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MDX-C7900/C7900R
SERVICE MANUAL
Ver 1.1 2001.08
US Model Canadian Model E Model
MDX-C7900
AEP Model UK Model
MDX-C7900R
Refer to RM-X4S Service Manual (9-925698-[][]) issued previously for information of remote commander (RM-X4S) supplied with this set.
Photo: MDX-C7900
Model Name Using Similar Mechanism Base Mechanism Type Optical Pick-Up Name
NEW MG-164KT-138 KMS-241A/J2N
SPECIFICATIONS
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MDX-C7900
FM/AM MINIDISC PLAYER
MDX-C7900R
FM/MW/LW MINIDISC PLAYER
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9-925-787-12
2001H0500-1 C 2001.8
Sony Corporation
e Vehicle Company Shinagawa Tec Service Manual Production Group
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Ver 1.1
TABLE OF CONTENTS 1. 2. SERVICE NOTE ....................................................... 3 GENERAL
Location of Controls (MDX-C7900) .............................. 4 Location of Controls (MDX-C7900R) ........................... 5 Resetting the Unit ........................................................... 6 Detaching the Front Panel ............................................... 6 Preparing the Rotary Commander .................................. 6 Setting the Clock ............................................................. 6 Installation (US, Canadian) ............................................ 7 Installation (AEP, UK, E) ............................................... 8 Connections ..................................................................... 10
3. 4.
DISASSEMBLY ......................................................... 13 ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 18 MD Section ..................................................................... 18 Tuner Section .................................................................. 18
5.
DIAGRAMS
5-1. Block Diagram – SERVO Section – ............................... 21 5-2. Block Diagram – MAIN Section – ................................. 23 5-3. Block Diagram – DISPLAY/KEY CONTROL Section – ........................ 25 5-4. Block Diagram – BUS CONTROL/POWER SUPPLY Section – ........... 27 5-5. Printed Wiring Boards – MECHANISM DECK Section – ................................. 29 5-6. Schematic Diagram – MECHANISM DECK Section – ................................. 31 5-7. Schematic Diagram – MAIN Section – .......................... 35 5-8. Printed Wiring Board – MAIN Section – ....................... 39 5-9. Printed Wiring Board – PANEL Section – ..................... 43 5-10. Schematic Diagram – PANEL Section – ........................ 45 5-11. IC Pin Function Description ........................................... 55
6. 7.
EXPLODED VIEWS ................................................ 64 ELECTRICAL PARTS LIST ............................... 68
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SECTION 1 SERVICE NOTE
• Type A/B Discrimination
[MAIN BOARD] (Component Side)
Flexible Circuit Board Repairing • Keep the temperature of the soldering.