Fostex X-24 User Manual

Service Manual

Model

X-24

multitracker

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:

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.

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.

“WARNING”

“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”

SAFETY INSTRUCTIONS

1.

Read instructions - All the safety and operating instructions should be read before the appliance is operated.

2.

Retain instructions - The safety and operating instructions should be retained for future reference.

3.

Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to.

4.

Follow instructions - All operating and use instructions should be followed.

5.

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.

6.

Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer.

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

7. mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation - The appliance should be situated so that its

8. 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.

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 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.

Heat - The appliance should be situated away from heat

9. sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat. Power Sources - The appliance should be connected to a

10. power supply only of the type described in the operating instructions or as marked on the appliance. Grounding or Polarization - The precautions that should

11. be taken so that the grounding or polarization means of an appliance is not defeated. Power Cord Protection - Power supply cords should be

12. 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 rec-

13. ommended by the manufacturer. Nonuse Periods - The power cord of the appliance should

14. be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry - Care should be taken so that

15. objects do not fall and liquids are not spilled into the enclosure through openings. Damage requiring Service - The appliance should be ser-

16. viced by qualified service personnel when:

The power supply cord or the plug has been damaged;

A.

or Objects have fallen, or liquid has been spilled into the

B.

appliance; or The appliance has been exposed to rain; or

C.

The appliance does not appear to operate normally or

D.

exhibits a marked changed in performance; or The appliance has been dropped, or the enclosure

E.

damaged.

Servicing - The user should not attempt to service the ap-

17. pliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

TABLE OF CONTENTS

X-24

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . .

3. ADJUSTING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . .

4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . .

5. CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . .

4 7

8 14 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) AC adaptor AD-12A : 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 : 8228715000 Packing, L, X-24 : 8228439001 Packing, R, X-24 : 8228439002

CAUTION

Parts marked with this sign are safety critical components. They must always be replaced with identical components.

!

Refer to the Fostex Parts List and ensure exact replacement.

3

X-24

1. SPECIFICATIONS

DEFINITION

Specification Unit 0 dBV = 1 Vrms Normal Fader Position

Input fader 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 At 8 ± 1 position

Condition 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 Phone (unbalanced) / XLR (balanced) Input level -50 ~ -10 dBV Impedance 10 kΩ or more

LINE IN / INSERT (RCV)

Connector Stereo phone (tip) Input level -10 dBV Impedance 10 kΩ or more

Standard Output

TAPE OUT 1 ~ 4

Connector RCA pin Output level -10 dBV Load impedance 10 kΩ or more

LINE OUT L, R

Connector RCA pin Output level -10 dBV Load impedance 10 kΩ or more

INSERT (SEND)

Connector Stereo phone (ring) Output level -10 dBV Load impedance 10 kΩ or more

Phones Max. Output Level 20 mW or more (1 kHz, 16 Ω load) Level Indication 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) 40 ~ 20 kHz ± 3 dB at LINE OUT MIC IN (Input Level: -10 dBV) 20 ~ 20 kHz ± 3 dB at LINE OUT LINE IN (Input Level: -10 dBV) 50 ~ 10 kHz ± 2 dB at PHONES (10 mW / 16 Ω)

S / N (shorted by 150

MIC IN (MIC GAIN: MIC) 66 dB or more at LINE OUT (DIN AUDIO)

MIC IN (MIC GAIN: LINE) 73 dB or more at LINE OUT (DIN AUDIO)

ΩΩ

Ω resistor)

ΩΩ

68 dB or more at LINE OUT (IHF A)

75 dB or more at LINE OUT (IHF A)

4

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 70 dB or more at 1 kHz (from standard fader position) Crosstalk 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 -20 dBVp-p or less Other switching -30 dBVp-p or less

Shock Noise -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 0.25 % or less (TCW-211 test tape, ANSI WTD.) REC & PLAY 0.30 % or less (AC-514 test tape, ANSI WTD.)

Pitch Control

MIN (PITCH VR: Fully CCW) -45 % or less (TCW-211 test tape)

MAX (PITCH VR: Fully CW) +12 % or more (TCW-211 test tape) Fast Winding Time (FF / RWD) 150 ± 20 sec. (TAPE: C-60) Tape Counter Deviation 0 ± 7 (FF from BOT to EOT and then RWD to BOT again.) Standard Level

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)

X-24

+3 dB

-3 dB 400 Hz 12.5 kHz40 Hz

REC & PLAY Test tape: AC-514 (NR: OUT, recording level: 0 dB)

+3 dB

-3 dB 400 Hz 12.5 kHz40 Hz

Test tape: AC-514 (NR: IN, recording level: -25dB)

5 dB

250 Hz

10 kHz

6 dB

12.5 kHz

5

X-24

RECORDER SECTION (continued)

Level Deviation at Reference Output Level

PLAY 1 dB or less at 400 Hz (NR: OUT, TCW-231 test tape)

3 dB or less at 40 HZ ~ 12.5 kHz (NR: OUT, SCW-977 / TCW-284F test tape)

REC & PLAY 1 dB or less at 400 Hz (NR: OUT, AC-514 test tape)

2 dB or less at 100 Hz ~ 10 kHz (NR: OUT, AC-514 test tape)

S/N

PLAY 47 dB or more (NR: OUT, DIN AUDIO)

55 dB or more (NR: OUT, IHF-A)

REC & PLAY 45 dB or more (NR: OUT, DIN AUDIO)

48 dB or more (NR: OUT, IHF-A) 48 dB or more (NR: IN, DIN AUDIO) 55 dB or more (NR: IN, IHF-A)

Distortion (REC & PLAY) 2 % or less (Input signal: 1 kHz / standard level, standard fader position,

with 400 Hz HPF & 30 kHz LPF)

Erasure Ratio 67 dB or more at 1 kHz (Input signal: 1 kHz / 0 dBV, 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.)

Channel Separation 50 dB or more (Input signal: 1 kHz / -10 dBV, standard fader position,

with 1 kHz BPF. Measure leakage level when adjacent track is put into REC mode.)

Sync Crosstalk -25 dBV or less (Input signal: 1 kHz / -10 dBV)

-10 dBV or less (Input signal: peak frequency / -10 dBV) (Measure leakage level when adjacent track is put into REC mode.)

Bias Leakage -35 dBV or less (No LED meter is lit. Standard fader position.

Measure leakage level at TAPE OUT when unit is put into REC mode.)

Click Noise

→→

PLAY

→ STOP -30 dBVp-p or less

→→

REC

→ STOP

→→

Monitor -20 dBVp-p or less PLAY -20 dBVp-p or less

Punch In / Out -30 dBVp-p or less at PLAY

Shock Noise -30 dBVp-p or less (Measure playback noise level when one side of

appliance is dropped 3 times from 5 cm height.)

Specifications and appearance are subject to change without notice for product improvement.

