Sony HCD-VX5AJ Service Manual

HCD-VX5A/VX5AJ/VX7A

SERVICE MANUAL

HCD-VX5A/VX5AJ/VX7A is the Amplifier, Video CD player, Tape Deck and Tuner section in MHC-VX5A/VX5AJ/VX7A.

Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.

Photo: HCD-VX7A

CD Section

Tape deck Section

E Model

HCD-VX5A/VX7A

Tourist Model

HCD-VX5AJ

Model Name Using Similar Mechanism HCD-GRX50/RXD7 CD Mechanism Type CDM38L-5BD34L Base Unit Name BU-5BD34L Optical Pick-up Name Model Name Using Similar Mechanism HCD-GRX50/RXD7 Tape Transport Mechanism Type TCM-230AWR2

KSS-213D/Q-NP

SPECIFICATIONS

– Continued on next page –

MICROFILM

MINI Hi-Fi COMPONENT SYSTEM

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 3

2. GENERAL .................................................................. 6

3. DISASSEMBLY ........................................................ 10

4. TEST MODE............................................................. 13

5. MECHANICAL ADJUSTMENTS ...................... 16

6. ELECTRICAL ADJUSTMENTS

DECK Section................................................................ 16

CD Section ..................................................................... 19

VIDEO Section .............................................................. 20

7. DIAGRAMS

7-1. Block Diagram – CD SERVO Section – ...................... 21

7-2. Block Diagram – AUDIO/VIDEO CD Section – ........ 23

7-3. Block Diagram – TAPE DECK Section –.................... 25

7-4. Block Diagram – MAIN Section –............................... 27

7-5. Block Diagram – DISPLAY/KEY CONTROL/

POWER SUPPLY Section – .......................................... 29

7-6. Note for Printed Wiring Boards and

Schematic Diagrams ...................................................... 31

7-7. Printed Wiring Board – BD Board– ............................. 33

7-8. Schematic Diagram – BD Board– ............................... 35

7-9. Schematic Diagram – VIDEO Board (1/2) – .............. 37

7-10. Schematic Diagram – VIDEO Board (2/2) – .............. 39

7-11. Printed Wiring Board –

VIDEO Board –............................................................. 41

7-12. Printed Wiring Boards – CD MOTOR Section –......... 45

7-13. Schematic Diagram – CD MOTOR Section – ............ 47

7-14. Printed Wiring Board – AUDIO Board –..................... 49

7-15. Schematic Diagram – AUDIO Board –....................... 51

7-16. Printed Wiring Board – LEAF SW Board –................. 53

7-17. Schematic Diagram – LEAF SW Board – .................. 53

7-18. Printed Wiring Board – MAIN Board – ....................... 55

7-19. Schematic Diagram – MAIN Board (1/4) – ................ 57

7-20. Schematic Diagram – MAIN Board (2/4) – ................. 59

7-21. Schematic Diagram – MAIN Board (3/4) – ................. 61

7-22. Schematic Diagram – MAIN Board (4/4) – ................. 63

7-23. Printed Wiring Board – PANEL Board – ..................... 65

7-24. Schematic Diagram – PANEL Board – ........................ 67

7-25. Printed Wiring Board – CD SW Board – ..................... 69

7-26. Schematic Diagram – CD SW Board – ...................... 70

7-27. Printed Wiring Board

– TRANSFORMER Board– .......................................... 71

7-28. Schematic Diagram

– TRANSFORMER Board – ......................................... 71

7-29. Printed Wiring Board – SURROUND Board – ........... 73

7-30. Schematic Diagram – SURROUND Board – .............. 74

7-31. IC Pin Function Description .......................................... 80

8. EXPLODED VIEWS............................................... 90

9. ELECTRICAL PARTS LIST .............................. 99

– 2 –

SECTION 1

SERVICING NOTES

SELF-DIAGNOSIS

This unit is equipped with a self-diagnosis function. The function is used for diagnosing the conditions of the circuits of the VIDEO board. The circuits can be determined if normal or abnormal by the lighting of D502 of the VIDEO board.

Lighting of D502

When lit : Operates normally Blinks repeatedly : The circuit may be faulty.

– VIDEO Board (Side A) –

IC505

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

D502

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

The following caution label is located inside the unit.

– 3 –

MODEL IDENTIFICATION – Rear Panel –

PART N o.

MODEL PART No.

VX5A : Saudi Arabia model 4-215-639-0π VX5A : Malaysia and Singapore models 4-215-639-1π VX5A : Taiwan model 4-215-639-2π VX5A : E model 4-215-639-3π VX5A : Thai model 4-215-639-4π VX5A : Hong Kong model 4-215-639-5π VX5A : Indonesia model 4-215-639-6π VX5AJ: Saudi Arabia model 4-215-639-7π VX5AJ: Tourist model 4-215-639-8π VX5AJ: E model 4-215-639-9π VX7A : Saudi Arabia model 4-215-640-0π VX7A : Malaysia and Singapore models 4-215-640-1π VX7A : E, Indonesia and Thai models 4-215-640-4π

– 4 –

Remove the Case.

Pull-out the disc tray.

Turn the cam to the direction of arrow.

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS’ OFF.

NOTE FOR INSTALLATION (ROTARY ENCODER)

BU cam

Section A

Groove

Note:When attaching the Base unit, Insert th section A into the groove of BU cam.

Note:When attaching the BU cam, engage the Rotary encoder switch as shown in the figure.

