADJUSTING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . . 14
5. CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 23
NOTES
* Adjusting Procedures, Parts List and circuit diagrams are given in this manual to assist the service technician in
maintaining the Model X-24.
* The following accessories are supplied with X-24 as the standard accessories.
!
Owner's manual
AC adaptor AD-12A
: 8288418000 (for export & domestic model)
: 8270727003 (for USA/CND)
: 8270727006 (for EUR)
: 8270727007 (for UK)
: 8270727010 (for JPN)
* Following is the packing material for the Model X-24.
Carton, inner, X-24
Packing, L, X-24
Packing, R, X-24
: 8228715000
: 8228439001
: 8228439002
CAUTION
!
Parts marked with this sign are safety critical components. They must always be replaced with identical components.
Refer to the Fostex Parts List and ensure exact replacement.
3
X-24
1. SPECIFICATIONS
DEFINITION
Specification Unit
Normal Fader Position
Input fader
Condition
Master fader
Condition
0 dBV = 1 Vrms
At 8 ± 1 position
LINE IN / INSERT: -10 dBV / 1 kHz
Recorder: Input Monitor mode (REC - PAUSE)
Adjust input fader for -10 dBV at TAPE OUT.
PAN: L (R)
At 8 ± 1 position
LINE IN / INSERT: -10 dBV / 1 kHz
Recorder: Input Monitor mode (STOP)
Adjust master fader for -10 dBV at LINE OUT.
PAN: L (R)
MIXER SECTION
Standard Input
MIC IN
Connector
Input level
Impedance
LINE IN / INSERT (RCV)
Connector
Input level
Impedance
Standard Output
TAPE OUT 1 ~ 4
Connector
Output level
Load impedance
LINE OUT L, R
Connector
Output level
Load impedance
INSERT (SEND)
Connector
Output level
Load impedance
Phones Max. Output Level
Level Indication
Frequency Response
MIC IN (Input Level: -50 dBV)
MIC IN (Input Level: -10 dBV)
LINE IN (Input Level: -10 dBV)
S / N (shorted by 150 Ω resistor)
MIC IN (MIC GAIN: MIC)
MIC IN (MIC GAIN: LINE)
4
Phone (unbalanced) / XLR (balanced)
-50 ~ -10 dBV
10 kΩ or more
Stereo phone (tip)
-10 dBV
10 kΩ or more
RCA pin
-10 dBV
10 kΩ or more
RCA pin
-10 dBV
10 kΩ or more
Stereo phone (ring)
-10 dBV
10 kΩ or more
20 mW or more (1 kHz, 16 Ω load)
0 dB is indicated by 5-dot LED bargraph meter when input / output
level is -10 dBV with the above standard input / master fader
position settings.
40 ~ 20 kHz ± 3 dB at LINE OUT
20 ~ 20 kHz ± 3 dB at LINE OUT
50 ~ 10 kHz ± 2 dB at PHONES (10 mW / 16 Ω)
66 dB or more at LINE OUT (DIN AUDIO)
68 dB or more at LINE OUT (IHF A)
73 dB or more at LINE OUT (DIN AUDIO)
75 dB or more at LINE OUT (IHF A)
X-24
MIXER SECTION (continued)
Distortion
(With 400 Hz HPF & 30 kHz LPF)
Fader Attenuation
Crosstalk
PAN Crosstalk
Click Noise
Power on / off
Other switching
Shock Noise
0.05 % or less (Input: 1 kHz / 0 dBV signal, MIC GAIN: LINE, LINE
OUT: 0 dBV.)
0.2 % or less (Input: 1 kHz / 0 dBV signal, MIC GAIN: LINE,
PHONES: 3 mW / 16Ω.)
70 dB or more at 1 kHz (from standard fader position)
60 dB or more at 1 kHz (Input: MIC IN, MIC GAIN: LINE, OUT: SEND
OUT. Measure level at non-input channel.)
42 dB or more at 1 kHz (Input: MIC IN, MIC GAIN: LINE, OUT: LINE
OUT. Measure level at non-input channel.)
-20 dBVp-p or less
-30 dBVp-p or less
-30 dBVp-p or less (Measure noise level when one side of appliance is
dropped 3 times from 5 cm height.)
RECORDER SECTION
Tape Speed
Wow & Flutter
PLAY
REC & PLAY
Pitch Control
MIN (PITCH VR: Fully CCW)
MAX (PITCH VR: Fully CW)
Fast Winding Time (FF / RWD)
Tape Counter Deviation
Standard Level
PLAY
REC & PLAY
Frequency response
PLAY
9.5 cm/s ± 1.5 % (3000 Hz ± 45 Hz when reproducing TCW-211 test
tape.)
0.25 % or less (TCW-211 test tape, ANSI WTD.)
0.30 % or less (AC-514 test tape, ANSI WTD.)
-45 % or less (TCW-211 test tape)
+12 % or more (TCW-211 test tape)
150 ± 20 sec. (TAPE: C-60)
0 ± 7 (FF from BOT to EOT and then RWD to BOT again.)
-10 ± 1 dB (TCW-231 test tape)
-10 ± 1 dBV (AC-514 test tape, 1 dB or less of level difference between
channels is also required.)
Test tape: SCW-977 / TCW-284F (NR: OUT)
+3 dB
-3 dB
40 Hz
REC & PLAY
400 Hz
12.5 kHz
Test tape: AC-514 (NR: OUT, recording level: 0 dB)
+3 dB
-3 dB
40 Hz
400 Hz
12.5 kHz
Test tape: AC-514 (NR: IN, recording level: -25dB)
6 dB
5 dB
250 Hz
10 kHz
12.5 kHz
5
X-24
RECORDER SECTION (continued)
Level Deviation at Reference Output Level
PLAY
1 dB or less at 400 Hz (NR: OUT, TCW-231 test tape)
3 dB or less at 40 HZ ~ 12.5 kHz (NR: OUT, SCW-977 /
TCW-284F test tape)
REC & PLAY
1 dB or less at 400 Hz (NR: OUT, AC-514 test tape)
2 dB or less at 100 Hz ~ 10 kHz (NR: OUT, AC-514 test tape)
S/N
PLAY
47 dB or more (NR: OUT, DIN AUDIO)
55 dB or more (NR: OUT, IHF-A)
REC & PLAY
45 dB or more (NR: OUT, DIN AUDIO)
48 dB or more (NR: OUT, IHF-A)
48 dB or more (NR: IN, DIN AUDIO)
55 dB or more (NR: IN, IHF-A)
Distortion (REC & PLAY)
2 % or less (Input signal: 1 kHz / standard level, standard fader position,
with 400 Hz HPF & 30 kHz LPF)
Erasure Ratio
67 dB or more at 1 kHz (Input signal: 1 kHz / 0 dBV, standard fader
position, with 1 kHz BPF)
Cross Erasure
1 dB or less (Input signal: 10 kHz / -10 dBV, standard fader position.
Measure level difference when adjacent track is put into REC mode.)
Channel Separation
50 dB or more (Input signal: 1 kHz / -10 dBV, standard fader position,
with 1 kHz BPF. Measure leakage level when adjacent track is put into
REC mode.)
Sync Crosstalk
-25 dBV or less (Input signal: 1 kHz / -10 dBV)
-10 dBV or less (Input signal: peak frequency / -10 dBV)
(Measure leakage level when adjacent track is put into REC mode.)
Bias Leakage
-35 dBV or less (No LED meter is lit. Standard fader position.
Measure leakage level at TAPE OUT when unit is put into REC mode.)
Click Noise
PLAY → STOP
-30 dBVp-p or less
REC → STOP
Monitor
-20 dBVp-p or less
PLAY
-20 dBVp-p or less
Punch In / Out
-30 dBVp-p or less at PLAY
Shock Noise
-30 dBVp-p or less (Measure playback noise level when one side of
appliance is dropped 3 times from 5 cm height.)
Specifications and appearance are subject to change without notice for product improvement.
6
X-24
2. CONTROLS, INDICATORS & CONNECTORS
< Top Panel >
1
2
3
4
L
LINE IN/INSERT
R
OFF ON STANDBY ON
DOLBY NR
LINE OUT
DC IN
12V
RESET
-
MASTER
PAN
000
+
WIDE PITCH
INPUT/PLAYBACK LEVEL
REC SEL
-10
5
0
3
6+
-10
5
0
3
6+
-10
5
0
3
6+
-10
5
0
3
6+
1
1
L
R
REC SEL
2
2
L
R
REC SEL
3
3
L
R
REC SEL
4
4
L
R
REC
Auto
Bounce
1/3
MIC IN
POWER
REHEARSAL
DOLBY B NR
2/4
REC
1. Master fader [MASTER]
2. Input/playback level control faders
[INPUT/PLAYBACK LEVEL]
3. Pan pot knob [PAN]
4. Record track select switches [REC SEL]
5. Record track LED
6. Level meter
7. Pitch control knob [WIDE PITCH]
8. Tape counter/reset button [RESET]
9. Cassette lid/Cassette tray
PLAY
REW
FF
STOP
PAUSE
10.Transport control buttons
Play button [PLAY]
Stop button [STOP]
Fast forward button [FF]
Rewind button [REW]
Recording button [REC]
Pause button [PAUSE]
11. Power LED [POWER]
12. Record LED [REC]
13. Auto bounce on/off button [Auto Bounce]
14. Auto bounce LED
15. Trim knob
7
X-24
< Front Panel >
PHONES
PUNCH
IN/OUT
2 (HOT)
3 (COLD)
1 (GND)
1. Mic input jacks [MIC IN 1/3, 2/4]
2. Headphone jack [PHONES]
3. Punch in/out jack [PUNCH IN/OUT]
< Rear Panel >
4
1. Line out jacks [LINE OUT L, R]
2. Line in/insert jacks [LINE/INSERT 1, 2, 3, 4]
3. Tape out jacks [TAPE OUT 1, 2, 3, 4]
TAPE OUT
3
2
1
4. Dolby B noise reduction on/off switch
[DOLBY NR ON/OFF]
5. Power switch [ON-STANDBY]
6. DC IN connector [DC IN 12V]
3. ADJUSTING PROCEDURES
3-1. Routine Maintenance
3-1-1. Cleaning
1) Head
With constant use, the head surface becomes soiled with magnetic particles from the tape, dirt and dust. Under such
conditions, the tape will not always be in smooth contact with the head and thus result in poor performance. Less
8
X-24
output in the high region and dropout (some parts of sound not reproduced) are typical symptoms. It is therefore
recommended to clean the heads periodically before recording and playback to avoid such troubles.
