Service Manual
Model
X-24
multitracker
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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
: 8288418000 (for export & domestic model)
: 8270727003 (for USA/CND)
: 8270727006 (for EUR)
AC adaptor AD-12A
!
: 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.
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1. SPECIFICATIONS
DEFINITION
Specification Unit
Normal Fader Position
Input fader
0 dBV = 1 Vrms
At 8 ± 1 position
Condition
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)
Master fader
Condition
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
Phone (unbalanced) / XLR (balanced)
-50 ~ -10 dBV
Impedance
10 kΩ or more
LINE IN / INSERT (RCV)
Connector
Stereo phone (tip)
-10 dBV
Input level
Impedance
10 kΩ or more
Standard Output
TAPE OUT 1 ~ 4
Connector
RCA pin
Output level
-10 dBV
Load impedance
LINE OUT L, R
Connector
10 kΩ or more
RCA pin
Output level
-10 dBV
Load impedance
INSERT (SEND)
Connector
10 kΩ or more
Stereo phone (ring)
Output level
-10 dBV
Load impedance
Phones Max. Output Level
Level Indication
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.
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)
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)
MIC IN (MIC GAIN: LINE)
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MIXER SECTION (continued)
Distortion
(With 400 Hz HPF & 30 kHz LPF)
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.)
Fader Attenuation
Crosstalk
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.)
PAN Crosstalk
42 dB or more at 1 kHz (Input: MIC IN, MIC GAIN: LINE, OUT: LINE
OUT. Measure level at non-input channel.)
Click Noise
Power on / off
Other switching
Shock Noise
-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
9.5 cm/s ± 1.5 % (3000 Hz ± 45 Hz when reproducing TCW-211 test
tape.)
Wow & Flutter
PLAY
REC & PLAY
0.25 % or less (TCW-211 test tape, ANSI WTD.)
0.30 % or less (AC-514 test tape, ANSI WTD.)
Pitch Control
MIN (PITCH VR: Fully CCW)
MAX (PITCH VR: Fully CW)
Fast Winding Time (FF / RWD)
Tape Counter Deviation
Standard Level
-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.)
PLAY
-10 ± 1 dB (TCW-231 test tape)
REC & PLAY
-10 ± 1 dBV (AC-514 test tape, 1 dB or less of level difference between
channels is also required.)
Frequency response
PLAY
Test tape: SCW-977 / TCW-284F (NR: OUT)
+3 dB
-3 dB
40 Hz
400 Hz
12.5 kHz
12.5 kHz
REC & PLAY
Test tape: AC-514 (NR: OUT, recording level: 0 dB)
+3 dB
-3 dB
40 Hz
400 Hz
Test tape: AC-514 (NR: IN, recording level: -25dB)
6 dB
5 dB
250 Hz
10 kHz
12.5 kHz
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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)
Erasure Ratio
2 % or less (Input signal: 1 kHz / standard level, standard fader position,
with 400 Hz HPF & 30 kHz LPF)
67 dB or more at 1 kHz (Input signal: 1 kHz / 0 dBV, standardfader
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.)
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.)
Channel Separation
Sync Crosstalk
Bias Leakage
-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.)
-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
REC → STOP
Monitor
-30 dBVp-p or less
-20 dBVp-p or less
PLAY
-20 dBVp-p or less
Punch In / Out
Shock Noise
-30 dBVp-p or less at PLAY
-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.
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2. CONTROLS, INDICATORS & CONNECTORS
< Top Panel >
1
2
3
4
L
R
OFF ON
DOLBY NR
ON
STANDBY
DC IN
12V
LINE IN/INSERT
LINE OUT
RESET
0 0 0
-
+
MASTER
WIDE PITCH
PAN
INPUT/PLAYBACK LEVEL
-10
-10
-10
-10
5
5
5
5
0
0
0
3
3
3
3
6+
REC SEL
1
1
L
L
L
L
R
R
R
R
6+
6+
REC SEL
2
2
3
4
REC SEL
3
0
6+
REC SEL
4
REC
POWER
Auto
Bounce
REHEARSAL
DOLBY
B
NR
2/4
MIC IN
REC
PLAY
REW
FF
STOP
PAUSE
[
]
1. Master fader MASTER
2. Input/playback level control faders
10.Transport control buttons
[
]
Play button PLAY
[
]
[
]
INPUT/PLAYBACK LEVEL
Stop button STOP
[
]
[
]
]
3. Pan pot knob PAN
Fast forward button FF
[
]
[
]
4. Record track select switches REC SEL
5. Record track LED
Rewind button REW
Recording button REC
[
[
]
6. Level meter
Pause button PAUSE
[
]
[
]
7. Pitch control knob WIDE PITCH
11. Power LED POWER
[
]
[
]
8. Tape counter/reset button RESET
12. Record LED REC
[
]
9. Cassette lid/Cassette tray
13. Auto bounce on/off button Auto Bounce
14. Auto bounce LED
15. Trim knob
7
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< Front Panel >
PUNCH
IN/OUT
PHONES
(
)
2 HOT
(
)
[
]
3 COLD
1. Mic input jacks MIC IN 1/3, 2/4
[
]
2. Headphone jack PHONES
[
]
3. Punch in/out jack PUNCH IN/OUT
(
)
1 GND
< Rear Panel >
TAPE OUT
4
3
2
1
[
]
1. Line out jacks LINE OUT L, R
4. Dolby B noise reduction on/off switch
[
]
[
]
DOLBY NR ON/OFF
2. Line in/insert jacks LINE/INSERT 1, 2, 3, 4
[
]
[
]
3. Tape out jacks TAPE OUT 1, 2, 3, 4
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
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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
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.
1)
2)
3)
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.
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)
2)
Head height and tape contact adjusting jig
Torque meter
Model 9001 (P/N: 8286001000)
Cassette torque meter
Cassette torque meter
Mirror tape cassette
Test tape
TW-2231 (P/N: 8286008000): 0 ~ 200 g-cm (0 ~ 2.8 Oz-In)
TW-2111A (P/N: 8286009000): 0 ~ 100 g-cm (0 ~ 1.4 Oz-In)
TCC-902 (P/N: 8286002000)
3)
4)
Speed / Flutter (3 kHz)
Model 9152 (P/N: 82660022000)
Also 3150 Hz test tape for Wow & Flutter measurement is
recommended.
