XR-C5300X, XR-C5600X - Sony Car Audio Service Manual (repair manual). Page 2

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6-1. Test Mode ........................................................................ 17

• Tape Deck Section ........................................................ 17
• Tuner Section ................................................................ 17

7-1. Block Diagrams

• TUNER/TAPE/MAIN Section ..................................... 18
• DISPLAY/KEY CONTROL/BUS CONTROL/

POWER SUPPLY Section ........................................... 19

7-2. Printed Wiring Board – MAIN Board – ......................... 21
7-3. Schematic Diagram – MAIN Board (1/2) – ................... 22
7-4. Schematic Diagram – MAIN Board (2/2) – ................... 23
7-5. Printed Wiring Boards  – KEY/SUB Boards – .............. 24
7-6. Schematic Diagrams – KEY/SUB Boards – .................. 25
7-7. IC Block Diagrams ......................................................... 26
7-8. IC Pin Function ............................................................... 27

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• 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.

Please press on the sub board from above when checking it.
This assures that the connector does not lose contact.