2) Capstan and pinch roller
Buildup of magnetic particles and dust on these parts will cause increase in wow, flutter and wrapping of tape on
the capstan. Thus, these parts must always be kept clean. Cleaning is done with cotton buds moistened with fluids
prescribed or recommended for tape recorders and especially the heads. Never use lacquer thinner, acetone or
other organic solvents.
3-1-2. Demagnetizing
The REC/PLAY head becomes magnetized by extended use or when the head is touched with a magnetized object.
As a result, frequency response especially in the high region will deteriorate, noise level increases, and in some
cases may transfer noise to valuable prerecorded tapes. For this reason, do not touch the head with magnetized
screwdriver and scissors or allow DC current to flow through the head winding such as when testing continuity
with a circuit tester. Should the head becomes magnetized, demagnetize it with a head demagnetizer designed for
this purpose.
Demagnetizing Procedures
1) After turning off the power of Model X-24, open the cassette lid and if a cassette tape is loaded, remove and place
it far away from the deck.
2) Switch on the head demagnetizer while holding it about one meter away from the Model X-24. Then, slowly move
the head demagnetizer tip to the head and wave the tip up and down several times close to the head surface.
3) On completing the above procedures, slowly draw the demagnetizer away from the head and switch it off when it
is more than one meter away from the head. As demagnetizm in the head cannot be seen, unlike the soiled head,
routine demagnetizing is necessary. It is recommended to do so at the same time the head is cleaned.
3-2. Test Equipment and Adjusting Tools
The following tools and equipment are required for adjusting the Model X-24.
1) Head height and tape contact adjusting jig
Model 9001 (P/N: 8286001000)
2) Torque meter
Cassette torque meter
TW-2231 (P/N: 8286008000): 0 ~ 200 g-cm (0 ~ 2.8 Oz-In)
Cassette torque meter
TW-2111A (P/N: 8286009000): 0 ~ 100 g-cm (0 ~ 1.4 Oz-In)
3) Mirror tape cassette
TCC-902 (P/N: 8286002000)
4) Test tape
Speed / Flutter (3 kHz)
Model 9152 (P/N: 82660022000)
Also 3150 Hz test tape for Wow & Flutter measurement is
recommended.
Reference playback level
TCW-231 (P/N: 8266002000)
Playback frequency response
TCW-284F (P/N: 8266003000)
5) Blank tape
C-90 or shorter tape, TYPE II / HIGH position
6) Audio oscillator
General type
7) Frequency counter
General type
8) Bandpass filter
General type
9) AC voltmeter
Stereo type is recommended.
10) Oscilloscope
General type
11) Wow & Flutter meter
General type
12) Distortion meter
General type
13) Frequency counter
General type
9
X-24
3-3. Tape Transport Mechanical Data
3-3-1. Reel torque
1) PLAY mode (TW-2111A)
2) FF/REW mode (TW-2231)
Supply: 1.5 ~ 6 g-cm
Takeup: 20 ~ 70 g-cm
FF /REW: 60 ~ 120 g-cm
3-3-2. Pinch roller pressure
Pull force
300 ~ 500 g
3-4. Tape Travel Check and Adjustment
Using the mirror type cassette, check to see that the tape is running stable between the ERASE and REC/PLAY
heads tape guides without weaving. If the tape is not running stable between the guides, erasure and frequency
response will be affected or the tape will be damaged by curling. It then becomes necessary to check the guide
height, perpendicularity of the head surface, and alignment of the pinch roller in relation to the capstan. In addition
to the mirror type cassette, the Head Height and Tape Contact Jig is required. To check the head guide height, the
cassette tape is removed and the above jig is placed on the head mount base plate. While firmly seating the jig on
the base plate surface, slide the jig past each head guide to see that it goes through without hitting them. Also check
perpendicularity of each head surface, using the rear check bar of the jig. If the guide is low, insert the required
amount of 0.1 mm or 0.2 mm thick washers under the head mounting legs, or vice versa, if it is high.
NOTE: Always adjust the head azimuth and phase when the head height is adjusted.
3-5. Volume & SW setting
Input fader
Master fader
Pan
At 8 ± 1 position
At 8 ± 1 position
Fully CCW (L) or CW (R) position
3-6. Check and Adjusting of Head Azimuth
1) Switch off the DOLBY SW.
2) Connect an AC volt meter to the TAPE OUT and playback the 12.5 kHz section on the TC-284W test tape.
3) Rotate the REC/PLAY head azimuth adjusting screw to obtain a maximum output level.
3-7. Tape Speed Check and Adjustment
1) Confirm that the Pitch control knob is at center position.
2) Connect a frequency counter or wow & flutter meter with frequency counter to the TAPE OUT and playback the
Model 9152 test tape.
3) Check the tape speed and wow & flutter if they satisfy the following specifications.
Tape Speed:
3000 Hz ± 30 Hz at both BOT (beginning of tape) and EOT (end of tape) positions
Wow & Flutter:
0.25 % (CCIR WTD) at both BOT and EOT positions
4) If the tape speed is not within the above specification, adjust R43 (3.3 kΩ) on the R/P AMP PCB assy.
5) Next, check if the tape speed variable range satisfies the specifications below.
Maximum tape speed: +12 % or more (3360 Hz or more)
Minimum tape speed: -45 % or less (1650 Hz or less)
3-8. Playback Level Calibration
1) Set the controls as follows.
Record track select switch: OFF
Dolby B noise reduction on/off switch: OFF
2) Connect an AC volt meter to the TAPE OUT 1 through 4 pin jacks.
10
X-24
3) Playback the TCW-231 test tape and check the output level if it is -10 dBV (0.3 V) ± 1 dB reading.
4) If the reading is not within the above range, adjust R106 ~ R406 on the R/P AMP PCB assy.
3-9. Playback Frequency Response Calibration
1) Set the controls as follows.
Record track select switch: OFF
Dolby B noise reduction on/off switch: OFF
2) Connect an AC volt meter to the TAPE OUT 1 through 4 pin jacks respectively.
3) Playback the TCW-284F test tape and adjust R103 ~ R403 so that the output level at 6.3 kHz is 0.5 dB lower than
the 400 Hz output level.
4) Confirm that the output level at 12.5 kHz is within ± 1 dB of the 400 Hz output level.
3-10. Erase Current Adjustment
At adjusting the erase current, put a blank cassette tape to the transport and the track to be adjusted is put in REC mode.
Assuming the track 1 to be adjusted, the oscilloscope probe is connected to the test point TP106 on the R/P PCB assy
and rotate and fix the core T101 for minimum voltage point. Then, confirm that the voltage at TP105 is more than 55 mV.
NOTE: If the voltage at TP106 is adjusted at minimum, the erase current flowing the erase head is set to the maximum.
Adjust the remaining tracks in the same way.
Track 2: Adjust T201 for minimum voltage at TP206. Then, confirm that the voltage at TP205 is more than 55 mV.
Track 3: Adjust T301 for minimum voltage at TP306. Then, confirm that the voltage at TP305 is more than 55 mV.
Track 4: Adjust T401 for minimum voltage at TP406. Then, confirm that the voltage at TP405 is more than 55 mV.
3-11. Coarse Bias Adjustment
At coarsely adjusting the bias current, put a blank cassette tape to the transport and the track to be adjusted is put
in REC mode. Assuming the track 1 to be adjusted, the oscilloscope probe is connected to the test point TP104 on
the R/P PCB assy and rotate and fix the pot R133 (220 kΩ) at 60 mV.
Adjust the remaining tracks in the same way.
Track 2: Adjust R233 so that the voltage at TP204 is 60 mV.
Track 3: Adjust R333 so that the voltage at TP304 is 60 mV.
Track 4: Adjust R433 so that the voltage at TP404 is 60 mV.
3-12. Record Level Calibration
* The procedures up to 3-10 must be completed before proceeding to this adjustment.
1) Put a blank cassette tape to the transport and apply a 400 Hz, -10 dBV (0.3 V) sine wave signal to the INPUT 1 and
2 phone jacks. (In the case the signal is input from XLR jack, the terminal No.3 (COLD) and No. 1 (GND) must be
shortened.)
2) Set the controls as follows.
Record track select switch: All tracks ON (Confirm that the REC TRK LEDs (1 ~ 4) are blinking.)
Trim knob: At minimum
Dolby B noise reduction on/off switch: OFF
3) Connect an AC volt meter to the TAPE OUT 1 ~ 4 pin jacks.
4) Put the transport into REC PAUSE mode and adjust the Input Fader so that the level at TAPE OUT 1 ~ 4 is -10 dBV
(0.3 V).
5) Release the PAUSE button and start recording the signal.
6) After recording a certain length, rewind the tape to the start point of recording section. Then, playback the tape and
check the level at TAPE OUT 1 ~ 4. If the AC volt meter reading is not within -10 dBV (0.3 V) ± 0.5 dB, adjust the
pot R121 ~ 421 (22 kΩ) on the R/P PCB assy.
11
X-24
3-13. Overall Frequency Response Adjustment
1) Set the controls under the same condition as 3.12 except the DOLBY switch. (The switch should be turned on.)
