Read Sony CDX-GT255 Service Manual online
4
CDX-GT255
TABLE OF CONTENTS
1. GENERAL
Location of controls and basic operations ............................... 5
Connections ............................................................................. 6
Connections ............................................................................. 6
2. DISASSEMBLY
2-1. Sub Panel Assy .................................................................... 8
2-2. CD Mechanism Block ......................................................... 8
2-3. Main Board ......................................................................... 9
2-4. Chassis (T) Sub Assy .......................................................... 9
2-5. Roller Arm Assy ................................................................ 10
2-6. Chassis (OP) Assy ............................................................. 10
2-7. Optical Pick-up ................................................................. 11
2-8. SL Motor Assy (M902) ..................................................... 11
2-9. LE Motor Assy (M903) ..................................................... 12
2-10. Servo Board ....................................................................... 12
2-2. CD Mechanism Block ......................................................... 8
2-3. Main Board ......................................................................... 9
2-4. Chassis (T) Sub Assy .......................................................... 9
2-5. Roller Arm Assy ................................................................ 10
2-6. Chassis (OP) Assy ............................................................. 10
2-7. Optical Pick-up ................................................................. 11
2-8. SL Motor Assy (M902) ..................................................... 11
2-9. LE Motor Assy (M903) ..................................................... 12
2-10. Servo Board ....................................................................... 12
3. DIAGRAMS
3-1. Block Diagram – CD Section – ......................................... 13
3-2. Block Diagram – Main Section – ...................................... 14
3-3. Block Diagram – Display Section – .................................. 15
3-4. Circuit Boards Location .................................................... 15
3-5. Printed Wiring Boards – CD Mechanism Section – ......... 17
3-6. Schematic Diagram – CD Mechanism Section (1/2) – ..... 18
3-7. Schematic Diagram – CD Mechanism Section (2/2) – ..... 19
3-8. Printed Wiring Board – Main Section – ............................ 20
3-9. Schematic Diagram – Main Section (1/3) – ...................... 21
3-10. Schematic Diagram – Main Section (2/3) – ...................... 22
3-11. Schematic Diagram – Main Section (3/3) – ...................... 23
3-12. Printed Wiring Boards – Key Section – ............................ 24
3-13. Schematic Diagram – Key Section – ................................ 25
3-2. Block Diagram – Main Section – ...................................... 14
3-3. Block Diagram – Display Section – .................................. 15
3-4. Circuit Boards Location .................................................... 15
3-5. Printed Wiring Boards – CD Mechanism Section – ......... 17
3-6. Schematic Diagram – CD Mechanism Section (1/2) – ..... 18
3-7. Schematic Diagram – CD Mechanism Section (2/2) – ..... 19
3-8. Printed Wiring Board – Main Section – ............................ 20
3-9. Schematic Diagram – Main Section (1/3) – ...................... 21
3-10. Schematic Diagram – Main Section (2/3) – ...................... 22
3-11. Schematic Diagram – Main Section (3/3) – ...................... 23
3-12. Printed Wiring Boards – Key Section – ............................ 24
3-13. Schematic Diagram – Key Section – ................................ 25
4. EXPLODED VIEWS
4-1. Main Section ..................................................................... 32
4-2. Front Panel Section ........................................................... 33
4-3. CD Mechanism Section (1) (MG-611WA-186//C) ........... 34
4-4. CD Mechanism Section (2) (MG-611WA-186//C) ........... 35
4-5. CD Mechanism Section (3) (MG-611WA-186//C) ........... 36
4-6. CD Mechanism Section (4) (MG-611WA-186//C) ........... 37
4-2. Front Panel Section ........................................................... 33
4-3. CD Mechanism Section (1) (MG-611WA-186//C) ........... 34
4-4. CD Mechanism Section (2) (MG-611WA-186//C) ........... 35
4-5. CD Mechanism Section (3) (MG-611WA-186//C) ........... 36
4-6. CD Mechanism Section (4) (MG-611WA-186//C) ........... 37
5. ELECTRICAL PARTS LIST
........................................ 38
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