Read Sony XR-C7220R Service Manual online
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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 ..........................................
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
........... 14
4.
MECHANICAL ADJUSTMENTS
....................... 17
5.
ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 18
Tape Deck Section .......................................................... 18
Tuner Section .................................................................. 19
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
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
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
6-16. IC Pin Function Description ........................................... 54
7.
EXPLODED VIEWS
................................................ 58
8.
ELECTRICAL PARTS LIST
............................... 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-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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