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HCD-GRX10AV/RX110AV
Canadian Model
AEP Model
UK Model
HCD-RX110AV
E Model
Australian Model
HCD-GRX10AV
SPECIFICATIONS
Photo: HCD-GRX10AV
SERVICE MANUAL
COMPACT DISC DECK RECEIVER
-- Continued on next page --
Model Name Using Similar Mechanism
HCD-H991AV
CD Mechanism Type
CDM38L-5BD29AL/
CDM38LH-5BD29AL
Base Unit Type
BU-5BD29AL
Optical Pick-up Type
KSS-213D/Q-NP
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230AWR1/230PWR1
CD
SECTION
TAPE
DECK
SECTION
HCD-GRX10AV/RX110AV is the
tuner, deck, CD and amplifier section
in MHC-GRX10AV/RX110AV.
MICROFILM


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CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation 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 ir on 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 PROD-
UCT MARKING is located on
the rear exterior.
The following
caution label is
located inside of
the unit.
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
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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 pick-
up block. Therefore, when checking the laser diode emission, ob-
serve 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.
PARTS No.
4-996-819-0
4-996-819-1
4-996-819-2
4-996-819-3
4-996-820-0
4-996-820-1
4-996-820-2
4-996-820-3
4-996-820-4
MODEL
RX110AV: AEP, UK, G
RX110AV: EE, CIS
RX110AV: CND
GRX10AV: TH
GRX10AV: E2, E3
GRX10AV: SP, MY
GRX10AV: HK
GRX10AV: AUS
GRX10AV: EA
MODEL IDENTIFICATION
-- BACK PANEL --
· Abbreviation
CND : Canadian model
G
: German model
EE
: East European model
EA
: Saudi arabia model
HK
: Hong Kong model
SP
: Singapore model
MY
: Malaysia model
AUS : Australian model
TH
: Thai model
E2
: Without SW tuner E model.
E3
: With SW tuner E model.
Parts No.


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TABLE OF CONTENTS
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. Schematic Diagram ­ Surround Section ­ ....................... 83
7-31. Printed Wiring Board ­ Surround Section ­ ..................... 83
7-32. IC Block Diagrams ........................................................... 84
7-33. IC Pin Functions ............................................................... 90
8. EXPLODED VIEWS
8-1. Case Section ...................................................................... 100
8-2. Chassis Section ................................................................. 101
8-3. Front Panel Section ........................................................... 102
8-4. CD Mechanism Deck Section-1
(CDM38L-5BD29AL, CDM38LH-5BD29AL) ............... 103
8-5. CD Mechanism Deck Section-2
(CDM38L-5BD29AL, CDM38LH-5BD29AL) ............... 104
8-6. Base Unit Section (BU-5BD29AL) .................................. 105
8-7. TC Mechanism Section 1
(TCM230AWR1, TCM230PWR1) ................................... 106
8-8. TC Mechanism Section 2
(TCM230AWR1, TCM230PWR1) ................................... 107
9. ELECTRICAL PARTS LIST ...................................... 108
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. Block 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


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SECTION 1
SERVICING NOTE
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
TURNS OFF
1 Remove the Case.
Note for Installation (ROTARY ENCODER)
3 pull-out the disc tray.
2 Turn the cam to the
direction of arrow.
BU cam
Groove
Section A
Note:When attaching the Base unit, Insert the
section A into the groove of BU cam.
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.