XR-3750, XR-3758, XR-3759, XR-7750, XR-C350, XRS-888 - Sony Car Audio Service Manual (repair manual). Page 2

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Location of Controls (XR-3750) ..................................... 3
Location of Controls (XR-C350) ..................................... 4
Installation ....................................................................... 5
Connections ..................................................................... 6

.......................................................... 10

........... 12

....................... 18

Test Mode ........................................................................ 18
Tape Deck Section ........................................................... 19
Tuner Section ................................................................... 19

6-1.

IC Pin Function Description ............................................ 22

6-2.

Printed Wiring Boards –Main Section– ........................... 24

6-3.

Schematic Diagram  –Main Section– .............................. 27

6-4.

Printed Wiring Board  –Key Section– ............................. 32

6-5.

Schematic Diagram  –Key Section– ................................ 34

................................................ 39

................................ 43

•

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.