Table Of Contents - Sony XR-4790 Service Manual

TABLE OF CONTENTS

1. GENERAL
Location of Controls (XR-4790) .................................... 3
Location of Controls (XR-4800) .................................... 4
Installation ....................................................................... 5
Connections ..................................................................... 6
2. DISASSEMBLY
......................................................... 8
3. ASSEMBLY OF MECHANISM DECK
4. MECHANICAL ADJUSTMENTS
5. ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 13
Tape Deck Section .......................................................... 13
Tuner Section .................................................................. 14
6. DIAGRAMS
6-1. Printed Wiring Boards -Main Section- .......................... 20
6-2. Schematic Diagram -Main Section- ............................. 23
6-3. Printed Wiring Board -Panel Section- (XR-4790) ....... 28
6-4. Schematic Diagram -Panel Section- (XR-4790) ......... 31
6-5. Printed Wiring Board -Panel Section- (XR-4800) ....... 33
6-6. Schematic Diagram -Panel Section- (XR-4800) ......... 35
6-7. IC Pin Function Description ........................................... 37
7. EXPLODED VIEWS
8. ELECTRICAL PARTS LIST
........... 10
....................... 13
................................................ 40
............................... 44
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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