2) Apply a 400 Hz, -35 dBV (18 mV) signal to the INPUT 1 and 2 phone jacks.
3) Record the signal, rewind and playback the recorded section of the tape and memorize the output level at TAPE
OUT 1 ~ 4.
4) Next, apply 6 kHz & 12 kHz, -35 dBV (18 mV) signals to the INPUT 1 and 2 phone jacks.
5) Record the signal, rewind and playback the recorded section of the tape.
6) Check if the 6 kHz / 12 kHz output level at TAPE OUT 1 ~ 4 is within ± 2 dB comparing to the 400 Hz output level.
If the AC volt meter reading is not within the above specification, adjust the pot R133 ~ 433 (220 kΩ) on the R/P
AMP PCB assy so that the recording level at 6 kHz will be within the specification.
3-14. T.H.D. Measurement
1) Connect a distortion meter, 400 Hz HPF and 30 kHz LPF to TAPE OUT 1 ~ 4 and set the controls under the same
condition as 3-12.
2) Record a 1 kHz, -10 dBV (0.3 V) sine wave signal.
3) Playback the recorded part and check if the distortion level is less than 2 %.
3-15. Erasure Measurement
1) Connect a 1 kHz bandpass filter and AC volt meter to TAPE OUT 1 ~ 4 and set the controls under the same
condition as 3-12.
2) Record a 1 kHz, 0 dBV (1 V) sine wave signal which is 10 dB higher than the reference recording level on a blank
tape.
3) Rewind the tape to the start point of recording and advance it by a short length. Then, record again without
applying the signal on the remaining part.
4) Rewind the tape to the start point again and play it back. Check if the level ratio between the playback level and nosignal section (erased part) is 67 dB or more.
3-16. Cross Erasure Measurement
1) Set the controls as follow.
Trim knob: At minimum
Input fader: Standard position (At 8 ± 1)
Dolby B noise reduction on/off switch: OFF
2) Input a 100 kHz, -10 dBV signal to the INPUT 1 and 2 phone jacks and record the signal on all tracks.
3) Rewind the tape to the start point of recording. Then, erase the 10 kHz signal on the track and check if the level
difference at the corresponding track indicated below is within 1 dB.
Tracks to be measured
Track (s) to be erased
1
2
2
1 and 3
3
2 and 4
4
3
4) If the level goes down by more than 1 dB, check the tape running path again.
12
X-24
3-17. Sync crosstalk measurement
Sync crosstalk is a relative figure against the reference level, on how much of the recording signal from a track in
recording mode is leaking into the track being reproduced. When sync crosstalk is excessively high, playback output
during overdubbing will sound muddy by effect of the recording signal leakage or cause oscillation at pingpong
recording (where the playback output is transferred to another track).
1) Set the controls as follow and put a blank tape to the transport.
Trim knob: At minimum
Input fader: Standard position (At 8 ± 1)
Dolby B noise reduction on/off switch: OFF
2) Apply a signal whose level is -10 dBV (0.3 V).
3) Put one track into REC mode and check if the level at TAPE OUT on an adjacent track is within the specifications
listed below when sweeping the oscillator frequency.
At 1 kHz:
-25 dBV or less
1 ~ 20 kHz:
-10 dBV or less
3-18. S/N Measurement
3-18-1. Reproduce
1) Set the control as follow.
Dolby B noise reduction on/off switch: OFF
2) Connect an AC volt meter and put the transport into PLAY mode without loading a tape.
3) Check if the AC volt meter reading is within the following specifications.
DIN AUDIO: 47 dB
IHF-A:
55 dB
3-18-2. Record and reproduce (Overall)
1) Set the control as follow.
Dolby B noise reduction on/off switch: OFF
2) Put a blank cassette tape and start recording without applying a signal.
3) Rewind the tape to the start point and play it back.
4) Check if the AC volt meter reading is within the following specifications.
DIN AUDIO: 45 dB
IHF-A:
48 dB
5) Next, turn the Dolby switch on and repeat the above procedures 2) ~ 4).
6) Check if the AC volt meter reading is within the following specifications.
DIN AUDIO: 48 dB
IHF-A:
55 dB
3-19. Click Noise Measurement
3-19-1. Dolby switch on/off
1) Check if the click noise level at TAPE OUT when turning on/off the Dolby switch is less than -30 dBV p-p.
3-19-2. REC/STOP (monitor)
1) Check if the click noise level at TAPE OUT when punching out by pressing the STOP button is less than -20 dBVp-p.
3-19-3. REC/STOP (on tape)
1) Turn off the Dolby switch, turn on all the 1 ~ 4 record track switches and put a blank cassette tape in the transport.
2) Plug the foot switch (e.g. Model 8051) in the Punch in/out jack and press the PLAY button.
3) Press the foot switch repeatedly and check if the click level at TAPE OUT 1 ~ 4 is less than -20 dBVp-p.
13
X-24
3-20. Table of Adjusting Items
Adjusting Item
Tape speed
Playback level calibration
Playback frequency response calibration
Erase current adjustment
Coarse bias adjustment
Record level calibration
Overall frequency response adjustment
Measuring Point
TAPE OUT
TAPE OUT 1 ~ 4
TAPE OUT 1 ~ 4
TP106 ~ TP406
TP105 ~ TP405
TP104 ~ 404
TAPE OUT 1 ~ 4
TAPE OUT 1 ~ 4
Adjusting Point
R43 (R/P)
R106 ~ R406 (R/P)
R103 ~ R403 (R/P)
T101 ~ 401 (R/P)
R133 ~ 433
R121 ~ 421
R133 ~ 433
Ref. Clause (page)
3-7 (P10)
3-8 (P10 ~ 11)
3-9 (P11)
3-10 (P11)
3-11 (P11)
3-12 (P11)
3-13 (P12)
4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST
X-24 OVERALL EXPLODED VIEW & PARTS LIST
Ref. No.
Part No.
1
2
8216 6580 00
8212 5931 00
3
4
Description
Ref. No.
Part No.
Sheet, meter, X-24
Cover, cassette, X-14/24
20
21
8226 2091 01
8226 2081 01
Knob, cassette, REW, X-14/24
Knob, cassette, FF, X-14/24
8212 6050 00
8226 1590 04
Case, top, X-24
Knob, fader, N7, GR
22
23
8226 2111 01
8226 2121 01
Knob, cassette, STOP, X-14/24
Knob, cassette, PAUSE, X-14/24
5
6
8226 1590 05
8226 2070 02
Knob, fader, N7, R
Knob, pitch, gain, N7
24
25
8216 6600 00
8274 1340 00
Shield, center, X-24
PCB assy, Jack, X-24
7
8
8226 2070 01
8216 6490 00
Knob, pitch, N7
Cushion, cover, X-14/24
!
26
27
8221 2260 00
8274 1350 00
Bracket, jack, X-24
PCB assy, R/P, X-24
9
10
8216 4230 00
8214 2110 00
Reflector, cassette
Spring, cassette, X-18/14/24
11
12
8216 6590 00
8226 2360 01
Shield, top, X-24
Knob, sel, bounce, X-24
!
28
29
30
8204 0820 00
8212 6060 00
8270 7270 03
Plate, mounting, B
Case, bottom, X-24
AC adaptor, AD-12A, USA/CND
13
14
8204 0370 01
8226 1620 05
Ring, CSTW-2
Knob, volume, N7, Y
8270 7270 06
8270 7270 07
AC adaptor, AD-12A, EUR
AC adaptor, AD-12A, UK
15
16
8274 1330 00
8216 6610 00
PCB assy, Mixer, X-24
Shield, bottom, X-24
31
8270 7270 10
8274 1400 00
AC adaptor, AD-12A, JPN
PCB assy, Regulator, X-24
17
18
8270 8240 00
8226 2131 01
Transport assy, X-24
Knob, cassette, REC, X-14/24
32
33
8216 6800 00
8277 4470 15
Sheet, isolation X-24
Cable assy, 1P, earth lug, D3-8MF/F,
19
8226 2101 01
Knob, cassette, PLAY, X-14/24
!
Description
L150
X-24 TRANSPORT EXPLODED VIEW & PARTS LIST
14
Ref. No.
Part No.
Description
1
2
8259 0500 00
8259 0520 00
Head, erase, X-14/24
Head, R/P, 4T, N-LR44RS07, X-24
3
4
8260 4620 00
8260 4630 00
Pinch roller assy
Idler arm assy
5
6
8260 4640 00
8260 4650 00
Fly wheel assy
Motor assy
7
8
8260 4660 00
8212 4930 00
F.R. arm assy
Lever, REC safety
9
10
8212 4910 00
8212 4920 00
Gear, arm
Gear, FF
11
12
8253 4280 00
8253 4290 00
SW, leaf, MSW-1541XACV
SW, leaf, MSW-1716CV
Ref. No.
Part No.
13
8223 2770 00
Description
Shaft, button
14
15
8216 5310 00
8216 5320 00
Belt, main
Belt, sub
16
17
8216 5330 00
8221 1970 00
Belt, counter
Bracket, button
18
19
8256 1690 00
8214 3550 00
Counter
Spring, pinch arm
20
21
8214 3560 00
8214 3570 00
Spring, FR torsion
Spring, stop/pause
22
23
8214 3580 00
8214 3590 00
Spring, safety sensor
Spring, rec lever
24
8214 3600 00
Spring, play lever
X-24
X-24 OVERALL EXPLODED VIEW
1
2
5
6
BBT 3x8 CZn
4
8
7
9
17
3
18
10
19
20
21
22
23
BBT 3x8 CZn
11
BBT 3x8 CZn
32
30
BBT 3x8 CZn
28
BBT 3x8 CZn
13
12
BBT 3x8 CZn
24
27
33
BBT 3x8 CZn
BBT 3x8 CZn
25
BBT
3x8 CZn
14
16
26
31
29
15
BBT 3x8 CZn
BBT 3x12 BZn
15
X-24
16
X-24 TRANSPORT EXPLODED VIEW
X-24
• MIXER / JACK PCBs
X-24 PCB PATTERN DRAWING
17
X-24
18
• R/P / REGULATOR PCBs
X-24
X-24 Parts List
• MIXER PCB
Ref. No.
