Sony PMC-MD55 - Md Boombox, Service Manual

Page: 111 / 220

– 2 –
1. SERVICING NOTES
.............................................. 3
2. GENERAL
Playing a CD .................................................................. 6
Recording a Whole CD .................................................. 6
Playing an MD ............................................................... 7
Listening to the radio ..................................................... 7
Setting the Clock ............................................................ 8
Hooking up the System .................................................. 8
3. DISASSEMBLY
........................................................ 9
4. TEST MODE
............................................................. 15
5. ELECTRICAL ADJUSTMENTS
Tuner Section ................................................................. 19
MD Section .................................................................... 21
CD Section ..................................................................... 28
Display Section .............................................................. 30
6. DIAGRAMS
6-1. Block Diagram – TUNER Section – ............................ 31
6-2
Block Diagram – MD Section – ................................... 34
6-3. Block Diagram – CD Section – .................................... 37
6-4. Block Diagram
– FUNCTION SELECT/PANEL Section – ................... 40
6-5. Block Diagram
– POWER AMP/POWER SUPPLY Section – .............. 43
6-6. Block Diagram – SUPER WOOFER Section – ........... 45
6-7. Printed Wiring Board – TUNER Section – .................. 49
6-8. Schematic Diagram – TUNER Section – ..................... 51
6-9. Schematic Diagram – BD Section – ............................. 53
6-10. Printed Wiring Boards – BD Section – ........................ 57
6-11. Printed Wiring Board – DG Section – .......................... 59
6-12. Schematic Diagram – DG Section – ............................. 61
6-13. Printed Wiring Boards – MAIN Section – ................... 64
6-14. Schematic Diagram – MAIN (CD) Section – .............. 67
6-15. Schematic Diagram
– MAIN (SYSTEM CONTROL) Section – .................. 70
6-16. Schematic Diagram
– MAIN (FUNCTION SELECT) Section – .................. 73
6-17. Printed Wiring Board – AUDIO/JACK Section – ........ 75
6-18. Schematic Diagram – AUDIO/JACK Section – .......... 77
6-19. Schematic Diagram – CD MOTOR Section – ............. 79
6-20. Printed Wiring Board – CD MOTOR Section – .......... 81
6-21. Printed Wiring Board
– CD OPEN/CLOSE Section – ...................................... 82
6-22. Schematic Diagram – CD OPEN/CLOSE Section – ... 83
6-23. Printed Wiring Boards – PANEL Section – ................. 86
6-24. Schematic Diagram – PANEL Section – ...................... 89
6-25. Printed Wiring Boards
– POWER AMP/POWER Section – .............................. 91
6-26. Schematic Diagram
– POWER AMP/POWER Section – .............................. 93
6-27. Printed Wiring Boards
– SUPER WOOFER Section – ...................................... 95
6-28. Schematic Diagram
– SUPER WOOFER Section – ...................................... 97
6-29. IC Pin Function Description .......................................... 108
7. EXPLODED VIEWS
............................................... 118
8. ELECTRICAL PARTS LIST
.............................. 128
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED
LINE WITH MARK
!
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 PUB-
LISHED BY SONY.
TABLE OF CONTENTS
Maximum power output
7 W+7 W
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.
230 V AC, 50 Hz (AEP, UK)
(US, Canadian)
(MW/LW)