Read Sony CMT-M373NT / HCD-M373 Service Manual online
3
HCD-M373
1. SERVICING NOTE
························································ 10
2. GENERAL
········································································ 14
3. DISASSEMBLY
······························································ 16
3-1.
Top Panel Section ······················································· 17
3-2.
Cassette Mechanism Deck ········································· 18
3-3.
Front Panel Section ···················································· 18
3-4.
PANEL Board, HP Board, LED Board ······················ 19
3-5.
Back Panel Section ····················································· 20
3-6.
MAIN Board ······························································ 20
3-7.
MD Mechanism Deck (MDM-7S2D) ························ 21
3-8.
DIGITAL Board ························································· 21
3-9.
Holder Assy ································································ 22
3-10. BD (MD) Board ························································· 22
3-11. Motor Section ····························································· 23
3-12. Over Write Head (HR901) ········································· 23
3-13. Mini Disc Device (KMS-262E) ································· 24
3-14. POWER Board, Tuner (FM/AM) ······························· 24
3-15. REG Board, AMP Board ············································ 25
3-16. TRANS Board ···························································· 25
3-17. CD Mechanism Deck (CDM55A-30BBD61B) ········· 26
3-18. Cam (CDM55) ··························································· 26
3-19. Base Unit (BU-30BBD61B) ······································ 27
3-20. Optical Pick-Up (BU-30B Assy) ································ 27
3-11. Motor Section ····························································· 23
3-12. Over Write Head (HR901) ········································· 23
3-13. Mini Disc Device (KMS-262E) ································· 24
3-14. POWER Board, Tuner (FM/AM) ······························· 24
3-15. REG Board, AMP Board ············································ 25
3-16. TRANS Board ···························································· 25
3-17. CD Mechanism Deck (CDM55A-30BBD61B) ········· 26
3-18. Cam (CDM55) ··························································· 26
3-19. Base Unit (BU-30BBD61B) ······································ 27
3-20. Optical Pick-Up (BU-30B Assy) ································ 27
4. TEST MODE
···································································· 28
5. ELECTRICAL ADJUSTMENTS
TAPE SECTION ·································································· 33
CD SECTION ······································································ 35
MD SECTION ····································································· 36
CD SECTION ······································································ 35
MD SECTION ····································································· 36
6. DIAGRAMS
6-1.
Circuit Boards Location ············································· 47
6-2.
Block Diagrams
– CD Section – ··························································· 48
– MD Section – ·························································· 49
– USB Section – ························································· 50
– MAIN Section – ······················································ 51
– CD Section – ··························································· 48
– MD Section – ·························································· 49
– USB Section – ························································· 50
– MAIN Section – ······················································ 51
TABLE OF CONTENTS
6-3.
Printed Wiring Board – BD (CD) Board – ················· 52
6-4.
Schematic Diagram – BD (CD) Board – ··················· 53
6-5.
Printed Wiring Board – BD (MD) Board – ················ 54
6-6.
Schematic Diagram – BD (MD) Board (1/2) – ·········· 55
6-7.
Schematic Diagram – BD (MD) Board (2/2) – ·········· 56
6-8.
Printed Wiring Board – DIGITAL Board – ················ 57
6-9.
Schematic Diagram – DIGITAL Board (1/2) – ·········· 58
6-10. Schematic Diagram – DIGITAL Board (2/2) – ·········· 59
6-11. Printed Wiring Board – TC Board – ·························· 60
6-12. Schematic Diagram – TC Board – ····························· 61
6-13. Printed Wiring Board – MAIN Section – ··················· 62
6-14. Schematic Diagram – MAIN Section (1/2) – ············· 63
6-15. Schematic Diagram – MAIN Section (2/2) – ············· 64
6-16. Printed Wiring Board – HP Board – ·························· 65
6-17. Schematic Diagram – HP Board – ····························· 66
6-18. Printed Wiring Board – PANEL Section – ················· 67
6-19. Schematic Diagram – PANEL Section – ···················· 68
6-20. Printed Wiring Board
6-11. Printed Wiring Board – TC Board – ·························· 60
6-12. Schematic Diagram – TC Board – ····························· 61
6-13. Printed Wiring Board – MAIN Section – ··················· 62
6-14. Schematic Diagram – MAIN Section (1/2) – ············· 63
6-15. Schematic Diagram – MAIN Section (2/2) – ············· 64
6-16. Printed Wiring Board – HP Board – ·························· 65
6-17. Schematic Diagram – HP Board – ····························· 66
6-18. Printed Wiring Board – PANEL Section – ················· 67
6-19. Schematic Diagram – PANEL Section – ···················· 68
6-20. Printed Wiring Board
– REG Board / TRANS Board – ································ 69
6-21. Schematic Diagram – REG Board / TRANS Board – 70
6-22. Printed Wiring Board – AMP Board – ······················· 71
6-23. Schematic Diagram – AMP Board – ·························· 72
6-24. Printed Wiring Board – POWER Board – ·················· 73
6-25. Schematic Diagram – POWER Board – ···················· 74
6-26. IC Pin Function Description ······································ 84
6-22. Printed Wiring Board – AMP Board – ······················· 71
6-23. Schematic Diagram – AMP Board – ·························· 72
6-24. Printed Wiring Board – POWER Board – ·················· 73
6-25. Schematic Diagram – POWER Board – ···················· 74
6-26. IC Pin Function Description ······································ 84
7. EXPLODED VIEWS
7-1.
Overall Section ··························································· 90
7-2.
Front Panel Section ···················································· 91
7-3.
Chassis Section ·························································· 92
7-4.
MD Mechanism Deck Section-1 (MDM-7S2D) ········ 93
7-5.
MD Mechanism Deck Section-2 (MDM-7S2D) ········ 94
7-6.
CD Mechanism Deck Section
(CDM55A-30BBD61B) ············································· 95
(CDM55A-30BBD61B) ············································· 95
7-7.
Base Unit Section (BU-30BBD61B) ························· 96
8. ELECTRICAL PARTS LIST
······································· 97
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