Sony HCD-S20 - Servicing Notes; Disassembly Procedures; Test Modes; Electrical Checks

HCD-S20
2
1. SERVICING NOTES ............................................. 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 7
2-2. Top Cover Assy S20........................................................ 7
2-3. Power Cord (AC1), Rear Panel ....................................... 8
2-4. CD Door (S20) ................................................................ 8
2-5. Loader (TDL-5) & OPU Assy (CDM1) .......................... 9
2-6. Front Panel Block ........................................................... 9
2-7. VFD Board ...................................................................... 10
2-8. USB Board ...................................................................... 10
2-9. MAIN Board ................................................................... 11
2-10. POWER Board ................................................................ 11
3. TEST MODE ............................................................ 12
4. ELECTRICAL CHECK ......................................... 13
5. TROUBLESHOOTING .......................................... 14
6. DIAGRAMS
6-1. Block Diagram ................................................................ 16
6-2. Board Component Diagram (1/3) ................................... 17
6-3. Board Component Diagram (2/3) ................................... 18
6-4. Board Component Diagram (3/3) ................................... 19
6-5. Printed Wiring Board - MAIN Board - ........................... 21
6-6. Schematic Diagram - MAIN Board (1/6) - ..................... 22
6-7. Schematic Diagram - MAIN Board (2/6) - ..................... 23
6-8. Schematic Diagram - MAIN Board (3/6) - ..................... 24
6-9. Schematic Diagram - MAIN Board (4/6) - ..................... 25
6-10. Schematic Diagram - MAIN Board (5/6) - ..................... 26
6-11. Schematic Diagram - MAIN Board (6/6) - ..................... 27
6-12. Printed Wiring Board - USB Board - .............................. 28
6-13. Schematic Diagram - USB Board - ................................. 29
6-14. Printed Wiring Board - VFD Board - .............................. 30
6-15. Schematic Diagram - VFD Board - ................................ 31
6-16. Printed Wiring Board - KEY Board -.............................. 32
6-17. Schematic Diagram - KEY Board - ................................ 33
6-18. Schematic Diagram - POWER Board - .......................... 34
6-19. Printed Wiring Board - POWER Board - ........................ 35
7. EXPLODED VIEWS
7-1. Top Cover Section........................................................... 36
7-2. Chassis Section ............................................................... 37
7-3. Front Panel Section ......................................................... 38
TABLE OF CONTENTS
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.
SAFETY-RELATED COMPONENT 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.