6

2. CONTROLS, INDICATORS & CONNECTORS

< Top Panel >

X-24

MASTER

PAN INPUT/PLAYBACK LEVEL

1

L

R

2

R

L

3

R

L

4

LR

1/3

Auto

Bounce

MIC IN

REC SEL

1

REC SEL

2

REC SEL

3

REC SEL

4

RL4321

LINE OUTLINE IN/INSERT

REHEARSAL

2/4

OFF ON DOLBY NR

-+

WIDE PITCH

6+305-10

POWERREC

STANDBY

DOLBY B NR

REC REW FF STOP PAUSEPLAY

ON

DC IN

12V

RESET

000

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

7

X-24

< Front Panel >

)

2 (HOT

PUNCH

IN/OUTPHONES

)

1 (GND

3 (COLD

)

< Rear Panel >

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

]

1. Mic input jacks [MIC IN 1/3, 2/4

2. Headphone jack [PHONES

3. Punch in/out jack [PUNCH IN/OUT

TAPE OUT

1234

]

4. Dolby B noise reduction on/off switch

]

[

DOLBY NR ON/OFF

]

5. Power switch [ON-STANDBY

6. DC IN connector [DC IN 12V

]

3. ADJUSTING PROCEDURES

3-1. Routine Maintenance

3-1-1. Cleaning

1) Head

With constant use, the head surface becomes soiled with magnetic particles from the tape, dirt and dust. Under such conditions, the tape will not always be in smooth contact with the head and thus result in poor performance. Less

8

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

1) it far away from the deck. Switch on the head demagnetizer while holding it about one meter away from the Model X-24. Then, slowly move

2) 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

3) 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.

X-24

3-2. Test Equipment and Adjusting Tools

The following tools and equipment are required for adjusting the Model X-24.

1)

Head height and tape contact adjusting jig Model 9001 (P/N: 8286001000)

2)

Torque meter

Cassette torque meter TW-2231 (P/N: 8286008000): 0 ~ 200 g-cm (0 ~ 2.8 Oz-In) Cassette torque meter TW-2111A (P/N: 8286009000): 0 ~ 100 g-cm (0 ~ 1.4 Oz-In)

3)

Mirror tape cassette TCC-902 (P/N: 8286002000)

4)

Test tape

Speed / Flutter (3 kHz) Model 9152 (P/N: 82660022000)

Also 3150 Hz test tape for Wow & Flutter measurement is

recommended. Reference playback level TCW-231 (P/N: 8266002000) Playback frequency response TCW-284F (P/N: 8266003000)

5)

Blank tape C-90 or shorter tape, TYPE II / HIGH position

6)

Audio oscillator General type

7)

Frequency counter General type

8)

Bandpass filter General type

9)

AC voltmeter Stereo type is recommended.

10)

Oscilloscope General type

11)

Wow & Flutter meter General type

12)

Distortion meter General type

13)

Frequency counter General type

9

X-24

3-3. Tape Transport Mechanical Data

3-3-1. Reel torque

PLAY mode (TW-2111A) Supply: 1.5 ~ 6 g-cm

1) Takeup: 20 ~ 70 g-cm

FF/REW mode (TW-2231) FF /REW: 60 ~ 120 g-cm

2)

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 At 8 ± 1 position Master fader At 8 ± 1 position Pan Fully CCW (L) or CW (R) position

3-6. Check and Adjusting of Head Azimuth

Switch off the DOLBY SW.

1)

Connect an AC volt meter to the TAPE OUT and playback the 12.5 kHz section on the TC-284W test tape.

2)

Rotate the REC/PLAY head azimuth adjusting screw to obtain a maximum output level.

3)

3-7. Tape Speed Check and Adjustment

Confirm that the Pitch control knob is at center position.

1)

Connect a frequency counter or wow & flutter meter with frequency counter to the TAPE OUT and playback the

2)

Model 9152 test tape. Check the tape speed and wow & flutter if they satisfy the following specifications.

3)

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

If the tape speed is not within the above specification, adjust R43 (3.3 kΩ) on the R/P AMP PCB assy.

4)

Next, check if the tape speed variable range satisfies the specifications below.

5)

Maximum tape speed: +12 % or more (3360 Hz or more) Minimum tape speed: -45 % or less (1650 Hz or less)

10

3-8. Playback Level Calibration

Set the controls as follows.

1)

Record track select switch: OFF Dolby B noise reduction on/off switch: OFF

Connect an AC volt meter to the TAPE OUT 1 through 4 pin jacks.

2)

Playback the TCW-231 test tape and check the output level if it is -10 dBV (0.3 V) ± 1 dB reading.

3) If the reading is not within the above range, adjust R106 ~ R406 on the R/P AMP PCB assy.

4)

3-9. Playback Frequency Response Calibration

Set the controls as follows.

1)

Record track select switch: OFF Dolby B noise reduction on/off switch: OFF

Connect an AC volt meter to the TAPE OUT 1 through 4 pin jacks respectively.

2) 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

3) the 400 Hz output level. Confirm that the output level at 12.5 kHz is within ± 1 dB of the 400 Hz output level.

4)

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.

X-24

NOTE:

Adjust the remaining tracks in the same way.

If the voltage at TP106 is adjusted at minimum, the erase current flowing the erase head is set to the maximum.

Track 2: Track 3: Track 4:

Adjust T201 for minimum voltage at TP206. Then, confirm that the voltage at TP205 is more than 55 mV. Adjust T301 for minimum voltage at TP306. Then, confirm that the voltage at TP305 is more than 55 mV. 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.*

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

1) 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.) Set the controls as follows.

2)

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

Connect an AC volt meter to the TAPE OUT 1 ~ 4 pin jacks.

3) Put the transport into REC PAUSE mode and adjust the Input Fader so that the level at TAPE OUT 1 ~ 4 is -10 dBV

4) (0.3 V). Release the PAUSE button and start recording the signal.

5) After recording a certain length, rewind the tape to the start point of recording section. Then, playback the tape and

6) check the level at TAPE OUT 1 ~ 4. If the AC volt meter reading is not within -10 dBV (0.3 V) ± 0.5 dB, adjust the pot R121 ~ 421 (22 kΩ) on the R/P PCB assy.

11

X-24

3-13. Overall Frequency Response Adjustment

Set the controls under the same condition as 3.12 except the DOLBY switch. (The switch should be turned on.)

1) Apply a 400 Hz, -35 dBV (18 mV) signal to the INPUT 1 and 2 phone jacks.

2) Record the signal, rewind and playback the recorded section of the tape and memorize the output level at TAPE

3) OUT 1 ~ 4. Next, apply 6 kHz & 12 kHz, -35 dBV (18 mV) signals to the INPUT 1 and 2 phone jacks.

4) Record the signal, rewind and playback the recorded section of the tape.

5) 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.

6) 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

Connect a distortion meter, 400 Hz HPF and 30 kHz LPF to TAPE OUT 1 ~ 4 and set the controls under the same

1) condition as 3-12. Record a 1 kHz, -10 dBV (0.3 V) sine wave signal.

2) Playback the recorded part and check if the distortion level is less than 2 %.

3)

3-15. Erasure Measurement

Connect a 1 kHz bandpass filter and AC volt meter to TAPE OUT 1 ~ 4 and set the controls under the same

1) condition as 3-12. Record a 1 kHz, 0 dBV (1 V) sine wave signal which is 10 dB higher than the reference recording level on a blank

2) tape. Rewind the tape to the start point of recording and advance it by a short length. Then, record again without

3) applying the signal on the remaining part. Rewind the tape to the start point again and play it back. Check if the level ratio between the playback level and no-

4) signal section (erased part) is 67 dB or more.