– 5 –

• LOCATION OF CONTROLS

– Front View –

SECTION 2

GENERAL

!¢ !∞

!§

!¶ !• !ª @º

9 0 !¡ !™8 !£

2 3 4 5 6 7

1 1/u button 2 (STANDBY) POWER SAVE, DEMO button 3 DISC 1 button 4 DISC 2 button 5 DISC 3 button 6 DISC SKIP, EX-CHANGE button

@¡ @™

@£ @¢

@∞ @§ @¶ @•

#¢#£#™#¡#º@ª

7 § button 8 9 TAPE A button and indicator 9 ( TAPE A button and indicator 0 9 TAPE B button and indicator !¡ ( TAPE B button and indicator !™ p button !£ ^ CD button and indicator !¢ EFFECT indicator !∞ SYNC EQ indicator !§ FUNCTION button !¶ ECHO LEVEL knob !• MIC LEVEL knob !ª MIC 1 jack @º MIC 2 jack @¡ VIDEO CD indicator @™ PBC indicator @£ PBC OFF indicator @¢ TUNER BAND button @∞ REC PAUSE/START button and indicator @§ HI-DUB button @¶ CD SYNC button @• PHONE jack @ª CD LOOP button #º CD FLASH button #¡ – 0 button and indicator #™ JOG dial and indicator #£ + ) button and indicator #¢ VOLUME knob

– 6 –

– Front View –

#∞ #ª

$∞ $§ $¶

#§ #¶ #• $º $¡$™ $£ $¢

%•%§%¢%∞%™

#∞ EFFECT button (VX7A)

EDIT/DIRECTION TUNER MEMORY button (VX5A/VX5AJ)

#§ FILE SELECT button (VX7A)

PLAY MODE, DOLBY NR button (VX5A/VX5AJ)

#¶ GEQ CONTROL button (VX7A)

$• $ª

%º %¡

%ª%¶%£

REPEAT STEREO/MONO button (VX5A/VX5AJ)

#• P FILE MEMORY button (VX7A)

FILE SELECT button (VX5A/VX5AJ)

#ª SELECT button $º RETURN button $¡ PREV button $™ NEXT button $£ CD NON-STOP button and indicator $¢ KARAOKE PON/MPX button $∞ PLAY MODE, DOLBY NR button

(VX7A)

$§ EDIT, DIRECTION, TUNER MEMORY

button (VX7A)

$¶ REPEAT, STEREO/MONO button (VX7A) $• SYNC BASS H indicator $ª SYNC BASS L indicator %º SYNC EQ button %¡ SYNC BASS button %™ DISPLAY button %£ CLOCK TIMER SET button %¢ TIMER SELECT button and indicator %∞ SPECTRUM ANALYZER button %§ GROOVE button and indicator %¶ ENTER/NEXT button and indicator %• DBFB button %ª CINEMA SPACE/SURROUND button

– 7 –

– Rear View –

4 5

6 7 8

2 3

1 S VIDEO jack 2 SYSTEM SELECT switch 3 VIDEO OUT jack 4 CD DIGITAL OUT, OPTICAL connector 5 VIDEO (AUDIO) IN jack 6 MD IN jack 7 MD OUT jack 8 SUPER WOOFER jack 9 FM ANTENNA terminals 0 AM ANTENNA terminals !¡ SURROUND SPEAKER terminals (VX7A) !™ SPEAKER terminals !£ VOLTAGE SELECTOR switch

(EXCEPT Thai model)

!£!™!¡

– 8 –

This section is extracted from instruction manual.

– 9 –

SECTION 3

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

COVER

cover

screw

two screws (case 3TP2) (3

(case 3TP2) (3

12)

three screws (BVTP3

screw (case 3TP2) (3

two screws (case 3TP2) (3

12)

LOADING PANEL ASS’Y

Turn the cam-in the direction of the arrow

Pull-out the disc tray.

loading panel ass’y

– 10 –

FRONT PANEL SECTION

)

screw

10)

front panel section

(BVTT3

wire (flat type) (15 core) (32 cm) (CN303)

screw (BVTT3

two lugs

screw (BVTP3

10)

lug

wire (flat type) (23 core) (23 cm) (CN501)

screw (BVTT3

wire (flat type) (17 core)

two screws (BVTT3

(CN304)

VIDEO BOARD, CD MECHANISM DECK SECTION (CDM38L-5BD34L)

Remove the CD mechanism deck (CDM38L-5BD34L) in the direction of arrows

– B.

screw (BVTP3

10)

wire (flat type)

(13 core) (17 cm) (CN503)

two screws (BVTP3

chassis

screw (BVTP3

VIDEO board

wire (flat type) (23 core) (18 cm) (CN501)

screw (BVTP3

– 11 –

two connectors (CN392, 393)

10)

TAPE MECHANISM DECK SECTION (TCM-230AWR2)

Open two cassette lids.

Push the cassette lid.

three screws (BVTP2.6

two screws (BVTP2.6

tape mechanism deck section (TCM-230AWR2)

MAIN BOARD

connector (CN952)

Push the cassette lid.

connector (CN953)

two screws (BVTP3

wire (flat type)

13 core (15 cm): EXCEPT Thai

( )

15 core (15 cm): Thai

(CN371)

five screws (BVTP3

5

screw (BVTP3

VX7A

Remove the MAIN board in the direction of the arrow.

– 12 –

two screws (BVTP3

connector (CN403)

SECTION 4

TEST MODE

[MC Cold Reset]

• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

1. Turn the power ON or set to the DEMO mode.

2. Press three buttons of p , [ENTER/NEXT], and 1/u simulta-

neously.

3. The set is reset, and displays “COLD RESET”, then becomes

DEMO mode.

[MC Hot Reset]

• This mode resets the set with the preset data kept stored in the memory. The hot reset mode functions same as if the power cord is plugged in and out.

Procedure:

1. Turn the power ON or set to the DEMO mode.

2. Press three buttons of p , [ENTER/NEXT], and [DISC1] si-

multaneously.

3. The set is reset, and becomes standby state.

[Change-over the AM Tuning Interval] (EXCEPT Saudi Arabia model)

• The AM tuning interval can be changed over 9 kHz or 10 kHz.

Procedure:

1. Press the 1/u button to turn the power ON.

2. Select the function “TUNER”, and press the [TUNER/BAND]

button to select the BAND “AM (MW)”.