Part No.
Description
PCB assy, Mixer, X-24
Plain PCB, Mixer, X-24
Ref. No.
Part No.
Description
R108~408 8230 1384 32
R109~409 8230 1383 03
HT, carbon, 1/4W, 4.3kΩ, 5%
HT, carbon, 1/4W, 30kΩ, 5%
R110~410 8230 1384 73
R111~411 8230 1381 23
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 12kΩ, 5%
Description
ST, analog, NJM2068M
R112~412 8230 1381 04
R113~413 8230 1381 23
HT, carbon, 1/4W, 100kΩ, 5%
HT, carbon, 1/4W, 12kΩ, 5%
U002~004 8236 7207 00
U005
8236 0352 03
ST, analog, NJM4560M
SIP, analog, NJM4556AL
R114~414 8230 1381 23
R115~415 8230 1384 73
HT, carbon, 1/4W, 12kΩ, 5%
HT, carbon, 1/4W, 47kΩ, 5%
U006
8236 7207 00
U007~012 8236 5707 01
ST, analog, NJM4560M
ST, digital, DTA144EK
R116~416 8230 1382 43
R117~417 8230 1382 43
HT, carbon, 1/4W, 24kΩ, 5%
HT, carbon, 1/4W, 24kΩ, 5%
U101~401 8236 5000 00
U102~402 8236 5706 01
ST, digital, CMOS, 4066BF
ST, digital, DTC144EK
R118~418 8230 1383 03
R119~419 8230 1383 03
HT, carbon, 1/4W, 30kΩ, 5%
HT, carbon, 1/4W, 30kΩ, 5%
U103~403 8236 5706 01
U104~404 8236 0832 00
ST, digital, DTC144EK
SIP, analog, LED driver, BA6124
R120~420 8230 1381 23
R121~421 8230 1385 12
HT, carbon, 1/4W, 12kΩ, 5%
HT, carbon, 1/4W, 5.1kΩ, 5%
U105~205 8236 5702 01
ST, digital, driver, DTC314TK
R122~422 8230 1381 03
R125~425 8230 1384 73
HT, carbon, 1/4W, 10kΩ, 5%
HT, carbon, 1/4W, 47kΩ, 5%
R126~426 8230 1381 23
R127~427 8230 1381 23
HT, carbon, 1/4W, 12kΩ, 5%
HT, carbon, 1/4W, 12kΩ, 5%
B001
8274 1330 00
8251 9680 01
ICs
Ref. No.
U001
Ref. No.
Part No.
8236 5405 00
DIODEs
Description
Part No.
D001~005 8234 1046 02
Opt., VT, LED, GRN,
SLR-332MC-TE7
R130, 230 8240 1710 28
Pot, PI, RT14, 100kΩCC,
RK14K123, L15
D006
8234 1046 01
Opt., VT, LED, RED,
SLR-332VC-TE7
R131
8240 2740 03
R133~433 8240 1670 06
Pot, PI, SL30, 20kΩA, RS30H111
Pot, PI, RT09, 50kΩB, RK09K113
D007
8234 1046 02
Opt., VT, LED, GRN,
SLR-332MC-TE7
R134~434 8240 2740 04
R135
8240 1670 08
Pot, PI, SL30, 20kΩAA, RS30H121
Pot, PI, RT09, 10kΩB, RK09K113
D101~401 8234 5007 00
D102~402 8234 5007 00
HT, 1SS136
HT, 1SS136
R150, 250 8230 1386 83
R151, 250 8230 1381 23
HT, carbon, 1/4W, 68kΩ, 5%
HT, carbon, 1/4W, 12kΩ, 5%
D103~403 8234 1046 03
Opt., VT, LED, YEL,
SLR-332YC-TE7
R152, 252 8230 1382 43
R153, 253 8230 1384 73
HT, carbon, 1/4W, 24kΩ, 5%
HT, carbon, 1/4W, 47kΩ, 5%
D104~404 8234 1046 03
Opt., VT, LED, YEL,
SLR-332YC-TE7
R154, 254 8230 1381 02
R155, 255 8230 1384 73
HT, carbon, 1/4W, 1kΩ, 5%
HT, carbon, 1/4W, 47kΩ, 5%
D105~405 8234 1046 03
Opt., VT, LED, YEL,
SLR-332YC-TE7
R156, 256 8230 1381 60
HT, carbon, 1/4W, 16Ω, 5%
D106~406 8234 1046 01
Opt., VT, LED, RED,
SLR-332VC-TE7
D107~407 8234 1046 01
Opt., VT, LED, RED,
SLR-332VC-TE7
RESISTORs
CAPACITORs
ALU = Electrolytic type
Ref. No.
Part No.
CER = Ceramic type
Description
C001, 002 8232 1424 76
C005, 006 8232 1424 76
VT, ALU, 10V, 47µF, 20%, SME
VT, ALU, 10V, 47µF, 20%, SME
Ref. No.
Part No.
R001~007 8230 1387 51
Description
HT, carbon, 1/4W, 750Ω, 5%
C010
C011
8232 8012 21
8232 8012 20
VT, CER, 50V, 220pF, 5%, SL
VT, CER, 50V, 22pF, 5%, SL
R010~012 8230 1381 23
R013
8230 1384 73
HT, carbon, 1/4W, 12kΩ, 5%
HT, carbon, 1/4W, 47kΩ, 5%
C012
C013
8232 8012 21
8232 8012 20
VT, CER, 50V, 220pF, 5%, SL
VT, CER, 50V, 22pF, 5%, SL
R103, 203 8230 1381 02
R104, 204 8230 1381 02
HT, carbon, 1/4W, 1kΩ, 5%
HT, carbon, 1/4W, 1kΩ, 5%
C014
8232 1431 06
C103, 203 8232 1421 07
VT, ALU, 16V, 10µF, 20%, SME
VT, ALU, 10V, 100µF, 20%, SME
R105, 205 8230 1381 04
R106, 206 8230 1381 04
HT, carbon, 1/4W, 100kΩ, 5%
HT, carbon, 1/4W, 100kΩ, 5%
C104, 204 8232 1421 07
C105, 205 8232 8011 00
VT, ALU, 10V, 100µF, 20%, SME
VT, CER, 50V, 10pF, 5%, SL
R107, 207 8230 1384 73
HT, carbon, 1/4W, 47kΩ, 5%
C106, 206 8232 8011 00
VT, CER, 50V, 10pF, 5%, SL
19
X-24
Ref. No.
Part No.
Description
Part No.
Description
C107, 207 8232 1431 06
C108~408 8232 1431 06
VT, ALU, 16V, 10µF, 20%, SME
VT, ALU, 16V, 10µF, 20%, SME
R102, 202 8230 1381 23
Resistor, HT, carbon, 1/4W,
12kΩ, 5%
C109~409 8232 1431 06
C110~410
VT, ALU, 16V, 10µF, 20%, SME
Wire, jumper, IPS-1041-2, F5
C101, 201
C102, 202
N/A
N/A
C111~411
C112~412
N/A
N/A
E001
E002
Wire, jumper, IPS-1041-2, F5
Wire, jumper, IPS-1041-4, F10
C113~413 8232 1431 06
C114~414 8232 1431 06
VT, ALU, 16V, 10µF, 20%, SME
VT, ALU, 16V, 10µF, 20%, SME
J001
J002
8245 1711 03
8245 1712 03
Connector, PI, jack, 8283, 3P, WHT
Connector, PI, jack, 8283, 3P, RED
C115~415 8232 1431 06
C150, 250 8232 8012 21
VT, ALU, 16V, 10µF, 20%, SME
VT, CER, 50V, 220pF, 5%, SL
J003
J005
8245 1713 03
8245 2980 00
Connector, PI, jack, 8283, 3P, BLK
Connector, PL, jack, phone,
C151, 251 8232 8012 20
C152, 252 8232 1431 06
VT, CER, 50V, 22pF, 5%, SL
VT, ALU, 16V, 10µF, 20%, SME
8245 2980 00
LGR4609-7000
Connector, PL, jack, phone,
C153, 253 8232 8012 21
C154, 254 8232 8012 20
VT, CER, 50V, 220pF, 5%, SL
VT, CER, 50V, 22pF, 5%, SL
J101, 201
8245 3390 04
LGR4609-7000
Connector, PL, jack, phone,
C155, 255 8232 1431 06
C156, 256 8232 1424 77
VT, ALU, 16V, 10µF, 20%, SME
VT, ALU, 10V, 470µF, 20%, SME
J102, 202
8245 2680 04
YKB21-5074
Connector, PL, jack, XLR31,
W004
8276 9082 20
NC3FAHR10
Cable, flat, 2P, L200
Y901
8207 0122 02
Holder, cable, 2P, 51048
MISCELLANEOUS
Ref. No.
E001
Part No.
Description
Wire, jumper, IPS-1041-2, F5
J006
E002
J004
8245 2120 01
Wire, jumper, IPS-1041-4, F10
Connector, PL, jack, RCA, 2P, BLK
J007
J104~404
8245 5280 01
8245 2980 00
Connector, PI, jack, 1P, RT-01T-1.0B
Connector, PL, jack, phone,
Ref. No.
