Sony HCDXGR-8 Service manual

MICROFILM

HCD-GRX8/R800/

RX88/RX99

SERVICE MANUAL

HCD-GRX8/R800/RX88/RX99 is the
tuner, deck, CD and amplifier section in
MHC-GRX8/R800/RX88/RX99.

Photo: HCD-GRX8

CD

SECTION

T APE

DECK

SECTION

Model Name Using Similar Mechanism HCD-H991AV
CD Mechanism Type CDM38L-5BD29AL/

Base Unit Type BU-5BD29AL
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism NEW
T ape T r ansport Mechanism T ype TCM-230AWR1/230PWR1

AEP Model

UK Model

HCD-RX88/RX99

E Model

HCD-GRX8/R800

Australian Model

HCD-GRX8

CDM38LH-5BD29AL

SPECIFICATIONS

— Continued on next page —

COMPACT DISC DECK RECEIVER

– 1 –

CAUTION

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

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 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.

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

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

This caution
label is located
inside the unit.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

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
repain 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 pick­up block. Therefore, when checking the laser diode emission, ob­serve from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK

Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output three times.

MODEL IDENTIFICATION
— BACK PANEL —

Parts No.

• Abbreviation
G : German model
EE : East European model
MX : Mexican model
HK : Hong Kong model
SP : Singapore model
MY : Malaysia model
TW : Taiwan model
AUS : Australian model
AR : Argentine model
TH : Thailand model
EA3 : Saudi arabia model
EA4 : Israel model
E2 : Without SW tuner E model.
E3 : With SW tuner E model.

PARTS No. MODEL

4-996-817-0
4-996-817-1
4-996-817-2
4-996-817-3
4-996-817-4
4-996-817-5
4-996-817-6
4-996-818-0
4-996-818-1
4-996-818-2
4-996-818-3
4-996-818-4
4-996-818-5
4-997-818-8
4-997-818-9
4-997-720-0
4-997-720-1
4-997-720-2
4-997-720-3
4-997-720-4
4-997-720-5
4-997-720-6
4-997-720-8
4-997-720-9

RX99: AEP, UK, G
RX99: EE, CIS
RX99: AEP, UK, G
RX99: EE, CIS
RX88
RX88
GRX8: TH, EA4
GRX8: E2, E3
GRX8: SP, MY
GRX8: TW
GRX8: HK
GRX8: AUS
GRX8: MX
R800: MX
R800: AR
GRX8: E2, E3
GRX8: SP, MY
GRX8: TW
GRX8: HK
GRX8: AUS
GRX8: MX
GRX8: EA3
R800: MX
R800: AR

PRODUCT
COUNTRY

MALAYSIA
MALAYSIA
INDONESIA
INDONESIA
MALAYSIA
INDONESIA
THAILAND
INDONESIA
INDONESIA
INDONESIA
INDONESIA
INDONESIA
INDONESIA
INDONESIA
INDONESIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA

– 3 –

TABLE OF CONTENTS

1. SERVICING NOTE .......................................................... 5

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

3. DISASSEMBLY

3-1. Loading Panel ....................................................................... 8

3-2. Front Panel ........................................................................... 8

3-3. Cassette Mechanism Deck ....................................................9

3-4. Panel Board and Cont Com Board ........................................9

3-5. Disc Tray ........................................................................... 10

4. SERVICE MODE ............................................................11

5. MECHANICAL ADJUSTMENTS ..........................14

6. ELECTRICAL ADJUSTMENTS ............................... 14

7. DIAGRAMS

7-1. Circuit Boards Location ...................................................... 20

7-2. Brock Diagrams

• Tuner Section (AEP, UK, German model)....................... 21

• Tuner Section (East European, CIS model)..................... 23

• CD Section ....................................................................... 25

• Deck Section .................................................................... 27

• Main Section .................................................................... 29

• Power Section ..................................................................31

• Display Section ................................................................ 33

7-3. Printed Wiring Board — CD Section —............................. 37

7-4. Schematic Diagram — CD Section — ............................... 39

7-5. Schematic Diagram

—Tuner (AEP, UK, German model) Section —................. 41

7-6. Printed Wiring Board

—Tuner (AEP, UK, German model) Section —................. 43

7-7. Printed Wiring Board

—Tuner (East European, CIS model) Section — ............... 44

7-8. Schematic Diagram

—Tuner (East European, CIS model) Section — ............... 45

7-9. Schematic Diagram — Deck Section —............................. 47

7-10. Printed Wiring Board — Deck Section — ....................... 49

7-11. Printed Wiring Board — Main Section — ....................... 51

7-12. Schematic Diagram — Main (1/4) Section — ................. 53

7-13. Schematic Diagram — Main (2/4) Section — ................. 55

7-14. Schematic Diagram — Main (3/4) Section — ................. 57

7-15. Schematic Diagram — Main (4/4) Section — ................. 59

7-16. Printed Wiring Board — Mic/HP Section —...................61

7-17. Schematic Diagram — Mic/HP Section — ...................... 62

7-18. Printed Wiring Board — Power Section — ..................... 63

7-19. Schematic Diagram — Power Section — ........................65

7-20. Schematic Diagram — Transformer Section —............... 67

7-21. Printed Wiring Board — Transformer Section — ............ 69

7-22. Printed Wiring Board — Leaf SW Section — ................. 70

7-23. Schematic Diagram — Leaf SW Section — ....................70

7-24. Printed Wiring Board — Display Section — ................... 71

7-25. Schematic Diagram — Display Section — ...................... 73

7-26. Schematic Diagram — Panel Section — ......................... 75

7-27. Printed Wiring Board — Panel Section —....................... 77

7-28. Schematic Diagram — CD Motor Section — .................. 79

7-29. Printed Wiring Board — CD Motor Section —............... 81

7-30. IC Block Diagrams ........................................................... 83

7-31. IC Pin Functions ............................................................... 88

8. EXPLODED VIEWS

8-1. Case Section........................................................................ 98

8-2. Chassis Section ................................................................. 100

8-3. Front Panel Section ........................................................... 101

8-4. CD Mechanism Deck Section-1 (CDM38L-5BD29AL) .. 102
8-5. CD Mechanism Deck Section-2 (CDM38L-5BD29AL) .. 103

8-6. Base Unit Section (BU-5BD29AL) .................................. 104

8-7. TC Mechanism Section 1 (TCM230AWR1) ....................105

8-8. TC Mechanism Section 2 (TCM230AWR2) ....................106

9. ELECTRICAL PARTS LIST ...................................... 107

– 4 –

SECTION 1

SERVICING NOTE

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
TURNS OFF

1

Remove the Case.

