Sony CFD-S250L, Service Manual

3

TABLE OF CONTENTS

1. SERVICING NOTES

......................................................... 4

2. GENERAL

............................................................................ 5

3. DISASSEMBLY

3-1.   Cabinet (Upper) Assy .......................................................... 7
3-2.   Cabinet (Front) Assy, Cabinet (Rear) Assy ......................... 7
3-3.   Wires ................................................................................... 8
3-4.   MD Block ............................................................................ 8
3-5.   Holder (Cassette) ................................................................. 9
3-6.   LCD Board .......................................................................... 9
3-7.   Main Board ....................................................................... 10
3-8.   Tuner Board ....................................................................... 10
3-9.   Power Board ...................................................................... 11
3-10. CD Lid ............................................................................... 11
3-11. CD Block Assy .................................................................. 12
3-12. Optical Pick-up ................................................................. 12
3-13. R/P Head (HRP301), TC Board ........................................ 13
3-14. Motor Assy (M801), Main Belt (B), Sub Belt (B) ............ 13

4. MECHANICAL ADJUSTMENTS

............................... 14

5. ELECTRICAL ADJUSTMENTS

Tape Section .......................................................................... 14
Tuner Section ......................................................................... 15
CD Section ............................................................................ 16

6. DIAGRAMS

6-1.   IC Pin Description ............................................................. 17
6-2.   Circuit Boards Location .................................................... 17
6-3.   Block Diagram – CD Section – ......................................... 18
6-4.   Block Diagram – Main Section – ...................................... 19
6-5.   Printed Wiring Board – CD Section – ............................... 20
6-6.   Schematic Diagram – CD Section – .................................. 21
6-7.   Printed Wiring Board – Tuner Section – ........................... 22
6-8.   Schematic Diagram – Tuner Section – .............................. 23
6-9.   Printed Wiring Boards – Main Section – .......................... 24
6-10. Schematic Diagram – Main Section (1/2) – ...................... 25
6-11. Schematic Diagram – Main Section (2/2) – ...................... 26
6-12. Printed Wiring Board – TC Section – ............................... 27
6-13. Schematic Diagram – TC Section – .................................. 28
6-14. Printed Wiring Boards – Control Section – ....................... 29
6-15. Schematic Diagram – Control Section – ........................... 30
6-16. Printed Wiring Boards – Power Supply Section – ............ 31
6-17. Schematic Diagram – Power Supply Section – ................. 32
6-18. IC Block Diagrams ............................................................ 33

7. EXPLODED VIEWS

7-1.   Main Section ..................................................................... 36
7-2.   Cabinet (Front) Section ..................................................... 37
7-3.   Cabinet (Upper) (1) Section .............................................. 38
7-4.   Cabinet (Upper) (2) Section .............................................. 39
7-5.   Cabinet (Rear) Section ...................................................... 40
7-6.   Tape Mechanism Section .................................................. 41
7-7.   CD Mechanism Section .................................................... 42

8. ELECTRICAL PARTS LIST

......................................... 43

CFD-S250L