S001~005 8253 1350 02
LGR4609-7000
Switch, PT, tact, SOR-112HS
B001
Y005
Y006
8207 0122 09
8207 0122 13
Holder, cable, 9P, 51048
Holder, cable, 13P, 51048
Y007
Y008
8207 0122 08
8207 0122 06
Holder, cable, 8P, 51048
Holder, cable, 6P, 51048
W001
8277 0160 15
Cable assy, shield 2C, 3P,
WHT-9073, L150
W002
8277 0161 30
Cable assy, shield 2C, 3P,
RED-9073, L300
W003
8277 0162 50
Cable assy, shield 2C, 3P,
BLK-9073, L500
W005
W006
8276 9086 25
8276 9093 25
Cable, flat, 6P, L250
Cable, flat, 13P, L250
W007
W008
8276 9088 25
8276 9089 25
Cable, flat, 8P, L250
Cable, flat, 9P, L250
• JACK PCB
Ref. No.
B001
Ref. No.
Part No.
8274 1340 00
8251 9681 02
Part No.
R101, 201 8230 1381 23
20
Ref. No.
Description
PCB assy, Mixer, X-24
Plain PCB, Jack, X-24
Description
Resistor, HT, carbon, 1/4W,
12kΩ, 5%
• R/P PCB
Part No.
8274 1350 00
8251 9700 01
Description
PCB assy, R/P, X-24
Plain PCB, R/P, X-24
ICs
Ref. No.
U001
U002
U003
Part No.
Description
N/A
8236 0782 06
8236 0361 00
PT, digital, driver, DTA143TS
SIP, analog, BA4560N
U004~022 8236 5707 01
U023
8236 0837 00
ST, digital, driver, DTA144EK
SDI, digital, CPU, X-24,
U030, 031 8236 5706 01
TMP47C200BN
ST, digital, driver, DTC144EK
U040
U041
ST, digital, driver, DTC144EK
ST, digital, driver, DTA144EK
8236 5706 01
8236 5707 01
U101~401 8236 5405 00
U102~402 8236 0457 00
ST, analog, NJM2068M
SOP, analog, HA12135AF
U104~404 8236 5701 03
U105~405 8236 5707 01
ST, digital, driver, DTC114TK
ST, digital, driver, DTA144EK
U106~406 8236 5701 03
U107~407 8236 5701 03
ST, digital, driver, DTC114TK
ST, digital, driver, DTC114TK
U108~408 8236 5701 03
U109~409 8236 4190 00
ST, digital, driver, DTC114TK
SIP, analog, head SW, BA7755A
TRANSISTORs
Ref. No.
Q001
Part No.
8234 1430 00
Description
V, NPN, 2SC3071
X-24
Ref. No.
Part No.
Q002, 003 8234 5043 03
Description
VT, NPN, 2SC1740S, S
Ref. No.
Part No.
R102~402 8230 1381 04
Description
HT, carbon, 1/4W, 100kΩ, 5%
Q004
8234 5050 00
Q101~401 8234 5043 03
VT, FET, 2SK117, Y/GR/BL
VT, NPN, 2SC1740S, S
R103~403 8231 5032 23
R105~405 8230 1383 94
R-TRIM, PIT, carbon, 22kΩ, 637T
HT, carbon, 1/4W, 390kΩ, 5%
R106~406 8231 5034 71
R107~407 8230 1383 32
R-TRIM, PIT, carbon, 470Ω, 637T
HT, carbon, 1/4W, 3.3kΩ, 5%
VT, DSK10C-BT
Wire, jumper, IPS-1041-2, F5
R108~408 8230 1381 81
R109~409 8230 1382 22
HT, carbon, 1/4W, 180Ω, 5%
HT, carbon, 1/4W, 2.2kΩ, 5%
D003
8234 0196 02
D004, 005 8234 5007 00
VT, DSK10C-BT
HT, 1SS136
R110~410 8230 1383 32
R113~413 8230 1381 83
HT, carbon, 1/4W, 3.3kΩ, 5%
HT, carbon, 1/4W, 18kΩ, 5%
D101~401 8234 5007 00
D102~402 8234 5007 00
HT, 1SS136
HT, 1SS136
R114~414 8230 1382 03
R115~415 8230 1382 03
HT, carbon, 1/4W, 20kΩ, 5%
HT, carbon, 1/4W, 20kΩ, 5%
D103~403 8234 5007 00
D104~404 8234 5007 00
HT, 1SS136
HT, 1SS136
R116~416 8230 1382 41
R117~417 8230 1382 02
HT, carbon, 1/4W, 240Ω, 5%
HT, carbon, 1/4W, 2kΩ, 5%
R118~418 8230 1382 02
R119~419 8230 1382 02
HT, carbon, 1/4W, 2kΩ, 5%
HT, carbon, 1/4W, 2kΩ, 5%
Ref. No.
D001
D002
DIODEs
Description
Part No.
8234 0196 02
RESISTORs
Ref. No.
R001
Part No.
8230 1388 21
Description
HT, carbon, 1/4W, 820Ω, 5%
R120~420 8230 1384 72
R121~421 8231 5032 23
HT, carbon, 1/4W, 4.7kΩ, 5%
R-TRIM, PIT, carbon, 22kΩ, 637T
R002
R003
8230 1383 94
8230 1382 03
HT, carbon, 1/4W, 390kΩ, 5%
HT, carbon, 1/4W, 20kΩ, 5%
R122~422 8230 1386 22
R123~423 8230 1383 63
HT, carbon, 1/4W, 6.2kΩ, 5%
HT, carbon, 1/4W, 36kΩ, 5%
R004, 005 8230 1381 03
R006. 007 8230 1382 20
HT, carbon, 1/4W, 10kΩ, 5%
HT, carbon, 1/4W, 22Ω, 5%
R124~424 8230 1381 53
R125~425 8230 1381 53
HT, carbon, 1/4W, 15kΩ, 5%
HT, carbon, 1/4W, 15kΩ, 5%
R008
R010
8230 1387 51
8230 0510 06
HT, carbon, 1/4W, 750Ω, 5%
V, array, 1/8W, 47kΩ-47kΩ x 5,
R129~429 8230 1386 22
R130~430 8230 1381 03
HT, carbon, 1/4W, 6.2kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
8230 0361 03
5%, RKC-E
V, array, 1/8W, 10kΩ x 4, 5%, RKC
R131~431 8230 1381 01
R132~432 8230 1381 09
HT, carbon, 1/4W, 100Ω, 5%
HT, carbon, 1/4W, 1Ω, 5%
R012
8230 0361 03
R013, 014 8230 1384 79
V, array, 1/8W, 10kΩ x 4, 5%, RKC
HT, carbon, 1/4W, 4.7Ω, 5%
R133~433 8231 5032 24
R134~434 8230 1382 22
R-TRIM, PIT, carbon, 220kΩ, 637T
HT, carbon, 1/4W, 2.2kΩ, 5%
R020
R021
8230 1384 73
8230 1381 03
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
R135~435 8230 1382 22
R136~436 8230 1382 20
HT, carbon, 1/4W, 2.2kΩ, 5%
HT, carbon, 1/4W, 22Ω, 5%
R022~026 8230 1384 73
R027
8230 1381 03
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
CAPACITORs
R028, 029 8230 1384 73
R030
8230 1381 03
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
ALU = Electrolytic type
CER = Ceramic type
R031
R032
8230 1384 73
8230 1381 03
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
PES = Mylar type
PPR = Polypropylene type
R033
R038
8230 1384 73
8230 1381 03
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
Ref. No.
C001
Part No.
8232 8031 03
Description
VT, CER, 50V, 0.01µF, YF
R040
R041
8230 1381 05
8230 1381 03
HT, carbon, 1/4W, 1MΩ, 5%
HT, carbon, 1/4W, 10kΩ, 5%
C002
C003
8232 1444 77
8232 1441 07
VT, ALU, 25V, 470µF, 20%, SME
VT, ALU, 25V, 100µF, 20%, SME
R042
R043
8230 1383 32
8231 5033 32
HT, carbon, 1/4W, 3.3kΩ, 5%
R-TRIM, PIT, carbon, 3.3kΩ, 637T
C004
C005
8232 1421 07
8232 1432 26
VT, ALU, 10V, 100µF, 20%, SME
VT, ALU, 16V, 22µF, 20%, SME
R044
R050
8230 1385 11
8230 1382 03
HT, carbon, 1/4W, 510Ω, 5%
HT, carbon, 1/4W, 20kΩ, 5%
C006, 007 8232 1422 27
C008, 009 8232 1421 07
VT, ALU, 10V, 220µF, 20%, SME
VT, ALU, 10V, 100µF, 20%, SME
R051
R052
8230 1384 72
8230 1383 32
HT, carbon, 1/4W, 4.7kΩ, 5%
HT, carbon, 1/4W, 3.3kΩ, 5%
C012
8232 1432 26
C020~025 8232 8031 03
VT, ALU, 16V, 22µF, 20%, SME
VT, CER, 50V, 0.01µF, YF
R053
R054
8230 1384 73
8230 1384 70
HT, carbon, 1/4W, 47kΩ, 5%
HT, carbon, 1/4W, 47Ω, 5%
C028
C029
8232 8181 04
8232 8031 03
VT, CER, 25V, 0.1µF, YF
VT, CER, 50V, 0.01µF, YF
R055
R056
8230 1383 33
8230 1384 72
HT, carbon, 1/4W, 33kΩ, 5%
HT, carbon, 1/4W, 4.7kΩ, 5%
C050
C051
8232 1421 07
8232 9011 04
VT, ALU, 10V, 100µF, 20%, SME
VT, PES, 50V, 0.1µF, 5%, AMZ
R101~401 8230 1382 43
HT, carbon, 1/4W, 24kΩ, 5%
C052
8232 9012 23
VT, PES, 50V, 0.022µF, 5%, AMZ
R011
21
X-24
Ref. No.
Part No.
C053, 054 8232 9014 72
Description
VT, PES, 50V, 0.0047µF, 5%, AMZ
Ref. No.
J301
Part No.