3

pull-out the disc tray.

2

Turn the cam to the

direction of arrow.

Note for Installation (ROTARY ENCODER)

BU cam

Groove

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

Section A

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

– 5 –

Front Panel

SECTION 2

GENERAL

55
54

53
52
51

50
49

48
47

46
45

44
43

42

1

234 56

7
8

9
10
11

12
13

14

15

16
17

18
19

20
21

22
23

24
25

26

41

40

27

3536373839

3031323334

29

28

– 6 –

LOCATION OF PARTS AND CONTROLS

1 1/u button
2 DISC 1 button
3 DISC 2 button
4 DISC 3 button
5 DISC SKIP/EX-CHANGE button
6 § button
7 FUNCTION button
8 Deck A ª button
9 Deck A · button
10 Deck B ª button
11 Deck B · button
12 CD ·∏ button
13 PLAY MODE/DOLBY NR/TUNER MEMORY button
14 EDIT/DIRECTION button
15 REPEAT/STEREO/MONO button
16 TUNER/BAND button
17 p button
18 MUTING button (RX88)

SONIC FORMATION button (GRX8/RX99/R800)

19 SURROUND button
20 KARAOKE PON/MPX button
21 PTY button (AEP, UK model)
22 r REC button
23 P PAUSE button
24 HI-PUB button
25 CD SYNC button
26 VOLUME knob
27 PHONES jack
28 GROOVE button
29 DBFB button
30 )/+ button
31 ENTER/NEXT button
32 JOG button
33 AUTO BPM
34 0/– button
35 BEAT LEVEL button
36 JAM button
37 SPEED button
38 SELECT button
39 ON/OFF button
40 ECHO LEVEL knob (Saudi Arabia model)
41 MIX MIC jack
42 MIC LEVEL knob
43 PAD A button
44 PAD B button
45 NON STOP button
46 FLASH button
47 LOOP button
48 FILE SELECT button
49 EFFECT button
50 GEQ CONTROL button
51 P FILE MEMORY button
52 DISPLAY button
53 DEMO button
54 CLOCK/TIMER SET button
55 TIMER/SELECT button

– 7 –

SECTION 3

DISASSEMBLY

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

3-1. LOADING PANEL

3

Loading panel

Claws

2

Pull-out the disc tray.

1

Turn the cam to the direction

of arrow.

3-2. FRONT PANEL

3

Screw

(BVTP3x8)

7

(CN106)

8

Flat type wire

(CN101)

4

Connector

(CN203)

Flat type wire

6

Flat type wire

(CN107)

2

Screw

(BVTP3x8)

9

Front panel assembly

1

Three screws

(BVTP3x8)

– 8 –

5

Connector

(CN752)

3-3. CASSETTE MECHANISM DECK

1

Two screws

(BVTT 2x5)

2

Two screws

(BVTT 2x5)

9

Three screws

(BVTP 2.6x8)

!º

Two screws

(BVTP 2.6x8)

!£

Three screws

(BVTP 2.6x8)

!¡

Screw

(BVTP 2.6x8)

!™

Screw

(BVTP 2.6x8)

!¢

Bracket

!∞

Mechanism deck

3

Small damper

4

Small damper

5

Push the cassette lids.

6

Remove the cassette lids.

7

Spring

8

Spring

3-4. PANEL BOARD AND CONT COM BOARD

7

6

Konb(Jog)

Nut

8

Konb(Volume)

9

Nut

4

!™ CONT COM

Shield

board

1

Ten screws

(BVTP 2.6x8)

5

Flat type wire

(CN602)

2

Three screws

(BVTP 2.6x8)

3

Panel board

– 9 –

!º

Four screws

(BVTP 2.6x8)

!¡

Six screws

(BVTP 2.6x8)

3-5. DISC TRAY

(Perfom after removing the front panel.)

3

Flat type wire (8 core)

4

Two claws

2

Pull-out the disc tray.

5

Remove the disc tray.

Turn the cam the

1

direction of arrow.

Note: When installing the Disc tray, pull around the flat type wire to

pass through the clawA and clawB, as shown in the figure.

Claw

A

Claw

B

– 10 –

SECTION 4

SERVICE 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. Press three buttons p , ENTER/NEXT , and 1/u simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

CD Delivery Mode

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

Procedure:

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

2. Press LOOP button and 1/u button simultaneously.

3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.

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 po wer cord is plugged
in and out.

Procedure:

1. Press three buttons p , ENTER/NEXT , and DISC 1 simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

Sled Servo Mode

• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.

Procedure:

1. Select the function “CD”.

2. Press three buttons p , ENTER/NEXT , and § simultaneously.

3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.

4. With the CD in stop status, press ) + utton move the pick-up to outside track, or – 0 button to inside track.

5. To exit from this mode, perform as follows:

1) Move the pick-up to the most inside track.

2) Press three buttons in the same manner as step 2.

Note:

• Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be chipped.

Change-over of AM Tuner Step between 9kHz and 10kHz

• A step of AM channels can be changed over between 9kHz and 10kHz.

Procedure:

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

2. Select the function “TUNER”, and press TUNER/BAND button to select the BAND “AM”.

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

4. Press ENTER/NEXT and 1/u buttons simultaneously , and the display of fluorescent indicator tube changes to “AM 9k STEP” or “AM

10k STEP”, and thus the channel step is changed over.

LED and Fluorescent Indicator Tube All Lit, Key Check Mode

Procedure:

1. Press three buttons p , ENTER/NEXT , and DISC 2 simultaneously.

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

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

3. In the key check mode, the fluorescent indicator tube displays “K 1 V0 J0”. Each time a button is pressed, “K”v alue increases. Howe ver ,

once a button is pressed, it is no longer taken into account.
“J” Value increases like 1, 2, 3 ... if rotating JOG knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.

4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

– 11 –

Aging Mode

This mode can be used for checking the operations of the CD player and tape deck.

• When problems occur;
Aging stops, and the stopped state is displayed on the fluorescent display tube.

• When no problems;
Aging continues.

