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Service Manual
Model
multitracker
X-24
CAUTION: CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SOLT, FULLY INSERT.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION:
POUR ÉVITER LES CHOCS ÉLECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER 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. 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. 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.
10.
11.
12.
6.
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.
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.
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1. SPECIFICATIONS
DEFINITION
Specification Unit Normal Fader Position Input 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)
Master fader Condition
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
Phone (unbalanced) / XLR (balanced) -50 ~ -10 dBV 10 k or more Stereo phone (tip) -10 dBV 10 k or more
RCA pin -10 dBV 10 k or more RCA pin -10 dBV 10 k or more Stereo phone (ring) -10 dBV 10 k or more 20 mW or more (1 kHz, 16 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 ) 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)
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 resistor) MIC IN (MIC GAIN: MIC) MIC IN (MIC GAIN: LINE)
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X-24
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 / 16.) 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.)
Fader Attenuation Crosstalk PAN Crosstalk Click Noise Power on / off Other switching Shock Noise
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
400 Hz
12.5 kHz
REC & PLAY
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)
5 dB 250 Hz 10 kHz
6 dB
12.5 kHz
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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.
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2. CONTROLS, INDICATORS & CONNECTORS
< Top Panel >
1
2
3 LINE IN/INSERT
4
L
R LINE OUT OFF ON STANDBY ON DOLBY NR DC IN 12V
RESET
MASTER
PAN INPUT/PLAYBACK LEVEL REC SEL -10 5 0 3
-
+
000
WIDE PITCH
6+
1
L R
1
REC SEL
-10
5
0
3
6+
2
L R
2
REC SEL
-10
5
0
3
6+
3
L R
3
REC SEL
-10
5
0
3
6+
4
L R
4
REC POWER
Auto Bounce
1/3
MIC IN
2/4
REHEARSAL
DOLBY B NR
REC
PLAY
REW
FF
STOP
PAUSE
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
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
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< 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
TAPE OUT 3 2
1
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]
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
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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
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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 300 ~ 500 g
3-3-2. Pinch roller pressure
Pull force
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 k) 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 k) 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 k) 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 k) 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.
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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: -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.
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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. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Part No. 8216 6580 00 8212 5931 00 8212 6050 00 8226 1590 04 8226 1590 05 8226 2070 02 8226 2070 01 8216 6490 00 8216 4230 00 8214 2110 00 8216 6590 00 8226 2360 01 8204 0370 01 8226 1620 05 8274 1330 00 8216 6610 00 8270 8240 00 8226 2131 01 8226 2101 01 Description Sheet, meter, X-24 Cover, cassette, X-14/24 Case, top, X-24 Knob, fader, N7, GR Knob, fader, N7, R Knob, pitch, gain, N7 Knob, pitch, N7 Cushion, cover, X-14/24 Reflector, cassette Spring, cassette, X-18/14/24 Shield, top, X-24 Knob, sel, bounce, X-24 Ring, CSTW-2 Knob, volume, N7, Y PCB assy, Mixer, X-24 Shield, bottom, X-24 Transport assy, X-24 Knob, cassette, REC, X-14/24 Knob, cassette, PLAY, X-14/24
! ! !
Ref. No. 20 21 22 23 24 25 26 27 28 29 30
Part No. 8226 2091 01 8226 2081 01 8226 2111 01 8226 2121 01 8216 6600 00 8274 1340 00 8221 2260 00 8274 1350 00 8204 0820 00 8212 6060 00 8270 7270 03 8270 7270 06 8270 7270 07
Description Knob, cassette, REW, X-14/24 Knob, cassette, FF, X-14/24 Knob, cassette, STOP, X-14/24 Knob, cassette, PAUSE, X-14/24 Shield, center, X-24 PCB assy, Jack, X-24 Bracket, jack, X-24 PCB assy, R/P, X-24 Plate, mounting, B Case, bottom, X-24 AC adaptor, AD-12A, USA/CND AC adaptor, AD-12A, EUR AC adaptor, AD-12A, UK AC adaptor, AD-12A, JPN PCB assy, Regulator, X-24 Sheet, isolation X-24 Cable assy, 1P, earth lug, D3-8MF/F, L150
31 32 33
8270 7270 10 8274 1400 00 8216 6800 00 8277 4470 15
X-24 TRANSPORT EXPLODED VIEW & PARTS LIST
