XR-4750RDS, XR-C450RDS - Sony Car Audio Service Manual (repair manual). Page 2

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TABLE  OF  CONTENTS
1.
GENERAL
Location of Controls ..........................................................
3
Setting the Clock ...............................................................
4
Using the Rotary Remote ..................................................
4
Adjusting the Sound Characteristics .................................
5
Muting the Sound ..............................................................
5
Changing the Sound and Beep Tone ..................................
5
Installation .........................................................................
6
Connections .......................................................................
7
2.
DISASSEMBLY
............................................................ 10
3.
ASSEMBLY  OF  MECHANISM  DECK
............. 12
4.
MECHANICAL  ADJUSTMENTS
......................... 15
5.
ELECTRICAL  ADJUSTMENTS
Test Mode .......................................................................... 15
Tape Deck Section ............................................................. 15
Tuner Section ..................................................................... 16
6.
DIAGRAMS
6-1. Printed Wiring Boards  – Main Section – .......................... 22
6-2. Schematic Diagram – Main Section – ............................... 25
6-3. Printed Wiring Board  – Display Section – ....................... 30
6-4. Schematic Diagram  – Display Section – .......................... 32
6-5. IC Pin Function Description .............................................. 35
7.
EXPLODED  VIEWS
.................................................. 37
8.
ELECTRICAL  PARTS  LIST
.................................. 40
SERVICING  NOTES
Flexible Circuit Board Repairing
Keep the temperature of the soldering iron around 270 ˚ C during
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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