Read Sony XR-C4120 Service Manual online
MICROFILM
SERVICE MANUAL
FM/MW/LW CASSETTE CAR STEREO
AEP Model
UK Model
Model Name Using Similar Mechanism
XR-C4100
Tape Transport Mechanism Type
MG-25Y-136
SPECIFICATIONS
XR-C4120
– 2 –
TABLE OF CONTENTS
1.
GENERAL
Location of Controls .......................................................
3
Resetting the Unit ...........................................................
4
Detaching the Front Panel ...............................................
4
Setting the Clock .............................................................
4
Other Functions ...............................................................
4
Installation .......................................................................
5
Connections .....................................................................
6
2.
DISASSEMBLY
.........................................................
9
3.
ASSEMBLY OF MECHANISM DECK
........... 10
4.
MECHANICAL ADJUSTMENTS
....................... 13
5.
ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 13
Tape Deck Section .......................................................... 13
Tuner Section .................................................................. 14
Tape Deck Section .......................................................... 13
Tuner Section .................................................................. 14
6.
DIAGRAMS
6-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 17
6-2. Printed Wiring Board – MAIN Board – ......................... 19
6-3. Schematic Diagram – MAIN Board (1/2) – ................... 21
6-4. Schematic Diagram – MAIN Board (2/2) – ................... 23
6-5. Printed Wiring Board – KEY Board – ........................... 25
6-6. Schematic Diagram – KEY Board – .............................. 27
6-7. IC Pin Function Description ........................................... 31
6-3. Schematic Diagram – MAIN Board (1/2) – ................... 21
6-4. Schematic Diagram – MAIN Board (2/2) – ................... 23
6-5. Printed Wiring Board – KEY Board – ........................... 25
6-6. Schematic Diagram – KEY Board – .............................. 27
6-7. IC Pin Function Description ........................................... 31
7.
EXPLODED VIEWS
................................................ 34
8.
ELECTRICAL PARTS LIST
............................... 37
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-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
– 3 –
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
– 4 –