Ref. No. 1 2 3 4 5 6 7 8 9 10 11 12 Part No. 8259 0500 00 8259 0520 00 8260 4620 00 8260 4630 00 8260 4640 00 8260 4650 00 8260 4660 00 8212 4930 00 8212 4910 00 8212 4920 00 8253 4280 00 8253 4290 00 Description Head, erase, X-14/24 Head, R/P, 4T, N-LR44RS07, X-24 Pinch roller assy Idler arm assy Fly wheel assy Motor assy F.R. arm assy Lever, REC safety Gear, arm Gear, FF SW, leaf, MSW-1541XACV SW, leaf, MSW-1716CV Ref. No. Part No. 13 8223 2770 00 14 15 16 17 18 19 20 21 22 23 24 8216 5310 00 8216 5320 00 8216 5330 00 8221 1970 00 8256 1690 00 8214 3550 00 8214 3560 00 8214 3570 00 8214 3580 00 8214 3590 00 8214 3600 00 Description Shaft, button Belt, main Belt, sub Belt, counter Bracket, button Counter Spring, pinch arm Spring, FR torsion Spring, stop/pause Spring, safety sensor Spring, rec lever Spring, play lever
14
X-24
X-24 OVERALL EXPLODED VIEW
1 2
5 6 4
BBT 3x8 CZn
8 7 9
17 3 18 10 19
20
21
22
23
BBT 3x8 CZn
11
BBT 3x8 CZn
32 30
BBT 3x8 CZn
BBT 3x8 CZn
28
13
12
BBT 3x8 CZn
24 33 27
BBT 3x8 CZn
BBT 3x8 CZn BBT 3x8 CZn
25 26 31
16
14
29
15
BBT 3x8 CZn BBT 3x12 BZn
15
16
X-24
X-24 TRANSPORT EXPLODED VIEW
X-24
X-24 PCB PATTERN DRAWING
· MIXER / JACK PCBs
17
18
X-24
· R/P / REGULATOR PCBs
X-24
X-24 Parts List
· MIXER PCB
Ref. No. B001 Part No. 8274 1330 00 8251 9680 01 Description PCB assy, Mixer, X-24 Plain PCB, Mixer, X-24 ICs Ref. No. U001 Part No. 8236 5405 00 Description ST, analog, NJM2068M ST, analog, NJM4560M SIP, analog, NJM4556AL ST, analog, NJM4560M ST, digital, DTA144EK ST, digital, CMOS, 4066BF ST, digital, DTC144EK ST, digital, DTC144EK SIP, analog, LED driver, BA6124 ST, digital, driver, DTC314TK DIODEs Description Opt., VT, LED, GRN, SLR-332MC-TE7 Opt., VT, LED, RED, SLR-332VC-TE7 Opt., VT, LED, GRN, SLR-332MC-TE7 HT, 1SS136 HT, 1SS136 Opt., VT, LED, YEL, SLR-332YC-TE7 Opt., VT, LED, YEL, SLR-332YC-TE7 Opt., VT, LED, YEL, SLR-332YC-TE7 Opt., VT, LED, RED, SLR-332VC-TE7 Opt., VT, LED, RED, SLR-332VC-TE7 Ref. No. Ref. No. Part No. Description HT, carbon, 1/4W, 4.3k, 5% HT, carbon, 1/4W, 30k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 100k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 24k, 5% HT, carbon, 1/4W, 24k, 5% HT, carbon, 1/4W, 30k, 5% HT, carbon, 1/4W, 30k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 5.1k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 12k, 5% Pot, PI, RT14, 100kCC, RK14K123, L15 Pot, PI, SL30, 20kA, RS30H111 Pot, PI, RT09, 50kB, RK09K113 Pot, PI, SL30, 20kAA, RS30H121 Pot, PI, RT09, 10kB, RK09K113 HT, carbon, 1/4W, 68k, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 24k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 1k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 16, 5% R108~408 8230 1384 32 R109~409 8230 1383 03 R110~410 8230 1384 73 R111~411 8230 1381 23 R112~412 8230 1381 04 R113~413 8230 1381 23 R114~414 8230 1381 23 R115~415 8230 1384 73 R116~416 8230 1382 43 R117~417 8230 1382 43 R118~418 8230 1383 03 R119~419 8230 1383 03 R120~420 8230 1381 23 R121~421 8230 1385 12 R122~422 8230 1381 03 R125~425 8230 1384 73 R126~426 8230 1381 23 R127~427 8230 1381 23 R130, 230 8240 1710 28 R131 8240 2740 03 R133~433 8240 1670 06 R134~434 8240 2740 04 R135 8240 1670 08 R150, 250 8230 1386 83 R151, 250 8230 1381 23 R152, 252 8230 1382 43 R153, 253 8230 1384 73 R154, 254 8230 1381 02 R155, 255 8230 1384 73 R156, 256 8230 1381 60
U002~004 8236 7207 00 U005 8236 0352 03 U006 8236 7207 00 U007~012 8236 5707 01 U101~401 8236 5000 00 U102~402 8236 5706 01 U103~403 8236 5706 01 U104~404 8236 0832 00 U105~205 8236 5702 01
Ref. No.
Part No.
D001~005 8234 1046 02 D006 D007 8234 1046 01 8234 1046 02
D101~401 8234 5007 00 D102~402 8234 5007 00 D103~403 8234 1046 03 D104~404 8234 1046 03 D105~405 8234 1046 03 D106~406 8234 1046 01 D107~407 8234 1046 01
CAPACITORs ALU = Electrolytic type Part No. CER = Ceramic type Description VT, ALU, 10V, 47µF, 20%, SME VT, ALU, 10V, 47µF, 20%, SME VT, CER, 50V, 220pF, 5%, SL VT, CER, 50V, 22pF, 5%, SL VT, CER, 50V, 220pF, 5%, SL VT, CER, 50V, 22pF, 5%, SL VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 10V, 100µF, 20%, SME VT, ALU, 10V, 100µF, 20%, SME VT, CER, 50V, 10pF, 5%, SL VT, CER, 50V, 10pF, 5%, SL
RESISTORs Ref. No. Part No. R001~007 8230 1387 51 R010~012 8230 1381 23 R013 8230 1384 73 R103, 203 8230 1381 02 R104, 204 8230 1381 02 R105, 205 8230 1381 04 R106, 206 8230 1381 04 R107, 207 8230 1384 73 Description HT, carbon, 1/4W, 750, 5% HT, carbon, 1/4W, 12k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 1k, 5% HT, carbon, 1/4W, 1k, 5% HT, carbon, 1/4W, 100k, 5% HT, carbon, 1/4W, 100k, 5% HT, carbon, 1/4W, 47k, 5%
C001, 002 8232 1424 76 C005, 006 8232 1424 76 C010 C011 C012 C013 8232 8012 21 8232 8012 20 8232 8012 21 8232 8012 20
C014 8232 1431 06 C103, 203 8232 1421 07 C104, 204 8232 1421 07 C105, 205 8232 8011 00 C106, 206 8232 8011 00
19
X-24
Ref. No.
Part No.
Description VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 16V, 10µF, 20%, SME Wire, jumper, IPS-1041-2, F5 N/A N/A VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 16V, 10µF, 20%, SME VT, CER, 50V, 220pF, 5%, SL VT, CER, 50V, 22pF, 5%, SL VT, ALU, 16V, 10µF, 20%, SME VT, CER, 50V, 220pF, 5%, SL VT, CER, 50V, 22pF, 5%, SL VT, ALU, 16V, 10µF, 20%, SME VT, ALU, 10V, 470µF, 20%, SME
Ref. No.
Part No.
