Table Of Contents - Sony XR-C7220R Service Manual

TABLE OF CONTENTS

1. GENERAL
Location of controls ........................................................ 3
Resetting the unit ............................................................ 4
Detaching the front panel ................................................ 4
Setting the clock .............................................................. 4
Labelling the rotary commander ..................................... 4
Using the rotary commander .......................................... 4
Adjusting the sound characteristics ................................ 5
Attenuating the sound ..................................................... 5
Changing the sound and display settings ....................... 5
Installation ....................................................................... 6
Connections ..................................................................... 7
2. DISASSEMBLY
......................................................... 12
3. ASSEMBLY OF MECHANISM DECK
4. MECHANICAL ADJUSTMENTS
5. ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 18
Tape Deck Section .......................................................... 18
Tuner Section .................................................................. 19
6. DIAGRAMS
6-1. Block Diagram - TUNER/TAPE Section - ................... 23
6-2. Block Diagram - MAIN Section - ................................. 25
6-3. Block Diagram
- DISPLAY/KEY CONTROL Section - ........................ 27
6-4. Block Diagram
- BUS CONTROL/POWER SUPPLY Section - ........... 29
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 31
6-6. Printed Wiring Board
- Main Board (Component Side) - ................................ 33
6-7. Printed Wiring Board
- Main Board (Conductor Side) - .................................. 35
6-8. Schematic Diagram - Main Board (1/4) - ..................... 37
6-9. Schematic Diagram - Main Board (2/4) - ..................... 39
6-10. Schematic Diagram - Main Board (3/4) - ..................... 41
6-11. Schematic Diagram - Main Board (4/4) - ..................... 43
6-12. Printed Wiring Board - KEY Board - ........................... 45
6-13. Schematic Diagram - KEY Board - .............................. 47
6-14. Printed Wiring Board
- SUB/INVERTER Board - ........................................... 49
6-15. Schematic Diagram - SUB/INVERTER Board - .......... 50
6-16. IC Pin Function Description ........................................... 54
7. EXPLODED VIEWS
8. ELECTRICAL PARTS LIST
........... 14
....................... 17
................................................ 58
............................... 61
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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