Sony SA-WRT4 - Servicing Notes; Disassembly

HT-RT4/RT40
4
1. SERVICING NOTES ............................................. 5
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 8
2-2. Front Panel Section-1 ...................................................... 9
2-3. Front Panel Section-2 ...................................................... 10
2-4. Loudspeaker 16cm .......................................................... 11
2-5. Chassis Section ............................................................... 12
2-6. BLUETOOTH Module ................................................... 12
2-7. SPEAKER CHUKEI PC BOAR Board .......................... 13
2-8. MAIN Board (RT4), EG4 MAIN Board (RT40),
CONNECTOR Board, Switching Regulator ................. 14
3. TEST MODE ............................................................ 15
4. TROUBLESHOOTING ........................................... 16
5. DIAGRAMS
5-1. Block Diagram - MAIN CONTROL Section - ............... 21
5-2. Block Diagram - AUDIO Section - ................................. 22
5-3. Block Diagram - POWER SUPPLY Section - ................ 23
TABLE OF CONTENTS
5-4. Printed Wiring Boards - MAIN Board (RT4),
EG4 MAIN Board (RT40) - ............................................ 25
5-5. Printed Wiring Boards - EG4 OLED CHUKEI
PC Board - ...................................................................... 26
5-6. Schematic Diagram - EG4 OLED CHUKEI
PC Board - ...................................................................... 26
5-7. Printed Wiring Board - TOUCH Board - ........................ 27
5-8. Schematic Diagram - TOUCH Board - ........................... 27
5-9. Printed Wiring Board - SPEAKER CHUKEI PC
BOAR Board - ................................................................ 28
5-10. Schematic Diagram - SPEAKER CHUKEI PC
BOAR Board - ................................................................ 28
5-11. Printed Wiring Board - CONNECTOR Board - ............. 29
5-12. Schematic Diagram - CONNECTOR Board - ................ 29
5-13. Printed Wiring Board - USB Board - .............................. 29
6. EXPLODED VIEWS
6-1. Overall Section ............................................................... 32
6-2. Chassis Section ............................................................... 33
6-3. MAIN Board Section ...................................................... 34
7. ELECTRICAL PARTS LIST .............................. 35
Accessories are listed in the last part of the electrical parts list.