Reference playback level
Playback frequency response
Blank tape
TCW-231 (P/N: 8266002000)
TCW-284F (P/N: 8266003000)
C-90 or shorter tape, TYPE II / HIGH position
General type
5)
6)
Audio oscillator
7)
8)
Frequency counter
Bandpass filter
General type
General type
9)
AC voltmeter
Oscilloscope
Wow & Flutter meter
Distortion meter
Frequency counter
Stereo type is recommended.
General type
General type
General type
General type
10)
11)
12)
13)
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3-3. Tape Transport Mechanical Data
3-3-1. Reel torque
1) PLAY mode (TW-2111A)
Supply: 1.5 ~ 6 g-cm
Takeup: 20 ~ 70 g-cm
FF /REW: 60 ~ 120 g-cm
2) FF/REW mode (TW-2231)
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:
Wow & Flutter:
3000 Hz ± 30 Hz at both BOT (beginning of tape) and EOT (end of tape) positions
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.
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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:
Track 3:
Track 4:
Adjust R233 so that the voltage at TP204 is 60 mV.
Adjust R333 so that the voltage at TP304 is 60 mV.
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.
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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 no-
signal 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
3
4
2
1 and 3
2 and 4
3
4) If the level goes down by more than 1 dB, check the tape running path again.
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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:
1 ~ 20 kHz:
-25 dBV or less
-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 dBVp-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.
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3-20. Table of Adjusting Items
Adjusting Item
Tape speed
Measuring Point
TAPE OUT
Adjusting Point
R43 (R/P)
Ref. Clause (page)
3-7 (P10)
Playback level calibration
Playback frequency response calibration
TAPE OUT 1 ~ 4
TAPE OUT 1 ~ 4
TP106 ~ TP406
TP105 ~ TP405
TP104 ~ 404
R106 ~ R406 (R/P)
R103 ~ R403 (R/P)
T101 ~ 401 (R/P)
3-8 (P10 ~ 11)
3-9 (P11)
Erase current adjustment
3-10 (P11)
Coarse bias adjustment
Record level calibration
Overall frequency response adjustment
R133 ~ 433
R121 ~ 421
R133 ~ 433
3-11 (P11)
3-12 (P11)
3-13 (P12)
TAPE OUT 1 ~ 4
TAPE OUT 1 ~ 4
4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST
X-24 OVERALL EXPLODED VIEW & PARTS LIST
Ref. No.
Part No.
Description
Ref. No.
20
Part No.
Description
1
2
8216 6580 00 Sheet, meter, X-24
8212 5931 00 Cover, cassette, X-14/24
8212 6050 00 Case, top, X-24
8226 2091 01 Knob, cassette, REW, X-14/24
8226 2081 01 Knob, cassette, FF, X-14/24
8226 2111 01 Knob, cassette, STOP, X-14/24
8226 2121 01 Knob, cassette, PAUSE, X-14/24
8216 6600 00 Shield, center, X-24
21
3
22
4
8226 1590 04 Knob, fader, N7, GR
8226 1590 05 Knob, fader, N7, R
8226 2070 02 Knob, pitch, gain, N7
8226 2070 01 Knob, pitch, N7
23
5
24
6
25
8274 1340 00 PCB assy, Jack, X-24
8221 2260 00 Bracket, jack, X-24
7
26
8
8216 6490 00 Cushion, cover, X-14/24
8216 4230 00 Reflector, cassette
!
!
27
28
29
30
8274 1350 00 PCB assy, R/P, X-24
8204 0820 00 Plate, mounting, B
9
10
11
12
13
14
15
16
17
18
19
8214 2110 00 Spring, cassette, X-18/14/24
8216 6590 00 Shield, top, X-24
8212 6060 00 Case, bottom, X-24
8270 7270 03 AC adaptor, AD-12A, USA/CND
8270 7270 06 AC adaptor, AD-12A, EUR
8270 7270 07 AC adaptor, AD-12A, UK
8270 7270 10 AC adaptor, AD-12A, JPN
8274 1400 00 PCB assy, Regulator, X-24
8216 6800 00 Sheet, isolation X-24
8277 4470 15 Cable assy, 1P, earth lug, D3-8MF/F,
L150
8226 2360 01 Knob, sel, bounce, X-24
8204 0370 01 Ring, CSTW-2
8226 1620 05 Knob, volume, N7, Y
8274 1330 00 PCB assy, Mixer, X-24
8216 6610 00 Shield, bottom, X-24
8270 8240 00 Transport assy, X-24
8226 2131 01 Knob, cassette, REC, X-14/24
8226 2101 01 Knob, cassette, PLAY, X-14/24
!
31
32
33
X-24 TRANSPORT EXPLODED VIEW & PARTS LIST
Ref. No.
Part No.
Description
Ref. No.
13
Part No.
Description
8223 2770 00 Shaft, button
8216 5310 00 Belt, main
1
2
8259 0500 00 Head, erase, X-14/24
8259 0520 00 Head, R/P, 4T, N-LR44RS07, X-24
8260 4620 00 Pinch roller assy
8260 4630 00 Idler arm assy
14
15
8216 5320 00 Belt, sub
3
4
16
8216 5330 00 Belt, counter
8221 1970 00 Bracket, button
8256 1690 00 Counter
17
5
8260 4640 00 Fly wheel assy
6
8260 4650 00 Motor assy
18
19
8214 3550 00 Spring, pinch arm
8214 3560 00 Spring, FR torsion
8214 3570 00 Spring, stop/pause
8214 3580 00 Spring, safety sensor
8214 3590 00 Spring, rec lever
8214 3600 00 Spring, play lever
7
8260 4660 00 F.R. arm assy
8
8212 4930 00 Lever, REC safety
8212 4910 00 Gear, arm
20
21
9
10
11
12
8212 4920 00 Gear, FF
22
23
8253 4280 00 SW, leaf, MSW-1541XACV
8253 4290 00 SW, leaf, MSW-1716CV
24
14
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X-24
X-24 OVERALL EXPLODED VIEW
1
2
5
6
4
8
BBT 3x8 CZn
7
9
17
3
18
19
10
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
16
BBT
3x8 CZn
26
31
14
29
15
BBT 3x8 CZn
BBT 3x12 BZn
15
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X-24 TRANSPORT EXPLODED VIEW
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X-24
X-24 PCB PATTERN DRAWING
17
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• R/P / REGULATOR PCBs
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X-24
X-24 Parts List
• MIXER PCB
Ref. No.