8245 5472 05
Description
Connector, PI, jack, PH, 5P, BLU
C055
8232 1431 06
C101~401 8232 8015 61
VT, ALU, 16V, 10µF, 20%, SME
VT, CER, 50V, 560pF, 5%, SL
J401
L001
8245 5473 05
8242 1420 00
Connector, PI, jack, PH, 5P, GRN
Coil, bias, 150µH
C102~402 8232 1461 05
C103~403
VT, ALU, 50V, 1µF, 20%, SME
N/A
L101~401 8256 0660 00
L102~402 8256 0990 00
Module, trap, 80kHz
Module, MPX, XR-5/X-24
C104~404 8232 8012 21
C105~405 8232 9018 22
VT, CER, 50V, 220pF, 5%, SL
VT, PES, 50V, 0.0082µF, 5%, AMZ
L103~403 8256 0660 00
S001, 002 8253 6520 05
Module, trap, 80kHz
SW, PL, slide, 2-2,
C106~406 8232 1424 76
C107~407 8232 1462 25
VT, ALU, 10V, 47µF, 20%, SME
VT, ALU, 50V, 2.2µF, 20%, SME
TP001
non-shortening, SSSU1, L09
Pin, header
C108~408 8232 9013 92
C109~409 8232 1461 05
VT, PES, 50V, 0.0039µF, 5%, AMZ
VT, ALU, 50V, 1µF, 20%, SME
TP101~401 8276 0010 00
TP104~404 8276 0010 00
Pin, header
Pin, header
C110~410 8232 1461 05
C112~412 8232 1464 75
VT, ALU, 50V, 1µF, 20%, SME
VT, ALU, 50V, 4.7µF, 20%, SME
TP105~405 8276 0010 00
TP106~406 8276 0010 00
Pin, header
Pin, header
C113~413 8232 1462 24
C114~414 8232 1424 76
VT, ALU, 50V, 0.22µF, 20%, SME
VT, ALU, 10V, 47µF, 20%, SME
T001
8242 1250 00
T101~401 8242 2470 00
Transformer, osc, main, 80kHz
Transformer, osc, sub, 80kHz
C115~415 8232 1424 76
C116~416 8232 1424 76
VT, ALU, 10V, 47µF, 20%, SME
VT, ALU, 10V, 47µF, 20%, SME
W001
X001
Cable assy, earth lug, D3-kink, L70
Resonator, P, CER, 4MHz, EFO
C117~417 8232 1424 76
C118~418 8232 9012 73
VT, ALU, 10V, 47µF, 20%, SME
VT, PES, 50V, 0.027µF, 5%, AMZ
C119~419 8232 1431 06
C120~420
VT, ALU, 16V, 10µF, 20%, SME
N/A
C121~421 8232 1461 04
C122~422 8232 8011 81
VT, ALU, 50V, 0.1µF, 20%, SME
VT, CER, 50V, 180pF, 5%, SL
C123~423 8232 9011 82
C124~424 8232 1462 25
VT, PES, 50V, 0.0018µF, 5%, AMZ
VT, ALU, 50V, 2.2µF, 20%, SME
C125~425 8232 8012 21
C126~426 8233 0481 52
VT, CER, 50V, 220pF, 5%, SL
VT, PPR, 100V, 0.0015µF, 5%, APS
C128~428 8232 9011 03
VT, PES, 50V, 0.01µF, 5%, AMZ
Ref. No.
E001
E002
Wire, jumper, IPS-1041-2, F5
Wire, jumper, IPS-1041-3, F7.5
E003
E004
Wire, jumper, IPS-1041-4, F10
Wire, jumper, IPS-1041-5, F12.5
J001
22
MISCELLANEOUS
Part No.
Description
8245 5410 00
Connector, PL, jack, DC-inlet,
YKB31-0012
J002
J003
8245 3080 02
8245 5470 09
Connector, PI, jack, SBRK, 2S-4
Connector, PI, jack, PH, 9P, WHT
J004
8245 2260 01
Connector, PL, jack, RCA 4P,
YKC21-3115
J005
J006
8245 3080 06
8245 3080 13
Connector, PI, jack, SBRK, 6S-4
Connector, PI, jack, SBRK, 13S-4
J007
J008
8245 3080 08
8245 3080 09
Connector, PI, jack, SBRK, 8S-4
Connector, PI, jack, SBRK, 9S-4
J009, 010
8245 5280 01
Connector, PI, jack, 1P,
RT-01T-1.0B
J011
J101
8245 3080 04
8245 5470 05
Connector, PI, jack, SBRK, 4S-4
Connector, PI, jack, PH, 5P, WHT
J201
8245 5471 05
Connector, PI, jack, PH, 5P, RED
8276 0010 00
8276 3640 07
8256 0980 00
• REGULATOR PCB
Ref. No.
Part No.
Description
8274 1400 00
8251 9700 02
B001
Ref. No.
PCB assy, Regulator, X-24
Plain PCB, Regulator, X-24
Part No.
Description
U001
8236 0449 10
C001, 002 8232 9011 03
IC, 220, regulator, µPC2410HF
Capacitor, VT, PES, 50V, 0.01µF,
W011
8276 9084 20
AMZV
Cable, flat, 4P, L200
Y101
8207 0122 04
Holder, cable, 4P, 51048
Abbreviation
ST: Small Outline Package
SIP: Single In-line Package
220: TO-220 type
SDI: Shrink DIP (dual in-line)
SOP: Small Outline Package
HT: Horizontal mount taping device
V:
Vertical mount
VT: Vertical mount Taping device
PI:
PL:
Penetrate mount I form (straight)
Penetrate mount L form (right angle)
PT: Penetrate mount Taping device
PIT: Penetrate mount I form Taping device
J404
AGND
+VCC
-VCC
HGND
H+VCC
H-VCC
INPUT IMP
14Kohm
LINE IN4
-10dBV
J304
INPUT IMP
14Kohm
LINE IN3
-10dBV
J204
INPUT IMP
14Kohm
LINE IN2
-10dBV
J104
INPUT IMP
14Kohm
LINE IN1
-10dBV
INPUT IMP
MIC :12Kohm
LINE:22Kohm
INPUT MIC 2/4
(BALANCE)
-10dBV <> -50dBV
INPUT IMP
MIC :12Kohm
LINE:22Kohm
INPUT MIC 1/3
(BALANCE)
-10dBV <> -50dBV
1
2
3
4
5
6
W5
3
3
H-VCC
HGND
H+VCC
R408
4.3K
R308
4.3K
R208
4.3K
R108
4.3K
1
2
1
2
-VCC
750
POWER LED
D7
R7
-VCC
+VCC
J202
J201
J102
J101
JACK PCB (1/2)
+VCC
AGND
R410
47K
R310
47K
R210
47K
H-VCC
REC
LED
A.B
TRK4
TRK3
TRK2
1
1
1
1
1
J2
3
2
1
J1
3
2
1
AGND
R202
12K
R110
47K
TRK1
C408
10/16
C308
10/16
C208
10/16
C108
10/16
C202
NON
R201
12K
R102
12K
C102
NON
C201
NON
R101
12K
C101
NON
D6
SW5
2
D5
SW4
2
D4
SW3
2
D3
SW2
2
D2
SW1
2
D1
750
R6
750
R5
750
R4
750
R3
750
R2
750
R1
R104
1K
R103
1K
2
2
2
2
2
2
7
8
9
3
6
1
7
R230A
8
2
5
100KCC
4
W6
3
U12
DTA144EK
1
3
U11
DTA144EK
1
3
U10
DTA144EK
1
3
U9
DTA144EK
1
1
3
U8
DTA144EK
9
3
6
R206
100K
C204
100/10
C203
100/10
5
6
3
2
U1B
7
C206
10P
2068
C205
R205 10P
100K
C106
10P
1
U1A
-VCC
4
2068
8
+VCC
C105
R105 10P
100K
SEL
SW
2
WIDE PITCH
CONTROL
(+15% <-> -50%)
R135
10KB
4
5
3
1
R207
47K
C207
10/16
R107
47K
ART T T T T T T T A P
• ERRRRRRRR • I
BCKKKKKKKKB T
C
1 2 3 4 1 2 3 4
H
LED
-10dBV
C107
10/16
1 1 1 1
1 2 3 4 5 6 7 8 9 0 1 2 3
H+VCC
R230B
R106
100K
C104
100/10
C103
100/10
TRIM
(0dB <-> 40dB)
1
R130A
2
5
R130B
100KCC
4
1
3
U7
DTA144EK
R204
1K
R203
1K
AGND
W2
3
2
1
AGND
W1
3
2
1
TRIM
(0dB <-> 40dB)
MIXER PCB
MIXER / JACK PCBs
1
1
4
1
2
5
4
10
2
1 2 3 4 5 6 7 8
PPPPRRRR
BBBBEEEE
4 3 2 1 CCCC
1 2 3 4
W7
5
U401C
1
2
U401B
1
3
4
10
2
1
4 U401A
-VCC
A.B
3
PB
11
1
3
U301C
+VCC
4
10
2
4
U301A
5
