Read Sony HCD-EC70 / MHC-EC70 Service Manual online
2
HCD-EC70
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
6
3-2.
Side Panel (R) And Side Panel (L) ..................................
7
3-3.
Top Section ......................................................................
7
3-4.
Mechanical Deck .............................................................
8
3-5.
Belt (1), Belt (2) ..............................................................
8
3-6.
Front Panel Section .........................................................
9
3-7.
PANEL Board .................................................................. 10
3-8.
JACK Board ..................................................................... 10
3-9.
MAIN Board .................................................................... 11
3-10. CD Section And Base Unit
(BU-K6BD83S2-WOD) Section ..................................... 12
3-11. Optical Pick-up (KSM-213DCP), BD83S Board ............ 13
3-12. Belt (DLM3A) ................................................................. 14
3-13. Chassis (PT) Section ....................................................... 14
3-14. PT-AC Board, POWER Transformer ............................... 15
3-15. LOW-AMP Board, HIGH-AMP Board,
3-12. Belt (DLM3A) ................................................................. 14
3-13. Chassis (PT) Section ....................................................... 14
3-14. PT-AC Board, POWER Transformer ............................... 15
3-15. LOW-AMP Board, HIGH-AMP Board,
TRANSISTOR Board ...................................................... 15
3-16. DC Fan ............................................................................ 16
4.
MECHANICAL ADJUSTMENTS
......................... 17
5.
ELECTRICAL ADJUSTMENTS
.......................... 17
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
6.
DIAGRAMS
6-1.
Block Diagram — BD/DRIVER Section — .................. 22
6-2.
Block Diagram — TUNER Section — .......................... 23
6-3.
Block Diagram — MAIN Section — ............................. 24
6-4.
Printed Wiring Board — BD83S Board — .................... 25
6-5.
Schematic Diagram — BD83S Board — ....................... 26
6-6.
Printed Wiring Board — MAIN Section — ................... 27
6-7.
Schematic Diagram — MAIN Section (1/5) — ............. 28
6-8.
Schematic Diagram — MAIN Section (2/5) — ............. 29
6-9.
Schematic Diagram — MAIN Section (3/5) — ............. 30
6-10. Schematic Diagram — MAIN Section (4/5) — ............. 31
6-11. Schematic Diagram — MAIN Section (5/5) — ............. 32
6-12. Printed Wiring Board — PANEL Board — ................... 33
6-13. Schematic Diagram — PANEL Board — ...................... 34
6-14. Printed Wiring Board — AMP Section — ..................... 35
6-15. Schematic Diagram — AMP Section — ........................ 36
6-16. Printed Wiring Board — PT-AC Board — ..................... 37
6-17. Schematic Diagram — PT-AC Board — ........................ 37
6-11. Schematic Diagram — MAIN Section (5/5) — ............. 32
6-12. Printed Wiring Board — PANEL Board — ................... 33
6-13. Schematic Diagram — PANEL Board — ...................... 34
6-14. Printed Wiring Board — AMP Section — ..................... 35
6-15. Schematic Diagram — AMP Section — ........................ 36
6-16. Printed Wiring Board — PT-AC Board — ..................... 37
6-17. Schematic Diagram — PT-AC Board — ........................ 37
7.
EXPLODED VIEWS
7-1.
Overall Section ................................................................ 46
7-2.
Front Panel Section ......................................................... 47
7-3.
Chassis Section ................................................................ 48
7-4.
Top Section ...................................................................... 49
7-5.
CD Mechanism Deck Section (BU-K6BD83S2-WOD) . 50
8.
ELECTRICAL PARTS LIST
.................................. 51
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