Preparations:

• Set the CD on the DISC1 tray.

• Insert a commercially available tape for recording (tapes which contents can be erased, etc.) in decks A and B.

Setting the aging mode:

Press the p button, ENTER/NEXT button, and DISC SKIP/EX-CHANGE button together.
When the aging mode is set, the CD roulette mark blinks. To exit the mode, press the 1/u button and turn OFF the power.

Sequence:

The aging mode is executed in the following sequence.
If the function is set to “CD” when the aging mode is set, aging is performed starting from the CD player. When set to “T APE A” or “TAPE
B”, aging is started from deck A.
If the function is set to others, aging will not be started until the function is switched to CD or TAPE.

Aging of CD player (12 minutes)
Aging of deck A
Aging of deck B

Maximum about 12 minutes

Display of status:

• The aging status is displayed on the fluorescent display tube.

• Normally, the CD player displays the remaining aging time. But if operations ended abnormally, it displays the cause.

• During the aging of the tape deck, the operations performed will be displayed. If operations ended abnormally , this will be displayed at the
fluorescent display tube.

CD Player

• During normal operations:
Display of fluorescent display tube

**1-@@

**: Displays “CD” and the remaining aging time (minutes) alternately. The remaining aging time is counted down from 12.

@@: Track number being accessed.

• When operations end abnormally:

Display of fluorescent display tube

Display

NO DISC ERR
FOCUS1 ERR
FOCUS2 ERR
GFS ERR
FBIAS ERR
SENSOR ERR
TABLE ERR
TRAY ERR

DISC 1 is NO DISC from the beginning
Focus is not imposed properly
The focus deviated sever al times after the disc rotated normally
GFS ERROR
Error during focus bias adjustment
DISC 1 was found to be NO DISC by the disc sensor
The table did not rotate normally
The tray containing the BD did not operate normally

Main Cause

– 12 –

Tape Deck

Display of Operations

TAPE A AG-1
TAPE A AG-2
TAPE A AG-3
TAPE A AG-4
TAPE A AG-5
TAPE B AG-1
TAPE B AG-2
TAPE B AG-3
TAPE B AG-4
TAPE B AG-5

Operations during aging

• Operations are performed in the following sequence during aging

<CD player>

1. The CD tray rotates and disc 1 is selected.

2. Chucking is performed.

3. TOC is read.

4. Track 1 played back for 2 seconds.

5. The last track is played back for 2 seconds.

6. 1 to 5 is repeated.

7. After 12 minutes of aging, aging is switched to the tape deck.

Operation

TAPE A REW
TAPE A FWD
TAPE A FF
TAPE A REV
TAPE A REW
TAPE B REW
TAPE B FWD
TAPE B FF
TAPE B REV
TAPE B REW

Timing of Ending

Shutoff
2 minute playback
20 seconds or shutoff
2 minutes playback
Shutoff
Shutoff
2 minute playback
20 seconds or shutoff
2 minute playback
Shutoff

<Tape Deck>

1. The tape in deck A is rewound to the head.

2. The FWD side is played back for 2 minutes.

3. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed w hen the tape end is reached before the 20 seconds.

4. The REV side is played back for 2 minutes.

5. The tape is rewound to the head (REW).

6. The tape in deck B is rewound to the head.

7. The FWD side is played back for 2 minutes.

8. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed w hen the tape end is reached before the 20 seconds.

9. The REV side is played back for 2 minutes.

10. The tape is rewound to the head (REW).

11. Aging is switched to the CD player.

– 13 –

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 demagne-

tizer.

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 sup-

ply 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-102C

CQ-102RC

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

(0.02 – 0.08 oz • inch)

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

71 to 143 g • cm

(0.98 – 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=0.775V

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

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

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

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 R-CH.

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

Signal Used forTape

P-4-A100

WS-48B

P-4-L300

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)

Note: Perform this adjustments for both decks.

Procedure:

1. Mode : Playback

test tape
P-4-A100
(10kHz, –10dB)

main board
CN301
Pin

1

Pin

3

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

(L-CH)
(R-CH)

level meter

set

main board
CN301
Pin

2

(GND

+
–

2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw

so

that outputs match within 1 dB of peak.

L-CH
peak

screw
position

R-CH
peak

output
level

within
1 dB

L-CH
peak

R-CH
peak

within 1dB

screw
position

– 14 –

3. Mode: Playback Tape Speed Adjustment (Deck A)

)

test tape
P-4-A100
(10kHz, –10dB)

set

main board
CN301
Pin

1

(L-CH)

Pin

L

R

2

(GND)

oscilloscope

Note: Set the test mode using the following method and begin tape

speed adjustment.
In the test mode, the speed will switch to double speed or
normal speed each time the HI-DUB button is pressed.

Procedure:

With the power turned ON, press the p button, ENTER/NEXT
button, and DISC 3 button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while

Pin

3

(R-CH)

in the test mode.)
To exit the test mode, press the 1/u button.

Waveform of oscilloscope

in phase 45

good

°

135

90

°

°

wrong

180

°

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

Adjustment Location: Playback Head (Deck A)

Record/Playback/Erase Head (Deck B)

1

Remove the four claws

2

Window

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

2. Press the · button of deck B.

3. Press the HI-DUB button and play the tape at double speed.

4. Adjust RV1001 of the LEAF SW board so that the reading of
the frequency counter becomes 6000 ± 180 Hz.

5. Press the HI-DUB button and play the tape at normal speed.

6. Adjust RV1002 of the LEAF SW board so that the reading of
the frequency counter becomes 3000 ± 90 Hz.

Adjustment Location: LEAF SW board

Sample Value of Wow and flutter

W.RMS (JIS) less than 0.3%
(test tape: WS-48B)

Playback Level Adjustment (Deck A, Deck B)

Procedure:

Mode: Playback

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

set

main board
CN301
Pin

1

(L-CH)

Pin

3

(R-CH)

level meter

Reverse Foward

Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301
(L-CH) and RV401 (R-CH)
so that adjustment within the following adjustment level.

