Sony XR-4900 Service Manual ▷ View online
E Model
Model Name Using Similar Mechanism
XR-C5100
Tape Transport Mechanism Type
MG-25F-136
SPECIFICATIONS
XR-4900
FM/MW/SW CASSETTE CAR STEREO
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SERVICE MANUAL
Ver 1.1 2002.01
9-926-444-12
Sony Corporation
2002A0500-1
e Vehicle Company
C
2002.1
Published by Sony Engineering Corporation
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TABLE OF CONTENTS
1.
GENERAL
Location of Controls .......................................................
3
Resetting the Unit ...........................................................
4
Detaching the Front Panel ...............................................
4
Setting the Clock .............................................................
4
Installation .......................................................................
5
Connections .....................................................................
6
2.
DISASSEMBLY
.........................................................
9
3.
ASSEMBLY OF MECHANISM DECK
............ 11
4.
MECHANICAL ADJUSTMENTS
....................... 14
5.
ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 14
Tape Deck Section .......................................................... 14
Tuner Section .................................................................. 15
Tape Deck Section .......................................................... 14
Tuner Section .................................................................. 15
6.
DIAGRAMS
................................................................. 18
6-1. Printed Wiring Board –MAIN Section– ........................ 19
6-2. Schematic Diagram –MAIN (1/2) Section– .................. 21
6-3. Schematic Diagram –MAIN (2/2) Section– .................. 23
6-4. Printed Wiring Board –PANEL Section– ...................... 25
6-5. Schematic Diagram –PANEL Section– ......................... 27
6-6. IC Pin Function Description ........................................... 31
6-2. Schematic Diagram –MAIN (1/2) Section– .................. 21
6-3. Schematic Diagram –MAIN (2/2) Section– .................. 23
6-4. Printed Wiring Board –PANEL Section– ...................... 25
6-5. Schematic Diagram –PANEL Section– ......................... 27
6-6. IC Pin Function Description ........................................... 31
7.
EXPLODED VIEWS
................................................ 33
8.
ELECTRICAL PARTS LIST
............................... 36
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.
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SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
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