3. Press the 1/u button to turn the power OFF.

4. Press the [ENTER/NEXT] and 1/u buttons simultaneously,

and the display on the fluorescent indicator tube changes to “AM 9 k STEP” or “AM 10 k STEP”, and thus the tuning interval is changed over.

[CD Delivery Mode]

• This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press the 1/u button to turn the power ON.

2. Press the [CDLOOP] and 1/u buttons simultaneously.

3. A message “LOCK” is displayed on the fluorescent indicator

tube, and the CD delivery mode is set.

[LED and Fluorescent Indicator Tube All Lit, Key Check Mode]

Procedure:

1. Press three buttons of p , [ENTER/NEXT], and [DISC2] si-

multaneously.

2. LEDs and fluorescent indicator tube are all turned on.

Press the [DISC2] button, and the key check mode is activated.

3. In the key check mode, the fluorescent indicator tube displays

“K 0 J0 V0”. Each time a button is pressed, “K” value increases. However , once a button is pressed , it is no longer taken into account. “J” value increases like 1, 2, 3 ... if turn the JOG dial clockwise, or it decreases like 0, 9, 8 ... if turn the JOG dial counterclockwise. “V” value increases like 1, 2, 3 ... if turn the [VOLUME] dial clockwise, or it decreases like 0, 9, 8 ... if turn the JOG dial counterclockwise.

4. To exit from this mode, press three buttons in the same man-

ner as step 1, or disconnect the power cord.

– 13 –

[Aging Mode]

This mode can be used for operation check of tape deck section. Tape deck section work in parallel.

• If an error occurred: The aging operation stops and display then status.

• If no error occurs: The aging operation continues repeatedly.

Procedure:

1. Load the tapes into the decks A and B respectively.

2. Press the [FUNCTION] button to select the function “CD”.

3. Press the [PLAYMODE] button to set the “ ALL DISCS” mode,

and press the [REPEAT] button to “REPEAT” off.

4. Press three buttons of p , [ENTER/NEXT], and [DISCSKIP/

EX-CHANGE] simultaneously.

5. The aging mode is activated, if the indicator of disc tray num-

ber on the fluorescent indicator tube is blinking.

6. To exit from the aging mode, press the 1/u button to turn the

power OFF and operate the cold reset. (Refer to the “MC Cold Reset”)

1. Display at the Aging Mode

• Display operating state of tape deck section alternately.

• If an error occurred, stop display.

2. Tape Deck Section

• The sequence during the aging mode is following as below.

• If an error occurred, stop display that step.

Aging mode sequence (Tape deck section) :

Rewind the tape A and B

“T APE A A G-1”

Shut off

FWD play the tape A

“T APE A A G-2”

2 minutes

Fast forward the tape A

“T APE A A G-3”

Shut off or 20 seconds

REV play the tape A

“T APE A A G-4”

2 minutes

Rewind the tape A

“T APE A A G-5”

Shut off

FWD play the tape B

“TAPE B AG-2”

2 minutes

Fast forward the tape B

“TAPE B AG-3”

Shut off or 20 seconds

REV play the tape B

“T APE A A G-4”

2 minutes

Rewind the tape B

“TAPE B AG-5”

Shut off

Note: “TAPE * AG-*” is display of each step.

– 14 –

[VIDEO CD Color-bars Mode]

On this mode, the data of the color-bars signal as a picture signal and the 1 kHz sine wave signal as a sound signal are output by the mechanism controller (IC502) for the video CD signal check. When measurement of the voltage and waveform on the VIDEO board, perform it in this mode. For reference, the color-bars signal can be observed at J302 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD (AUDIO) OUT) using an oscilloscope.

Procedure:

1. Short the both ends of the land of SL503 of the VIDEO board.

2. Turn the power on. Press the [FUNCTION] button to select CD.

3. The color-bars appears when the CD is in stop status, and it disappears when the CD goes in play status.

4. After measuring, remove the lead wire connected.

– VIDEO board (Side A) –

D502

SL501

SL503

SL502

– VIDEO board (Side B) –

SL503

CN503

SL502

SL501

IC502

CN501

IC505

– 15 –

SECTION 5

MECHANICAL ADJUSTMENTS

SECTION 6

ELECTRICAL ADJUSTMENTS

Precaution

1. Clean the following parts with a denatured alcohol-moistened swab:

record/playback heads pinch rollers erase head rubber belts capstan idlers

2. Demagnetize the record/playback head with a head demagnetizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

Torque Measurement

Mode

FWD FWD

back tension

REV REV

back tension FF/REW

FWD tension

REV tension

Torque meter

CQ-102C

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

Meter reading

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.03 – 0.08 oz • inch)

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.03 – 0.08 oz • inch)

71 to 143 g • cm

(0.99 – 1.99 oz • inch)

100 g or more

(3.53 oz or more)

100 g or more

(3.53 oz or more)

DECK SECTION

0 dB = 0.775 V

1. Demagnetize the record/playback head with a head demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to the parts adjust.

4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.)

6. The adjustments should be performed for both L-CH and RCH.

7. Switches and controls should be set as follows unless otherwise specified.

8. Set to the DOLBY NR OFF.

9. Set to the test mode. (1) Press the 1/u button to turn the power ON. (2) Select the function “TAPE A or B”. (3) Press the button of p , [ENTER/NEXT], and [DISC3]

simultaneously, to set the tape deck test mode and blink the indicator of disc tray number on the fluorescent indicator tube.

(4) To exit from the test mode, press the 1/u button.