Adjustment level:

CN301 playback level: 301.5 to 338.3 mV (–8.2 to –7.2 dB)
level difference between the channels: within ± 0.5 dB
Adjustment Location: A UDIO board

Adjustment Location
[LEAF SW BOARD]

RV1001(High Speed)
RV1002(Normal Speed

RV1002

RV1001

– 15 –

Record Bias Adjustment (Deck B)

)

Record Level Adjustment (Deck B)

Procedure:

INTRODUCTION

When set to the test mode performed in Tape Speed Adjust­ment, when the tape is re wound after recording, the “REC memory

mode” which rewinds only the recorded portion and playback is
set.
This “REC memory mode” is convenient for performing this ad­justment. During recording, the input signal FUNCTION will auto­matically switch to VIDEO.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)

1. Press FUNCTION button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)

2. Insert a tape into deck B, press the r REC button, and then
press the ( button to start recording.

3. Mode: Record

VIDEO (AUDIO) IN

1) 315 Hz

2) 10 kHz

AF OSC

attenuator

600

Ω

} 50 mV (–23.8 dB)

blank tape
CS-123

set

Procedure:

INTRODUCTION

When set to the test mode performed in Tape Speed Adjust­ment, when the tape is rewound after recording, the “REC memory

mode” which rewinds only the recorded portion and playback is
set.
This “REC memory mode” is convenient for performing this
adjustment. During recording, the input signal FUNCTION will au­tomatically switch to VIDEO.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)

1. Press FUNCTION button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)

2. Insert a tape into deck B, press the r REC button, and then
press the ( button to start recording.

3. Mode: Record

VIDEO (AUDIO) IN
315Hz 50 mV (–23.8 dB)

AF OSC

attenuator

600

Ω

set

blank tape
CS-123

4. Mode: Playback

recorded
position

set

main board
CN301
Pin

1

(L-CH)

Pin

3

(R-CH)

level meter

5. Confirm playback the signal recorded in step 2 become adjust­ment level as follows.
If these levels do not adjustment le vel, adjust the R V341 (L-CH)
and R V441 (R-CH) on the A UDIO board to repeat steps 3 and 4.

Adjustment level: The playback output of 10 kHz le vel difference

against 315 Hz reference should be ± 1.0 dB.

Adjustment Location: A UDIO board

Adjustment Location:

[AUDIO BOARD] (Conductor Side)

RV341(Lch),RV441(Rch)
Record Bias

RV301 RV401

RV441 RV341

RV311(Lch),RV411(Rch)
Playback Level (Deck A)

RV411

RV311

4. Mode: Playback

recorded
position

set

main board
CN301
Pin

1

(L-CH)

Pin

3

(R-CH)

level meter

5. Confirm playback the signal recorded in step 2 become adjust­ment level as follows.
If these levels do not adjustment level, adjust the R V301 (L-CH)
and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4.

Adjustment level:

CN403 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)

Adjustment Location: MAIN board

[MAIN BOARD] (Conductor Side)

RV301
Record Level (Lch

1 3

CN301

IC301

RV351
Record Level (Rch)

RV301(Lch),RV401(Rch)
Playback Level (Deck B)

– 16 –

TUNER SECTION 0dB=1µV

Note 1: As a front-end (FE1) is dif ficult to r epair if faulty , replace

it with new one.

Note 2: No adjustment is needed due to a tuner pack for except

AEP, UK, German, East European, CIS models.

AM Tuned Level Adjustment
(AEP, UK, German, East European, CIS model only)

Note: FM Tuned Level adjustment should be performed after this

AM Tuned Level Adjustment.

Setting:

Band: MW

loop antenna
(Supplied accessories)

µ

V/m) = SSG output level dB (µV/m) –26dB.

AM RF SSG

30% amplitude
modulation by
400Hz signal

loop antenna

60cm

Field strength dB (

set

AM antenna
terminal (TM1)

Modulation: 999 kHz (at 9 kHz step)

1,050 kHz (at 10 kHz step)

Procedure:

1. Set the output of SSG so that the input level of the set becomes
55 dB.

2. Tune the set to 999 kHz or 1,050 kHz.

3. Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.

Adjustment Location: TCB board

FM Tuned Level Adjustment
(AEP, UK, German, East European, CIS model only)

Note: This adjustment should be performed after the AM Tuned

Level Adjustment.

Setting:

Band: FM

FM RF SSG

75

Ω

coaxial

set

Carrier frequency: 98MHz
Modulation: AUDIO 1kHz, 75kHz

Output level: 25dB (at 75

deviation (100%)

Ω

FM ANTENNA terminal (TM1)

open)

Adjustment Location
[TCB BOARD] (Component Side)

TM1

RV41
AM Tuner Level

RV42

FM Tuned

Level

IC21

Procedure:

1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Adjust R V42 to the point (moment) when the TUNED indicator
will change from going off to going on.

Adjustment Location: TCB board

– 17 –

FM Polar Adjustment (East European, CIS model only)

Connection 1 :

FM RF SSG

Carrier frequency: 69 MHz
Output level: 1 mV (60 dB
Modulation: AUDIO 1 kHz, 10 kHz deviation

75

Ω

coaxial

FM antenna
terminal (75

set

Ω

)

µ

) (at 75 Ω open)

Connection 2 :

AF OSC

FM RF SSG

75

Ω

coaxial

set

Procedure :

1. Set the modulation of FM RF SSG to AUDIO 1 kHz, 10 kHz
deviation according to “Connection 1”.

2. Tune the set to 69 MHz.

3. Adjust the RV1702 so that the reading of frequency counter con­nected to TP1702 (VCO) becomes within 31.25 kHz ± 0.05 kHz.
(VCO adjustment)

4. Then record the reading of the le vel meter connected to TP1701.

5. Set the modula tion of FM RF SSG to AUDIO 31.25 kHz, 10
kHz deviation according to “Connection 2”.

6. Tune the set to 69 MHz.

7. Set the CT1701 to be mechanical center.

8. Adjust the L1701 so that the reading of the level meter con­nected to TP1701 (FILTER) becomes maximum.
Then adjust the CT1701 so that the reading of the level meter
connected to TP1701 (FIL TER) becomes maximum. (SUB CAR­RIER PEAK Adjustment)

9. Adjust the RV1701 so that the level at the moment becomes 14
dB higher value than the level recorded in step 4. (SUB CAR­RIER LEVEL Adjustment)

Audio 31.25 kHz

Carrier frequency: 69 MHz
Output level: 1 mV (60 dB
Modulation: AUDIO 31.25 kHz, 10 kHz deviation

external
modulation
terminal

µ

) (at 75 Ω open)