3-16. Cross Erasure Measurement

Set the controls as follow.

1)

Trim knob: At minimum Input fader: Standard position (At 8 ± 1) Dolby B noise reduction on/off switch: OFF

Input a 100 kHz, -10 dBV signal to the INPUT 1 and 2 phone jacks and record the signal on all tracks.

2) Rewind the tape to the start point of recording. Then, erase the 10 kHz signal on the track and check if the level

3) difference at the corresponding track indicated below is within 1 dB.

Tracks to be measured Track (s) to be erased

12 2 1 and 3 3 2 and 4 43

If the level goes down by more than 1 dB, check the tape running path again.

4)

12

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).

Set the controls as follow and put a blank tape to the transport.

1) Trim knob: At minimum Input fader: Standard position (At 8 ± 1) Dolby B noise reduction on/off switch: OFF

Apply a signal whose level is -10 dBV (0.3 V).

2)

Put one track into REC mode and check if the level at TAPE OUT on an adjacent track is within the specifications

3)

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

Set the control as follow.

1) Dolby B noise reduction on/off switch: OFF

Connect an AC volt meter and put the transport into PLAY mode without loading a tape.

2)

Check if the AC volt meter reading is within the following specifications.

3) DIN AUDIO: 47 dB IHF-A: 55 dB

X-24

3-18-2. Record and reproduce (Overall)

Set the control as follow.

1) Dolby B noise reduction on/off switch: OFF

Put a blank cassette tape and start recording without applying a signal.

2)

Rewind the tape to the start point and play it back.

3)

Check if the AC volt meter reading is within the following specifications.

4) DIN AUDIO: 45 dB IHF-A: 48 dB

Next, turn the Dolby switch on and repeat the above procedures 2) ~ 4).

5)

Check if the AC volt meter reading is within the following specifications.

6) DIN AUDIO: 48 dB IHF-A: 55 dB

3-19. Click Noise Measurement

3-19-1. Dolby switch on/off

Check if the click noise level at TAPE OUT when turning on/off the Dolby switch is less than -30 dBVp-p.1)

3-19-2. REC/STOP (monitor)

Check if the click noise level at TAPE OUT when punching out by pressing the STOP button is less than -20 dBVp-p.1)

3-19-3. REC/STOP (on tape)

Turn off the Dolby switch, turn on all the 1 ~ 4 record track switches and put a blank cassette tape in the transport.

1)

Plug the foot switch (e.g. Model 8051) in the Punch in/out jack and press the PLAY button.

2)

Press the foot switch repeatedly and check if the click level at TAPE OUT 1 ~ 4 is less than -20 dBVp-p.

3)

13

X-24

3-20. Table of Adjusting Items

Adjusting Item Measuring Point Adjusting Point Ref. Clause (page)

Tape speed TAPE OUT R43 (R/P) 3-7 ( P10) Playback level calibration TAPE OUT 1 ~ 4 R106 ~ R406 (R/P) 3-8 (P10 ~ 11) Playback frequency response calibration TAPE OUT 1 ~ 4 R103 ~ R403 (R/P) 3- 9 (P11)

Erase c urrent adjustment 3-10 ( P11) Coarse bias adjustment TP104 ~ 404 R133 ~ 433 3-11 (P11)

Record level calibr ati on TAPE OUT 1 ~ 4 R121 ~ 421 3-12 (P11) Overall frequency response adjustment TAPE OUT 1 ~ 4 R133 ~ 433 3-13 (P12)

TP106 ~ TP406 T101 ~ 401 (R/P) TP105 ~ TP405

4. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST

X-24 OVERALL EXPLODED VIEW & PARTS LIST

Ref. No. Part No. Description

1 8216 6580 00 Sheet, meter, X-24 2 8212 5931 00 Cover, cassette, X-14/24 3 8212 6050 00 Case, top, X-24 4 8226 1590 04 Knob, fader, N7, GR 5 8226 1590 05 Knob, fader, N7, R 6 8226 2070 02 Knob, pitch, gain, N7 7 8226 2070 01 Knob, pitch, N7 8 8216 6490 00 Cushion, cover, X-14/24

9 8216 4230 00 Reflector, cassette 10 8214 2110 00 Spring, cassette, X-18/14/24 11 8216 6590 00 Shield, top, X-24 12 8226 2360 01 Knob, sel, bounce, X-24 13 8204 0370 01 Ring, CSTW-2 14 8226 1620 05 Knob, volume, N7, Y 15 8274 1330 00 PCB assy, Mixer, X-24 16 8216 6610 00 Shield, bottom, X-24 17 8270 8240 00 Transport assy, X-24 18 8226 2131 01 Knob, cassette, REC, X-14/24 19 8226 2101 01 Knob, cassette, PLAY, X-14/24

Ref. No. Part No. Description

20 8226 2091 01 Knob, cassette, REW, X-14/24 21 8226 2081 01 Knob, cassette, FF, X-14/24 22 8226 2111 01 Knob, cassette, STOP, X-14/24 23 8226 2121 01 Knob, cassette, PAUSE, X-14/24 24 8216 6600 00 Shield, center, X-24 25 8274 1340 00 PCB assy, Jack, X-24 26 8221 2260 00 Bracket, jack, X-24

!

27 8274 1350 00 PCB assy, R/P, X-24 28 8204 0820 00 Plate, mounting, B 29 8212 6060 00 Case, bottom, X-24

!

30 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

31 8274 1400 00 PCB assy, Regulator, X-24

!

32 8216 6800 00 Sheet, isolation X-24 33 8277 4470 15 Cable assy, 1P, earth lug, D3-8MF/F,

L150

14

X-24 TRANSPORT EXPLODED VIEW & PARTS LIST

Ref. No. Part No. Description

1 8259 0500 00 Head, erase, X-14/24

2 8259 0520 00 Head, R/P, 4T, N-LR44RS07, X-24

3 8260 4620 00 Pinch roller assy

4 8260 4630 00 Idler arm assy

5 8260 4640 00 Fly wheel assy

6 8260 4650 00 Motor assy

7 8260 4660 00 F.R. arm assy

8 8212 4930 00 Lever, REC safety

9 8212 4910 00 Gear, arm 10 8212 4920 00 Gear, FF 11 8253 4280 00 SW, leaf, MSW-1541XACV 12 8253 4290 00 SW, leaf, MSW-1716CV

Ref. No. Part No. Description

13 8223 2770 00 Shaft, button 14 8216 5310 00 Belt, main 15 8216 5320 00 Belt, sub 16 8216 5330 00 Belt, counter 17 8221 1970 00 Bracket, button 18 8256 1690 00 Counter 19 8214 3550 00 Spring, pinch arm 20 8214 3560 00 Spring, FR torsion 21 8214 3570 00 Spring, stop/pause 22 8214 3580 00 Spring, safety sensor 23 8214 3590 00 Spring, rec lever 24 8214 3600 00 Spring, play lever