Description Resistor, HT, carbon, 1/4W, 12k, 5% N/A N/A Wire, jumper, IPS-1041-2, F5 Wire, jumper, IPS-1041-4, F10
C107, 207 8232 1431 06 C108~408 8232 1431 06 C109~409 8232 1431 06 C110~410 C111~411 C112~412 C113~413 8232 1431 06 C114~414 8232 1431 06 C115~415 8232 1431 06 C150, 250 8232 8012 21 C151, 251 8232 8012 20 C152, 252 8232 1431 06 C153, 253 8232 8012 21 C154, 254 8232 8012 20 C155, 255 8232 1431 06 C156, 256 8232 1424 77
R102, 202 8230 1381 23 C101, 201 C102, 202 E001 E002 J001 J002 J003 J005 J006 J101, 201 J102, 202 W004 Y901 8245 1711 03 8245 1712 03 8245 1713 03 8245 2980 00 8245 2980 00 8245 3390 04 8245 2680 04 8276 9082 20 8207 0122 02
Connector, PI, jack, 8283, 3P, WHT Connector, PI, jack, 8283, 3P, RED Connector, PI, jack, 8283, 3P, BLK Connector, PL, jack, phone, LGR4609-7000 Connector, PL, jack, phone, LGR4609-7000 Connector, PL, jack, phone, YKB21-5074 Connector, PL, jack, XLR31, NC3FAHR10 Cable, flat, 2P, L200 Holder, cable, 2P, 51048
MISCELLANEOUS Ref. No. E001 E002 J004 J007 J104~404 Part No. Description Wire, jumper, IPS-1041-2, F5 Wire, jumper, IPS-1041-4, F10 Connector, PL, jack, RCA, 2P, BLK Connector, PI, jack, 1P, RT-01T-1.0B Connector, PL, jack, phone, LGR4609-7000 Switch, PT, tact, SOR-112HS Holder, cable, 9P, 51048 Holder, cable, 13P, 51048 Holder, cable, 8P, 51048 Holder, cable, 6P, 51048 Cable assy, shield 2C, 3P, WHT-9073, L150 Cable assy, shield 2C, 3P, RED-9073, L300 Cable assy, shield 2C, 3P, BLK-9073, L500 Cable, flat, 6P, L250 Cable, flat, 13P, L250 Cable, flat, 8P, L250 Cable, flat, 9P, L250
8245 2120 01 8245 5280 01 8245 2980 00
· R/P PCB
Ref. No. B001 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. N/A 8236 0782 06 8236 0361 00 PT, digital, driver, DTA143TS SIP, analog, BA4560N ST, digital, driver, DTA144EK SDI, digital, CPU, X-24, TMP47C200BN ST, digital, driver, DTC144EK ST, digital, driver, DTC144EK ST, digital, driver, DTA144EK ST, analog, NJM2068M SOP, analog, HA12135AF ST, digital, driver, DTC114TK ST, digital, driver, DTA144EK ST, digital, driver, DTC114TK ST, digital, driver, DTC114TK ST, digital, driver, DTC114TK SIP, analog, head SW, BA7755A Description
S001~005 8253 1350 02 Y005 Y006 Y007 Y008 W001 W002 W003 W005 W006 W007 W008 8207 0122 09 8207 0122 13 8207 0122 08 8207 0122 06 8277 0160 15 8277 0161 30 8277 0162 50 8276 9086 25 8276 9093 25 8276 9088 25 8276 9089 25
U004~022 8236 5707 01 U023 8236 0837 00 U030, 031 8236 5706 01 U040 U041 8236 5706 01 8236 5707 01
U101~401 8236 5405 00 U102~402 8236 0457 00 U104~404 8236 5701 03 U105~405 8236 5707 01 U106~406 8236 5701 03 U107~407 8236 5701 03 U108~408 8236 5701 03 U109~409 8236 4190 00
· JACK PCB
Ref. No. B001 Ref. No. Part No. 8274 1340 00 8251 9681 02 Part No. Description PCB assy, Mixer, X-24 Plain PCB, Jack, X-24 Description Resistor, HT, carbon, 1/4W, 12k, 5%
TRANSISTORs Ref. No. Q001 Part No. 8234 1430 00 Description V, NPN, 2SC3071
R101, 201 8230 1381 23
20
X-24
Ref. No. Part No. Q002, 003 8234 5043 03 Q004 8234 5050 00 Q101~401 8234 5043 03 Ref. No. D001 D002 Part No. 8234 0196 02
Description VT, NPN, 2SC1740S, S VT, FET, 2SK117, Y/GR/BL VT, NPN, 2SC1740S, S DIODEs Description VT, DSK10C-BT Wire, jumper, IPS-1041-2, F5 VT, DSK10C-BT HT, 1SS136 HT, 1SS136 HT, 1SS136 HT, 1SS136 HT, 1SS136
Ref. No. Part No. R102~402 8230 1381 04 R103~403 8231 5032 23 R105~405 8230 1383 94 R106~406 8231 5034 71 R107~407 8230 1383 32 R108~408 8230 1381 81 R109~409 8230 1382 22 R110~410 8230 1383 32 R113~413 8230 1381 83 R114~414 8230 1382 03 R115~415 8230 1382 03 R116~416 8230 1382 41 R117~417 8230 1382 02 R118~418 8230 1382 02 R119~419 8230 1382 02 R120~420 8230 1384 72 R121~421 8231 5032 23 R122~422 8230 1386 22 R123~423 8230 1383 63 R124~424 8230 1381 53 R125~425 8230 1381 53 R129~429 8230 1386 22 R130~430 8230 1381 03 R131~431 8230 1381 01 R132~432 8230 1381 09 R133~433 8231 5032 24 R134~434 8230 1382 22 R135~435 8230 1382 22 R136~436 8230 1382 20