(EXTERNAL MODULATION)

Adjustment Location: TCB board

Adjustment Location:

[TCB BOARD] (Conductor Side)

frequency counter

TP1701
(FILTER)

level meter

TP1702
(VCO)

IC1701

FM antenna
terminal (75

Ω

)

[TCB BOARD] (Component Side)

L1701

CT1701

RV1701
Sub Carrier
Level

IC1701

RV1702
VCO

Sub Carrier Peak

– 18 –

CD SECTION

0V

C (DC
voltage)

Sled servo
OFF

Sled servo
ON

Note:

1. CD Block is basically constructed 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 10MΩ 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 (FEO)
TP (VC)

Procedure :

1. Connect oscilloscope to test point TP (FEO).

2. Connect between test point TP (FOK) and Ground by lead wire.

3. Turn Power switch on.

4. Put disc (YEDS-18) in and turned Power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)

5. Check the oscilloscope waveform (S-curve) is symmetrical be­tween A and B. And confirm peak to peak le vel within 3 ± 1Vp-p.

+
–

E-F Balance (Traverse) Check

oscilloscope

BD board

TP (TE)
TP (VC)

+
–

Procedure :

1. Connect oscilloscpe to test point TP (TEO) on BD board.

2. Turned Power switch on. Press FUNCTION button to select
CD.

3. Put disc (YEDS-18) in to play the number five track.

4. Press the p button, ENTER/NEXT button and ^ button
simultaneously several times until the ‘’SHUFFLE” on the
fluorescent display tube blinks.
(The sledding servo is turned OFF.)

5. Check the level B of the oscilliscope’ s w av eform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 7%

Traverse waveform

0V

Center of the waveform

B

A (DC voltage)

S-curve waveform

symmetry

A

Within 3

±

1 Vp-p

B

6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure than the ratio of

A : B or B : A is more than 10 : 7.

• Tak e 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 test point TP (RF) on BD board.

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

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

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

clearly distinguished at the center of the waveform.

RF signal waveform

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

level : 500 mV ± 100 mVp-p

6. Press the p button, ENTER/NEXT button and ^ button
simultaneously several times until the ‘’SHUFFLE” on the
fluorescent display tube goes off. (The tracking servo and
sledding servo are turned ON.) Confirm the C (DC voltage) is
almost equal to the A (DC voltage) is step 5.

Traverse waveform

Adjustment Location :

[ BD BOARD ] — SIDE A —

CN101

TP
(GND)

TP (RF)

IC101

TP
(TEO)

TP
(FEO)

IC103

TP
(VC)

TP
(FOK)

IC102

level : 1.3 ± 0.3 Vp-p

IC102

– 19 –

7-1. CIRCUIT BOARDS LOCATION

d

d

CD-SW board

MIC board

PANEL board

HP board

ENCAPSULATED
COMPONENT (GRX8/R800)
TCB board (RX88/RX99)

DECO board

LEAF SW board

AUDIO board

CONT COM board

SECTION 7

DIAGRAMS

TRANSFORMER board

MAIN boar

CONNECTOR board

POWER board

MOTOR (TURN) board

BD board

SENSOR board

MOTOR (SLIDE) boar

– 20 –

HCD-GRX8/R800/RX88/RX99

7-2. BLOCK DIAGRAMS

– TUNER SECTION – (AEP, UK, German model)

ST +10V

TM1

ANTENNA

FM 75Ω

COAXIAL

AM

Q5

ANT IN

VT

FE1

FM FRONT END

IF OUT

LW SW

Q13
MW
SW

6

5

3

2

26 25 24 23 22 21

Q14

CF1

10.7MHz

FE2

MW/LW FRONTEND

Q12
MW
SW

28

29

26

27

10.7MHz

REG

AM OSC

FM AFC

AM RF IN

FM SD

OSC.BUFF
30 14

CF3

ADJ

VCO STOP

AM/FM

15

13

AM MIX

MUTE

IF BUFF

1 FM IN

FM/AM MPX

IC41

2

AM

12

SD

ADJ

AM

10

SD

450kHz

D41

RV41

X42

AM IF

AM

TUNED

LEVEL

IFT41

X41

10.7MHz

4

9

FM DET OUT

AM IF

FM

DET

23 22

AM

24

DET
OUT

7

STEREO

6

TUNED

OUT L

MPX IN

OUT R

IC1751

57

4

ST L

RDS INT

RDS DATA
STEREO
TUNED

MUTE

21

LPF

RCH

20

RDS DECODER

IC1752

13 14

X1751

4.332MHz

A

MAIN

SECTION

AMP IN L

AMP
OUT

17

L

19

2

16

• R CH: Same as L ch

• SIGNAL PATH
: FM
: MW

CF2

IF AMP

Q1, 2

20

10.7MHz

12

13

14
15

16

17

LW SW

Q11
MW
SW

IF AMP

Q3, 4

Q9

RV42

FM

TUNED

LEVEL

(Page 29)

X21

2

AM OSC

7

FM

1214

FM/AM IF

VCO STOP

1710

9

FM

VT1

MW

09

PLL

IC21

11

MW

1 24

XIN

4.5MHz

XOUT

3 ST-CE

CE

4

DI

5

CL
DO

6

COM-DIN
COM-CLK

COM-DATA

– 21 – – 22 –

– TUNER SECTION – (East European, CIS model)

22

MPX IN

21

OUT L

LPF 19

AMP

IN
L

AMP
OUT

L

17

4
5

3

6

ST-CE
COM-DIN
COM-CLK
COM-DATA

A

MAIN

SECTION

CE
DI
CL

DO

• R CH: Same as L ch

• SIGNAL PATH
: FM
: MW

D42 D43

13

FM LOW

SUB CARRIER

PEAK

L1701CT1701

TP1701

2

3

20

RV1701

SUB CARRIER

LEVEL

7

6

910

POLAR

DECODER

IC1701

IN

POUT

L OUT

R OUT

SUB IN

MON

VCO

ST IND

VCO

STOP

18 17

R CH

13

12

POLAR/PILOT

SWITCH

IC1702

14

9 11

L IN

L OUT

CA

R OUT

4

R CH

SWITCH

Q1701

SWITCH

Q1702

SWITCH

Q1703

D1704

D1703

D1701
D1702

ST-L
STEREO
TUNED
MUTE

TP1702

RV1702

VCO

(Page 29)