Part No.
Description
Ref. No.
Part No.
Description
8274 1330 00 PCB assy, Mixer, X-24
8251 9680 01 Plain PCB, Mixer, X-24
R108~408 8230 1384 32 HT, carbon, 1/4W, 4.3kΩ, 5%
R109~409 8230 1383 03 HT, carbon, 1/4W, 30kΩ, 5%
R110~410 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R111~411 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R112~412 8230 1381 04 HT, carbon, 1/4W, 100kΩ, 5%
R113~413 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R114~414 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R115~415 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R116~416 8230 1382 43 HT, carbon, 1/4W, 24kΩ, 5%
R117~417 8230 1382 43 HT, carbon, 1/4W, 24kΩ, 5%
R118~418 8230 1383 03 HT, carbon, 1/4W, 30kΩ, 5%
R119~419 8230 1383 03 HT, carbon, 1/4W, 30kΩ, 5%
R120~420 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R121~421 8230 1385 12 HT, carbon, 1/4W, 5.1kΩ, 5%
R122~422 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
R125~425 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R126~426 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R127~427 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R130, 230 8240 1710 28 Pot, PI, RT14, 100kΩCC,
RK14K123, L15
B001
ICs
Ref. No.
U001
Part No.
Description
8236 5405 00 ST, analog, NJM2068M
U002~004 8236 7207 00 ST, analog, NJM4560M
U005
U006
8236 0352 03 SIP, analog, NJM4556AL
8236 7207 00 ST, analog, NJM4560M
U007~012 8236 5707 01 ST, digital, DTA144EK
U101~401 8236 5000 00 ST, digital, CMOS, 4066BF
U102~402 8236 5706 01 ST, digital, DTC144EK
U103~403 8236 5706 01 ST, digital, DTC144EK
U104~404 8236 0832 00 SIP, analog, LED driver, BA6124
U105~205 8236 5702 01 ST, digital, driver, DTC314TK
DIODEs
Ref. No.
Part No.
Description
D001~005 8234 1046 02 Opt., VT, LED, GRN,
SLR-332MC-TE7
D006
8234 1046 01 Opt., VT, LED, RED,
SLR-332VC-TE7
R131
8240 2740 03 Pot, PI, SL30, 20kΩA, RS30H111
R133~433 8240 1670 06 Pot, PI, RT09, 50kΩB, RK09K113
R134~434 8240 2740 04 Pot, PI, SL30, 20kΩAA, RS30H121
D007
8234 1046 02 Opt., VT, LED, GRN,
SLR-332MC-TE7
R135
8240 1670 08 Pot, PI, RT09, 10kΩB, RK09K113
D101~401 8234 5007 00 HT, 1SS136
D102~402 8234 5007 00 HT, 1SS136
D103~403 8234 1046 03 Opt., VT, LED, YEL,
SLR-332YC-TE7
R150, 250 8230 1386 83 HT, carbon, 1/4W, 68kΩ, 5%
R151, 250 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R152, 252 8230 1382 43 HT, carbon, 1/4W, 24kΩ, 5%
R153, 253 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R154, 254 8230 1381 02 HT, carbon, 1/4W, 1kΩ, 5%
R155, 255 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R156, 256 8230 1381 60 HT, carbon, 1/4W, 16Ω, 5%
D104~404 8234 1046 03 Opt., VT, LED, YEL,
SLR-332YC-TE7
D105~405 8234 1046 03 Opt., VT, LED, YEL,
SLR-332YC-TE7
D106~406 8234 1046 01 Opt., VT, LED, RED,
SLR-332VC-TE7
CAPACITORs
ALU = Electrolytic type
CER = Ceramic type
D107~407 8234 1046 01 Opt., VT, LED, RED,
SLR-332VC-TE7
Ref. No.
Part No.
Description
C001, 002 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C005, 006 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
RESISTORs
Ref. No.
Part No.
Description
C010
C011
C012
C013
C014
8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
8232 8012 20 VT, CER, 50V, 22pF, 5%, SL
8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
8232 8012 20 VT, CER, 50V, 22pF, 5%, SL
8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
R001~007 8230 1387 51 HT, carbon, 1/4W, 750Ω, 5%
R010~012 8230 1381 23 HT, carbon, 1/4W, 12kΩ, 5%
R013
8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R103, 203 8230 1381 02 HT, carbon, 1/4W, 1kΩ, 5%
R104, 204 8230 1381 02 HT, carbon, 1/4W, 1kΩ, 5%
R105, 205 8230 1381 04 HT, carbon, 1/4W, 100kΩ, 5%
R106, 206 8230 1381 04 HT, carbon, 1/4W, 100kΩ, 5%
R107, 207 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
C103, 203 8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME
C104, 204 8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME
C105, 205 8232 8011 00 VT, CER, 50V, 10pF, 5%, SL
C106, 206 8232 8011 00 VT, CER, 50V, 10pF, 5%, SL
19
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X-24
Ref. No.
Part No.
Description
Ref. No.
Part No.
