XR-1790 - Sony Car Audio Service Manual (repair manual). Page 2

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Location of Controls ....................................................... 3
Setting the Clock ............................................................. 3
Installation ....................................................................... 4
Connections ..................................................................... 6

......................................................... 8

....................... 12

Tape Deck Section .......................................................... 12
Tuner Section .................................................................. 13

5-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 16

5-2. Printed Wiring Board  – MAIN Section – ...................... 17
5-3. Schematic Diagram – MAIN Section (1/2) – ................. 19
5-4. Schematic Diagram – MAIN Section (2/2) – ................. 21
5-5. Printed Wiring Board  – PANEL Section – .................... 23
5-6. Schematic Diagram  – PANEL Section – ....................... 23
5-7. IC Pin Function Description ........................................... 26

................................................ 28

............................... 34

• 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.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.