Sony HCD-GX750 / HCD-RG551 / HCD-RX550 / MHC-GX750 / MHC-RG551S Service Manual ▷ View online
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TABLE OF CONTENTS
HCD-GX750/RG551/RX550
1. SERVICE NOTE
1-1. Service Position-1 (AMP Board) ........................................ 6
1-2. Service Position-2 (BD81A Board) .................................... 6
1-2. Service Position-2 (BD81A Board) .................................... 6
2. GENERAL
Main Unit ................................................................................ 7
Remote Control ....................................................................... 8
Remote Control ....................................................................... 8
3. DISASSEMBLY
3-1. Case (Top) ......................................................................... 10
3-2. CD Door ............................................................................ 10
3-3. Front Panel Section ........................................................... 11
3-4. CD Mechanism Deck ........................................................ 11
3-5. Tape Mechanism Deck, Game Jack Board ........................ 12
3-6. Panel Board ....................................................................... 12
3-7. Back Panel Section, Sub Trans Board ............................... 13
3-8. Trans Board ....................................................................... 13
3-9. Main Board ....................................................................... 14
3-10. Sub Woofer Board ............................................................. 14
3-11. Amp Board ........................................................................ 15
3-12. BD81A Board ................................................................... 15
3-13. Connect Board ................................................................... 16
3-14. Driver Board, SW Board ................................................... 16
3-15. Optical Pick-up ................................................................. 17
3-16. Sensor Board ..................................................................... 17
3-17. Motor (TB) Board ............................................................. 18
3-18. Motor (LD) Board ............................................................. 18
3-2. CD Door ............................................................................ 10
3-3. Front Panel Section ........................................................... 11
3-4. CD Mechanism Deck ........................................................ 11
3-5. Tape Mechanism Deck, Game Jack Board ........................ 12
3-6. Panel Board ....................................................................... 12
3-7. Back Panel Section, Sub Trans Board ............................... 13
3-8. Trans Board ....................................................................... 13
3-9. Main Board ....................................................................... 14
3-10. Sub Woofer Board ............................................................. 14
3-11. Amp Board ........................................................................ 15
3-12. BD81A Board ................................................................... 15
3-13. Connect Board ................................................................... 16
3-14. Driver Board, SW Board ................................................... 16
3-15. Optical Pick-up ................................................................. 17
3-16. Sensor Board ..................................................................... 17
3-17. Motor (TB) Board ............................................................. 18
3-18. Motor (LD) Board ............................................................. 18
4. TEST MODE
..................................................................... 19
5. DIAGRAMS
5-1. IC Pin Descriptions ........................................................... 22
5-2. Block Diagram –CD Section– ........................................... 27
5-3. Block Diagram –Main Section– ........................................ 28
5-4. Block Diagram –Panel/Power Section– ............................ 29
5-5. Block Diagram –Sub Woofer Section– ............................. 30
5-6. Circuit Boards Location .................................................... 30
5-2. Block Diagram –CD Section– ........................................... 27
5-3. Block Diagram –Main Section– ........................................ 28
5-4. Block Diagram –Panel/Power Section– ............................ 29
5-5. Block Diagram –Sub Woofer Section– ............................. 30
5-6. Circuit Boards Location .................................................... 30
5-7. Note for Printed Wiring Boards
and Schematic Diagrams .................................................. 31
5-8. Waveforms ......................................................................... 31