Description
C107, 207 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C108~408 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C109~409 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
R102, 202 8230 1381 23 Resistor, HT, carbon, 1/4W,
12kΩ, 5%
C101, 201
C102, 202
E001
N/A
C110~410
C111~411
C112~412
Wire, jumper, IPS-1041-2, F5
N/A
N/A
N/A
Wire, jumper, IPS-1041-2, F5
Wire, jumper, IPS-1041-4, F10
8245 1711 03 Connector, PI, jack, 8283, 3P, WHT
8245 1712 03 Connector, PI, jack, 8283, 3P, RED
8245 1713 03 Connector, PI, jack, 8283, 3P, BLK
8245 2980 00 Connector, PL, jack, phone,
LGR4609-7000
E002
C113~413 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C114~414 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C115~415 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C150, 250 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
C151, 251 8232 8012 20 VT, CER, 50V, 22pF, 5%, SL
C152, 252 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C153, 253 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
C154, 254 8232 8012 20 VT, CER, 50V, 22pF, 5%, SL
C155, 255 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
C156, 256 8232 1424 77 VT, ALU, 10V, 470µF, 20%, SME
J001
J002
J003
J005
J006
8245 2980 00 Connector, PL, jack, phone,
LGR4609-7000
J101, 201 8245 3390 04 Connector, PL, jack, phone,
YKB21-5074
J102, 202 8245 2680 04 Connector, PL, jack, XLR31,
NC3FAHR10
MISCELLANEOUS
W004
Y901
8276 9082 20 Cable, flat, 2P, L200
Ref. No.
E001
E002
J004
Part No.
Description
8207 0122 02 Holder, cable, 2P, 51048
Wire, jumper, IPS-1041-2, F5
Wire, jumper, IPS-1041-4, F10
8245 2120 01 Connector, PL, jack, RCA, 2P, BLK
8245 5280 01 Connector, PI, jack, 1P, RT-01T-1.0B
• R/P PCB
J007
Ref. No.
Part No.
Description
8274 1350 00 PCB assy, R/P, X-24
8251 9700 01 Plain PCB, R/P, X-24
J104~404 8245 2980 00 Connector, PL, jack, phone,
LGR4609-7000
B001
S001~005 8253 1350 02 Switch, PT, tact, SOR-112HS
Y005
Y006
Y007
Y008
W001
8207 0122 09 Holder, cable, 9P, 51048
8207 0122 13 Holder, cable, 13P, 51048
8207 0122 08 Holder, cable, 8P, 51048
8207 0122 06 Holder, cable, 6P, 51048
8277 0160 15 Cable assy, shield 2C, 3P,
WHT-9073, L150
ICs
Ref. No.
U001
Part No.
Description
N/A
U002
8236 0782 06 PT, digital, driver, DTA143TS
8236 0361 00 SIP, analog, BA4560N
U003
U004~022 8236 5707 01 ST, digital, driver, DTA144EK
W002
W003
8277 0161 30 Cable assy, shield 2C, 3P,
RED-9073, L300
U023
8236 0837 00 SDI, digital, CPU, X-24,
TMP47C200BN
8277 0162 50 Cable assy, shield 2C, 3P,
BLK-9073, L500
U030, 031 8236 5706 01 ST, digital, driver, DTC144EK
U040
U041
8236 5706 01 ST, digital, driver, DTC144EK
8236 5707 01 ST, digital, driver, DTA144EK
W005
W006
W007
W008
8276 9086 25 Cable, flat, 6P, L250
8276 9093 25 Cable, flat, 13P, L250
8276 9088 25 Cable, flat, 8P, L250
8276 9089 25 Cable, flat, 9P, L250
U101~401 8236 5405 00 ST, analog, NJM2068M
U102~402 8236 0457 00 SOP, analog, HA12135AF
U104~404 8236 5701 03 ST, digital, driver, DTC114TK
U105~405 8236 5707 01 ST, digital, driver, DTA144EK
U106~406 8236 5701 03 ST, digital, driver, DTC114TK
U107~407 8236 5701 03 ST, digital, driver, DTC114TK
U108~408 8236 5701 03 ST, digital, driver, DTC114TK
U109~409 8236 4190 00 SIP, analog, head SW, BA7755A
• JACK PCB
Ref. No.
Part No.
Description
8274 1340 00 PCB assy, Mixer, X-24
8251 9681 02 Plain PCB, Jack, X-24
B001
TRANSISTORs
Ref. No.
Part No.
Description
Ref. No.
Q001
Part No.
Description
R101, 201 8230 1381 23 Resistor, HT, carbon, 1/4W,
8234 1430 00 V, NPN, 2SC3071
12kΩ, 5%
20
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X-24
Ref. No.
Q002, 003 8234 5043 03 VT, NPN, 2SC1740S, S
Q004 8234 5050 00 VT, FET, 2SK117, Y/GR/BL
Part No.
Description
Ref. No.
Part No.
Description
R102~402 8230 1381 04 HT, carbon, 1/4W, 100kΩ, 5%
R103~403 8231 5032 23 R-TRIM, PIT, carbon, 22kΩ, 637T
R105~405 8230 1383 94 HT, carbon, 1/4W, 390kΩ, 5%
R106~406 8231 5034 71 R-TRIM, PIT, carbon, 470Ω, 637T
R107~407 8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5%
R108~408 8230 1381 81 HT, carbon, 1/4W, 180Ω, 5%
R109~409 8230 1382 22 HT, carbon, 1/4W, 2.2kΩ, 5%
R110~410 8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5%
R113~413 8230 1381 83 HT, carbon, 1/4W, 18kΩ, 5%
R114~414 8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5%
R115~415 8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5%
R116~416 8230 1382 41 HT, carbon, 1/4W, 240Ω, 5%
R117~417 8230 1382 02 HT, carbon, 1/4W, 2kΩ, 5%
R118~418 8230 1382 02 HT, carbon, 1/4W, 2kΩ, 5%
R119~419 8230 1382 02 HT, carbon, 1/4W, 2kΩ, 5%
R120~420 8230 1384 72 HT, carbon, 1/4W, 4.7kΩ, 5%
R121~421 8231 5032 23 R-TRIM, PIT, carbon, 22kΩ, 637T
R122~422 8230 1386 22 HT, carbon, 1/4W, 6.2kΩ, 5%
R123~423 8230 1383 63 HT, carbon, 1/4W, 36kΩ, 5%
R124~424 8230 1381 53 HT, carbon, 1/4W, 15kΩ, 5%
R125~425 8230 1381 53 HT, carbon, 1/4W, 15kΩ, 5%
R129~429 8230 1386 22 HT, carbon, 1/4W, 6.2kΩ, 5%
R130~430 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
R131~431 8230 1381 01 HT, carbon, 1/4W, 100Ω, 5%
Q101~401 8234 5043 03 VT, NPN, 2SC1740S, S
DIODEs
Ref. No.