X-24 OVERALL EXPLODED VIEW

1

5

6

4

8

7

9

BBT 3x8 CZn

X-24

2

BBT 3x8 CZn

17

3

18

19

10

20

21

22

23

11

13

12

BBT 3x8 CZn

3x8 CZn

14

BBT

33

BBT 3x8 CZn

26

31

BBT 3x8 CZn

24

BBT 3x8 CZn

25

16

BBT 3x8 CZn

32

30

BBT 3x8 CZn

28

27

BBT 3x8 CZn

29

15

BBT 3x12 BZn

15

16

X-24

X-24 TRANSPORT EXPLODED VIEW

X-24 PCB PATTERN DRAWING

X-24

• MIXER / JACK PCBs

17

18

X-24

• R/P / REGULATOR PCBs

X-24 Parts List

• MIXER PCB

Ref. No. Part No. Description

8274 1330 00 PCB assy, Mixer, X-24

B001 8251 9680 01 Plain PCB, Mixer, X-24

ICs

Ref. No. Part No. Description U001 8236 5405 00 ST, analog, NJM2068M U002~004 8236 7207 00 ST, analog, NJM4560M U005 8236 0352 03 SIP, analog, NJM4556AL U006 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

D007 8234 1046 02 Opt., VT, LED, GRN,

SLR-332MC-TE7 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 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 D107~407 8234 1046 01 Opt., VT, LED, RED,

SLR-332VC-TE7

RESISTORs

Ref. No. Part No. Description 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%

X-24

Ref. No. Part No. Description R108~408 8230 1384 32 HT, carbon, 1/4W, 4.3k Ω, 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, 5.1k Ω, 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

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 R135 8240 1670 08 Pot, PI, RT09, 10kΩB, RK09K113 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%

CAPACITORs

ALU = Electrolytic type

CER = Ceramic type

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 C010 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL C011 8232 8012 20 VT, CER, 50V, 22pF, 5%, SL C012 8232 8012 21 VT, CER, 50V, 220pF, 5%, SL C013 8232 8012 20 VT, CER, 50V, 22pF, 5%, SL C014 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME 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

X-24

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 C110~410 Wire, jumper, IPS-1041-2, F5 C111~411 N/A C112~412 N/A 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

MISCELLANEOUS

Ref. No. Part No. Description E001 Wire, jumper, IPS-1041-2, F5 E002 Wire, jumper, IPS-1041-4, F10 J004 8245 2120 01 Connector, PL, jack, RCA, 2P, BLK J007 8245 5280 01 Connector, PI, jack, 1P, RT-01T-1.0B J104~404 8245 2980 00 Connector, PL, jack, phone,

LGR4609-7000 S001~005 8253 1350 02 Switch, PT, tact, SOR-112HS Y005 8207 0122 09 Holder, cable, 9P, 51048 Y006 8207 0122 13 Holder, cable, 13P, 51048 Y007 8207 0122 08 Holder, cable, 8P, 51048 Y008 8207 0122 06 Holder, cable, 6P, 51048 W001 8277 0160 15 Cable assy, shield 2C, 3P,

WHT-9073, L150 W002 8277 0161 30 Cable assy, shield 2C, 3P,

RED-9073, L300 W003 8277 0162 50 Cable assy, shield 2C, 3P,

BLK-9073, L500 W005 8276 9086 25 Cable, flat, 6P, L250 W006 8276 9093 25 Cable, flat, 13P, L250 W007 8276 9088 25 Cable, flat, 8P, L250 W008 8276 9089 25 Cable, flat, 9P, L250

• JACK PCB

Ref. No. Part No. Description

8274 1340 00 PCB assy, Mixer, X-24

B001 8251 9681 02 Plain PCB, Jack, X-24

Ref. No. Part No. Description R102, 202 8230 1381 23 Resistor, HT, carbon, 1/4W,

12kΩ, 5%

C101, 201 N/A C102, 202 N/A E001 Wire, jumper, IPS-1041-2, F5 E002 Wire, jumper, IPS-1041-4, F10 J001 8245 1711 03 Connector, PI, jack, 8283, 3P, WHT J002 8245 1712 03 Connector, PI, jack, 8283, 3P, RED J003 8245 1713 03 Connector, PI, jack, 8283, 3P, BLK J005 8245 2980 00 Connector, PL, jack, phone,

LGR4609-7000

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 W004 8276 9082 20 Cable, flat, 2P, L200 Y901 8207 0122 02 Holder, cable, 2P, 51048

• R/P PCB

Ref. No. Part No. Description

8274 1350 00 PCB assy, R/P, X-24

B001 8251 9700 01 Plain PCB, R/P, X-24

ICs

Ref. No. Part No. Description U001 N/A U002 8236 0782 06 PT, digital, driver, DTA143TS U003 8236 0361 00 SIP, analog, BA4560N U004~022 8236 5707 01 ST, digital, driver, DTA144EK U023 8236 0837 00 SDI, digital, CPU, X-24,

TMP47C200BN U030, 031 8236 5706 01 ST, digital, driver, DTC144EK U040 8236 5706 01 ST, digital, driver, DTC144EK U041 8236 5707 01 ST, digital, driver, DTA144EK 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

20

Ref. No. Part No. Description R101, 201 8230 1381 23 Resistor, HT, carbon, 1/4W,

12kΩ, 5%

TRANSISTORs

Ref. No. Part No. Description Q001 8234 1430 00 V, NPN, 2SC3071

X-24

Ref. No. Part No. Description Q002, 003 8234 5043 03 VT, NPN, 2SC1740S, S Q004 8234 5050 00 VT, FET, 2SK117, Y/GR/BL Q101~401 8234 5043 03 VT, NPN, 2SC1740S, S

DIODEs

Ref. No. Part No. Description D001 8234 0196 02 VT, DSK10C-BT D002 Wire, jumper, IPS-1041-2, F5 D003 8234 0196 02 VT, DSK10C-BT 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. Part No. Description R001 8230 1388 21 HT, carbon, 1/4W, 820Ω, 5% R002 8230 1383 94 HT, carbon, 1/4W, 390kΩ, 5% R003 8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5% R004, 005 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R006. 007 8230 1382 20 HT, carbon, 1/4W, 22Ω, 5% R008 8230 1387 51 HT, carbon, 1/4W, 750Ω, 5% R010 8230 0510 06 V, array, 1/8W, 47kΩ-47kΩ x 5,

5%, RKC-E

R011 8230 0361 03 V, array, 1/8W, 10kΩ x 4, 5%, RKC R012 8230 0361 03 V, array, 1/8W, 10kΩ x 4, 5%, RKC R013, 014 8230 1384 79 HT, carbon, 1/4W, 4.7Ω, 5% R020 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5% R021 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% R030 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R031 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5% R032 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R033 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5% R038 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R040 8230 1381 05 HT, carbon, 1/4W, 1MΩ, 5% R041 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R042 8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5% R043 8231 5033 32 R-TRIM, PIT, carbon, 3.3kΩ, 637T R044 8230 1385 11 HT, carbon, 1/4W, 510Ω, 5% R050 8230 1382 03 HT, carbon, 1/4W, 20kΩ, 5% R051 8230 1384 72 HT, carbon, 1/4W, 4.7kΩ, 5% R052 8230 1383 32 HT, carbon, 1/4W, 3.3kΩ, 5% R053 8230 1384 73 HT, carbon, 1/4W, 47kΩ, 5% R054 8230 1384 70 HT, carbon, 1/4W, 47Ω, 5% R055 8230 1383 33 HT, carbon, 1/4W, 33kΩ, 5% R056 8230 1384 72 HT, carbon, 1/4W, 4.7kΩ, 5% R101~401 8230 1382 43 HT, carbon, 1/4W, 24kΩ, 5%