• Test Tape

Tape Signal Used for

P-4-A100 10 kHz, – 10 dB Azimuth Adjustment

WS-48B 3 kHz, 0 dB Tape Speed Adjustment

P-4-L300 315 Hz, 0 dB Level Adjustment

Record/Playback Head Azimuth Adjustment

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback (FWD)

test tape P-4-A100 (10 kHz, – 10 dB)

MAIN board MD OUT jack (J101) L-CH, R-CH

level mete

set

+ –

– 16 –

2. Turn the adjustment screw and check output peaks. If the peaks

+ –

set

test tape WS-48B (3 kHz, 0 dB)

MAIN board MD OUT jack (J101) L-CH, R-CH

frequency counter

do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.

Tape Speed Adjustment DECK B

Mode: Playback

Output level

within 1dB

L-CH peak

R-CH peak

within 1dB

Screw position

L-CH peak

Screw position

R-CH peak

3. Mode: Playback

MAIN board test tape P-4-A100 (10 kHz, – 10 dB)

L-CH

set

R-CH

in phase 45°90°135°180

MD OUT jack (J101)

L-CH

R-CH

waveform of oscilloscope

good

oscilloscope

wrong

4. Repeat step 1 to 3 in playback (REV) mode.

5. After the adjustments, apply suitable locking compound to the pats adjusted.

1. Insert the WS-48B into the deck B.

2. Press the ( button on the deck B.

3. Press the [HI-DUB] button in playback mode. Then at HIGH speed mode.

4. Adjust RV1001 on the LEAF SW board do that frequency counter reads 6,000 ± 180 Hz.

5. Press the [HI-DUB] button. Then back to NORMAL speed mode.

6. Adjust RV1002 on the LEAF SW board so that frequency counter reads 3,000 ± 90 Hz.

Adjustment Location: LEAF SW board Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)

(WS-48B)

Playback level Adjustment DECK A DECK B

Procedure:

Mode: Playback

test tape P-4-L300 (315 Hz, 0 dB)

set

MAIN board MD OUT jack (J101) L-CH, R-CH

level meter

+ –

Adjustment Location:Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

forward

reverse

Deck A is RV311 (L-CH) and RV411 (R-CH), Deck B is RV301 (L-CH) and RV401 (R-CH) so that adjustment within specification values as follows.

Specification Values:

J101 PB level: 301.5 to 338.3 mV (– 8.2 to – 7.2 dB) level difference between the channels: within ± 0.5 dB

Adjustment Location: AUDIO board

– 17 –

REC Bias Adjustment DECK B

Procedure:

1. Mode: Record FUNCTION: VIDEO

MAIN board VIDEO (AUDIO) IN jack (J101) L-CH, R-CH



50 mV (– 23.8 dB)

 

600

Ω

AF OSC

1) 315 Hz

2) 10 kHz

attenuator

2. Mode: Playback

set

blank tape CN-123

Specification values:

J101 PB level: 47.2 to 53.0 mV (– 24.3 to – 23.3 dB)

Adjustment Location: MAIN board

– MAIN BOARD (Conductor Side) –

RV301

IC301

RV351

REC LEVEL

VIDEO (AUDIO) IN

J101

MD OUT

(L/R)

recorded portion

set

MAIN board MD OUT jack (J101) L-CH, R-CH

level meter

+ –

3. Confirm playback the signal recorded in step 1 become specification values as follows. If these values are out of specification values, adjust the R V341 (L-CH) and RV441 (R-CH) on the AUDIO board to repeat steps 1and 2.

Specification values: Playback output of 315 Hz to playback

output of 10 kHz: ± 0.5 dB

Adjustment Location: AUDIO board

REC Level Adjustment DECK B

Procedure:

1. Mode: Record FUNCTION: VIDEO

MAIN board VIDEO (AUDIO) IN jack (J101) L-CH, R-CH

AF OSC

315 Hz, 50 mV (– 23.8 dB)

Ω

attenuator

600

blank tape CS-123

set

– AUDIO BOARD (Component Side) –

RV441

RV401

RV301





PB LEVEL

– DECK B –



IC602

RV341



REC BIAS

CN601

RV311



PB LEVEL

– DECK A –

– LEAF SW BOARD (Component Side) –

TAPE SPEED



(NORMAL) (HIGH)

RV1002



RV1001

CN1001

RV411





2. Mode: Playback

recorded portion

set

MAIN board MD OUT jack (J101) L-CH, R-CH

level meter

+ –

3. Confirm playback the signal recorded in step 1 become specification values as follows. If these values are out of specification values, adjust the R V301 (L-CH) and R V351 (R-CH) on the MAIN board to repeat steps 1 and 2.

– 18 –

CD SECTION

)

+ –

TP508 (27 MHz)

VIDEO board

frequency counter

Note:

1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10 MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S-Curve Check

oscilloscope

BD board

TP (FE) TP (VC)

Procedure:

1. Connect oscilloscope to TP (FE).

2. Connect between TP (FE1) and TP (VC) by lead wire.

3. Connect between TP (AGCCON) and TP (GND) by lead wire.

4. Turn the power ON.

5. Load a disc (YEDS-18) and actuate the focus search. (In con-

sequence of open and close the disc tray, actuate the focus search)

6. Cofirm that the oscilloscope waveform (S-curve) is symmetri-

cal between A and B. And confirm peak to peak level within 4 ± 1 Vp-p.

S-curve waveform

+ –

symmetry

E-F Balance (1 Track Jump) Check

oscilloscope

BD board

TP (TE) TP (VC)

+ –

Procedure :

1. Connect oscilloscpe to TP (TE) and TP (VC).

2. Turn the power ON.

3. Load a disc (YEDS-18) and playback the number five track.

4. Press the ^ (CD) button. (Becomes the 1 track jump mode)

5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.

1 track jump waveform

level = 1.3

Specified level: × 100 = less than ± 22%

0.6 Vp-p symmetry

A B

center of waveform

A (DC voltage

6. After check, remove the lead wire connected in step 1.

VIDEO SECTION

Frequency Adjustment

Connection:

Procedure:

1. Connect the frequency counter to TP508 (27 MHz) on VIDEO board.

2. Turned power switch on.

3. Press the [FUNCTION] button to select the CD.

4. Adjust CT503 on the VIDEO board so that the frequency counter reading 27.0 MHz ± 80 Hz at stop status.

Adjustment Location:

– VIDEO Board (Side A) –

IC507

within 4

1 Vp-p

7. After check, remove the lead wire connected in step 2 and 3.

Note: • Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the brightness to obtain best waveform.

