Sony hcd gt111 gt222 gt444 gt555

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HCD-GT111/GT222/GT444/GT555

TABLE OF CONTENTS

1. SERVICING NOTES . 3
2. GENERAL .................................................................. 7
3. DISASSEMBLY
3A1. Di ssembly Flow. 9
32 SideAL/R Case 10
3A3. Top Panel Block... 10
3A4. Tape Mechanism Dec 11
3A5. From Panel Block . 11
3A6. Back Panel ......... 12
3A7. MAIN Board ......... 12
3A8. CD Mechanism Bloc 13
3A9. POWERAMP Board. 13
3A10. Base Uni 14
3A1]. OP BaseA y (KSMA213D) . 14
312. Belt (DLM3A) ................................................................ 15
4. TEST MODE ............................................................ 16
5. MECHANICAL ADJUSTMENTS ...................... 20
6. ELECTRICAL ADJUSTMENTS ........................ 21
7. DIAGRAMS
7-1. Block Diagram . CD SERVO, USB Section A ................ 23
7A2. Block Diagram A MAIN Section . 24
7A3. Block Diagram A AMP Section A . 25
7A4. Block Diagram

- PANEL, POWER SUPPLY Section A . 26
7A5. Schematic Diagram A CD Board (1/2) . 28
7A6. Schematic Diagram A CD Board (2/2) . 29
7A7. Printed Wiring Board A CD Board A. . 30
7-8. Printed Wiring Board - TC Board . 31
7A9. Schematic Diagram A TC Board A . . 31
7-10. Printed Wiring Board . USB Board A . 32
7-11. Schematic Diagram A USB Board A.. . 33
7-12. Printed Wiring Boards A REG Section . 34
7-13. Schematic Diagram A REG Section A . 34
7-14. Printed Wiring Board A MAIN Board A . 35
7-15. Schematic Diagram A MAIN Board (1/4) A . 36
7-16. Schematic Diagram A MAIN Board (2/4) A . 37

Notes on chip component replacement

Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be damA
aged 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.

7A17. Schematic Diagram - MAIN Board (3/4) A ..................... 38
7A18. Schematic Diagram A MAIN Board (4/4) 39
7A19. Printed Wiring Boards A JACK Section -.. 40
7A2(). Schematic Diagram A JACK Section A ...... 40
7A21. Printed Wiring Board A POWERAMP Board A 41
7A22. Schematic Diagram A POWERAMP Board (1/2) A 42
7A23. Schematic Diagram A POWERAMP Board (2/2) A 43
7A24. Printed Wiring Board A DISPLAY Board A ......... 44
7A25. Schematic Diagram - DISPLAY Board 45
7A26. Printed Wiring Boards A PANEL Section A 46

7A27. Schematic Diagram A PANEL Section A .......................... 47
7A28. Printed Wiring Board

- TRANS] Board (GT1 1 l: 120V AC area in E, 240V AC

area in E, Chilean and Peruvian models) A ...................... 48
7A29. Schematic Diagram A TRANSI Board

(GT1 11: 120V AC area in E, 240V AC area in E,

Chilean and Peruvian models) A ...................................... 49
730. Printed Wiring Board A TRANSZ Board

(GT222/GT444/GT555) A ...........
7A31. Schematic Diagram A TRANSZ Board

(GT222/GT444/GT555) A ..............
7A32. Printed Wiring Board A TRANSX Board

(GT1 11: AEP, Russian and Argentina models) A ............. 52
7A33. Schematic Diagram A TRANSX Board

(GTlll: AEP, Russian and Argentina models) A ............. 53

8. EXPLODED VIEWS
8A1. Case Section.
8A2. Loading Panel Section
8A3. DISPLAY Board Section
8A4. Front Panel Section.
8A5. Meter Display Assy.
8A6. Top Panel Section
8A7. Back Panel Section .
8A8. MAIN Board Section.
8A9. Cha " Section .......
8A10. CD Mechanism Section (CDMSSAAKoBD93AWOD

9. ELECTRICAL PARTS LIST .............................. 73

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

This appliance is

CLASSt my: mum clam ed as a CLASS 1

LUOKAN 1 LASERLAITE LASER product This

KLASS 1 LASERAPPARAT _ . '
marking is located on the

rear exterior.

SAFETY-RELATED COMPONET WARNING!

COMPONENTS IDENTIFIED BY MARKAOR DOTTED LINE
WITH MARKAON 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.