D001
Part No.
8234 0196 02 VT, DSK10C-BT
Wire, jumper, IPS-1041-2, F5
8234 0196 02 VT, DSK10C-BT
Description
D002
D003
D004, 005 8234 5007 00 HT, 1SS136
D101~401 8234 5007 00 HT, 1SS136
D102~402 8234 5007 00 HT, 1SS136
D103~403 8234 5007 00 HT, 1SS136
D104~404 8234 5007 00 HT, 1SS136
RESISTORs
Ref. No.
R001
Part No.
Description
8230 1388 21 HT, carbon, 1/4W, 820Ω, 5%
8230 1383 94 HT, carbon, 1/4W, 390kΩ, 5%
8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5%
R002
R003
R004, 005 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
R006. 007 8230 1382 20 HT, carbon, 1/4W, 22Ω, 5%
R008
R010
8230 1387 51 HT, carbon, 1/4W, 750Ω, 5%
8230 0510 06 V, array, 1/8W, 47kΩ-47kΩ x 5,
5%, RKC-E
R011
R012
8230 0361 03 V, array, 1/8W, 10kΩ x 4, 5%, RKC R132~432 8230 1381 09 HT, carbon, 1/4W, 1Ω, 5%
8230 0361 03 V, array, 1/8W, 10kΩ x 4, 5%, RKC R133~433 8231 5032 24 R-TRIM, PIT, carbon, 220kΩ, 637T
R013, 014 8230 1384 79 HT, carbon, 1/4W, 4.7Ω, 5%
R134~434 8230 1382 22 HT, carbon, 1/4W, 2.2kΩ, 5%
R135~435 8230 1382 22 HT, carbon, 1/4W, 2.2kΩ, 5%
R136~436 8230 1382 20 HT, carbon, 1/4W, 22Ω, 5%
R020
R021
8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
R022~026 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
R027 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
R028, 029 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
CAPACITORs
ALU = Electrolytic type
CER = Ceramic type
PES = Mylar type
R030
R031
R032
R033
R038
R040
R041
R042
R043
R044
R050
R051
R052
R053
R054
R055
R056
8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
8230 1381 05 HT, carbon, 1/4W, 1MΩ, 5%
8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5%
8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5%
8231 5033 32 R-TRIM, PIT, carbon, 3.3kΩ, 637T
8230 1385 11 HT, carbon, 1/4W, 510Ω, 5%
8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5%
8230 1384 72 HT, carbon, 1/4W, 4.7kΩ, 5%
8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5%
8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5%
8230 1384 70 HT, carbon, 1/4W, 47Ω, 5%
8230 1383 33 HT, carbon, 1/4W, 33kΩ, 5%
8230 1384 72 HT, carbon, 1/4W, 4.7kΩ, 5%
PPR = Polypropylene type
Ref. No.
C001
C002
C003
C004
C005
Part No.
Description
8232 8031 03 VT, CER, 50V, 0.01µF, YF
8232 1444 77 VT, ALU, 25V, 470µF, 20%, SME
8232 1441 07 VT, ALU, 25V, 100µF, 20%, SME
8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME
8232 1432 26 VT, ALU, 16V, 22µF, 20%, SME
C006, 007 8232 1422 27 VT, ALU, 10V, 220µF, 20%, SME
C008, 009 8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME
C012
8232 1432 26 VT, ALU, 16V, 22µF, 20%, SME
C020~025 8232 8031 03 VT, CER, 50V, 0.01µF, YF
C028
C029
C050
C051
C052
8232 8181 04 VT, CER, 25V, 0.1µF, YF
8232 8031 03 VT, CER, 50V, 0.01µF, YF
8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME
8232 9011 04 VT, PES, 50V, 0.1µF, 5%, AMZ
8232 9012 23 VT, PES, 50V, 0.022µF, 5%, AMZ
R101~401 8230 1382 43 HT, carbon, 1/4W, 24kΩ, 5%
21
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X-24
Ref. No.
C053, 054 8232 9014 72 VT, PES, 50V, 0.0047µF, 5%, AMZ
C055 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
Part No.
Description
Ref. No.
J301
Part No.
Description
8245 5472 05 Connector, PI, jack, PH, 5P, BLU
8245 5473 05 Connector, PI, jack, PH, 5P, GRN
8242 1420 00 Coil, bias, 150µH
J401
C101~401 8232 8015 61 VT, CER, 50V, 560pF, 5%, SL
L001
C102~402 8232 1461 05 VT, ALU, 50V, 1µF, 20%, SME
L101~401 8256 0660 00 Module, trap, 80kHz
L102~402 8256 0990 00 Module, MPX, XR-5/X-24
L103~403 8256 0660 00 Module, trap, 80kHz
S001, 002 8253 6520 05 SW, PL, slide, 2-2,
non-shortening, SSSU1, L09
C103~403
N/A
C104~404 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
C105~405 8232 9018 22 VT, PES, 50V, 0.0082µF, 5%, AMZ
C106~406 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C107~407 8232 1462 25 VT, ALU, 50V, 2.2µF, 20%, SME
C108~408 8232 9013 92 VT, PES, 50V, 0.0039µF, 5%, AMZ
C109~409 8232 1461 05 VT, ALU, 50V, 1µF, 20%, SME
C110~410 8232 1461 05 VT, ALU, 50V, 1µF, 20%, SME
C112~412 8232 1464 75 VT, ALU, 50V, 4.7µF, 20%, SME
C113~413 8232 1462 24 VT, ALU, 50V, 0.22µF, 20%, SME
C114~414 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C115~415 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C116~416 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C117~417 8232 1424 76 VT, ALU, 10V, 47µF, 20%, SME
C118~418 8232 9012 73 VT, PES, 50V, 0.027µF, 5%, AMZ
C119~419 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME
TP001
8276 0010 00 Pin, header
TP101~401 8276 0010 00 Pin, header
TP104~404 8276 0010 00 Pin, header
TP105~405 8276 0010 00 Pin, header
TP106~406 8276 0010 00 Pin, header
T001
8242 1250 00 Transformer, osc, main, 80kHz
T101~401 8242 2470 00 Transformer, osc, sub, 80kHz
W001
X001
8276 3640 07 Cable assy, earth lug, D3-kink, L70
8256 0980 00 Resonator, P, CER, 4MHz, EFO
• REGULATOR PCB
C120~420
N/A
Ref. No.
