Table Of Contents - Sony CDX-A251C Service Manual

CDX-A251C
4

TABLE OF CONTENTS

1. GENERAL
Location of controls and basic operations ............................... 5
Connections ............................................................................. 7
2. DISASSEMBLY
2-1. Sub Panel Assy .................................................................. 10
2-2. CD Mechanism Block ....................................................... 11
2-3. Main Board ....................................................................... 11
2-4. Chassis (T) Sub Assy ........................................................ 12
2-5. Roller Arm Assy ................................................................ 12
2-6. Chassis (OP) Assy ............................................................. 13
2-7. Optical Pick-up ................................................................. 13
2-8. SL Motor Assy (M902) ..................................................... 14
2-9. LE Motor Assy (M903) ..................................................... 14
2-10. Servo Board ....................................................................... 15
3. DIAGRAMS
3-1. Circuit Boards Location .................................................... 16
3-2. Block Diagram - CD Section - ......................................... 17
3-3. Block Diagram - Main Section - ...................................... 18
3-4. Block Diagram - Display Section - .................................. 19
3-5. Printed Wiring Boards - CD Mechanism Section - ......... 21
3-6. Schematic Diagram - CD Mechanism Section (1/2) - ..... 22
3-7. Schematic Diagram - CD Mechanism Section (2/2) - ..... 23
3-8. Printed Wiring Board - Main Section - ............................ 24
3-9. Schematic Diagram - Main Section (1/4) - ...................... 25
3-10. Schematic Diagram - Main Section (2/4) - ...................... 26
3-11. Schematic Diagram - Main Section (3/4) - ...................... 27
3-12. Schematic Diagram - Main Section (4/4) - ...................... 28
3-13. Printed Wiring Boards - Key Section - ............................ 29
3-14. Schematic Diagram - Key Section - ................................ 30
4. EXPLODED VIEWS
4-1. Main Section ..................................................................... 38
4-2. Front Panel Section ........................................................... 39
4-3. CD Mechanism Section (1) ............................................... 40
4-4. CD Mechanism Section (2) ............................................... 41
4-5. CD Mechanism Section (3) ............................................... 42
4-6. CD Mechanism Section (4) ............................................... 43
5. ELECTRICAL PARTS LIST
........................................ 44