HCD-GX45, HCD-RG440, MHC-GX45, MHC-RG440S - Sony Audio Service Manual (repair manual). Page 4

4

Main Unit ................................................................................ 5
Remote Control ....................................................................... 5

2-1.   Case (Top) ........................................................................... 7
2-2.   CD Door .............................................................................. 7
2-3.   CD Mechanism Block ......................................................... 8
2-4.   Front Panel Section ............................................................. 9
2-5.   Tape Mechanism Deck ...................................................... 10
2-6.   Panel Board, 6 Stream Led Board, Remote Board ............ 10
2-7.   Game Jack Board, H/P Jack Board ................................... 11
2-8.   Back Panel Section ............................................................ 11
2-9.   Main Board ....................................................................... 12
2-10. Power Amp Board, Subwoofer Board ............................... 12
2-11. SW Board, Driver Board ................................................... 13
2-12. CD Block Assy .................................................................. 13
2-13. Sensor Board ..................................................................... 14
2-14. Motor (TB) Board ............................................................. 14
2-15. Motor (LD) Board ............................................................. 15
2-16. BD Board .......................................................................... 15
2-17. Optical Pick-up ................................................................. 16

..................................................................... 17

................................. 20

5-1.   IC Pin Descriptions ........................................................... 21
5-2.   Block Diagram –CD Section– ........................................... 25
5-3.   Block Diagram –Tuner/Tape/Panel Section– .................... 26
5-4.   Block Diagram –Amp/Power Supply Section– ................. 27
5-5.   Block Diagram –Sub Woofer Section– ............................. 28
5-6.   Note for Printed Wiring Boards

     and Schematic Diagrams .................................................. 29

5-7.   Waveforms ......................................................................... 29

5-8.   Circuit Boards Location .................................................... 29
5-9.   Printed Wiring Board –CD Mechanism Section (1/2)– .... 30
5-10. Schematic Diagram –CD Mechanism Section (1/2)– ....... 31
5-11. Printed Wiring Boards –CD Mechanism Section (2/2)– ... 32
5-12. Schematic Diagram –CD Mechanism Section (2/2)– ....... 33
5-13. Schematic Diagram –Main Section (1/4)– ........................ 34
5-14. Schematic Diagram –Main Section (2/4)– ........................ 35
5-15. Schematic Diagram –Main Section (3/4)– ........................ 36
5-16. Schematic Diagram –Main Section (4/4)– ........................ 37
5-17. Printed Wiring Board –Main Section– .............................. 38
5-18. Printed Wiring Boards and Schematic Diagram

    –Jack Section– ................................................................... 39

5-19. Printed Wiring Boards –Panel Section– ............................ 40
5-20. Schematic Diagram –Panel Section– ................................ 41
5-21. Printed Wiring Board –Sub Woofer Section– ................... 42
5-22. Schematic Diagram –Sub Woofer Section– ...................... 43
5-23. Schematic Diagram –Power Amp Section (1/2)– ............. 44
5-24. Schematic Diagram –Power Amp Section (2/2)– ............. 45
5-25. Printed Wiring Board –Power Amp Section– ................... 46
5-26. Printed Wiring Board

    –Transformer Section– ...................................................... 47

5-27. Schematic Diagram –Transformer Section– ..................... 48
5-28. IC Block Diagrams ............................................................ 49

6-1.   Main Section ..................................................................... 52
6-2.   Front Panel Section (1) ...................................................... 53
6-3.   Front Panel Section (2) ...................................................... 54
6-4.   Front Panel Section (3) ...................................................... 55
6-5.   Main Board Section .......................................................... 56
6-6.   CD Mechanism Deck Section (1) ..................................... 57
6-7.   CD Mechanism Deck Section (2) ..................................... 58
6-8.   Base Unit Section .............................................................. 59

........................................ 60

– BACK PANEL –

GX45: US, CND

4-244-697-31

RG440: AEP, UK, AUS

4-244-697-41

• Abbreviation

CND : Canadian model
AUS : Australian model

PARTS No.