Sony XR-3100R, Service Manual

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TABLE OF CONTENTS
1. GENERAL
Location of controls ........................................................ 3
Resetteing the unit ........................................................... 4
Detaching the front panel ................................................ 4
Setting the clock .............................................................. 4
Installation ....................................................................... 5
Connections ..................................................................... 6
2. DISASSEMBLY
......................................................... 10
3. ASSEMBLY OF MECHANISM DECK
........... 11
4. MECHANICAL ADJUSTMENTS
....................... 14
5. ELECTRICAL ADJUSTMENTS
......................... 14
6. DIAGRAMS
6-1. Block Diagram – TUNER Section – .............................. 18
6-2. Block Diagram – TAPE/MAIN Section – ...................... 19
6-3. Block Diagram – DISPLAY/KEY CONTROL/
BUS CONTROL/POWER SUPPLY Section – .............. 20
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 21
6-5. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 22
6-6. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 23
6-7. Schematic Diagram – MAIN Board (1/3) – ................... 24
6-8. Schematic Diagram – MAIN Board (2/3) – ................... 25
6-9. Schematic Diagram – MAIN Board (3/3) – ................... 26
6-10. Printed Wiring Board – KEY Board – ........................... 30
6-11. Schematic Diagram – KEY Board – ............................. 31
6-12. IC Pin Function Description ........................................... 32
7. EXPLODED VIEWS
................................................ 35
8. ELECTRICAL PARTS LIST
............................... 38
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.