TM1

AM

ANTENNA

FM 75Ω

COAXIAL

ANT IN

ST +10V

Q5

VT

FE1

FM FRONT END

IF OUT

CF1

10.7MHz

IF AMP

Q1-4

CF3

10.7MHz
1 FM IN

REG

FM/AM MPX

IC41

1710

09

PLL

IC21

11

FM

TUNED

LEVEL

15

13

30 14

RV42

2

1214

7

8

10

X42

450kHz

D41

AM/FM

VCO STOP

IF BUFF

MUTE

AM

SD

AM

TUNED

LEVEL

12

RV41

2

AM IF
IFT41

4

9

AM IF

FM
DET

STEREO

TUNED

7
6

X41

10.7MHz

1 24

X21

4.5MHz

AM MIX

AM
SD

6

28

5

2

15

17

16

14

12

13

29

26 25 24 23 22 21

20

9

LW SW

Q9

27

FE2

MW/LW FRONTEND

Q11
MW
SW

Q12
MW
SW

Q14

LW SW

Q13
MW
SW

AM OSC

AM RF IN

FM

VT1

MW

MW

AM OSC

FM

VCO STOP

FM/AM IF

IF REQ

XIN

XOUT

3

OUT R

RCH

20

ADJ

FM SD

ADJ

OSC.BUFF

FM AFC

26

23

FM DET OUT

24

AM
DET
OUT

POLA
L IN

HCD-GRX8/R800/RX88/RX99

– 23 – – 24 –

HCD-GRX8/R800/RX88/RX99

– CD SECTION –

OPTICAL PICK-UP BLOCK

B+

K

E

A

D

A

B

D

C

C

B

F

1
4
2
5

10

6

LASER
DIODE

DETECTOR

LD DRIVE

Q101

FOCUS/TRACKING SERVO.

RF AMP

IC101 (1/2)

38

PD1

RF O

SENS1

SENS2

XRST

23

LOCK

C.OUT

FE O

FE M

TA M

TA O

DATA

XLT
CLK

FOK

33

19
24
25

26

12
13

22
21
20

27

39

41
42

2

1

45

47

3637LD

PD2

F
E

FEI

FEO

TEO

TEI

PD

IC391

1

D.OUT

71

DOUT

RF

44

LOCK

29

14

CNIN

15

SEIN

DATAO

CLKO

XLTO

15 16 17

6

7

FOK

MDP

23

27

SPOD

21

CD DIGITAL

OUT

OPTICAL

DIGITAL SIGNAL PROCESSOR

S101

LIMIT

IC103

DATA

10 11 12 75

XLAT

CLOK

SQCK

SENS

SCOR

SQSO

8

79 100

XRST

89 • 90

XTAI

LOUT1

LOUT2

16.9344MHz

•
XTAO

X101

86

93

L-CH

R-CH

CD CLK

CD DATA

SENS2

SCOR
SQ DATA

SQ CLK

SENS

M102

SLED MOTOR

M101

SPINDLE

MOTOR

09

XRST

TRACKING

FOCUS

COIL

11

M

•

12

13

M

•

14

COIL

2-AXIS

DEVICE

SLED/SPINDLE
MOTOR DRIVE

IC102 (2/2)

SLED MOTOR

DRIVE

SPINDLE MOTOR

DRIVE

T+

–

T

–

F

F+

6

3

15

16

18
17

9

MUTE

TRACKING

COIL DRIVE

FOCUS/TRACKING

COIL DRIVE
IC102 (1/2)

FOCUS

COIL DRIVE

SLED

SERVO

IC101 (2/2)

SL P

SL O

S801

DET

TABLE

SENSOR

IC702

DISC

SENSOR

IC703

ROTARY

ENCODER

S811

Q701

27

26

TURN

MOTOR DRIVER

IC701

M701

1416

TURN

MOTOR

M801

SLIDE

MOTOR

M

M

7
2

4

7

OUT1
OUT2

MOTOR DRIVER

OUT2
OUT1

SLIDE

IC801

IN1
IN2

RIN

FIN

OPEN/CLOSE

3

6

2

10

XLAT

T. SENS

DISC SENS

ENC 1
ENC 2

ENC 3

OPEN

TBL.L

TBL.R

LOAD IN

LOAD OUT

C

MAIN

SECTION

(Page 29)

• R CH: Same as L ch

• SIGNAL PATH
: CD
: Digital out

– 25 –

– 26 –

– DECK SECTION –

HCD-GRX8/R800/RX88/RX99

HP101
PB HEAD
(DECK A)

REC/PB HEAD

(DECK B)

HRPE101

ERASE HEAD

PB A/B

MS OUT

PB L

LM ON/OFF

NORM/HIGH

NR ON/OFF

REC/PB/PASS

REC L

BIAS ON/OFF
RM ON/OFF

ALC ON/OFF

RELAY REC/PB

CAPM CNT1M

CAPM CNT2M

CAPM CNT1P

CAPM CNT2P
CAP M H / L

A SHUT

B

MAIN

SECTION

(Page 29)

17

2

DOLBY NR

RECOUT

C
32 33

S1008
B CrO

19

B 120/70

PAS

BIAS SW

M

2

DOL

DOLBY
TYPE B

M1

CAPSTAN

MOTOR

CN301

3

R CH

28

27

M

MS

26

PB OUT

LM ON/

OFF

NORM/

HIGH

NR ON/

OFF

PB

RIN

BIAS ON/OFF

RM ON/OFF

ALC ON/OFF

CAP MOTOR
CONTROL
Q336-343

CONTROL

RV1002

NORMAL

SPEED

SPEED

Q1001

40

25

18

23

24

44

20
22
15

RV1001

HIGH

SPEED

1

SWITCH

Q335

REEL

DETECT

IC1001

S1004
A CrO

RV311

4

PLAYBACK

LEVEL

DECK A

RV301

PLAYBACK

LEVEL

DECK B

RV341

REC

BIAS

REC BIAS

BIAS OSC

T621, Q621, 622

IC611

L

R

L

R

X

R CH

R CH

3

P

ERASE BIAS

IC601

1

IC602

R

REC/PB

16

PB-A/B

A IN

48

B IN

46

RV301

REC LEVEL

+7.5V

Q623

EQIN

38

EQOUT

36

A 120/70

70

120

DOLBY NR
IC301

39

REEL

DETECT

IC1002

S1001 (A PLAY)

• R CH : Same as L ch

• SIGNAL PATH

+5V

S1002 (B PLAY)

: PB (DECK A)
: PB (DECK B)
: REC (DECK B)

09

• PLUNGER SOLENOID is supplied
as the MECHANICAL BLOCK ASSY.