U301B
REC 7
1
A.B
3
PB
11
-VCC
REC 7
1
1
2
U201C
+VCC
A.B
3
1
3
U201B
-VCC
PB
11
5
10
2
1
4 U201A
REC 7
1
1
2
U101C
+VCC
A.B
3
PB
11
1
3
U101B
-VCC
REC 7
1
4 U101A
+VCC
2
R409
30K
D401
-VCC
U402
1
DTC144EK
3
R411
12K
D402
R309
30K
D301
U302
DTC144EK
-VCC
1
3
R311
12K
D302
R209
30K
D201
U202
DTC144EK
3
-VCC
1
D202
R425
47K
+VCC
C409
10/16
2
3
R109
30K
D101
U102
DTC144EK
-VCC
1
R211
12K
R325
47K
+VCC
C309
10/16
2
R111
12K
D102
R225
47K
+VCC
C209
10/16
2
R125
47K
+VCC
C109
10/16
EEEEAAAAP
/ / / / • • • • •
DDDDBBBBM
1 2 3 4 1 2 3 4 U
T
E
R212
100K
R312
100K
1
7
6
4560 5
R12
12K
U6B
R13
47K
C14
10/16
-VCC
1
U403
DTC144EK
2
R412
100K
U303
DTC144EK
2
-VCC
1
U203
DTC144EK
2
1 2 3 4 5 6 7 8 9 W8
3
1
2
1
-VCC
R431
20KA
3
R112
100K
U103
DTC144EK
2
-VCC
INPUT
FADER
3
1
2
R331
20KA
3
INPUT
FADER
3
1
2
R231
20KA
3
INPUT
FADER
3
1
2
R131
20KA
3
-16.0dBV
INPUT
FADER
C13
22P
C12
220P
7
R11
12K
8
2
-VCC
R315
47K
C313
10/16
R215
47K
C213
10/16
R115
47K
C113
10/16
C11
22P
C10
220P
R415
47K
C413
10/16
+VCC 12K
R10
-10dBV
4560 3
U6A
4
1
U3B
+VCC
4560
R426
12K
R414
12K
5
6
12K
R413
1
U3A
-VCC
4
4560
8
+VCC
R326 +VCC
12K
R314
12K
3
2
12K
7
U2B
+VCC
4560
R313
R226
12K
R214
12K
5
6
12K
R213
1
U2A
-VCC
4
4560
8
+VCC
(6.0dB)
R126 +VCC
12K
R114
12K
3
2
12K
R113
R427
12K
R327
12K
R227
12K
R127
12K
9
9
9
9
6
6
6
A.B
6
U401D
A.B
U301D
A.B
U201D
A.B
U101D
8
8
8
8
R417
24K
PAN
R433
50KB
R416
24K
R317
24K
PAN
R333
50KB
R316
24K
R217
24K
PAN
R233
50KB
R216
24K
R117
24K
PAN
R133
50KB
R116
24K
4 5 1
3
4 5 1
3
4 5 1
3
4 5 1
3
2
2
2
2
-17.1dBV
R419
30K
R418
30K
R319
30K
R318
30K
R219
30K
R218
30K
R119
30K
R118
30K
L R
SS
T T
AGND
5
6
4560
R421
5.1K
C414
R420 10/16
12K
R321
5.1K
R320
12K
C314
10/16
12K
R220
C214
10/16
R121
5.1K
1
R221
5.1K
C415
10/16
R422
10K
10K
R322
2
4
-VCC
U304
U404
-VCC
OUT1
OUT2
OUT3
OUT4
OUT5
VCC
1
2
3
4
6
9
1
2
3
4
6
9
1
2
3
4
6
9
C2
47/10
5
6
8
C254
22P
-VCC
+VCC
7
AGND
U5B
4556
1
U5A
-VCC
4
4556
R252
24K
3
2
+VCC
(+6dB)
C154
22P
R152
24K
+VCC
1
2
3
4
6
9
C1
47/10
BA6124
5 GND
7 AMP
8 IN
-VCC
OUT1
OUT2
OUT3
OUT4
OUT5
VCC
BA6124
5 GND
7 AMP
IN
BA6124
5 GND
OUT1
OUT2
OUT3
OUT4
OUT5
VCC
U204
7 AMP
8 IN
BA6124
5 GND
7 AMP
OUT1
OUT2
OUT3
OUT4
OUT5
VCC
R251
12K
C253
220P
U104
5
C153
220P
R151
12K
-16dBV
R134B
6
8 IN
10/16
C315 8
C215
10/16
R222
10K
C115
10/16
1
3
MASTER
FADER
20KAA
-VCC
C252
10/16
R134A
-10dBV
C152
10/16
R122
10K
U4B
7
U4A
-VCC
4
4560
8
C251
22P
R250
68K
3
2
C114
R120 10/16
12K
C250
220P
C150
220P
C151
22P
68K +VCC
R150
(+7.1dB)
C6
47/10
C5
47/10
D407
D406
D405
D404
D403
D307
D306
D305
D304
D303
D207
D206
D205
D204
D203
D107
D106
D105
D104
D103
H-VCC
H+VCC
+6dB
+3dB
0dB
-5dB
-10dB
HGND
CH4 BAR GRAPH
+6dB
+3dB
0dB
-5dB
-10dB
CH3 BAR GRAPH
+6dB
+3dB
0dB
-5dB
-10dB
1
U205
2
R156
16
R255
47K
R256
16
DTC314TK
3
R254
1K
CH2 BAR GRAPH
+6dB
+3dB
0dB
-5dB
-10dB
1
U105
2
DTC314TK
3
R154
1K
CH1 BAR GRAPH
C156
470/10
R155
47K
C256
470/10
R253
47K
C255
10/16
R153
47K
C155
10/16
-10dBV
J4
AGND
1
HGND
J7
W3
3
2
1
3
1
2
J6
J5
PUNCH IN/OUT
PHONES OUT
(16ohm 20mW)
JACK PCB (2/2)
W4
2
1
J3
3
2
1
STEREO OUT
-10dBV
TOP SHIELD
R
L
GND
R
L
X-24
5. CIRCUIT & BLOCK DIAGRAMS
23
X-24
24
R/P / REGULATOR PCBs
TAPE OUT
-10dBV
TRK4 TRK3 TRK2 TRK1
RRRR
EEEEPPPP
CCCCBBBB
4 3 2 1 1 2 3 4
R/P PCB
REP EQ
TP101
C102
1/50
C107
2.2/50
5
3
C101
560P
6
R102
100K
R101
24K
1
0.0082(PP)
2
4
7 8 1
R103
22KB
1
1
4
1
6
3
R110
3.3K
5
R108
180
1
1
1
2
1
3
R113
18K
2
REP EQ
2
U104
DTC114TK
3
C106
47/10
7
3.3K
R207
3.3K
R107
3.3K
+VCC
1
0
2
J7
8 7 6 5 4 3 2 1
J4
1 2
7 8
R131
100
C114
47/10
C117
47/10
R117
2K
C115
47/10
C119
10/16
R122
6.2K
3
1
2
L103
U101A
4
3
R125
15K
R124
15K
C128
0.01(PP)
R123
36K
R134
2.2K
D103
2.2K
Q101
3
3
C201
560P
2
R202
100K
R201
24K
1
2068
C203
NON
0.0082(PP)
1
4
3
4
6
3
R210
3.3K
5
C209
1/50
R208
180
1
1
1
2
1
3
R213
18K
U204
DTC114TK
2
3
1
C206
47/10
7
C216
47/10
R218
2K
C214
47/10
1
5
C217
47/10
R217
2K
R222
6.2K
R220
4.7K
3
R219
2K
1
L203
0.0018(PP)
C223
U205
3
C307
2.2/50
3
C301
560P
6
R302
100K
R301
24K
1
C305
L301 2
0.0082(PP)
4
7 8 1
R303
22KB
1
3 R305
390K
2
REP LEV
R306
470B
1
6
1
4
1
6
3
3
R310
3.3K
C309
1/50
R308
180
1
1
5
1
2
1
3
R313
18K
U304
DTC114TK
2
3
1
C306
47/10
7
U207
DTC114TK
3
2
R318
2K
4
C314
47/10
1
5
C317
47/10
R317
2K
R320
4.7K
3
R319
2K
R235
D203
2.2K
Q201
C318
0.027(PP)
C315
47/10
3
C401
560P
2
R402
100K
R401
24K
1
2068
C403
NON
0.0082(PP)
R406
470B
1
R403
22KB
1
6
1
4
1
4
6
3
3
R410
3.3K
C409
1/50
R408
180
1
1
9
5
1
2
1
3
R413
18K
7
C416
47/10
U307
DTC114TK
3
2
R418
2K
8
4
C414
47/10
1
5
R417
2K
R420
4.7K
R419
2K
C418
0.027(PP)
3
2
5
U404
DTC114TK
2
3
R335
D303
2.2K
Q301
1
C406
47/10
D401
C412
4.7/50
1
U407
DTC114TK
3
2
1
LED
SW
PITCH
D+VCC
C20
0.01
R10
2
R22
47K
3
C21
0.01
4
P12
P13
P20
P21
P22
P23
K00
K01
K02
K03
KE0
R80
R81
R82
R83
U23
TMP47C200BN
D+VCC
C22
0.01
6
R24
47K
7
D5
C28
0.1
C23
0.01
8
R25
47K
9
10
R20
47K
PUNCH IN/OUT
R29
47K
R27
10K
R30
10K
DGND
1
X1
4MHz
2
3
U40
DTC144EK
2
1
DGND
U41
DTA144EK
1 U5
3
2
3
4
DTA144EK
1 U7
3
2
5
DTA144EK
2
R41
10K
+MVCC
2
1
R42
3.3K
-VCC
R44
OFF
3
D403
Q401
510
2
1 ON
6
5
4
7
DGND
I P R - + BA
NL
E
HA C
I Y
B
I
T
TRANSPORT
3
3
1 AGND
2
BIAS ADJ
6
1
8
TP1
C426
0.0015(PP)
7
1
C12
22/16
D+VCC
8
R50
20K
U30
DTC144EK
3
2
-VCC
DOLBY ON/OFF
1
AGND
2
C52
0.022(PP)
R51
4.7K
4
Q3
1
R12
REGULATOR PCB
R54
C50
100/10
47
C51
0.1(PP)