Part No.
Description
C121~421 8232 1461 04 VT, ALU, 50V, 0.1µF, 20%, SME
C122~422 8232 8011 81 VT, CER, 50V, 180pF, 5%, SL
C123~423 8232 9011 82 VT, PES, 50V, 0.0018µF, 5%, AMZ
C124~424 8232 1462 25 VT, ALU, 50V, 2.2µF, 20%, SME
C125~425 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL
C126~426 8233 0481 52 VT, PPR, 100V, 0.0015µF, 5%, APS
C128~428 8232 9011 03 VT, PES, 50V, 0.01µF, 5%, AMZ
8274 1400 00
8251 9700 02
PCB assy, Regulator, X-24
Plain PCB, Regulator, X-24
B001
Ref. No.
U001
Part No.
Description
8236 0449 10 IC, 220, regulator, µPC2410HF
C001, 002 8232 9011 03 Capacitor, VT, PES, 50V, 0.01µF,
AMZV
W011
Y101
8276 9084 20 Cable, flat, 4P, L200
MISCELLANEOUS
8207 0122 04 Holder, cable, 4P, 51048
Ref. No.
E001
E002
E003
E004
J001
Part No.
Description
Wire, jumper, IPS-1041-2, F5
Wire, jumper, IPS-1041-3, F7.5
Wire, jumper, IPS-1041-4, F10
Wire, jumper, IPS-1041-5, F12.5
Abbreviation
8245 5410 00 Connector, PL, jack, DC-inlet,
YKB31-0012
ST: Small Outline Package
SIP: Single In-line Package
220: TO-220 type
J002
J003
J004
8245 3080 02 Connector, PI, jack, SBRK, 2S-4
8245 5470 09 Connector, PI, jack, PH, 9P, WHT
8245 2260 01 Connector, PL, jack, RCA 4P,
YKC21-3115
SDI: Shrink DIP (dual in-line)
SOP: Small Outline Package
HT: Horizontal mount taping device
J005
J006
J007
J008
8245 3080 06 Connector, PI, jack, SBRK, 6S-4
8245 3080 13 Connector, PI, jack, SBRK, 13S-4
8245 3080 08 Connector, PI, jack, SBRK, 8S-4
8245 3080 09 Connector, PI, jack, SBRK, 9S-4
V:
Vertical mount
VT: Vertical mount Taping device
PI: Penetrate mount I form (straight)
PL: Penetrate mount L form (right angle)
PT: Penetrate mount Taping device
PIT: Penetrate mount I form Taping device
J009, 010 8245 5280 01 Connector, PI, jack, 1P,
RT-01T-1.0B
J011
J101
J201
8245 3080 04 Connector, PI, jack, SBRK, 4S-4
8245 5470 05 Connector, PI, jack, PH, 5P, WHT
8245 5471 05 Connector, PI, jack, PH, 5P, RED
22
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X-24
5. CIRCUIT & BLOCK DIAGRAMS
23
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R/P / REGULATOR PCBs
TAPE OUT
-10dBV
TRK4 TRK3 TRK2 TRK1
R
E
C
4
R
E
C
3
R
E
C
2
R
E
C
1
P
B
1
P
B
2
P
B
3
P
B
4
R/P PCB
J7
R407
R307
R207
R107
3.3K
3.3K
3.3K
3.3K
8
7
6
5
4
3
2
1
J4
1
2
3
4
5
6
7
8
AGND
R131
100
+VCC
REP EQ
1
C110
1/50
3
2
C116
1
6
1
4
1
1
1
TP101
L102
R116
240
C102
1/50
9
0
2
47/10
REC LEVEL
2
+VCC
8
FB-7G
(-6.9dBV)
R118
U108
TP104
BIAS CURR
J101
C107
1
3
6
8
C119
10/16
1
R109
2.2K
R122
6.2K
Dolby
U102
HA12135AF
B
2.2/50
5
1
3
C124
2.2/50
1
2
3
4
5
2K
R129
6.2K
DTC114TK
7
2
4
3
1
2
3
2068
3
2
6
1
R121
22KB
2068
R102
100K
C114
47/10
L103
3
C103
NON
U101B
C104
220P
C109
1/50
5
1
2
1
3
7
4
1
5
R120
4.7K
3
1
D+VCC
C117
47/10
R119
2K
R130
10K
U101A
C101
560P
2
3
R101
R117
2K
1
C105
7
8
1
6
2
4
2
5
4
1
ERASE
CURR
C120
NON
R110
3.3K
R108
180
24K
C121
D104
R113
18K
U106
DTC114TK
0.1/50
1
-VCC
C125
220P
TP105
R103
22KB
C115
47/10
C113
0.22/50
0.0082(PP)
L101
C118
0.027(PP)
R132
1
3
C122
180P
C108
3900P(PP)
U109
1
3
1
R105
2
C128
0.01(PP)
R133
390K
R125
15K
R124
15K
R123
36K
R134
2.2K
R106
470B
2
REP EQ
D+VCC
-VCC
220KB
2
R114
20K
R115
20K
T101
REP LEV
U104
C112
4.7/50
DTC114TK
0.0018(PP)
C123
D101
D102
4
6