5-9. Printed Wiring Board –CD Mechanism Section (1/2)– .... 32
5-10. Schematic Diagram –CD Mechanism Section (1/2)– ....... 33
5-11. Printed Wiring Boards –CD Mechanism Section (2/2)– ... 34
5-12. Schematic Diagram –CD Mechanism Section (2/2)– ....... 35
5-13. Schematic Diagram –Main Section (1/2)– ........................ 36
5-14. Schematic Diagram –Main Section (2/2)– ........................ 37
5-15. Printed Wiring Board –Main Section– .............................. 38
5-16. Printed Wiring Boards –Panel Section– ............................ 39
5-17. Schematic Diagram –Panel Section (1/2)– ....................... 40
5-18. Schematic Diagram –Panel Section (2/2)– ....................... 41
5-19. Printed Wiring Boards –Jack Section– .............................. 42
5-20. Schematic Diagram –Jack Section– .................................. 43
5-21. Printed Wiring Board –Sub Woofer Section– ................... 44
5-22. Schematic Diagram –Sub Woofer Section– ...................... 45
5-23. Printed Wiring Board
5-9. Printed Wiring Board –CD Mechanism Section (1/2)– .... 32
5-10. Schematic Diagram –CD Mechanism Section (1/2)– ....... 33
5-11. Printed Wiring Boards –CD Mechanism Section (2/2)– ... 34
5-12. Schematic Diagram –CD Mechanism Section (2/2)– ....... 35
5-13. Schematic Diagram –Main Section (1/2)– ........................ 36
5-14. Schematic Diagram –Main Section (2/2)– ........................ 37
5-15. Printed Wiring Board –Main Section– .............................. 38
5-16. Printed Wiring Boards –Panel Section– ............................ 39
5-17. Schematic Diagram –Panel Section (1/2)– ....................... 40
5-18. Schematic Diagram –Panel Section (2/2)– ....................... 41
5-19. Printed Wiring Boards –Jack Section– .............................. 42
5-20. Schematic Diagram –Jack Section– .................................. 43
5-21. Printed Wiring Board –Sub Woofer Section– ................... 44
5-22. Schematic Diagram –Sub Woofer Section– ...................... 45
5-23. Printed Wiring Board
–Power Amp Section (GX750/RX550)– ........................... 46
5-24. Printed Wiring Boards
–Transformer Section (GX750/RX550)– .......................... 47
5-25. Schematic Diagram –Power Section (GX750/RX550)– ... 48
5-26. Printed Wiring Board –Power Amp Section (RG551)– .... 49
5-27. Printed Wiring Boards –Transformer Section (RG551)– .. 50
5-28. Schematic Diagram –Power Section (RG551)– ................ 51
5-29. IC Block Diagrams ............................................................ 52
5-26. Printed Wiring Board –Power Amp Section (RG551)– .... 49
5-27. Printed Wiring Boards –Transformer Section (RG551)– .. 50
5-28. Schematic Diagram –Power Section (RG551)– ................ 51
5-29. IC Block Diagrams ............................................................ 52
6. EXPLODED VIEWS
6-1. Main Section ..................................................................... 54
6-2. Front Panel Section (1) ...................................................... 55
6-3. Front Panel Section (2) ...................................................... 56
6-4. Front Panel Section (3) ...................................................... 57
6-5. Main Board Section .......................................................... 58
6-6. CD Mechanism Section (1) ............................................... 59
6-7. CD Mechanism Section (2) ............................................... 60
6-2. Front Panel Section (1) ...................................................... 55
6-3. Front Panel Section (2) ...................................................... 56
6-4. Front Panel Section (3) ...................................................... 57
6-5. Main Board Section .......................................................... 58
6-6. CD Mechanism Section (1) ............................................... 59
6-7. CD Mechanism Section (2) ............................................... 60
7. ELECTRICAL PARTS LIST
........................................ 61
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HCD-GX750/RG551/RX550
SECTION 1
SERVICING NOTE
1-1. SERVICE POSITION-1 (AMP BOARD)
1-2. SERVICE POSITION-2 (BD81A BOARD)
front panel
CD mechanism deck
AMP board
To inspect the AMP board, turn both of the front panel
and the CD mechanism deck so that the left side of the product faces down.
and the CD mechanism deck so that the left side of the product faces down.
BD81A board
CD mechanism deck
Remove the CD mechanism deck and place it on top of the pedestal as shown.
Inspect the BD81A board in this set up.
Inspect the BD81A board in this set up.
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HCD-GX750/RG551/RX550
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
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HCD-GX750/RG551/RX550
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