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, 3.3k Ω, 5% R108~408 8230 1381 81 HT, carbon, 1/4W, 180Ω, 5% R109~409 8230 1382 22 HT, carbon, 1/4W, 2.2k Ω, 5% R110~410 8230 1383 32 HT, carbon, 1/4W, 3.3k Ω, 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, 4.7k Ω, 5% R121~421 8231 5032 23 R-TRIM, PIT, carbon, 22kΩ, 637T R122~422 8230 1386 22 HT, carbon, 1/4W, 6.2k Ω, 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, 6.2k Ω, 5% R130~430 8230 1381 03 HT, carbon, 1/4W, 10kΩ, 5% R131~431 8230 1381 01 HT, carbon, 1/4W, 100Ω, 5% R132~432 8230 1381 09 HT, carbon, 1/4W, 1 Ω, 5% R133~433 8231 5032 24 R-TRIM, PIT, carbon, 220kΩ, 637T R134~434 8230 1382 22 HT, carbon, 1/4W, 2.2k Ω, 5% R135~435 8230 1382 22 HT, carbon, 1/4W, 2.2k Ω, 5% R136~436 8230 1382 20 HT, carbon, 1/4W, 22Ω, 5%

CAPACITORs

ALU = Electrolytic type

CER = Ceramic type

PES = Mylar type

PPR = Polypropylene type

Ref. No. Part No. Description C001 8232 8031 03 VT, CER, 50V, 0.01µF, YF C002 8232 1444 77 VT, ALU, 25V, 470µF, 20%, SME C003 8232 1441 07 VT, ALU, 25V, 100µF, 20%, SME C004 8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME C005 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, 0.01 µF, YF C028 8232 8181 04 VT, CER, 25V, 0.1µF, YF C029 8232 8031 03 VT, CER, 50V, 0.01µF, YF C050 8232 1421 07 VT, ALU, 10V, 100µF, 20%, SME C051 8232 9011 04 VT, PES, 50V, 0.1µF, 5%, AMZ C052 8232 9012 23 VT, PES, 50V, 0.022µF, 5%, AMZ

21

X-24

Ref. No. Part No. Description C053, 054 8232 9014 72 VT, PES, 50V, 0.0047µF, 5%, AMZ C055 8232 1431 06 VT, ALU, 16V, 10µF, 20%, SME C101~401 8232 8015 61 VT, CER, 50V, 560pF, 5%, SL C102~402 8232 1461 05 VT, ALU, 50V, 1µF, 20%, SME 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, 2.2 µF, 20%, SME C108~408 8232 9013 92 VT, PES, 50V, 0.0039µF, 5%, AMZ C109~409 8232 1461 05 VT, ALU, 50V, 1 µF, 20%, SME C110~410 8232 1461 05 VT, ALU, 50V, 1 µF, 20%, SME C112~412 8232 1464 75 VT, ALU, 50V, 4.7 µF, 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 C120~420 N/A 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, 2.2 µF, 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

MISCELLANEOUS

Ref. No. Part No. Description E001 Wire, jumper, IPS-1041-2, F5 E002 Wire, jumper, IPS-1041-3, F7.5 E003 Wire, jumper, IPS-1041-4, F10 E004 Wire, jumper, IPS-1041-5, F12.5 J001 8245 5410 00 Connector, PL, jack, DC-inlet,

YKB31-0012 J002 8245 3080 02 Connector, PI, jack, SBRK, 2S-4 J003 8245 5470 09 Connector, PI, jack, PH, 9P, WHT J004 8245 2260 01 Connector, PL, jack, RCA 4P,

YKC21-3115 J005 8245 3080 06 Connector, PI, jack, SBRK, 6S-4 J006 8245 3080 13 Connector, PI, jack, SBRK, 13S-4 J007 8245 3080 08 Connector, PI, jack, SBRK, 8S-4 J008 8245 3080 09 Connector, PI, jack, SBRK, 9S-4 J009, 010 8245 5280 01 Connector, PI, jack, 1P,

RT-01T-1.0B J011 8245 3080 04 Connector, PI, jack, SBRK, 4S-4 J101 8245 5470 05 Connector, PI, jack, PH, 5P, WHT J201 8245 5471 05 Connector, PI, jack, PH, 5P, RED

Ref. No. Part No. Description J301 8245 5472 05 Connector, PI, jack, PH, 5P, BLU J401 8245 5473 05 Connector, PI, jack, PH, 5P, GRN L001 8242 1420 00 Coil, bias, 150µH 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 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 8276 3640 07 Cable assy, earth lug, D3-kink, L70 X001 8256 0980 00 Resonator, P, CER, 4MHz, EFO

• REGULATOR PCB

Ref. No. Part No. Description

8274 1400 00 PCB assy, Regulator, X-24

B001 8251 9700 02 Plain PCB, Regulator, X-24

Ref. No. Part No. Description U001 8236 0449 10 IC, 220, regulator, µPC2410HF C001, 002 8232 9011 03 Capacitor, VT, PES, 50V, 0.01µF,

AMZV W011 8276 9084 20 Cable, flat, 4P, L200 Y101 8207 0122 04 Holder, cable, 4P, 51048

Abbreviation

ST: Small Outline Package SIP: Single In-line Package 220: TO-220 type SDI: Shrink DIP (dual in-line) SOP: Small Outline Package HT: Horizontal mount taping device V: Vertical mount VT: Vertical mount Taping device PI: Penetrate mount I form (straight) PL: Penetrate mount L form (right angle) PT: Penetrate mount Taping device PIT: Penetrate mount I form Taping device

22

5. CIRCUIT & BLOCK DIAGRAMS

PHONES OUT

(16ohm 20mW)

J5

C151

(+7.1dB)

STR STL

-10dBV

STEREO OUT

L

R

J4

2

1

3

2

1

U105

DTC314TK

3

1K

R154

47K

R153

C155

10/16

-10dBV

1

U5A

4

8

+VCC

-VCC

4556

C154

22P

24K

(+6dB)

