HCD-GT111/GT222/GT444/GT555
2
1.
SERVICING NOTES
............................................. 3
2. GENERAL
.................................................................. 7
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 9
3-2. Side-L/R
Case
................................................................. 10
3-3. Top Panel Block .............................................................. 10
3-4. Tape Mechanism Deck .................................................... 11
3-5. Front Panel Block ........................................................... 11
3-6. Back
Panel
...................................................................... 12
3-7. MAIN
Board
................................................................... 12
3-8. CD Mechanism Block ..................................................... 13
3-9. POWERAMP
Board
....................................................... 13
3-10. Base Unit ......................................................................... 14
3-11. OP Base Assy (KSM-213D) ........................................... 14
3-12. 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 - ................ 23
7-2. Block Diagram - MAIN Section - ................................... 24
7-3. Block Diagram - AMP Section - ..................................... 25
7-4. Block
Diagram
- PANEL, POWER SUPPLY Section - ........................... 26
7-5. Schematic Diagram - CD Board (1/2) - .......................... 28
7-6. Schematic Diagram - CD Board (2/2) - .......................... 29
7-7. Printed Wiring Board - CD Board - ................................ 30
7-8. Printed Wiring Board - TC Board - ................................. 31
7-9. Schematic Diagram - TC Board - ................................... 31
7-10. Printed Wiring Board - USB Board - .............................. 32
7-11. Schematic Diagram - USB Board - ................................. 33
7-12. Printed Wiring Boards - REG Section - .......................... 34
7-13. Schematic Diagram - REG Section - .............................. 34
7-14. Printed Wiring Board - MAIN Board - ........................... 35
7-15. Schematic Diagram - MAIN Board (1/4) - ..................... 36
7-16. Schematic Diagram - MAIN Board (2/4) - ..................... 37
TABLE OF CONTENTS
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
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 chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
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.
This appliance is
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures other than
those speci
fi
ed herein may result in hazardous radiation exposure.
7-17. Schematic Diagram - MAIN Board (3/4) - ..................... 38
7-18. Schematic Diagram - MAIN Board (4/4) - ..................... 39
7-19. Printed Wiring Boards - JACK Section - ........................ 40
7-20. Schematic Diagram - JACK Section - ............................ 40
7-21. Printed Wiring Board - POWERAMP Board - ............... 41
7-22. Schematic Diagram - POWERAMP Board (1/2) - ......... 42
7-23. Schematic Diagram - POWERAMP Board (2/2) - ......... 43
7-24. Printed Wiring Board - DISPLAY Board - ..................... 44
7-25. Schematic Diagram - DISPLAY Board - ........................ 45
7-26. Printed Wiring Boards - PANEL Section - ..................... 46
7-27. Schematic Diagram - PANEL Section - .......................... 47
7-28. Printed Wiring Board
- TRANS1 Board (GT111: 120V AC area in E, 240V AC
area in E, Chilean and Peruvian models) - ...................... 48
7-29. Schematic Diagram - TRANS1 Board
(GT111: 120V AC area in E, 240V AC area in E,
Chilean and Peruvian models) - ...................................... 49
7-30. Printed Wiring Board - TRANS2 Board
(GT222/GT444/GT555)
-
...............................................
50
7-31. Schematic Diagram - TRANS2 Board
(GT222/GT444/GT555)
-
...............................................
51
7-32. Printed Wiring Board - TRANSX Board
(GT111: AEP, Russian and Argentina models) - ............. 52
7-33. Schematic Diagram - TRANSX Board
(GT111: AEP, Russian and Argentina models) - ............. 53
8.
EXPLODED VIEWS
8-1. Case
Section
.................................................................... 63
8-2. Loading Panel Section .................................................... 64
8-3. DISPLAY Board Section ................................................ 65
8-4. Front Panel Section ......................................................... 66
8-5. Meter
Display
Assy
......................................................... 67
8-6. Top Panel Section ........................................................... 68
8-7. Back Panel Section ......................................................... 69
8-8. MAIN Board Section ...................................................... 70
8-9. Chassis
Section
............................................................... 71
8-10. CD Mechanism Section (CDM88A-K6BD93-WOD) .... 72
9.
ELECTRICAL PARTS LIST
.............................. 73