Read Sony CDX-4240R / CDX-4250R Service Manual online
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TABLE OF CONTENTS
1. GENERAL
Location of controls ................................................................. 4
Getting Started ......................................................................... 4
Setting the clock ...................................................................... 4
CD Player ................................................................................ 4
Radio ....................................................................................... 5
RDS ......................................................................................... 5
Other Functions ....................................................................... 7
Connections ............................................................................. 8
Getting Started ......................................................................... 4
Setting the clock ...................................................................... 4
CD Player ................................................................................ 4
Radio ....................................................................................... 5
RDS ......................................................................................... 5
Other Functions ....................................................................... 7
Connections ............................................................................. 8
2. DISASSEMBLY
2-1. Cover ................................................................................. 10
2-2. Front Panel Assy ............................................................... 10
2-3. Sub Panel (1) Assy ............................................................ 11
2-4. CD Mechanism Block ....................................................... 11
2-5. Main Board ....................................................................... 12
2-6. Heat Sink ........................................................................... 12
2-7. Chassis (T) Sub Assy ........................................................ 13
2-8. Lever Assy ......................................................................... 13
2-9. Servo Board ....................................................................... 14
2-10. Roller Assy ........................................................................ 14
2-11. Chassis (OP) (O/S) Assy ................................................... 15
2-12. Optical Pick-up Block ....................................................... 15
2-2. Front Panel Assy ............................................................... 10
2-3. Sub Panel (1) Assy ............................................................ 11
2-4. CD Mechanism Block ....................................................... 11
2-5. Main Board ....................................................................... 12
2-6. Heat Sink ........................................................................... 12
2-7. Chassis (T) Sub Assy ........................................................ 13
2-8. Lever Assy ......................................................................... 13
2-9. Servo Board ....................................................................... 14
2-10. Roller Assy ........................................................................ 14
2-11. Chassis (OP) (O/S) Assy ................................................... 15
2-12. Optical Pick-up Block ....................................................... 15
3. ELECTRICAL ADJUSTMENTS
Tuner Section ......................................................................... 16
CD Section ............................................................................ 19
CD Section ............................................................................ 19
4. DIAGRAMS
4-1. IC Pin Description ............................................................. 20
4-2. Block Diagram –CD Section– ........................................... 23
4-3. Block Diagram –Tuner Section– ....................................... 25
4-4. Block Diagram –Display Section– .................................... 27
4-5. Circuit Boards Location .................................................... 29
4-6. Printed Wiring Boards –CD Mechanism Section– ............ 31
4-7. Schematic Diagram –CD Mechanism Section– ................ 33
4-8. Printed Wiring Board –Main Section– .............................. 35
4-9. Schematic Diagram –Main Section (1/3)– ........................ 39
4-10. Schematic Diagram –Main Section (2/3)– ........................ 41
4-11. Schematic Diagram –Main Section (3/3)– ........................ 43
4-12. Schematic Diagram –Display Section– ............................. 45
4-13. Printed Wiring Board –Display Section– .......................... 47
4-2. Block Diagram –CD Section– ........................................... 23
4-3. Block Diagram –Tuner Section– ....................................... 25
4-4. Block Diagram –Display Section– .................................... 27
4-5. Circuit Boards Location .................................................... 29
4-6. Printed Wiring Boards –CD Mechanism Section– ............ 31
4-7. Schematic Diagram –CD Mechanism Section– ................ 33
4-8. Printed Wiring Board –Main Section– .............................. 35
4-9. Schematic Diagram –Main Section (1/3)– ........................ 39
4-10. Schematic Diagram –Main Section (2/3)– ........................ 41
4-11. Schematic Diagram –Main Section (3/3)– ........................ 43
4-12. Schematic Diagram –Display Section– ............................. 45
4-13. Printed Wiring Board –Display Section– .......................... 47
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 53
5-2. Front Panel Section ........................................................... 54
5-3. CD Mechanism Section (1) ............................................... 55
5-4. CD Mechanism Section (2) ............................................... 56
5-5. CD Mechanism Section (3) ............................................... 57
5-2. Front Panel Section ........................................................... 54
5-3. CD Mechanism Section (1) ............................................... 55
5-4. CD Mechanism Section (2) ............................................... 56
5-5. CD Mechanism Section (3) ............................................... 57
6. ELECTRICAL PARTS LIST
........................................ 58
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