R152

3

2

220P

C153

12K

R151

-16dBV 2

1

3

-10dBV

R134A

C152

10/16

1

U4A

22P

8

4

-VCC

+VCC

4560

R150

68K

2

3

C150

220P

30K

R118

R119

2

3

1

-17.1dBV

45

PAN

24K

R116

24K

R117

R133

50KB

C251

MASTER

FADER

22P

R250

U205

1K

R254

C255

10/16

7

U5B

4556

C254

22P

24K

R252

6

5

C253

12K

R251

456

R134B

20KAA

C252

10/16

7

U4B

4560

68K

6

5

C250

220P

R218

R216

123

J3

RLGND

W3

2

1

3

2

1

16

R156

R256

DTC314TK

R255

3

47K

R253

220P

30K

24K

47K

C256

470/10

R155

C156

470/10

+VCC

30K

R219

2

3

1 45

PAN

R233

50KB

24K

R217

PUNCH IN/OUT

2

1

W4

HGND

-10dB

CH1 BAR GRAPH

D103

C114

-5dB

D104

U104

10/16

12K

R120

J6

0dB

D105

OUT11OUT22OUT33OUT44OUT5

AMP

7IN 8

10K

C115

R122

R121

5.1K

30K

R318

24K

R316

JACK PCB (2/2)

+3dB

+6dB

D106

D107

6

9

VCC

BA6124

GND

5

-VCC

10/16

2

3

PAN

R333

50KB

-10dB

CH2 BAR GRAPH

D203

C214

30K

R319

1 45

24K

R317

-5dB

D204

U204

10/16

0dB

D205

OUT11OUT22OUT33OUT44OUT5

AMP

7IN 8

10K

C215

R222

5.1K

R221

12K

X-24

TOP SHIELD

J7

1

AGND

+3dB

+6dB

-10dB

-5dB

0dB

CH3 BAR GRAPH

+3dB

+6dB

-10dB

-5dB

0dB

+3dB

D304

OUT11OUT22OUT33OUT44OUT5

U304

C315

10/16

2

3

PAN

CH4 BAR GRAPH

D305

D306

D307

6

9

VCC

BA6124

GND

AMP

5

7IN 8

-VCC

10K

R322

R321

5.1K 12K

R320

30K

R419

1 45

R433

50KB

24K

R417

D206

D207

D303

6

9

VCC

BA6124

GND

5

-VCC 10/16

10/16

C314

R220

30K

R418

24K

R416

+6dB

D406

D403

D404

D405

6

9

VCC

OUT11OUT22OUT33OUT44OUT5

U404

BA6124

GND

AMP

5

7IN 8

10/16

10K

C415

R422

C414

10/16

R421

5.1K

12K

R420

HGND

H+VCC

H-VCC

C6

C5

47/10

D407

AGND

+VCC

-VCC

C2

C1

47/10

-VCC

AGND

U101D

C113

10/16

-10dBV

1

U2A

8

4

(6.0dB)

+VCC

4560

12K

R113

2

3

-16.0dBV 2

3

R131

20KA

INPUT

FADER

D101

R111

12K

D102

10/16

C109

2

1

3

U101A

7

1

4

+VCC

REC

1

-10dBV C107

47K

10/16

R107

1

U1A

C105

10P

8

4

+VCC

2068

R105

100K

2

3

C103

100/10

5

R130B

TRIM

100KCC

4 6

(0dB <-> 40dB)

1K

R103

MIXER PCB

MIXER / JACK PCBs

213

W1

J1

1

2

3

12K

R101

C101

NON

J101

JACK PCB (1/2)

(BALANCE)

INPUT MIC 1/3

-10dBV <> -50dBV

-VCC

8 9

47K

R115

R114

R112

1

+VCC

U101B

C104

R130A

R102

C102

NON

2

INPUT IMP

6

-VCC

12K

100K

100/10

2

12K

MIC :12Kohm

LINE:22Kohm

A.B

+VCC

12K

R126

R109

30K

R125

47K

10

1

PB

11

879

1 3

1K

R104

3

J102

U103

DTC144EK

3

2

C106

R106

1

12K

R413

INPUT

FADER

C409

U401A

1471

+VCC

4.3K

J304

8 9

6

U401D

A.B

12K

R127

R227

R327

W5

U402

1

U401C

1

C11

22P

1

DTC144EK

4 3

3 2

D2

TRK2

AGND

U8

21345

+VCC

C13

SW2

-VCC

DTA144EK

-VCC

R427

220P

C10

12K

2

3

8

4

R10

+VCC

-VCC

4560

U6A

1

12K

R11

220P

C12

22P

6

5

4560

R12

12K

U6B

7

47K

R13

C14

10/16

5

A.B

WIDE PITCH

CONTROL

(+15% <->-50%)

U9

U10

3 2

1

DTA144EK

750R3750R2750R1750

R4

2 1

2

SW4

SW3

D3

D4

1

TRK3

TRK4

AGND

HGND

H-VCC

-VCC

6

H-VCC

HGND

H+VCC

W8

T

E

U

P

M AB4 AB3 AB2

•••••

AB1 E/D

4

E/D

3

21 3456789

E/D

2

E/D

1

W7

REC

4

REC

3

REC

2

REC

1 PB1 PB2

21345678

PB3 PB4

3

2

R135

10KB

1

4

5

1

3

I

T

P

C

H

1

2

1

••

A

B

1

0

TRK

4 TRK

3

SEL

SW

TRK

2 TRK

1 TRK

4 TRK

3 TRK

2

LED

TRK

1

21 3456789

REC A

B

W6

U11

U12

3 2

1

DTA144EK

750R5750

R6

2

SW5

D5

D6

1

AGND

H-VCC

A.B

REC

LED

+VCC

750

R7

D7

POWER LED

-VCC

47K

R415

C413

10/16

7

U3B

+VCC

4560

12K

R426

6

5

R414

12K

2

R412

100K

U403

DTC144EK

123

D402

3

R410

10/16

INPUT IMP

3

R409

30K

3

2

R425

47K

+VCC

10 11

1

2

U401B

-VCC PB

H+VCC

U7

3 2

1

DTA144EK

2 1

SW1

D1

47K

TRK1

H+VCC

4.3K

R408

+VCC

14Kohm

J404

R431

20KA

D401

R411

12K

10/16

2

REC

1

C408

-10dBV

LINE IN4

+VCC

-10dBV

R313

C108

INPUT

FADER

1

R110

10/16

INPUT IMP

8 9

6

U301D

A.B

47K

R315

C313

10/16

1

U3A

8

4

+VCC

-VCC

+VCC

4560

12K

R331

20KA

10/16

C309

U301A

4

47K

4.3K

R108

14Kohm

12K

2

3

R326

R314

12K

R312

100K

2

1

U303

DTC144EK

+VCC

U301B

R210

10/16

INPUT IMP

-VCC

3

R309

30K

U302

DTC144EK

3

1

-VCC

2

R325

47K

10 11

4 3

5

1

2

U301C

PB

A.B

R310

47K

C308

10/16

4.3K

R208

R308

14Kohm

-10dBV

14Kohm

LINE IN3

INPUT IMP

J204

2

3

1

D301

R311

12K

D302

2

3

71

-VCC

1

REC

C208

-10dBV

LINE IN2

J104

8 9

6

U201D

A.B

47K

R215

C213

10/16

7

U2B

+VCC

4560

12K

R213

1

-VCC

3 2

10P

100K

1

U101C

U102

DTC144EK

R231

20KA

INPUT

FADER

-VCC

10/16

C209

4 3

2 1

5

U201A

1

4

+VCC

A.B

C207

10/16

7

C205

10P

R205

100K

6

TRIM

R230B

4 6

(0dB <-> 40dB)