A DECK/
B DECK
PLUNGER

TRIGGER
MOTOR
CONTROL
Q331-334

S1003

(A HALF)

S1005

(REC A)

S1006

(B HALF)

S1009

(REC B)

+5V

+5V

B SHUT

A PLAY

B PLAY

B HALF

B TRIG

A TRIG

– 27 – – 28 –

HCD-GRX8/R800/RX88/RX99

– MAIN SECTION –

J751

MIX
MIC

(Page 34)

DISPLAY

SECTION

F

VIDEO/IN

(AUDIO)
L

MD IN L

MD/VIDEO

(AUDIO)
OUT L

DJ-SIG

DJ-MUTE

J101

PB L

REC L

IC750(1/2)

RV750

MIC

LEVEL

GRX8:EA3

ECHO PROCESSOR
IC751

29

LPF 1 IN LPF 2 OUT

ECHO
LEVEL

R-CH

IC750(2/2)

Q411

SELECT
SWITCH

MICON
INTERFACE

34

33 32

1 2 3

IC411(2/2)

7

60 2

R-CH

IC411(1/2)

36

MUTE

1

V

64

MD

69

TC

67

TU

66

CD

68

MIX AMP
IC401

6

7

EQ
IC111(1/2)

EQ

42

AMP

58

57

VOLUME
IC111(2/2)

41 36

38 39

DBFB
SWITCH
Q111,112

SPE SIG

E

IIC DATA

IIC CLK

RESET

MUTE

Q113

J191

MUTE

40

6

SUPER WOOFER
AMP
IC191

1

Q191

DBFB
SWITCH
Q141,143

SUPER
WOOFER

FRONT

DBFB

DISPLAY
SECTION

(Page 33)

B

DECK

SECTION

(Page 28)

A

TUNER

SECTION

(Page 22, 24)

C

CD

SECTION

(Page 26)

09

RELAY REC/PB

A SHUT
B SHUT

B HALF
A HALF
A PLAY
B PLAY

PB A / B

NORM/HIGH

BIAS ON/OFF

RM ON/OFF
NR ON/OFF

REC/PB PASS

CAPM CNT1M
CAPM CNT2M
CAPM CNT1P
CAPM CNT2P
ALC ON/OFF

LM ON/OFF

CAP M H/L

A TRG
B TRG

MS OUT

ST L

RDS DATA

RDS INT

COM DIN

COM DATA

STEREO

TUNED

ST CE
MUTE

COM CLK

L CH

TBL. L
TBL. R

SCOR

T. SENS

SENS 2

SENS

X RST

CD CLK

CD DATA

DISC SENS

SQ CLK

SQ DATA

X LAT

OPEN

ENC-1

ENC-2
ENC-3

LOAD IN

LOAD OUT

97

TC RELAY

26

A SHUT

27

B SHUT

28

B HALF

98

A HALF

95

A PLAY SW

96

B PLAY SW

87

PB A/B

93

EQ H//N
BIAS

92
90

REC MUTE

89

NR ON/OFF
R/P PASS

88

CAPM CNT1M

85

CAPM CNT2M

86
17

CAPM CNT1P
CAPM CNT2P

77
99

ALC ON/OFF
TC MUTE

87

82

CAP M H/L

83

A TRG

84

B TRG

31

AMS IN

1

3

M62442 LAT

2

52

M62442 DATA

3

51

M62442 CLK

66

ST DIN

70

STEREO
TUNED

69
68

ST CE

72

ST MUTE

67

ST DOUT

ST CLK

65

60

TBL L

61

TBL R

SCOR

18
76

T SENS

73

SENS 2

74

SENS

57

XRST

48

CD CLK

47

CD DATA

75

DISC SENS

36

SQ CLK

34

SQ DATA IN

58

XLT

OUT OPEN

81

ENC1

80

ENC2

79

ENC3

78

LOAD IN

64

LOAD OUT

63

22

RDS DATA
RDS INT

21

RX88/RX99:
AEP,UK,G

MASTER CONTROL

IC501

PL RELAY

POWER

CD POWER

STK MUTE

DBFB H/L
TA MUTE

F RELAY

R RELAY

IIC DATA

IIC CLK

RESET

AC CUT

XT1

XT2

2
1

6

7

8

55
56

F RELAY
R RELAY
PL RELAY

D

15

RESET

SWITCH

Q951

16

RESET

IC951

D951

X1

11

10

X2

14

13

46

100

+5V

X501

5MHz

X502

32.768KHz

5

MUTE

SWITCH

Q142

POWER ON/OFF

CD POWER

STK MUTE

POWER

SECTION

(Page 31)

• R CH: Same as L ch

• SIGNAL PATH
: FM
: CD
: PB
: REC
: VIDEO/MD

• Abbreviation
G : German model.

EA3 : Saudi Arabia model.

– 29 – – 30 –

– POWER SECTION –

HCD-GRX8/R800/RX88/RX99

PL RELAY

R RELAY

F RELAY

FRONT

FRONT

POWER AMP

IC201

3 12

8

THERMAL

DET

Q321,322

THP321

OVER LOAD

DET

Q201

GRX/R800/RX99

RY402

RY401

RELAY

DRIVE

Q401,402

RELAY

DRIVE

Q403,407

RX88

Rch

RELAY

DRIVE
Q408

FAN MOTOR

DRIVER

Q961, 962

RY404

FRONT

Rch

UNREG
–12V

TM402

SURROUND

SPEAKER

GRX8/R800/RX99

M901

M

FAN

MOTOR

TM401
FRONT

SPEAKER

J755

PHONES

D

MAIN

SECTION

(Page 30)

09

DBFB

STK MUTE

CD POWER

POWER ON/OFF

CD+5V

AU/D5V SW

Rch

D5V

SWITCHED

CD REG

Q931

+5V REG

Q933

Q937

– 31 –

Q932

Q934

MUTE

SWITCH

Q304,305

A+7V

A–7V

+5.6V

D932

M+7V

SWITCH

Q901

Q905

Rch

+10V

ST+10V

Rch

+5.6V REG

IC931

3 1

+7V REG

IC941

3 1

+7V REG

IC901

3

–7V REG

IC902

3

+10V REG

IC911

3 1

3 1

+10V REG

IC921

PROTECT
CONTROL

Q306,307

T501

POWER

TRANSFORMER

VF

RECT

D111,112

VF

GRX8:E2,E3,SP,MY,HK,TW,EA3
/R800:AR

VOLTAGE

SELECTOR

S501

• R CH : Same as L ch

• SIGNAL PATH
: FM

• Abbreviation
: Without SW tuner E model.