3
2
3
1
AGND
U105
D103
R135
2.2K
1
2
3
1
2
3
U107
BIAS ADJ
C106
47/10
Q101
1
DTC114TK
3
1
2
1
C126
R136
22
0.0015(PP)
1
8
7
TP106
OSC LEVEL
D-VCC
+VCC
1
REP EQ
R231
100
+VCC
8
C210
1/50
3
2
C216
47/10
1
6
1
4
1
1
1
TP201
L202
R216
240
C202
1/50
9
0
2
REC LEVEL
2
FB-7G
U208
TP204
BIAS CURR
J201
C207
1
3
6
C219
10/16
1
R209
2.2K
R218
2K
R222
6.2K
Dolby
U202
HA12135AF
B
2.2/50
3
2
1
3
C224
2.2/50
1
2
3
4
5
R229
6.2K
DTC114TK
U201B
7
1
2
4
8
3
1
6
2068
3
2
2068
5
R221
22KB
C220
NON
R202
100K
C214
47/10
L203
3
C203
NON
U201A
4
C209
1/50
R208
180
5
1
2
1
3
7
4
1
5
R220
4.7K
3
1
D+VCC
1
C217
47/10
R219
2K
R230
C201
560P
2
3
C204
220P
10K
R201
R217
2K
1
C205
7
8
1
6
2
2
5
4
R210
3.3K
24K
-VCC
C221
D204
R213
18K
U206
DTC114TK
0.1/50
C218
0.027(PP)
1
C225
220P
TP205
R203
C215
47/10
C213
0.22/50
0.0082(PP)
L201
22KB
R232
1
1
3
C222
180P
C208
3900P(PP)
U209
3
1
R205
390K
2
C228
0.01(PP)
R233
220KB
2
R225
15K
R224
15K
R223
36K
R234
2.2K
R206
470B
2
REP EQ
D+VCC
-VCC
R214
20K
R215
20K
T201
REP LEV
U204
C212
4.7/50
DTC114TK
0.0018(PP)
C223
D201
4
3
2
3
1
AGND
U205
D203
R235
2.2K
1
2
3
1
2
3
U207
C206
47/10
Q201
1
DTC114TK
1
BIAS ADJ
3
2
6
1
D202
C226
R236
22
0.0015(PP)
1
8
7
TP206
OSC LEVEL
D-VCC
+VCC
REP EQ
R331
100
C310
1/50
3
2
C316
47/10
1
6
1
4
1
1
1
TP301
L302
R316
240
C302
1/50
9
0
2
REC LEVEL
+VCC
FB-7G
U308
TP304
J301
C307
1
6
C319
10/16
1
BIAS CURR
R309
2.2K
Dolby
U302
HA12135AF
B
R318
2K
R322
6.2K
2.2/50
5
6
1
3
2
8
C324
2.2/50
1
2
3
4
5
R329
6.2K
DTC114TK
7
2
4
3
8
3
1
2
3
2068
3
2
1
R321
22KB
2068
R302
100K
C314
47/10
L303
3
U301B
C304
220P
1
C303
NON
C309
1/50
5
1
2
1
3
7
4
1
5
R320
4.7K
3
1
D+VCC
1
C317
47/10
R319
2K
R330
C301
560P
U301A
2
3
10K
R301
R317
2K
C320
NON
1
C305
7
8
1
6
2
4
2
5
4
R310
3.3K
R308
180
24K
C321
D304
R313
18K
C318
0.027(PP)
U306
DTC114TK
0.1/50
1
-VCC
180P
C325
220P
TP305
R332
R303
C315
47/10
C313
0.22/50
0.0082(PP)
L301
22KB
3
C322
C308
3900P(PP)
U309
1
3
1
R305
2
C328
0.01(PP)
R333
220KB
2
390K
R325
15K
R324
15K
R323
36K
R334
2.2K
R306
470B
2
REP EQ
D+VCC
-VCC
R314
20K
R315
20K
T301
REP LEV
U304
C312
4.7/50
1
DTC114TK
2
3
D301
D302
0.0018(PP)
C323
4
6
3
2
U305
D303
R335
2.2K
1
3
1
2
3
U307
C306
47/10
Q301
1
DTC114TK
3
1
BIAS ADJ
2
1
C326
0.0015(PP)
R336
22
1
8
7
TP306
OSC LEVEL
D-VCC
+VCC
REP EQ
R431
100
1
AGND
+VCC
8
C410
1/50
3
2
C416
1
6
1
4
1
1
1
TP401
L402
R416
240
C402
1/50
9
0
2
47/10
REC LEVEL
C419
10/16
FB-7G
U408
TP404
J401
C407
1
3
6
1
BIAS CURR
R409
2.2K
R418
2K
R422
6.2K
Dolby
U402
HA12135AF
B
2.2/50
3
2
1
3
2
C424
1
2
3
4
5
R429
6.2K
DTC114TK
U401B
7
2.2/50
1
2
4
8
3
1
6
2068
3
2
2068
R421
22KB
R402
100K
R401
24K
C414
47/10
L403
3
C403
NON
U401A
4
C409
1/50
5
1
1
3
7
4
1
5
R420
4.7K
5
1
D+VCC
1
C417
47/10
R419
2K
R430
2
C401
560P
2
3
C404
220P
10K
R417
2K
1
C405
7
8
1
6
3
2
2
5
4
C420
NON
R410
3.3K
R408
180
C418
0.027(PP)
-VCC
C421
D404
R413
18K
U406
1
0.1/50
1
C425
220P
TP405
R403
DTC114TK
C415
47/10
C413
0.22/50
L401
0.0082(PP)
22KB
R432
1
1
3
C422
180P
C408
3900P(PP)
U409
3
1
R405
390K
2
C428
0.01(PP)
R433
220KB
2
R425
15K
R424
15K
R423
36K
R434
2.2K
R406
470B
2
REP EQ
D+VCC
-VCC
R414
20K
R415
20K
T401
REP LEV
U404
C412
4.7/50
DTC114TK
2
D401
D402
0.0018(PP)
C423
4
3
2
3
1
AGND
U405
D403