1K

R203

AGND

J201

6

D201

R211

12K

71

REC

U1B

2068 5

C203

100/10

5

W2

J2

12K

R201

C201

NON

INPUT MIC 2/4

5

R212

123

D202

3

-VCC

47K

R207

R230A

100KCC

213

1

2

3

R202

C202

INPUT IMP

(BALANCE)

-10dBV <> -50dBV

12K

R226

R214

12K

2

100K

1

U203

DTC144EK

-VCC

3

R209

30K

U202

DTC144EK

3

1

-VCC

2

R225

47K

+VCC

10 11

4 3

1

2

U201B

C204

12K

NON

2

MIC :12Kohm

5

U201C

A.B

PB

C206

10P

R206

100K

100/10

9

2

87

1 3

1K

R204

AGND

3

1

J202

LINE:22Kohm

LINE IN1

23

24

R/P / REGULATOR PCBs

R/P PCB

C102 1/50

5

2068

6

R102

C103

100K

R101

1

24K

C202 1/50

R202 100K

R201

1

24K

C302 1/50

R302 100K

R301

1

24K

C402 1/50

R402 100K

R401

1

24K

D+VCC

3

5

7

9

1

11

R40 1M

2

R41 10K

U101B

NON

C105

0.0082(PP) 3

R105

390K

R106

2

470B

REP LEV

1

+VCC

8

3

2068

2

C203

U201A

NON

4

C205

-VCC

0.0082(PP) 3

R205

390K

R206

2

470B

REP LEV

1

5

2068

6 C303 NON

C305

0.0082(PP) 3

R305

390K

R306

2

470B

REP LEV

1

+VCC

8

3

2068

2 C403

U401A

NON

4

C405

-VCC

0.0082(PP) 3

R405 390K 2

R406 470B

REP LEV

1

C20

0.01 R22

47K

C21

0.01 R23

47K

C22

0.01 R24

47K

C23

0.01 R25

47K

C24

0.01 R26

47K

C25

0.01 R27

10K

DGND

PITCH ADJUST

Q4

123

2SK117

R42

3.3K

-VCC

R44 510

LED

SW

PUNCH IN/OUT

3

C101 560P

2

L101

3

C201 560P

2

L201

3

C301 560P

2

L301

3

C401 560P

2

L401

J6

1

A.B

2

REC

3

TRK1

4

TRK2

5

TRK3

6

TRK4

7

TRK1

8 9 10 11 12 13

1 2

DGND

3

DTC144EK

DGND

R10

2

4

6

8

10

R20

47K

R21

10K

+MVCC

U40

U41

1

3

2

1

DTA144EK

TRK2 TRK3 TRK4 A.B

PITCH

J2

7

C104 220P

1

C204 220P

7

U301B

C304 220P

1 3

1

C404 220P

R43

3.3KB

R103 22KB

1 3

REP EQ

C106 47/10

R203 22KB

1 3

REP EQ

C206 47/10

R303 22KB

REP EQ

C306 47/10

R403 22KB

1 3

REP EQ

C406 47/10

D+VCC

D5

C28

0.1

DGND

D+VCC

X-24

TAPE OUT

47/10

123456789

J8

E

/ D 1

J412345678

C117

47/10

C217

C317

C417

47/10

A

E

•

/

B

D

1

2

3

4

-10dBV TRK2TRK3TRK4

12 34 56 78

(-6.9dBV) R118

2K

R119

2K

C118

0.027(PP)

R218

2K

R219

2K

C218

0.027(PP)

R318

2K

R319

2K

C318

0.027(PP)

R418

2K

R419

2K

C418

0.027(PP)

OFF

-VCC 7 8

S2

DOLBY ON/OFF

D4

R38 10K

-VCC

DGND

D-VCC

P

A

•

• M

B

U

3

4

2

T E

TRK1

R120

4.7K 31 2

R220

4.7K 31 2

R320

4.7K 31 2

R420

4.7K

123456

+VCC

AGND

R122

R222

R322

R422

31 2

123

456

AGND

R131 100

1

2

L103

3 2

R134

2.2K

R136

22

OSC LEVEL

L203

3 2

R234

2.2K

R236

22

OSC LEVEL

L303

3 2

R334

2.2K

R336

22

OSC LEVEL

L403

3 2

R434

2.2K

R436

22

OSC LEVEL

0.0047(PP)

R55 33K

R56

4.7K

0.0047(PP)

D3

1

U2

3

TP104

U108

1

BIAS CURR

DTC114TK

1

D103

Q101

1

TP106

1

D203

Q201

1

TP206

1

D303

Q301

1

TP306

1

D403

Q401

1

TP406

D+VCC

C53

C54

2

C4

100/10

D+VCC

R130

2

10K

1

5

D104

C125

4

220P

3

U109

R133 220KB

T101

3

4

2

BIAS ADJ

1

6

C126

0.0015(PP)

78

R231

3

2

100

U208

TP204

1

BIAS CURR

DTC114TK

D+VCC

R230

2

10K

5

1

D204

4

C225 220P

3

U209

R233 220KB

T201

3

4

2

BIAS ADJ

1

6

C226

0.0015(PP)

78

R331

3

2

100

TP304

U308

1

BIAS CURR

DTC114TK

D+VCC

R330

2

10K

1

5

D304

C325

4

220P

3

U309

R333 220KB

T301

2

3

4

2

BIAS ADJ

1

6

C326

0.0015(PP)

78

R431

3

2

100

U408

TP404

1

BIAS CURR

DTC114TK

D+VCC

R430

2

10K

1

5

D404

C425

4

220P

3

U409

R433 220KB

T401

3

4

2

BIAS ADJ

1

6

C426

0.0015(PP)

78

L1 150uH

C55 10/16

+MVCC

Q1

R1 820

C3 100/25

7 8

C2 R8 750

470/25

12 3

1

12 3

1

12 3

POWER SW

J101

1 2 3 4

5 ERASE CURR

TP105

R132

1

AGND

J201

1

2

3

4

5

TP205

R232

1

AGND

J301

1

2

3

4

5

TP305

R332

1

AGND

J401

1

2

3

4

5

TP405

R432

1

AGND

TP1

1

BGND

REGULATOR PCB

U1

W11

J11

1

2

3

4

J1 1 3 2

123

S1

D1

456

AGND

UPC2410

DC IN (12V 600mA)

1

O

C2

U

0.01

2

T

G

I

C1

N

0.01 3

1

2

3

4

10/16

6.2K

12 3

2

R121

3

22KB

C120

NON U106 DTC114TK

6.2K

U206 DTC114TK

6.2K

U306 DTC114TK

6.2K

U406 DTC114TK

ON

C122 180P

R125 15K

0.0018(PP) C123

REC LEVEL

C219

10/16

12 3

6

R221

5

22KB

C220

NON

C222 180P R225

15K

0.0018(PP) C223

REC LEVEL C319 10/16

12 3

2

R321

3

22KB C320

NON

C322 180P R325

15K

0.0018(PP) C323

REC LEVEL

C419

10/16

12 3

6

R421

5

22KB

C420

NON

C422 180P R425

15K

0.0018(PP) C423

R3

C12

20K

22/16

-VCC

R13

4.7

AGND DGNDBGND

R14

4.7

J91J101W1

1

J5

C

S

E

H

N

I

T

E

L

R

D

C124

8

2.2/50

1

2068

U101A

4

C121

0.1/50

-VCC

R123

R124

36K

15K

C224

U201B

2.2/50

7

2068

C221

0.1/50

R223

R224

36K

15K

+VCC

C324

8

2.2/50

1

2068

U301A

4

C321

0.1/50

-VCC

R323

R324

36K

15K

C424

U401B

2.2/50

7

2068

C421

0.1/50

R423

R424

36K

15K

D+VCC

R50 20K

U30

DTC144EK

3

U31

C9

100/10

B

S

O

H

T

I

T

E

O

L

M

D

DTC144EK

100/10

T R A N S P O R T

0.022(PP)

