Read Sony XR-1790 (serv.man2) Service Manual online
MICROFILM
SERVICE MANUAL
FM/AM CASSETTE CAR STEREO
Saudi Arabia Model
SPECIFICATIONS
XR-1790
Model Name Using Similar Mechanism
XR-1804
Tape Transport Mechanism Type
MG-36SZ9-32
2
TABLE OF CONTENTS
1.
GENERAL
Location of Controls .......................................................
3
Setting the Clock .............................................................
3
Installation .......................................................................
4
Connections .....................................................................
6
2.
DISASSEMBLY
.........................................................
7
3.
MECHANICAL ADJUSTMENTS
....................... 11
4.
ELECTRICAL ADJUSTMENTS
Tape Deck Section .......................................................... 11
Tuner Section .................................................................. 12
Tuner Section .................................................................. 12
5.
DIAGRAMS
5-1. Notes for Printed Wiring Board and
Schematic Diagram ......................................................... 14
5-2. Printed Wiring Board – MAIN Board – ........................ 15
5-3. Schematic Diagram – MAIN Board (1/2) – ................... 16
5-4. Schematic Diagram – MAIN Board (2/2) – ................... 17
5-5. Printed Wiring Board – CONTROL Board – ................ 18
5-6. Schematic Diagram – CONTROL Board – ................... 18
5-7. IC Pin Function Description ........................................... 20
5-3. Schematic Diagram – MAIN Board (1/2) – ................... 16
5-4. Schematic Diagram – MAIN Board (2/2) – ................... 17
5-5. Printed Wiring Board – CONTROL Board – ................ 18
5-6. Schematic Diagram – CONTROL Board – ................... 18
5-7. IC Pin Function Description ........................................... 20
6.
EXPLODED VIEWS
................................................ 22
7.
ELECTRICAL PARTS LIST
............................... 28
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
