EXR-105, XR-3740 - Sony Car Audio Service Manual (repair manual). Page 2

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TABLE  OF  CONTENTS
1.
GENERAL
Location of Controls ........................................................ 3
Getting started ................................................................. 3
Setting the Clock ............................................................. 4
Adjusting the Sound Characteristics ............................... 4
Muting the Sound ............................................................ 4
Changing the Sound and Beep Tone ................................ 4
Installation ....................................................................... 5
Connections ..................................................................... 6
2.
DISASSEMBLY
.......................................................... 8
3.
ASSEMBLY  OF  MECHANISM  DECK
........... 10
4.
MECHANICAL  ADJUSTMENTS
....................... 13
5.
ELECTRICAL  ADJUSTMENTS
......................... 13
6.
DIAGRAMS
6-1. IC Pin Function Description ............................................ 14
6-2. Printed Wiring Board  – MAIN Section – ....................... 19
6-3. Schematic Diagram  – MAIN Section – .......................... 21
6-4. Printed Wiring Board  – KEY Section – ......................... 25
6-5. Schematic Diagram  – KEY Section – ............................ 27
7.
EXPLODED  VIEWS
................................................ 29
8.
ELECTRICAL  PARTS  LIST
................................ 32
SERVICING  NOTES
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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