R51

4.7K

2

1

R53 47K

2

1

C50

R52

100/10

3.3K

D+VCC+VCC

C6 220/10

C8

R6 22

C7

R7

220/10

22

D-VCC-VCC

AGND

G N D

R129

6.2K

C128

0.01(PP)

R135

U107

2.2K

DTC114TK

31 2

D-VCC

R229

6.2K

C228

0.01(PP)

R235

U207

2.2K

DTC114TK

31 2

D-VCC

R329

6.2K

C328

0.01(PP)

R335

U307

2.2K

DTC114TK

31 2

D-VCC

R429

6.2K

C428

0.01(PP)

R435

U407

2.2K

DTC114TK

31 2

D-VCC

78

BGND 1

6

2

C52

4

3

Q3

T1

R54

Q2

47 C51

0.1(PP)

D-VCC

R4

10K

R2 390K

8

U3A

3

1

4560

2

4

C5

22/16

6

7

4560

5

U3B

R5 10K

+VCC

REC LEVEL

C119

R

P

E

B

C

1

2

3

4

3

2

1

J7

R407 3.3K R307 3.3K R207 3.3K R107 3.3K

REP EQ

TP101

C107

2.2/50

2

REP EQ

TP201

C207

2.2/50

2

REP EQ

TP301

C307

2.2/50

2

REP EQ

TP401

C407

2.2/50

2

19

P12

20

P13

22

P20

23

P21

24

P22

25

P23

26

K00

27

K01

28

K02

29

K03

34

KE0

35

R80

36

R81

37

R82

38

R83

33

RESET

R28 47K

R29 47K

R30 10K

R31 47K

R32 10k

R33 47K

-VCC

DGND

R109

1

2.2K

R209

1

2.2K

R309

1

2.2K

R409

1

2.2K

U23

TMP47C200BN

123456789

I

P

R

N

L

E

H

A

C

I

Y

B

I

T

TRANSPORT

234

U104

DTC114TK

2

U204

DTC114TK

234

U304

DTC114TK

234

U404

DTC114TK

VDD

R40 R41 R42 R43 R50 R51 R52 R53 R91 R92 P10 R73 R72 R71 R70 R63 R62 R61

R60 TEST VSS

X I N

3 1

13

2

DGND

- +BA

L102

FB-7G

3900P(PP)

31 2

L202

FB-7G 3

3900P(PP)

31 2

L302

FB-7G

3900P(PP)

31 2

L402

FB-7G

3900P(PP)

31 2

D+VCC 42

1 2 3 4 5 6 7 8 40 41 17 16 15 14 13 12 11 10 9 30 21

X O

DGND U T

3 2

X1 4MHz

+MVCC

C29

0.01

J3

C110 1/50

C109

6178

C108

6178

C208

6178

C308

6178

C408

1/50

R110

R108 180

3.3K

D101

D102

C210

1/50

4

C209

1/50

R210

R208

3.3K

180

D201

D202

C310

1/50

C309

1/50

R310

R308

3.3K

180

D301

D302

C410

1/50

C409

1/50

R410

R408

3.3K

180

D401

D402

1 3

51213741

R113

18K

C112

4.7/50

1 3

51213741

R213 18K

C212

4.7/50

1 3

51213741

R313

18K

C312

4.7/50

1 3

51213741

R413

18K

C412

4.7/50

D+VCC

3 DTA144EK 3 DTA144EK 3 DTA144EK 3 DTA144EK

3

DTA144EK

3

DTA144EK 3 DTA144EK 3 DTA144EK

3

Dolby B U102

HA12135AF

Dolby B

U202

HA12135AF

Dolby B

U302

HA12135AF

Dolby B

U402

HA12135AF

1

DTA144EK 1

DTA144EK

+VCC

C116

R116

47/10

2109111416

240

6 8

C114 47/10

5

R117

2K

C115

C113

47/10

0.22/50

D+VCC

R114

-VCC

20K

U105

R115

1

20K

2

3

+VCC

C216

R216

2109111416

47/10

240

6 8

C214 47/10

5

R217

2K

C215

C213

47/10

0.22/50

D+VCC

R214

-VCC

20K

U205

R215

1

20K

3

2

+VCC

C316

R316

47/10

2109111416

240

6 8

C314 47/10

5

R317

2K

C315

C313

47/10

0.22/50

D+VCC

R314

-VCC

20K

U305

R315

1

20K

3

2

+VCC

C416

R416

47/10

2109111416

240

6 8

C414 47/10

5

R417

2K

C415

C413

47/10

0.22/50

D+VCC

R414

-VCC

20K

U405

R415

1

20K

3

2

R11

2

U4

2

3

U5

2

4

U6

2

5

1

U7

2

D-VCC

R12

2

U8

2

3

U9

2

D+VCC

4

U10

2

5

U11

2

U15

2

U16

2

U17

2

U18

2

1

U12

2

3

DTA144EK

1

U13

3

2

DTA144EK

1

U14

3

2

DTA144EK

D-VCC

1

U19

3

2

DTA144EK

1

U20

3

2

DTA144EK

1

U21

3

2

DTA144EK

1

U22

3 2

DTA144EK

BLOCK DIAGRAM

LINE IN/INSERT

-10dBV

1

TIP: RTN RING: SEND

REC

A. B REC

LINE OUT

PAN

PB

INPUT

FADER

REC TRK 1

REC

A. B REC

PB

MASTER

FADER

-10dBV

L R

LINE IN/INSERT

-10dBV

LINE IN/INSERT

-10dBV

LINE IN/INSERT

-10dBV

MIC IN

-10dBV <--> -50dBV

1/3

2

TIP: RTN RING: SEND

3

TIP: RTN RING: SEND

4

TIP: RTN RING: SEND

A. B REC

REC

A. B REC

REC

A. B REC

REC

PAN

PB

INPUT

FADER

REC TRK 2

REC

A. B REC

BARGRAPH

PB

PAN

PB

INPUT

FADER

REC TRK 3

REC

A. B REC

PB

PAN

PB

INPUT

FADER

REC TRK 4

REC

A. B REC

PB

PHONES OUT

16 ohm 20mW

1

2 3

4

TAPE OUT

-10dBV

1 2 3 4

2

3

1

TRIM

25

MIC IN 2/4

-10dBV <--> -50dBV

2

3

1

TRIM

X-24

FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A.

Fostex X-24 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual