Sony XR-C8220, Service Manual

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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 .......................................... 5
Adjusting the sound characteristics ................................ 5
Attenuating the sound ..................................................... 5
Changing the sound and display settings ....................... 5
Adjusting the frequency of the subwoofer (S) ............... 5
Adjusting the sound and
frequency of the equalizer ..............................................
5
Changing the line output level ........................................ 5
Installation ....................................................................... 6
Connections ..................................................................... 7
2. DISASSEMBLY
......................................................... 9
3. ASSEMBLY OF MECHANISM DECK
........... 11
4. MECHANICAL ADJUSTMENTS
....................... 14
5. ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 14
Tape Deck Section .......................................................... 14
Tuner Section .................................................................. 15
6. DIAGRAMS
6-1. Block Diagram – TUNER/TAPE Section – ................... 19
6-2. Block Diagram – MAIN Section – ................................. 21
6-3. Block Diagram
– DISPLAY/KEY CONTROL Section – ........................ 23
6-4. Block Diagram
– BUS CONTROL/POWER SUPPLY Section – ........... 25
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
6-6. Printed Wiring Board
– Main Board (Component Side) – ................................ 29
6-7. Printed Wiring Board
– Main Board (Conductor Side) – .................................. 31
6-8. Schematic Diagram – Main Section (1/4) – ................... 33
6-9. Schematic Diagram – Main Section (2/4) – ................... 35
6-10. Schematic Diagram – Main Section (3/4) – ................... 37
6-11. Schematic Diagram – Main Section (4/4) – ................... 39
6-12. Printed Wiring Board – PANEL Section – .................... 41
6-13. Schematic Diagram – PANEL Section – ........................ 43
6-14. Printed Wiring Board
– SUB/INVERTER Section – ......................................... 45
6-15. Schematic Diagram – SUB/INVERTER Section – ........ 46
6-16. IC Pin Function Description ........................................... 50
7. EXPLODED VIEWS
................................................ 54
8. ELECTRICAL PARTS LIST
............................... 57
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.