R435
2.2K
1
3
1
2
3
U407
C406
47/10
Q401
1
DTC114TK
3
1
BIAS ADJ
2
6
1
TP1
C426
0.0015(PP)
R436
22
D+VCC
42
1
8
7
J6
D+VCC
3
1
1
19
20
22
23
24
25
26
27
28
29
34
35
36
37
38
TP406
OSC LEVEL
A.B
R11
P12
P13
P20
P21
P22
P23
K00
K01
K02
K03
KE0
R80
R81
R82
R83
VDD
R40
2
2
REC
3
1
D-VCC
U4
2
TRK1
TRK2
TRK3
TRK4
TRK1
TRK2
TRK3
TRK4
A.B
LED
SW
4
1
2
BGND
5
+VCC
D+VCC
R41
R42
R43
R50
R51
R52
R53
R91
R92
P10
R73
R72
R71
R70
R63
R62
R61
R60
TEST
VSS
R3
20K
C12
22/16
6
3
DTA144EK
3
4
5
C53
0.0047(PP)
7
D+VCC
3
4
1
OFF
3
6
2
1
ON
8
D+VCC
8
7
BGND
U5
2
C20
0.01
3
8
R10
5
-VCC
6
4
1
9
6
7
S2
10
11
12
13
7
8
DTA144EK
2
3
R22
R50
20K
L1
150uH
C52
0.022(PP)
1
5
4
-VCC
U6
2
R55
33K
47K
U30
DTC144EK
U23
2
4
40
41
17
16
15
14
13
12
11
10
9
3
R51
4.7K
TMP47C200BN
Q3
DOLBY ON/OFF
PITCH
C21
0.01
DTA144EK
1
AGND
3
2
T1
REGULATOR PCB
1
U7
2
R54
47
3
1
C55
10/16
Q2
R56
4.7K
R23
R53
DTC144EK
2
47K
47K
5
7
DTA144EK
3
D+VCC
D-VCC
C51
0.1(PP)
U1
W11
J11
C22
0.01
UPC2410
1
1
U31
C54
0.0047(PP)
C50
100/10
R52
3.3K
1
2
3
4
1
2
3
4
1
R12
O
C2
2
3
4
5
2
3
4
U
R24
0.01
30
21
1
2
U8
2
D5
33
C28
0.1
T
47K
G
3
6
RESET
I
C1
0.01
+MVCC
Q1
N
C23
0.01
DTA144EK
D-VCC
X
O
U
T
X
DGND
1
3
U9
2
I
3
D+VCC
R25
N
R1
820
47K
8
9
DGND
3
3
2
DTA144EK
+VCC
D+VCC
R13
4.7
1
1
1
J1
U10
2
U12
2
POWER SW
C24
0.01
D+VCC
3
3
3
3
1
3
2
1
1
3
DC IN
(12V 600mA)
R4
10K
R28
47K
DTA144EK
C6
220/10
X1
4MHz
DTA144EK
1
D3
C3
R2
R26
1
1
C8
100/10
3
6
2
5
1
4
U11
2
U13
2
S1
100/25
390K
47K
10
11
3
8
1
R29
47K
R6
U3A
1
3
2
3
2
7
8
D1
R20
47K
DTA144EK
22
C25
0.01
2
DGND
DTA144EK
D4
4560
1
U2
U14
2
R30
10K
R21
10K
R27
J2
1
2
AGND
BGND
C9
100/10
DGND
4
C5
22/16
10K
DTA144EK
DGND
1
U15
2
R31
47K
C2
PUNCH IN/OUT
3
3
3
3
D-VCC
C7
220/10
AGND
R38
10K
R7
22
6
5
470/25
R8
750
DTA144EK
7
4560
R32
10k
1
U16
2
U3B
DGND
1
-VCC
U19
2
C4
100/10
R33
47K
DTA144EK
R5
3
3
3
3
R14
4.7
10K
1
U17
2
DTA144EK
1
U20
2
DTA144EK
R40
1M
+MVCC
U41
PITCH
ADJUST
1
-VCC
D-VCC
U18
2
DTA144EK
U40
DTC144EK
2
3
+MVCC
C29
1
U21
2
Q4
DTA144EK
1
1
2SK117
3
2
3
2
R42
3.3K
R43
3.3KB
DTA144EK
0.01
R41
10K
1
1
U22
2
DTA144EK
-VCC
DGND
D-VCC
R44
510
DGND
DTA144EK
AGND
J9
J10
W1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
1
1
1
J5
J3
J8
-VCC
DGND
I
P
R
-
+
B
A
E
E
E
E
A
A
A
A
P
C
E
N
T
S
H
I
B
O
T
S
H
I
T
G
N
D
N
H
I
L
A
Y
E
/
/
/
/
•
•
•
•
•
R
A
N
S
P
O
R
T
C
D
1
D
2
D
3
D
4
B
1
B
2
B
3
B
4
M
U
T
E
L
D
T
E
L
D
B
I
E
R
O
M
E
T
TRANSPORT
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BLOCK DIAGRAM
LINE OUT
-10dBV
PAN
PAN
REC
A. B REC
PB
LINE IN/INSERT
L
1
-10dBV
R
INPUT
TIP: RTN
RING: SEND
REC
A. B REC
PB
FADER
MASTER
FADER
REC TRK 1
REC TRK 2
REC TRK 3
REC TRK 4
PHONES OUT
16 ohm 20mW
REC
A. B REC
PB
LINE IN/INSERT
2
-10dBV
INPUT
FADER
BARGRAPH
TIP: RTN
RING: SEND
REC
A. B REC
PB
1
2
3
4
PAN
PAN
REC
A. B REC
PB
LINE IN/INSERT
3
-10dBV
INPUT
FADER
TIP: RTN
RING: SEND
REC
A. B REC
PB
REC
A. B REC
PB
TAPE OUT
LINE IN/INSERT
4
-10dBV
-10dBV
INPUT
FADER
TIP: RTN
RING: SEND
REC
A. B REC
PB
1
2
3
4
MIC IN 1/3
TRIM
2
1
-10dBV <--> -50dBV
3
MIC IN 2/4
-10dBV <--> -50dBV
TRIM
2
1
3
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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
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