XR-CA640X — Sony Car Audio Service Manual (repair manual). Page 2

View Sony XR-CA640X Service Manual online

2
XR-CA640X
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.
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.
TABLE  OF  CONTENTS
1.
GENERAL
Location of Controls .......................................................
3
2.
DISASSEMBLY
2-1. Disassembly Flow ...........................................................
8
2-2. Sub Panel Assy ................................................................
8
2-3. Mechanism Deck (MG-25F-136) ...................................
9
2-4. MAIN Board ...................................................................
9
2-5. Heat Sink (2P) ................................................................. 10
3.
ASSEMBLY  OF  MECHANISM  DECK
3-1. Assembly Flow ................................................................ 11
3-2. Housing ........................................................................... 11
3-3. Arm (Suction) ................................................................. 12
3-4. Lever (LDG-A)/(LDG-B) ............................................... 12
3-5. Gear (LDG-FT) ............................................................... 13
3-6. Guide (C) ......................................................................... 13
3-7. Mounting Position of Capstan/Reel Motor (M901) ....... 14
4.
MECHANICAL  ADJUSTMENTS
....................... 15
5.
ELECTRICAL  ADJUSTMENTS
Tape Deck Section .......................................................... 15
Tuner Section .................................................................. 15
6.
DIAGRAMS
6-1. Block Diagram – TUNER/TAPE Section – ................... 17
6-2. Block Diagram – MAIN Section – ................................. 18
6-3. Block Diagram – DISPLAY/KEY CONTROL/BUS
CONTROL/POWER SUPPLY Section – ....................... 19
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 20
6-5. Printed Wiring Board – MAIN Board – ......................... 21
6-6. Schematic Diagram – MAIN Board (1/3) – ................... 22
6-7. Schematic Diagram – MAIN Board (2/3) – ................... 23
6-8. Schematic Diagram – MAIN Board (3/3) – ................... 24
6-9. Printed Wiring Board – SUB Board – ............................ 25
6-10. Schematic Diagram – SUB Board – ............................... 25
6-11. Printed Wiring Board – KEY Board – ............................ 26
6-12. Schematic Diagram – KEY Board – .............................. 27
6-13. IC Pin Function Description ........................................... 30
7.
EXPLODED  VIEWS
7-1. Chassis Section ............................................................... 33
7-2. Front Panel Section ......................................................... 34
7-3. MAIN Board Section ...................................................... 35
7-4. Mechanism Deck Section (MG-25F-136) ...................... 36
8.
ELECTRICAL  PARTS  LIST
............................... 37
Page of 42
Display

Click on the first or last page to see other XR-CA640X service manuals if exist.