RF Level Check

oscilloscope

BD board

TP (RF) TP (VC)

+ –

Procedure:

1. Connect oscilloscope to TP (RF).

2. Connect between TP (AGCCON) and TP (GND) by lead wire.

3. Turn the power ON.

4. Load a disc (YEDS-18) and press the ^ button to play.

5. Confirm that the oscilloscope waveform is clear and check RF signal level is correct or not.

6. After check, remove the lead wire connected in step 2.

Note: Clear RF signal waveform means that the shape “≈” can be clearly

distinguished at the center of the waveform.

VOLT/DIV: 200 m TIME/DIV: 500 ns

Checking Location:

– BD BOARD (Side B) –

TP (AGCCON)

TP (RF)

IC102

TP (TE)

TP (FE)

IC103

TP (VC)

TP (GND)

TP (FE1)

IC101

IC505

TP508

(27 MHz)

CT503

VIDEO

Frequency

Adjustment

level:

1.45

0.3 Vp-p

– 19 – – 20 –

HCD-VX5A/VX5AJ/VX7A

7-1. BLOCK DIAGRAM – CD SERVO Section –

DETECTOR

OPTICAL PICK-UP

(KSS-213D/Q-NP)

I-V AMP

SECTION 7

DIAGRAMS

CTL2

CTL1

FILTER

RF AMP,

CD A+5V

FOCUS/TRACKING ERROR AMP

F I-V AMP

E I-V AMP

IC103

SUMMING

AMP

RF EQ

AMP

FOCUS

ERROR AMP

TRACKING

ERROR AMP

RFO

HOLD SW

CTL2

DIGITAL SIGNAL PROCESSOR

IC101 (1/2)

RFAC

49 48

ASYMMETRY

CORRECTOR ASYI ASYO

DIGITAL

CLV

PROCESSOR

MDP

25 76 77

53 55

FILI

PCO

FILO

CLTV

DIGITAL PLL

TO SERVO AUTO

SEQUENCER

CPU INTERFACE

SENSE

DATA

CLOK

XLAT

125254

XPCK

EFM

DEMODULATOR

INTERNAL BUS

SUBCODE

PROCESSOR

EXCK

SCOR

SBSO

SQCK

SQSO

79 801574 6 5 10 111368 3

WFCK

XUGF

GFS

EMPH

32K

RAM

ERROR

CORRECTOR

16 69

C4M

CLOCK

GENERATOR

DIGITAL

INTERFACE

MUTE

D/A

XTSL

DIGITAL

OUT

XTAO

XTAI

PCMD

BCK LRCK C2PO

WDCK

DOUT

MD2

XRST

72 71

66 67 65 14 17

IC104

DATA

BCK LRCK C2PO

CD A+5V

OPTICAL

TRANSCEIVER

IC381

MCLK

33.8MHz

DATA, BCK,

LRCK, C2PO

CD DIGITAL OUT

OPTICAL

(Page 23)

(TRACKING)

(FOCUS)

LASER DIODE

2-AXIS DEVICE

M101

(SPINDLE)

M102

(SLED)

AUTOMATIC

POWER CONTROL

Q101

12 11

14 13

APC LD

AMP

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC102

CH4OUTF CH4OUTR

CH3OUTF CH3OUTR

CH2OUTF CH2OUTR

CH1OUTF CH1OUTR

MOTOR

DRIVE

COIL

DRIVE

COIL

DRIVE

MUTE

CH4SIN

CH3FIN

CH3RIN

CH2FIN

CH2RIN

CH1FIN

CH1RIN

APC PD

AMP

24 23

5 6

2 3

LDON

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

PWM GENERATOR

FOCUS/TRACKING/SLED

40 41 39 43

RFDC

A/D

CONVERTER

FOCUS/

TRACKING/SLED

SERVO DSP

SSTP

CD A+5V

MIRR,

DFCT, FOK

DETECTOR

SERVO

INTERFACE

SERVO AUTO

SEQUENCER

TO CPU INTERFACE

S101

(LIMIT)

FOK

MIRR

DFCT

COUT

SCLK

3 5 4 1 18 36 37 10

SCOR

SENSE

DSP CLK

DSP DATA

DSP LATCH

LDON

SENSE CLK

28 2

DISC IN DETECT

LEVEL SHIFT

22 20 21

SUBQ CLK

SUBQ DATA

CD MECHANISM CONTROLLER

IC502 (1/2)

DISC TRAY

SENSOR

IC703

Q701

60 61 71 70 69 68 59

DISC-SENS

TBL-L

TBL-R

65 63 67

SENSOR

IC702

LOAD-OUT

LOAD-IN

DISC TRAY SLIDE MOTOR DRIVE

DISC TRAY TURN MOTOR DRIVE

3 6

TBL-SENS

FIN RIN

IN1 IN2

(OPEN/CLOSE DET)

OUT-OPEN

IC801

MOTOR

DRIVE

IC701

MOTOR

DRIVE

S801

OPEN

SYSTEM CONTROLLER

IC501 (1/4)

OUT1

OUT2

OUT1

OUT2

DSP MUTE

DEVICE RESET

DISC TRAY

ADDRESS DETECT

ROTARY

ENCODER

S811

4 2 3

ENC1

ENC2

(DISC TRAY SLIDE)

(DISC TRAY TURN)

CTRL1 CTRL2

XRESET

ENC3

M801

M701

XRST

CTL1 CTL2

RESET

(Page 24)