Description HT, carbon, 1/4W, 100k, 5% R-TRIM, PIT, carbon, 22k, 637T HT, carbon, 1/4W, 390k, 5% R-TRIM, PIT, carbon, 470, 637T HT, carbon, 1/4W, 3.3k, 5% HT, carbon, 1/4W, 180, 5% HT, carbon, 1/4W, 2.2k, 5% HT, carbon, 1/4W, 3.3k, 5% HT, carbon, 1/4W, 18k, 5% HT, carbon, 1/4W, 20k, 5% HT, carbon, 1/4W, 20k, 5% HT, carbon, 1/4W, 240, 5% HT, carbon, 1/4W, 2k, 5% HT, carbon, 1/4W, 2k, 5% HT, carbon, 1/4W, 2k, 5% HT, carbon, 1/4W, 4.7k, 5% R-TRIM, PIT, carbon, 22k, 637T HT, carbon, 1/4W, 6.2k, 5% HT, carbon, 1/4W, 36k, 5% HT, carbon, 1/4W, 15k, 5% HT, carbon, 1/4W, 15k, 5% HT, carbon, 1/4W, 6.2k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 100, 5% HT, carbon, 1/4W, 1, 5% R-TRIM, PIT, carbon, 220k, 637T HT, carbon, 1/4W, 2.2k, 5% HT, carbon, 1/4W, 2.2k, 5% HT, carbon, 1/4W, 22, 5%
D003 8234 0196 02 D004, 005 8234 5007 00 D101~401 8234 5007 00 D102~402 8234 5007 00 D103~403 8234 5007 00 D104~404 8234 5007 00
RESISTORs Ref. No. R001 R002 R003 Part No. 8230 1388 21 8230 1383 94 8230 1382 03 Description HT, carbon, 1/4W, 820, 5% HT, carbon, 1/4W, 390k, 5% HT, carbon, 1/4W, 20k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 22, 5% HT, carbon, 1/4W, 750, 5% V, array, 1/8W, 47k-47k x 5, 5%, RKC-E V, array, 1/8W, 10k x 4, 5%, RKC V, array, 1/8W, 10k x 4, 5%, RKC HT, carbon, 1/4W, 4.7, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 1M, 5% HT, carbon, 1/4W, 10k, 5% HT, carbon, 1/4W, 3.3k, 5% R-TRIM, PIT, carbon, 3.3k, 637T HT, carbon, 1/4W, 510, 5% HT, carbon, 1/4W, 20k, 5% HT, carbon, 1/4W, 4.7k, 5% HT, carbon, 1/4W, 3.3k, 5% HT, carbon, 1/4W, 47k, 5% HT, carbon, 1/4W, 47, 5% HT, carbon, 1/4W, 33k, 5% HT, carbon, 1/4W, 4.7k, 5% HT, carbon, 1/4W, 24k, 5%
R004, 005 8230 1381 03 R006. 007 8230 1382 20 R008 R010 R011 8230 1387 51 8230 0510 06 8230 0361 03
R012 8230 0361 03 R013, 014 8230 1384 79 R020 R021 8230 1384 73 8230 1381 03
R022~026 8230 1384 73 R027 8230 1381 03 R028, 029 8230 1384 73 R030 8230 1381 03 R031 R032 R033 R038 R040 R041 R042 R043 R044 R050 R051 R052 R053 R054 R055 R056 8230 1384 73 8230 1381 03 8230 1384 73 8230 1381 03 8230 1381 05 8230 1381 03 8230 1383 32 8231 5033 32 8230 1385 11 8230 1382 03 8230 1384 72 8230 1383 32 8230 1384 73 8230 1384 70 8230 1383 33 8230 1384 72
CAPACITORs ALU = Electrolytic type CER = Ceramic type PES = Mylar type PPR = Polypropylene type Ref. No. C001 C002 C003 C004 C005 Part No. 8232 8031 03 8232 1444 77 8232 1441 07 8232 1421 07 8232 1432 26 Description VT, CER, 50V, 0.01µF, YF VT, ALU, 25V, 470µF, 20%, SME VT, ALU, 25V, 100µF, 20%, SME VT, ALU, 10V, 100µF, 20%, SME VT, ALU, 16V, 22µF, 20%, SME VT, ALU, 10V, 220µF, 20%, SME VT, ALU, 10V, 100µF, 20%, SME VT, ALU, 16V, 22µF, 20%, SME VT, CER, 50V, 0.01µF, YF VT, CER, 25V, 0.1µF, YF VT, CER, 50V, 0.01µF, YF VT, ALU, 10V, 100µF, 20%, SME VT, PES, 50V, 0.1µF, 5%, AMZ VT, PES, 50V, 0.022µF, 5%, AMZ
C006, 007 8232 1422 27 C008, 009 8232 1421 07 C012 8232 1432 26 C020~025 8232 8031 03 C028 C029 C050 C051 C052 8232 8181 04 8232 8031 03 8232 1421 07 8232 9011 04 8232 9012 23
R101~401 8230 1382 43
21
X-24
Ref. No. Part No. C053, 054 8232 9014 72 C055 8232 1431 06 C101~401 8232 8015 61 C102~402 8232 1461 05 C103~403 C104~404 8232 8012 21 C105~405 8232 9018 22 C106~406 8232 1424 76 C107~407 8232 1462 25 C108~408 8232 9013 92 C109~409 8232 1461 05 C110~410 8232 1461 05 C112~412 8232 1464 75 C113~413 8232 1462 24 C114~414 8232 1424 76 C115~415 8232 1424 76 C116~416 8232 1424 76 C117~417 8232 1424 76 C118~418 8232 9012 73 C119~419 8232 1431 06 C120~420 C121~421 8232 1461 04 C122~422 8232 8011 81 C123~423 8232 9011 82 C124~424 8232 1462 25 C125~425 8232 8012 21 C126~426 8233 0481 52 C128~428 8232 9011 03
Description VT, PES, 50V, 0.0047µF, 5%, AMZ VT, ALU, 16V, 10µF, 20%, SME VT, CER, 50V, 560pF, 5%, SL VT, ALU, 50V, 1µF, 20%, SME N/A VT, CER, 50V, 220pF, 5%, SL VT, PES, 50V, 0.0082µF, 5%, AMZ VT, ALU, 10V, 47µF, 20%, SME VT, ALU, 50V, 2.2µF, 20%, SME VT, PES, 50V, 0.0039µF, 5%, AMZ VT, ALU, 50V, 1µF, 20%, SME VT, ALU, 50V, 1µF, 20%, SME VT, ALU, 50V, 4.7µF, 20%, SME VT, ALU, 50V, 0.22µF, 20%, SME VT, ALU, 10V, 47µF, 20%, SME VT, ALU, 10V, 47µF, 20%, SME VT, ALU, 10V, 47µF, 20%, SME VT, ALU, 10V, 47µF, 20%, SME VT, PES, 50V, 0.027µF, 5%, AMZ VT, ALU, 16V, 10µF, 20%, SME N/A VT, ALU, 50V, 0.1µF, 20%, SME VT, CER, 50V, 180pF, 5%, SL VT, PES, 50V, 0.0018µF, 5%, AMZ VT, ALU, 50V, 2.2µF, 20%, SME VT, CER, 50V, 220pF, 5%, SL VT, PPR, 100V, 0.0015µF, 5%, APS VT, PES, 50V, 0.01µF, 5%, AMZ
Ref. No. J301 J401 L001
Part No. 8245 5472 05 8245 5473 05 8242 1420 00
Description Connector, PI, jack, PH, 5P, BLU Connector, PI, jack, PH, 5P, GRN Coil, bias, 150µH Module, trap, 80kHz Module, MPX, XR-5/X-24 Module, trap, 80kHz SW, PL, slide, 2-2, non-shortening, SSSU1, L09 Pin, header Pin, header Pin, header Pin, header Pin, header Transformer, osc, main, 80kHz Transformer, osc, sub, 80kHz Cable assy, earth lug, D3-kink, L70 Resonator, P, CER, 4MHz, EFO
L101~401 8256 0660 00 L102~402 8256 0990 00 L103~403 8256 0660 00 S001, 002 8253 6520 05 TP001 8276 0010 00
TP101~401 8276 0010 00 TP104~404 8276 0010 00 TP105~405 8276 0010 00 TP106~406 8276 0010 00 T001 8242 1250 00 T101~401 8242 2470 00 W001 X001 8276 3640 07 8256 0980 00
· REGULATOR PCB
Ref. No. B001 Ref. No. Part No. 8274 1400 00 8251 9700 02 Part No. Description PCB assy, Regulator, X-24 Plain PCB, Regulator, X-24 Description IC, 220, regulator, µPC2410HF Capacitor, VT, PES, 50V, 0.01µF, AMZV Cable, flat, 4P, L200 Holder, cable, 4P, 51048
U001 8236 0449 10 C001, 002 8232 9011 03 W011 Y101 8276 9084 20 8207 0122 04
Ref. No. E001 E002 E003 E004 J001 J002 J003 J004 J005 J006 J007 J008 J009, 010 J011 J101 J201
MISCELLANEOUS 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 8245 5410 00 8245 3080 02 8245 5470 09 8245 2260 01 8245 3080 06 8245 3080 13 8245 3080 08 8245 3080 09 8245 5280 01 8245 3080 04 8245 5470 05 8245 5471 05 Connector, PL, jack, DC-inlet, YKB31-0012 Connector, PI, jack, SBRK, 2S-4 Connector, PI, jack, PH, 9P, WHT Connector, PL, jack, RCA 4P, YKC21-3115 Connector, PI, jack, SBRK, 6S-4 Connector, PI, jack, SBRK, 13S-4 Connector, PI, jack, SBRK, 8S-4 Connector, PI, jack, SBRK, 9S-4 Connector, PI, jack, 1P, RT-01T-1.0B Connector, PI, jack, SBRK, 4S-4 Connector, PI, jack, PH, 5P, WHT Connector, PI, jack, PH, 5P, RED
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
22
MIXER / JACK PCBs
JACK PCB (1/2)
SS T T R150 68K +VCC 8 2 3 U4A 4 R134A 3 1 C153 220P 4 -VCC 4556 1 U5A R153 47K 2 -VCC 2 R151 12K 8 4560 3 1 -16dBV +VCC R152 24K -10dBV -10dBV C152 10/16 L R +VCC +VCC -10dBV C107 10/16 C109 10/16 2 2 -10dBV 1 2 4 5 1 R117 24K U2A U101D R115 47K 9 A.B R126 +VCC 12K C251 22P R250 68K 6 5 U4B 4560 7 C252 10/16 MASTER FADER 20KAA R134B 6 5 4 6 8 R119 30K PAN R133 50KB 3 4 1 +VCC -VCC 10 1 2 2 U101C 1 4 -VCC C205 R205 10P 100K +VCC R213 12K C213 10/16 4560 U2B U201D R215 47K 9 6 A.B R225 47K R226 12K 2 U201C 1 4 -VCC A.B 5 +VCC R313 12K +VCC 8 2 3 U3A U301D R315 47K 9 6 A.B R326 +VCC 12K 8 R317 24K 4 1 +VCC -VCC 10 1 2 2 3 3 1 4 -VCC A.B +VCC 1 4 U401A C409 10/16 R431 20KA 3 6 5 U3B R415 47K 9 6 A.B +VCC CH4 BAR GRAPH -10dB D403 C11 22P C13 22P R12 12K R10 +VCC 12K 8 6 7 4560 5 U6B R13 47K C12 220P R11 12K C14 10/16 2 1 R127 12K R227 12K R327 12K R427 12K 4560 3 U6A 4 -VCC C1 47/10 C2 47/10 AGND AGND 1 2 3 4 5 6 7 8 9 W8 EEEEAAAAP / / / / · · · · · DDDDBBBBM 1 2 3 4 1 2 3 4 U T E -VCC C10 220P C414 R420 10/16 12K R422 10K R421 5.1K C415 10/16 U404 8 IN 7 AMP 5 GND -VCC +VCC C5 47/10 -5dB D404 0dB D405 +3dB D406 BA6124 D407 H+VCC +6dB R426 12K 4560 7 U401D 8 R417 24K D401 2 1 +VCC 10 1 2 2 U401C 3 -VCC -VCC A.B 5 4 U402 1 DTC144EK 1 3 3 U403 DTC144EK 2 R425 47K R409 30K R412 100K R414 12K C413 10/16 R411 12K D402 12K 1 REC 7 -VCC U401B 11 PB 1 3 2 INPUT FADER R413 R416 24K 3 2 4 5 1 R419 30K R418 30K C314 10/16 R322 10K 5 GND -VCC 10/16 C315 8 PAN R433 50KB U304 IN 7 AMP R321 5.1K R320 12K D303 D304 D305 D306 BA6124 D307 5 -VCC -VCC U302 DTC144EK 1 U301C 3 U303 DTC144EK 2 R325 47K R309 30K R312 100K R314 12K 4560 1 C313 10/16 R316 24K 3 2 4 5 1 R319 30K D203 C214 10/16 R222 10K 12K R220 R221 5.1K C215 10/16 8 IN 7 AMP 5 GND U204 -5dB D204 0dB D205 +3dB D206 BA6124 D207 CH3 BAR GRAPH -10dB -5dB 0dB +3dB +6dB +6dB OUT1 OUT2 OUT3 OUT4 OUT5 VCC 1 2 3 4 6 9 PAN R333 50KB 1 4 U301A C309 10/16 R331 20KA 3 D301 2 2 1 3 D302 -VCC U301B 11 PB R311 12K 1 REC 7 INPUT FADER -VCC C114 R120 10/16 12K R318 30K R122 10K R121 5.1K C115 10/16 U104 8 IN 7 AMP 5 GND -VCC U202 DTC144EK 1 D103 3 3 3 U203 DTC144EK 2 R209 30K +VCC +VCC R217 24K 8 4 5 1 R219 30K 7 2 C256 470/10 PAN R233 50KB 3 R216 24K R218 30K C207 10/16 C209 10/16 2 6 5 1 3 2 1 +VCC 10 1 2 R212 100K R214 12K D202 R211 12K D201 R231 20KA 3 2068 U1B REC 7 R207 47K -VCC U201B 11 PB C206 10P 7 1 1 4 U201A INPUT FADER A.B 5 C250 220P -VCC U102 DTC144EK 1 3 3 3 U103 DTC144EK 2 R125 47K R109 30K R112 100K R114 12K 4560 C150 220P 8 C113 10/16 3 1 3 D101 2 D102 R111 12K R131 20KA 3 -16.0dBV +VCC 1 U1A REC 7 R107 47K -VCC U101B 11 PB C106 10P 1 1 4 U101A 12K INPUT FADER R116 24K R118 30K 8 2068 4 -VCC R113 (6.0dB) -17.1dBV (+6dB) C154 22P (+7.1dB) C151 22P C105 R105 10P 100K
MIXER PCB
TRIM (0dB <-> 40dB)
J101
R103 1K
R130B
4
6
2
C101 NON
R101 12K
5
C103 100/10
3
C155 10/16
J4 R154 1K 2 1 3 3 1 DTC314TK R U105 2 L STEREO OUT -10dBV
INPUT MIC 1/3 (BALANCE) -10dBV <> -50dBV
J1 3 2 1
W1 3 2 1
100KCC
2
INPUT IMP MIC :12Kohm LINE:22Kohm
C102 NON
R102 12K
R130A
2
C104 100/10
3
1
3
J102
1
R104 1K
7
8
9
R106 100K
C254 22P R252 24K 6 5 4556 C255 10/16 7 R251 12K C253 220P U5B R253 47K R254 1K
AGND
TRIM (0dB <-> 40dB)
J201
R203 1K
R230B
3
U205 2 1 DTC314TK R256 16
4
6
6
C201 NON
R201 12K
5
C203 100/10
5
INPUT MIC 2/4 (BALANCE) -10dBV <> -50dBV
J2 3 2 1
W2 3 2 1
100KCC
INPUT IMP MIC :12Kohm LINE:22Kohm
2
C202 NON
R202 12K
R230A
2
C204 100/10
3
1
3
R156 16 R255 47K CH1 BAR GRAPH
W3 3 2 1
R L GND C156 470/10 R155 47K
J3 3 2 1
PHONES OUT (16ohm 20mW)
J202
1
R204 1K
7
8
9
J5
R206 100K
5. CIRCUIT & BLOCK DIAGRAMS
HGND -10dB -5dB D104 0dB D105 +3dB D106 BA6124 D107 CH2 BAR GRAPH -10dB +6dB J6 1 2 3 4 6 9 OUT1 OUT2 OUT3 OUT4 OUT5 VCC W4 2 1 PUNCH IN/OUT
AGND
LINE IN1 -10dBV
INPUT IMP 14Kohm
C108 10/16
R110 47K
R108 4.3K
JACK PCB (2/2)
J104
LINE IN2 -10dBV
INPUT IMP 14Kohm
C208 10/16
R210 47K
R208 4.3K
J204
LINE IN3 -10dBV
INPUT IMP 14Kohm
C308 10/16
R310 47K
R308 4.3K
J304
LINE IN4 -10dBV
INPUT IMP 14Kohm
C408 10/16
R410 47K
R408 4.3K
H+VCC
OUT1 OUT2 OUT3 OUT4 OUT5 VCC
1 2 3 4 6 9
J404
H+VCC
D1
R1
+VCC
TRK1
2
750
W5
1
SW1 2
1 3 U7 DTA144EK
D2
R2
TRK2
2
750
AGND
1
SW2 2
1 3 U8 DTA144EK
AGND +VCC -VCC HGND H+VCC H-VCC
1 2 3 4 5 6
D3
R3
HGND
TRK3
2
1
750
1
SW3 2
3 U9 DTA144EK
OUT1 OUT2 OUT3 OUT4 OUT5 VCC
1 2 3 4 6 9
D4
R4
-VCC
TRK4
2
1
750
H-VCC
1
SW4 2
3 U10 DTA144EK
D5
R5
A.B
2
1
+VCC
750
1 2
SW5 2
3 U11 DTA144EK
J7 1 HGND H-VCC TOP SHIELD C6 47/10 AGND
WIDE PITCH CONTROL (+15% <-> -50%) R135 10KB 4 5 3 1
POWER LED D7 R7
750
REC LED
D6
R6
2
1
750
3 U12 DTA144EK 1 2 3 4 5 6 7 8 W7 PPPPRRRR BBBBEEEE 4 3 2 1 CCCC 1 2 3 4
-VCC
H-VCC
AGND
W6
1 1 1 1 1 2 3 4 5 6 7 8 9 0 1 2 3
ART T T T T T T T A P · ERRRRRRRR · I BCKKKKKKKKB T C 1 2 3 4 1 2 3 4 H SEL SW
LED
X-24
23
24
X-24
R/P / REGULATOR PCBs
R/P PCB
R407 R307 R207 R107 REP EQ TP101 5 3 C101 560P L101 2 1 R102 100K R101 24K 6 C103 NON C105 0.0082(PP) 3 R105 390K 2 REP LEV 1 C106 47/10 2068 7 U101B C104 220P R103 22KB C107 2.2/50 1 R109 2.2K +VCC 1 0 2 6 8 4 1 5 C114 47/10 R117 2K C115 47/10 C117 47/10 3.3K 3.3K 3.3K 3.3K AGND R131 100 3 (-6.9dBV) R118 2K R119 2K R120 4.7K 3 REC LEVEL R122 6.2K C119 10/16 3 R121 22KB 2 1 U106 DTC114TK C120 NON C122 R125 15K 0.0018(PP) C123 U107 DTC114TK 3 2 1 D-VCC +VCC C202 1/50 3 3 C201 560P L201 2 1 R202 100K R201 24K 2 C203 NON C205 2068 1 U201A 4 C204 220P -VCC 1 R203 22KB 3 8 REP EQ TP201 C207 2.2/50 1 R209 2.2K L202 FB-7G 3 2 4 C209 1/50 R208 180 3 5 C210 1/50 1 1 6 1 4 1 1 9 +VCC 1 0 2 6 8 4 1 5 C214 47/10 R217 2K C215 47/10 C217 47/10 C216 47/10 R216 240 R218 2K R219 2K C218 0.027(PP) R220 4.7K 3 R222 6.2K REC LEVEL C219 10/16 3 R221 22KB C220 NON 2 1 6 5 2068 U201B 7 C224 2.2/50 R229 6.2K L203 3 C221 0.1/50 C222 R225 15K 0.0018(PP) C223 U207 DTC114TK 3 2 1 D-VCC +VCC 1 0 2 6 8 4 1 5 C314 47/10 R317 2K C315 47/10 C317 47/10 180P R224 15K R223 36K C228 0.01(PP) R234 2.2K D203 Q201 6 R236 22 1 8 7 4 1 2 2 1 2 3 2068 4 -VCC 180P R124 15K R123 36K C128 0.01(PP) R134 2.2K R135 2.2K R136 22 D103 Q101 6 1 8 7 4 C121 0.1/50 1 U101A 3 +VCC 8 C124 2.2/50 R129 6.2K L103 1 2 2 1 U108 DTC114TK R130 10K D104 D+VCC 2 5 4 3 R133 220KB 2 3 2 1 C126 0.0015(PP) 3 1 AGND BIAS ADJ 1 C125 220P ERASE CURR TP105 R132 1 1 1 TP104 BIAS CURR J101 1 2 3 4 5 J7 RRRR EEEEPPPP CCCCBBBB 4 3 2 1 1 2 3 4 8 7 6 5 4 3 2 1 J4 1 2 3 4 5 6 7 8 TAPE OUT -10dBV TRK4 TRK3 TRK2 TRK1
C102 1/50
L102 FB-7G 3 2 4
C110 1/50 1 3 C109 1/50
1 6
1 4
1 1
9
C116 47/10
R116 240
Dolby B U102 HA12135AF 5 1 2 1 3 7
7 8 1
6
R110 3.3K
R108 180
R113 18K
1
3
R106 470B
2 REP EQ 2
C108 3900P(PP) U104 DTC114TK 3 1 D102
C113 0.22/50
C118 0.027(PP)
U109
D101
C112 4.7/50
R114 20K R115 20K
D+VCC -VCC 1 2 U105 3
T101
TP106 OSC LEVEL 3 2 1 U208 DTC114TK R230 10K D204 D+VCC 2 5 4 3 R233 220KB 2 3 2 BIAS ADJ 1 C226 0.0015(PP) 3 1 AGND 1 C225 220P TP205 R232 1 1 R231 100 1 J201 1 2 3 4 5
Dolby B U202 HA12135AF 1 2 1 3 7
TP204 BIAS CURR
7 8 1
6
R210 3.3K
2 1 U206 DTC114TK
0.0082(PP) 3 R205 390K R206 2 470B REP LEV 1
R213 18K
2 REP EQ
C208 3900P(PP) U204 DTC114TK 2 3
C213 0.22/50
U209
D201
C212 4.7/50
C206 47/10
R214 20K R215 20K
D+VCC -VCC 1 2 U205 3
T201
R235 2.2K
1 D202
TP206 OSC LEVEL
C302 1/50 5 3 C301 560P L301 2 1 R302 100K R301 24K 6 C303 NON C305 0.0082(PP) 3 R305 390K 2 REP LEV 1 C306 47/10 2068 7 U301B C304 220P R303 22KB
REP EQ TP301 C307 2.2/50 1 R309 2.2K
L302 FB-7G 3 2 4
C310 1/50 1 3 C309 1/50 R308 180
1 6
1 4
1 1
9
C316 47/10
R316 240 R318 2K R319 2K C318 0.027(PP) R320 4.7K 3 R322 6.2K
3 REC LEVEL C319 10/16 2 3 1 R321 22KB C320 NON +VCC 8 2 3 2068 4 -VCC C322 R325 15K 0.0018(PP) C323 U307 DTC114TK 3 2 1 D-VCC 180P R324 15K R323 36K C328 0.01(PP) R334 2.2K R335 2.2K R336 22 D303 Q301 6 1 8 7 4 C321 0.1/50 1 U301A 3 2 C324 2.2/50 R329 6.2K L303 1
2 1 U308
R331 100 TP304 BIAS CURR J301 1 2 3 4 5
Dolby B U302 HA12135AF 5 1 2 1 3 7
DTC114TK R330 10K D304 D+VCC 2 5 4 3 R333 220KB 2 1 C325 220P TP305 R332 1 1
7 8 1
6
R310 3.3K
2 1 U306 DTC114TK
R313 18K
1
3
R306 470B
2 REP EQ
C308 3900P(PP) U304 DTC114TK 2 3 1 D302
C313 0.22/50
U309
D301
C312 4.7/50
R314 20K R315 20K
D+VCC -VCC 1 2 U305 3
T301 3 2 3
1
BIAS ADJ 1 C326 0.0015(PP)
TP306 OSC LEVEL 3 2 1 U408 R431 100 1 AGND J401 1 2 3 4 5
+VCC C402 1/50 3 3 C401 560P L401 2 1 R402 100K R401 24K 2 C403 NON C405 0.0082(PP) 3 R405 390K 2 REP LEV 1 C406 47/10 2068 1 U401A 4 C404 220P -VCC R403 22KB
2
REP EQ TP401 C407 2.2/50 1 R409 2.2K
8
L402 FB-7G 3 2 4
C410 1/50 1 3 C409 1/50 R408 180
1 6
1 4
1 1
9
+VCC 1 0 2 6 8 4 1 5
C416 47/10
R416 240 R418 2K R422 6.2K R420 4.7K 3 2
Dolby B U402 HA12135AF 5 1 2 1 3 7
REC LEVEL C419 10/16 2 3 1 R421 22KB
6 5 2068
C414 47/10 R417 2K C415 47/10
U401B 7
C424 2.2/50
TP404 BIAS CURR
R429 6.2K L403 3 1 2
DTC114TK R430 10K D404 D+VCC 2 5 4 3 R433 220KB 2 3 2 BIAS ADJ 6 R436 22 1 8 7 1 C426 0.0015(PP) TP1 1 3 1 AGND 1 C425 1 220P TP405 R432 1 1
C417 47/10
7 8 1
6
R410 3.3K
R413 18K
R419 2K C418 0.027(PP)
1
3
C408 3900P(PP) U404 DTC114TK 2 3 1 D402 D+VCC D+VCC
C413 0.22/50
1 U406 DTC114TK
C420 NON C422 R425 15K 0.0018(PP) C423 180P R424 15K
C421 0.1/50
U409 R423 36K C428 0.01(PP) R434 2.2K R435 U407 DTC114TK 3 2 1 2.2K D403 Q401 4
R406 470B
REP EQ D401 C412 4.7/50
R414 20K R415 20K
D+VCC -VCC 1 2 U405 3
T401
LED
SW
A.B REC TRK1 TRK2 TRK3 TRK4 TRK1 TRK2 TRK3 TRK4 A.B PITCH
J6 1 2 3 4 5 6 7 8 9 10 11 12 13
D+VCC R10 C20 0.01 3 R22 47K C21 0.01 4 5 R23 47K
2
19 20 22 23 24 25 26 27 28 29 34 35 36 37 38
P12 P13 P20 P21 P22 P23 K00 K01 K02 K03 KE0 R80 R81 R82 R83
VDD R40 R41 R42 R43 R50 R51 R52 R53 R91 R92 P10 R73 R72 R71 R70 R63 R62 R61 R60 TEST VSS
42 2 1 2 3 4 5 6 7 8 40 41 17 16 15 14 13 12 11 10 9 30 21 3 1 U4 2
R11 D-VCC
TP406 OSC LEVEL BGND +VCC D+VCC D+VCC 6 7 6 5 4 AGND 8 -VCC R50 20K U30 DTC144EK 3 2 1 DTC144EK 2 1 C50 100/10 2 R51 4.7K C52 0.022(PP) 4 T1 R54 R53 47K R52 3.3K Q2 47 C51 0.1(PP) R56 4.7K C54 0.0047(PP) C55 10/16 J11 1 2 3 4 +MVCC Q1 R1 820 POWER SW C6 220/10 R6 22 U3A 1 4560 4 R7 22 6 7 4560 U3B 5 R5 10K C4 100/10 8 R4 10K 3 2 C5 22/16 R8 750 D3 1 2 U2 C3 100/25 7 6 5 4 J1 1 3 2 S1 8 D1 W11 1 2 3 4 1 2 3 4 U1 UPC2410 C2 0.01 C1 0.01 2 1 O U T I N 3 3 Q3 R55 33K L1 150uH 8 7 BGND 1 C53 0.0047(PP)
DTA144EK 1 U5 3 2 DTA144EK 1 U6 3 2 DTA144EK 1 U7 3 2 DTA144EK
3 OFF -VCC 4 S2 3 2 1 ON
R3 20K
C12 22/16
U23 TMP47C200BN
DOLBY ON/OFF 5 1
REGULATOR PCB
3 D-VCC U31 2 R12
D+VCC C22 0.01 6 7 R24 47K C23 0.01 8 9 1 10 R20 47K J2 1 2 R21 10K 11 R25 47K C24 0.01 R26 47K C25 0.01 R27 10K DGND D5 C28 0.1 33
RESET X I N 3 1 R28 47K R29 47K R30 10K R31 47K R32 10k R33 47K 1
3
1 U8 2 3 D+VCC 4 3 5 1 3 1 U12 2 DTA144EK 1 U13 2 DTA144EK 3 1 U14 2 DTA144EK D-VCC R38 10K AGND BGND C9 100/10 DGND C7 220/10 D4 +VCC R13 4.7 D+VCC D-VCC
G
DGND D+VCC
X O DGND U T 3 2 3 X1 4MHz 2
DTA144EK 1 U9 3 2 DTA144EK 1 U10 2 3 DTA144EK 1 U11 3 2 DTA144EK
C8 100/10
R2 390K 3
DC IN (12V 600mA)
3
2
1
DGND 3 1 U15 2 DTA144EK 1 U16 2 DTA144EK 1 U17 2 DTA144EK 1 U18 2 DTA144EK
PUNCH IN/OUT
C2 470/25
AGND
DGND
3
3
1 U19 2 DTA144EK 1 U20 2 DTA144EK 1 U21 2 DTA144EK 1 U22 2 DTA144EK
-VCC R14 4.7
3 +MVCC U40 DTC144EK 2 1 DGND U41 3 DTA144EK 1 2 R41 10K R40 1M Q4 2SK117 R42 3.3K -VCC R44 510 1 2 3 4 5 6 7 8 9 -VCC DGND I P R - + BA NL E HA C I Y B I T TRANSPORT J3 PITCH ADJUST 2 1 R43 3.3KB 3 C29 0.01 +MVCC
3
-VCC
D-VCC
3
3
3
3
DGND 1 2 3 4 5 6 7 8 9 D-VCC 1 2 3 4 5 6 J5 J9 1 J10 1 W1 1 AGND
J8
E EE EA AAA P / / / / · · · · · DDD DB BBBM 1 2 3 4 1 2 3 4 U T E
C S E H N I T E E L R D
B S O H T I T E O L M D
T G R N A D N S P O R T
BLOCK DIAGRAM
LINE OUT
-10dBV
LINE IN/INSERT
-10dBV
1
TIP: RTN RING: SEND
REC A. B REC PB
PAN INPUT FADER
REC TRK 1
REC A. B REC PB
L R
MASTER FADER PAN PHONES OUT
16 ohm 20mW
LINE IN/INSERT
-10dBV
2
TIP: RTN RING: SEND
REC A. B REC PB
INPUT FADER
REC TRK 2
REC A. B REC PB
BARGRAPH
1
PAN
LINE IN/INSERT
-10dBV
3
TIP: RTN RING: SEND
REC A. B REC PB
2 3
INPUT FADER
REC TRK 3
REC A. B REC PB
4
PAN
LINE IN/INSERT
-10dBV
4
TIP: RTN RING: SEND
REC A. B REC PB
TAPE OUT
-10dBV
INPUT FADER
REC TRK 4
REC A. B REC PB
1 2 3 4
MIC IN 1/3
-10dBV <--> -50dBV
2 3 1
TRIM
MIC IN 2/4
-10dBV <--> -50dBV
2 3
TRIM
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