E2

: Without SW tuner E model.

E3

: Saudi Arabia model.

EA3

: Singapore model.

SP

AC
IN

: Malaysia model.

MY

: Hong Kong model.

HK

: Taiwan model.

TW

:Argentine model.

AR

1

2

UNREG

–12V

POWER B+
POWER B–

+12V REG

Q911-913

+7V

RECT
D102

RECT
D101

DRIVER

RX88/RX99

RELAY

Q101

VFDP

RECT
D103,
D104

VF REG

Q111

GRX8/R800

RY101

– 32 –

HCD-GRX8/R800/RX88/RX99

– DISPLAY SECTION –

IIC DATA

IIC CLK

RESET

X601

8MHz

E

MAIN

SECTION

(Page 30)

SPE SIG

SDA

24

SCL

23

10

RESET

XOUT

8

XIN

9

SEG1-SEG20

FL601,Q70,702

FLUORESCENT INDICATOR TUBE

SPEANA BPF FILTER

IC603

4

LINE IN

DISPLAY CONTROL

IC601

GR1-GR13

41 - 5354 - 57

F01
F02
F03
F04

L+R

79

LED1

•

80

•

1

LED

SWITCH

6

•

11

•

12

•

14
18

LED15

L SEL

SIRCS

L+R
JOG A
JOG B

KEY 0

KEY 3

VOL A
VOL B

25

33
34
35
36
37
32
21
22

26

29

S602

VOLUME

19
20

ROTARY

ENCODER

SPEANA 1
SPEANA 2
SPEANA 3
SPEANA 4

VF

SP1

17

SP2

16

SP3

15

SP4

14

L+R

13

PANEL LED

LED

CONTROL

Q603

REMOTE
CONTROL
RECEIVER

IC602

S601

(JOG)

ROTARY

ENCODER

KEY

MATRIX

Q601,602

D+5V

X501

8MHz

SP1
SP4
L+R

19

I2C DATA
I2C CLK

18

RESET

4

29

SIRCS

27

JOG A

28

JOG B

2

XOUT

XIN

3

33

BPF LOW

36

BPF HIGHT

37

L+R

PANEL CONTROL

IC801

KEY O
KEY 1

BPM LED B
BPM LED A

BOMBER LED
ON/OFF LED

MUTE

DATA
CLK
LAT
CH

RST
BSY

D805

S801-808

KEY

MATRIX

LED
SWITCH
Q854,855

SPEANA

CONTROL

Q958-960

SOUND MIX

SD

15

SI

14

ST

8

CH

16

RST

17

BUSY

20

XT XT

23

4.09MHz

D806

IC851

X851

OUT

D801-803

PANEL LED

MUTE
SWITCH
Q851

23

DJ MUTE

DJ SIG

F

MAIN

SECTION

(Page 29)

38
39

61
62

63
64

5

14
15
16
13
12
20

09

– 33 – – 34 –

THIS NOTE IS COMMON FOR PRINTED WIRING

50mV/DIV, 1msec/DIV

0.2Vp-p

135µsec

5Vp-p

135µsec

5Vp-p

BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)

For schematic diagrams.

Note:

• 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.

¢

•

: internal component.

4

W or less unless otherwise

• C : panel designation.

Note: The components identified by mark ! or dotted line

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

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.

• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal pro­duction tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : FM
f : AM
g : VIDEO/MD
E : PB (DECK A)
d : PB (DECK B)
G : REC (DECK B)
J : CD
c : digital out

• Abbreviation
G : German model.
E2 : Without SW tuner E model.
E3 : With SW tuner E model.
EA3 : Saudi Arabia model.
EA4 : Israeli model.
EE : East European model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
HK : Hong Kong model.
TW : Taiwan model.
AR : Argentine model.
IA : Indonesian model.
TH : Thai model.
MX : Mexican model.
SAF : South African model.

For printed wiring boards.

Note:

• 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.)

: Through hole.

WAVEFORMS
– CD SECTION –

1

500mV/DIV, 500nsec/DIV

IC101 #£ RFO

2

200mV/DIV, 1µsec/DIV

IC101 2 FEI

3

IC101 $¶ TEI

4

7.8µsec

IC103 @¶ MDP

5

230µsec

IC103 ^º XPCK

6

IC103 ^™ RFCK

7

IC103 &¢ WFCK

8

16.9344MHz

IC103 *ª XTAI

1.3Vp-p

0.5Vp-p

2.5Vp-p

5Vp-p

2.6Vp-p

– 35 –

– TUNER SECTION –
(AEP, UK, German model)

1

4.2Vp-p

4.5MHz

IC21 @¢ XOUT

2

2Vp-p

4.332MHz

IC1752 !¢ OEC O

– TUNER SECTION –
(East European, CIS model)

1

4.2Vp-p

4.5MHz

IC21 @¢ XOUT

– DISPLAY SECTION –

1

4Vp-p

8MHz

IC601 8 X-OUT

2

4.3Vp-p

8MHz

IC801 2 X-OUT

3

3.6Vp-p

4.09MHz

IC851 2 TX

– MAIN SECTION –

1

5MHz

IC501 0 X2

2

32.768kHz

IC501 !£ XT2

5.5Vp-p

5Vp-p

– 36 –

HCD-GRX8/R800/RX88/RX99

d

• Semiconductor
Location

Ref. No. Location
IC101 C-5

IC102 B-5 IC103 C-6

Q101 C-3

7-3. PRINTED WIRING BOARD — CD SECTION —

• See page 20 for Circuit Boards Location.

• Indication of transistor

C

Q

These are omitte

EB

(Page 38)

– 37 – – 38 –