11 27

77 12

• SIGNAL PATH : CD PLAY : DIGITAL OUT

– 21 – – 22 –

7-2. BLOCK DIAGRAM – AUDIO/VIDEO CD Section –

MCLK 33.8MHz

(Page 22)

DATA, BCK, LRCK, C2PO

DATA

BCK

LRCK

C2PO

LEVEL SHIFT

IC501

MPEG VIDEO/AUDIO DECODER,

VIDEO SIGNAL PROCESSOR

IC505

CD-DATA

CD-BCK

CD-LRCK

CD-C2PO

MA0 – MA10

58 – 56, 54, 52 – 50, 48, 46 – 44 10 – 15, 17, 19, 21, 23 – 29

ADDRESS BUS

CD-ROM

INTERFACE

CIRCUIT

A0 – A10

MPEG

SYSTEM

DECODER

D-RAM/ROM INTERFACE

MD0 – MD15

MPEG AUDIO

DECODER

MPEG VIDEO

DECODER

D0 – D15

MCE

38 42 40

PROCESS

CIRCUIT

RAS0

MWE

VIDEO

CAS

AUDIO

INTERFACE

CIRCUIT

PGIO2/VSYNC/CSYNC

HRDY

RESET

113

DA-DATA

DA-BCK

DA-LRCK

DA-XCLK

Y-OUT C-OUT

VCK-IN

CPU INTERFACE

HSEL

HD-OUT

HD-IN

HINT

114 121

112

119

HCD-VX5A/VX5AJ/VX7A

DIGITAL FILTER, D/A CONVERTER

IC509

(Page 27)

CD-L

• SIGNAL PATH

(Page 22)

RESET

: CD PLAY (AUDIO) : CD PLAY (VIDEO)

XT1

DIGITAL

FILTER,

NOISE SHAPER CIRCUIT

D/A

CONVERTER

MODE

CONTROL

MD 9 724 1

VOUTL

LOW-PASS

FILER

RSTB 10

VOUTR

LOW-PASS

FILER IC101

R-CH

CT503

(27MHz)

DATA

BCK

LRCK

768FSO

384FSO

MCKO

INPUT

INTERFACE

CIRCUIT

TIMING CONTROL/

CLOCK GENERATOR

XT2

X503

27MHz

110 111 108

69 75

106

HCK

117

BUFFER

Q502

DATA

CLK

OSC

BUFFER

IC504

VIDEO FREQUENCY

16 – 19, 22 – 26

D-RAM

IC507

(Page 29 )

A0 – A8

DATA, CLK

UCAS

LCAS

14 132928

RAS

DQ1 – DQ16

D0 – D15

DATA BUS

PROGRAM ROM

A0 – A10

12 – 5, 27, 26, 23

A0 – A10

IC506

13 – 15, 17 – 212 – 5, 7 – 10, 31 – 34, 36 – 39

D0 – D7

O0 – O7

D8 – D14

25, 4, 28, 29, 3, 2, 30

A11 – A17

NTSC

AUTO

PAL

S501

SYSTEM SELECT

(SELF DIAGNOSIS)

DATA

CLK

D502

BUS

CLK1

DATA1O

31 32

DATA1I

CL680 SEL

21 20

CL680 HINT CL680 HRDY

CL680 RESET

CD MECHANISM CONTROLLER

IC502 (2/2)

NT/PAL

TEST LED

CLK DATA

DF LATCH

J301

S VIDEO OUT

B.P.F.

VIDEO

BUFFER

Q301

VIDEO

BUFFER

Q304

VIDEO

BUFFER

Q303

SHARPNESS

FILTER

Q302

VIDEO

BUFFER

Q307

VIDEO

BUFFER

Q308

Y/C MIX

Q310

VIDEO AMP IC401 (1/2)

VIDEO AMP IC401 (2/2)

VIDEO MUTE

Q453

VIDEO MUTE

Q454

3 4

J302

VIDEO OUT

SHARPNESS

CONTROL SWITCH

Q306

– 24 –

VMUTE

XOUT

SHARPNESS

XIN

X501

10MHz

1315

– 23 –

HCD-VX5A/VX5AJ/VX7A

7-3. BLOCK DIAGRAM – TAPE DECK Section –

HP101

(PLAYBACK)

L-CH

R-CH R-CH

HRPE101 (1/2)

(RECORD/PLAYBACK)

L-CH

R-CH R-CH

DECK PROCESS

DECK A/B SELECT, PB/REC EQ AMP,

DOLBY NR AMP, ALC, AMS

IC301

DOLBY PASS

NORM/HIGH

PB A/B

120

R-CH

NR ON/OFF

BIAS ON/OFF

RM ON/OFF

L.P.F.

BUFFER

AMS

CIRCUIT

REC/PB/PASS

LM ON/OFF

MAOUT

MSIN

MSOUT

RIN (L)

ALC (L)

DOLBY NR

ALC

ROUT (L)

ALC

35 34

AMP

CIRCUIT

IN (L)

REC OUT (L) 39

RV301

REC LEVEL (L)

(DECK B)

EQ IN (L)

PB EQ AMP

(DECK A)

IC611

PB EQ AMP

(DECK B)

IC601

REC/PB SWITCHING

IC602

R-CH

RV311

PB LEVEL (L)

(DECK A)

RV301

PB LEVEL (L)

(DECK B)

AIN (L)

BIN (L)

BIAS (N)

BIAS (C)

BIAS (M)

S1004

(DECK A 120/70)

S1008

(DECK B 120/70)

BIAS

CONTROL

CIRCUIT

B NORM/CROM

ALC ON/OFF

A 120/70

1516182022 23242517

REC

EQ AMP

PB OUT (L)

EQ OUT

(L)

PB-L

REC-L

(Page 27)

(Page 28)

• SIGNAL PATH : PLAYBACK (DECK A)

: PLAYBACK (DECK B) : RECORD

RV441

REC BIAS (R)

(DECK B)

HRPE101 (2/2)