R52
3.3K
C55
10/16
R56
4.7K
Q2
R53
47K
D-VCC
U31
L1
150uH
R55
33K
3
T1
1
DTC144EK
2
3
DTA144EK
2
C53
0.0047(PP)
7 BGND
1
8
J11
1
2
3
4
C54
0.0047(PP)
1 U8
2
DTA144EK
1 U9
3
2
3
DTA144EK
1 U10
2
3
4
DTA144EK
1 U11
3
2
5
D-VCC
+VCC
3
1 U12
2
3
DTA144EK
1 U13
2
3
1 U14
2
1
DTA144EK
3
1 U15
2
3
DTA144EK
1 U16
2
BGND
C9
100/10
R38
10K
DTA144EK
1 U17
2
3
3
3
DTA144EK
1 U20
2
3
DTA144EK
1 U18
2
3
DTA144EK
1 U21
2
3
DTA144EK
1 U22
2
DTA144EK
AGND
DTA144EK
1 U19
2
J3
R6
22
D4
D-VCC
C7
220/10
D-VCC
DGND
E EE EA AAA P
/ / / / • • • • •
DDD DB BBBM
1 2 3 4 1 2 3 4 U
T
E
D-VCC
1 2 3 4 5 6
J5
J9
1
C S
E H
N I
T E
E L
R D
J10
U3A
1
4560
2
C5
22/16
6
R8
750
5
1
W1 1
B S
O H
T I
T E
O L
M D
T G
R N
A D
N
S
P
O
R
T
AGND
C4
100/10
3
2
1
6
5
4
7
2
7
4560
U3B
C3
100/25
1
U2
4
R7
22
D3
3
3
R5
10K
R14
4.7
-VCC
1 2 3 4 5 6 7 8 9
R2
390K
8
DGND
-VCC
J8
J1
1
3
2
POWER SW
R4
10K
C6
220/10
C8
100/10
1
2
3
4
U1
UPC2410
C2
0.01
R1
820
D+VCC
R13
4.7
W11
1
2
3
4
C1
0.01
Q1
D+VCC
DTA144EK
1 2 3 4 5 6 7 8 9
-VCC
4
1
R436
22
TP405
R432
1
1
R433
220KB
2
D+VCC
6
S2
C29
0.01
R43
3.3KB
3
R3
20K
-VCC
DGND
PITCH
ADJUST
Q4
2SK117
1
3
C425 1
220P
3
BGND
DTA144EK
1 U6
3
2
R33
47K
R40
1M
1
4
TP406
OSC LEVEL
DTA144EK
R32
10k
+MVCC
5
D-VCC
+VCC
3
J401
1
2
3
4
5
D+VCC
2
T401
2.2K
R11
1 U4
2
3
R31
47K
DGND
3
1 AGND
TP404
BIAS CURR
+MVCC
X
O DGND
U
T
3
2
X
I
N
3
1
R28
47K
C25
0.01
R21
10K
J2
1
2
1
2
3
4
5
6
7
8
40
41
17
16
15
14
13
12
11
10
9
30
21
D+VCC
R26
47K
11
RESET
DGND
C24
0.01
1
33
2
R40
R41
R42
R43
R50
R51
R52
R53
R91
R92
P10
R73
R72
R71
R70
R63
R62
R61
R60
TEST
VSS
R23
47K
5
42
VDD
2
R435
D+VCC
19
20
22
23
24
25
26
27
28
29
34
35
36
37
38
R430
10K
R434
2.2K
1
D+VCC
J6
1
2
3
4
5
6
7
8
9
10
11
12
13
1
U409
0.0018(PP)
C423
U405
R431
100
2
DTC114TK
D404
D402
A.B
REC
TRK1
TRK2
TRK3
TRK4
TRK1
TRK2
TRK3
TRK4
A.B
BIAS ADJ
C326
0.0015(PP)
7
TP306
OSC LEVEL
C428
0.01(PP)
R423
36K
TP305
R332
1
1
1
1
8
L403
R424
15K
R333
220KB
2
2
6
R429
6.2K
3
2
3
3
4
180P
R425
15K
-VCC
C325
220P
3
1
R336
22
C421
0.1/50
C422
D+VCC
R414
20K
R415
20K
4
T301
3
C420
NON
1 U406
DTC114TK
2
REP EQ
2068
C424
2.2/50
U401B
7
J301
1
2
3
4
5
1
1 U408
6
R421
22KB
C415
47/10
C413
0.22/50
C408
3900P(PP)
C417
47/10
REC LEVEL
C419
10/16
2
3
1
R422
6.2K
TP304
BIAS CURR
D+VCC
2
3
R416
240
6
R331
100
5
U309
3
+VCC
1
0
2
Dolby B
U402
HA12135AF
3
2
7 8 1
1
3 R405
390K
2
REP LEV
C410
1/50
L402
FB-7G
R409
2.2K
U401A
4
C404
220P
-VCC
C405
L401 2
1
R330
10K
2
R334
2.2K
D-VCC
REP EQ
TP401
C407
2.2/50
8
1
D304
C328
0.01(PP)
R323
36K
1
+VCC
7
2
C321
0.1/50
1
3
C226
0.0015(PP)
DTC114TK
180P
D302
C402
1/50
8
L303
R324
15K
1 AGND
BIAS ADJ
1
TP206
OSC LEVEL
0.0018(PP)
C323
U305
3
2
3
-VCC
C322
-VCC
1
3
4
U301A
R325
15K
TP205
R232
1
1
R233
220KB
2
6
4
1 U306
DTC114TK
C225
220P
3
1
R236
22
R329
6.2K
1
2068
3
1
4
1 U308
C324
2.2/50
8
2
R321
22KB
C320
NON
2
D+VCC
2
5
T201
+VCC
REC LEVEL
C319
10/16
2
3
1
R322
6.2K
J201
1
2
3
4
5
D+VCC
3
R316
240
8
R314
20K
R315
20K
C312
4.7/50
D301
C316
47/10
6
C313
0.22/50
C308
3900P(PP)
2
REP EQ
9
Dolby B
U302
HA12135AF
3
2
U301B
C304
220P
C303
NON
C310
1/50
L302
FB-7G
R309
2.2K
1
7
2068
2
R234
2.2K
1
5
TP204
BIAS CURR
2
U209
D-VCC
C302
1/50
R230
10K
D204
C228
0.01(PP)
R223
36K
D202
+VCC
1
0
2
1
180P
R224
15K
1
R231
100
2
DTC114TK
R229
6.2K
1
REP EQ
TP301
C126
0.0015(PP)
7
TP106
OSC LEVEL
3
D+VCC
2
1
8
C221
0.1/50
C222
R225
15K
-VCC
1
2068
5
C224
2.2/50
U201B
7
6
R221
22KB
C220
NON
2
1 AGND
BIAS ADJ
1 U208
2
3
1 U206
DTC114TK
C218
0.027(PP)
C215
47/10
C219
10/16
3
2
REC LEVEL
8
4
3
3
R216
240
6
R214
20K
R215
20K
C212
4.7/50
D201
+VCC
1
0
2
C213
0.22/50
C208
3900P(PP)
2
REP EQ
9
Dolby B
U202
HA12135AF
3
7 8 1
R203
22KB
1
3 R205
390K
R206
2
470B
REP LEV
1
6
1
2
U201A
4
C204
220P
-VCC
C205
L201 2
R209
2.2K
1
1
C210
1/50
L202
FB-7G
ERASE
CURR
TP105
R132
1
1
C125
220P
3
R133
220KB
2
4
6
D-VCC
REP EQ
TP201
C207
2.2/50
1
4
1
R136
22
1
8
2
5
T101
R135
U107
DTC114TK
3
2
3
J101
1
2
3
4
5
D+VCC
U109
1
+VCC
2
D104
D102
C202
1/50
R130
10K
180P
0.0018(PP)
C123
U105
1
C121
0.1/50
-VCC
C122
TP104
BIAS CURR
DTC114TK
R129
6.2K
1
2068
C120
NON
1 U106
DTC114TK
C118
0.027(PP)
D+VCC
1
2
3
1
2
1 U108
C124
2.2/50
8
R121
22KB
R120
4.7K
3
R119
2K
2
-VCC
2
+VCC
REC LEVEL
(-6.9dBV)
R118
2K
8
1
5
5 6
3
R116
240
6
4
3 4
AGND
C116
47/10
R114
20K
R115
20K
C112
4.7/50
D101
R307
C113
0.22/50
C108
3900P(PP)
1
9
3.3K
Dolby B
U102
HA12135AF
3
C109
1/50
3 R105
390K
2
REP LEV
R106
470B
1
6
3
U101B
C104
220P
C105
L101 2
7
2068
C103
NON
R109
2.2K
1
C110
1/50
L102
FB-7G
R407
C2
470/25
S1
8
AGND
D1
DC IN
(12V 600mA)
2
G
1
O
U
T
I
N
3
BLOCK DIAGRAM
LINE OUT
-10dBV
LINE IN/INSERT
-10dBV
1
INPUT
FADER
TIP: RTN
RING: SEND
LINE IN/INSERT
-10dBV
-10dBV
-10dBV
REC
A. B REC
PB
REC TRK 2
1
PAN
INPUT
FADER
2
3
REC TRK 3
REC
A. B REC
PB
4
PAN
TAPE OUT
-10dBV
INPUT
FADER
TIP: RTN
RING: SEND
PHONES OUT
BARGRAPH
REC
A. B REC
PB
REC
A. B REC
PB
4
MASTER
FADER
16 ohm 20mW
REC
A. B REC
PB
3
L
R
PAN
INPUT
FADER
TIP: RTN
RING: SEND
LINE IN/INSERT
REC TRK 1
REC
A. B REC
PB
2
TIP: RTN
RING: SEND
LINE IN/INSERT
PAN
REC
A. B REC
PB
REC TRK 4
REC
A. B REC
PB
1
2
3
4
MIC IN 1/3
-10dBV <--> -50dBV
TRIM
2
3
1
MIC IN 2/4
-10dBV <--> -50dBV
TRIM
2
3
1
X-24
25
FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021
FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A.
© PRINTED IN JAPAN JUNE 1998 8288772000