(ERASE)

R-CH

RV341

REC BIAS (L)

(DECK B)

BIAS OSC

T621

BIAS OSC

Q621, 622

REC BIAS

SWITCH

Q623

C331, L331

BIAS

TRAP

B+

(A+7V)

D+5V

100

TC-RELAY

8584838281 807978

ALC-ON/OFF

A-PLAY-SW

S1001

(DECK A PLAY)

BIAS

PB-A/B

EQ-H/N

REC-MUTE

B-PLAY-SW

S1002

(DECK B PLAY)

TC-MUTE

R/P-PASS

NR-ON/OFF

(DECK A HALF)

S1003

AMS-IN

A-HALF

ROTATION

DETECT SENSOR

(DECK A)

IC1001

A-SHUT

S1006

(DECK B HALF)

S1005

(DECK A REC)

S1009

(DECK B REC)

ROTATION

DETECT SENSOR

(DECK B)

IC1002

B-SHUT

SYSTEM CONTROLLER

B-HALF

IC501 (2/4)

TRIGGER PLUNGER

DECK A

TRIGGER

PLUNGER DRIVE

(DECK A)

Q333, 334

A-TRG

TRIGGER PLUNGER

DECK B

TRIGGER

PLUNGER DRIVE

(DECK B)

Q331, 332

B-TRG

Q335

CAP-M-H/L

RV1001

TAPE SPEED

(HIGH)

CAPM-CNT1 CAPM-CNT2

CAPSTAN MOTOR

CONTROL SWITCH

Q1001

75 74

RV1002

TAPE SPEED

(NORMAL)

CAPSTAN

MOTOR DRIVE

Q336 – 343

(CAPSTAN)

– 25 –

– 26 –

7-4. BLOCK DIAGRAM – MAIN Section –

DIGITAL ECHO

IC711

RV711

ECHO

LEVEL

HCD-VX5A/VX5AJ/VX7A

REC-L

(Page 26)

J711

MIC 2

J712 MIC 1

(Page 24)

(Page 26)

VIDEO

(AUDIO) IN

75Ω

MD IN

MIC AMP

IC712 (1/2)

RV712

MIC LEVEL

INPUT SELECT SWITCH,

CD-L

PB-L

J101 (1/2)

ANTENNA

R-CH

FM/AM TUNER UNIT

FM ANT

GRAPHIC EQUALIZER CONTROL,

ELECTRICAL VOLUME

IC101

IN E2

IN D2

66 68 69 67

IN B2 IN A2 IN C2

ST-L ST-R

INPUT

SELECT

SWITCH

R-CH

MIC AMP

IC712 (2/2)

SOUND

CONTROL

CIRCUIT

KEY IN2

KEY IN1

60 5

R-CH

VC L+R/L–R

L-IN

R-CH

L+R/L–R

493-LATCH

BASS FREQ.

2 58 57

493-DATA

493-CLK

DBFB-H/L

MIC IN

KEY OUT 1 KEY OUT 2

L+R/L–R MATRIX CIRCUIT

47 48 38

L+R

23 24

REC A2

GRAPHIC EQUALIZER

R-CH

ADM L.P.F.

OSC

LC-INELC-INB

OSC

CONTROL CIRCUIT

L/R+DELAY

S-RAM

D607 D644

CIRCUIT

REC B2

F OUT2

42 41

EFFECT/ BYPASS

SURROUND

PROCESSOR

IC1201

VOL IN2

COMMAND

L-OUT

VOLUME

CONTROL

R-CH

CPU

INTERFACE

DATA

CLOCK

LATCH

BASS BOOST

CONTROL

CIRCUIT

BB B2,

BB A2

38, 39

DBFB CONTROL

SWITCH

Q111

CONTROL SWITCH

SUPER

WOOFER

BUF IN2

373233

BASS FREQUENCY

Q201

R-CH

BUF

OUT2

FEED BACK

R-CH

SWITCH

Q112

R-CH

D141

R-CH

D191

PROTECT

SWITCH

R-CH

Q192

R-CH

MUTING

Q191

–1

–2

SPEANA

J101 (2/2)

SUPER WOOFER

FAN MOTOR

Q401, 402

SURROUND SPEAKER IMPEDANCE USE 16Ω

MD OUT

J191

DRIVE

TM402

+ –

TM401

SPEAKER

IMPEDANCE

USE 8 – 16Ω

+ –

(Page 29)

M501 (FAN)

• SIGNAL PATH : TUNER (FM/AM)

: CD PLAY : TAPE PLAY

: RECORD : MIC INPUT

(Page 29)

RESET

AM ANT

ST-MUTE

STEREO

TUNED ST-DIN

ST-DOUT

ST-CLK

ST-CE

ST-MUTE STEREO

TUNED

ST-DOUT

53 54

ST-DIN ST-CLK

ST-CE

SYSTEM CONTROLLER

IC501 (3/4)

AC-CUT

RESET

F-RELAY

RY-SW

MUTING CONTROL

RESET SWITCH

Q501

STK-MUTE

LINE-MUTE

XC-OUT

X601

32.768kHz

X613

16MHz

XC-IN

X-OUT

X-IN

PROTECTOR

SWITCH

Q508, 509

MUTING

Q113

R-CH

– 27 –

POWER AMP

STANDBY SWITCH

Q803, 804, 881

+5V

RESET SIGNAL

GENERATOR

IC502

IC801

R-CH

TH831

TEMPERATURE

DETECT SWITCH

Q831, 832

MUTING CONTROL

SWITCH

Q412

R-CH

OVER LOAD

DETECT

Q801

DC DETECT

SWITCH

Q433, 434

D803

PROTECT SWITCH

OVER LOAD

DETECT SWITCH

Q439

Q432

– 28 –

R-CH

OVER LOAD

DETECT SWITCH

Q437

PROTECT SWITCH

Q435, 436

MUTING

Q411, 471

RELAY DRIVE

Q431

J701

PHONES

RY401

HCD-VX5A/VX5AJ/VX7A

7-5. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –

(Page 27)(Page 28)

GRID DRIVE

Q607 – 612

FL601

FLUORESCENT INDICATOR TUBE

GRID DRIVE

Q613

S611 – 630, 632 – 635,

S638 – 651, 751 – 757

REMOTE CONTROL

RECEIVER

IC602

DATA, CLK

ROTARY

ENCODER

S601

ROTARY

ENCODER

S602

S601

(JOG DIAL)

S602

VOLUME

(Page 23)

FLUORESCENT INDICATOR TUBE DRIVER,

78 79

46 – 67

S1 – S22

32 – 27

G13 – G18

G2 – G12

44 – 42, 40 – 33

11 – 14

KEY0 – KEY3

SIRCS

JOG-A

JOG-B

VOL-A

VOL-B

I2C DATA I2C CLK

KEY CONTROL

IC601

S LOW FREQ (BPF0)

ALL BAND (L+R)

LED DATA

LED SCK LED LAT

WAKE UP

XOUT

XIN

72 70

X601

12.5MHz

BPF1 BPF2

BPF3 BPF4

RESET

L SEL

16 17 18 19 20

BAND-PASS FILTER

IC603

F01

F02

F04

DET

F05

F06

L+R

LED DRIVER

IC604

5 3 4

DATA

13 14

CLK

STB

SYSTEM CONTROLLER

WAKE UP

IIC-DATA

IIC-CLK

B.P.F.

DET

P1 – P9, P11, P12, P15, P16

17, 19 – 23, 1 – 3, 5, 7, 10, 11

IC501 (4/4)

CD-POWER

POWER

STBY LED

TIMER LED

LINE

REC IN

LED DRIVE

Q604, 605

LED DRIVE

B+ SWITCH

Q601, 602

D611 – 624, D627 – 631,

D751 – 753

Q606

SPEANA

RESET

+5V (LED)

Q603

A+5V (SW)

D/A CONVERTER (IC509),

VIDEO AMP CIRCUIT B+

D+5V (SW)

M62493FP (IC101),

CD SENSOR CIRCUIT B+

D754

I/u

D632

TIMER SELECT

B+ SWITCH

Q907, 908

B+ SWITCH

Q904, 905

+5V

SYSTEM CONTROLLER

(IC501) B+

+5V

CD MECHANISM

CONTROLLER (IC502) B+

+5V (STBY)

(PANEL SECTION B+)

D+5V (UNSW)

(TAPE DECK SECTION B+)

+5V (LED)

(PANEL SECTION B+)

D925

D923

D501, 502

D507

D509

D922

D924

D+5V (SW)

CD SERVO/VIDEO CD

SECTION B+

+3.3V

MPEG VIDEO/AUDIO

DECODER (IC505) B+

REGULATOR

CONTROL SWITCH

Q903, 923

+3.3V

REGULATOR

Q531

TC, PANEL,

AUDIO

CD M+7V

(CD MOTOR SECTION B+)

TC M+12V

(TC MOTOR SECTION B+)

ST +10V

(FM/AM TUNER UNIT B+)

TO FLUORESCENT

INDICATOR TUBE

(FL601)

POWER AMP (IC801), PROTECTOR CIRCUIT

–26V

(FL DRIVER (IC601) B–)

REGULATOR

B+ SWITCH

Q911, 912

A+7V

A–7V

REGULATOR

FAN MOTOR B–

+10V

REGULATOR

Q909

+5V

IC902

+5V

IC904

REGULATOR

Q901, 902, 913

REGULATOR

Q914, 951, 952

VF1 VF2

+VL –VL

+VH –VH

–26V REGULATOR

Q971

D918

+7V

–7V

D405 – 407

+7V

REGULATOR

IC901

+12V

REGULATOR

IC903

RECT D832

RECT D831

RECT D971

RECT

D901 – 904

RECT

D907 – 910

POWER TRANSFORMER

T951

(Thai)

VOLTAGE

SELECTOR

S951

(EXCEPT Thai)

AC IN

– 29 –

– 30 –

7-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

• Circuit Boards Location

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• p : parts mounted on the conductor side.

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution: Pattern face side: Parts on the pattern face side seen from (Side B) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Side A) the parts face are indicated.

• Indication of transistor.

C Q

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

Note: The components identified by mark ! or dotted line

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

• Abbreviation

: internal component.

with mark ! are critical for safety. Replace only with part number specified.

Voltage variations may be noted due to normal production tolerances.

F : TUNER (FM/AM) E : PLAYBACK (DECK A) d : PLAYBACK (DECK B) G : RECORD L : CD PLAY (VIDEO) J : CD PLAY (AUDIO) c : DIGITAL OUT N : MIC INPUT

EA : Saudi Arabia model HK : Hong Kong model IA : Indonesian model JE : Tourist model MY : Malaysia model SP : Singapore model TH : Thai model TW : Taiwan model

W or less unless otherwise

CD SW board

PANEL board

TRANS board

VIDEO board

TUNER PACK (Tourist) TUNER (FM/AM) (Thai) TUNER (FM/MW/SW) (EXCEPT Thai, Tourist)

SURROUND board

MAIN board

MOTOR (TURN) board

SENSOR board

BD board

CONNECTOR board

AUDIO board

MOTOR (SLIDE) board

LEAF SW board

– 31 – – 32 –

HCD-VX5A/VX5AJ/VX7A

7-7. PRINTED WIRING BOARD – BD Board – • See page 32 for Circuit Boards Location.

• Semiconductor Location (Side A)

Ref. No. Location

IC104 F-3 Q101 F-6

(Page 42)

• Semiconductor Location (Side B)

Ref. No. Location

IC101 E-4 IC102 C-5 IC103 E-6

– 33 – – 34 –

+ 60 hidden pages