Sony XR-1800R User manual

MICROFILM
SERVICE MANUAL
FM/MW/LW CASSETTE CAR STEREO
AEP Model
UK Model
Model Name Using Similar Mechanism XR-1800
Tape Transport Mechanism Type MG-36SZ9-32
SPECIFICATIONS
XR-1800R

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TABLE OF CONTENTS
1. GENERAL
Button Locations ............................................................. 3
Setting the Clock ............................................................. 3
Installation....................................................................... 4
Connections ..................................................................... 5
2. DISASSEMBLY ......................................................... 8
3. MECHANICAL ADJUSTMENTS....................... 12
4. ELECTRICAL ADJUSTMENTS
Tape Deck Section .......................................................... 12
Tuner Section .................................................................. 13
5. DIAGRAMS
5-1. Notes for Printed Wiring Board and
Schematic Diagram ......................................................... 17
5-2. Printed Wiring Board – MAIN Section – ....................... 19
5-3. Schematic Diagram – MAIN Section (1/2) –................. 21
5-4. Schematic Diagram – MAIN Section (2/2) –................. 23
5-5. Printed Wiring Board – PANEL Section – .................... 25
5-6. Schematic Diagram – PANEL Section – ....................... 27
5-7. IC Pin Function Description ........................................... 31
6. EXPLODED VIEWS................................................ 33
7. ELECTRICAL PARTS LIST ............................... 39
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-
aged by heat.

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SECTION 1
GENERAL This section is extracted from
instruction manual.

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Note: Follow the disassembly procedure in the numerical order given.
SECTION 2
DISASSEMBLY
COVER ASS’Y
MECHANISM DECK BLOCK
3 cover ass’y
2
2
1
1
1 two screws
(PTT2.6 × 6)
3 mechanism deck bloc
k
1 two screws
(PTT2.6 × 6)
2 connector
(CN901)

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MAIN BOARD, HEAT SINK
MECHANISM DECK
(MG-36SZ9-32)
1 two screws
(PTT2.6
× 6
)
5 heat sink
2 two screws
(ground point)
3 main board
4 five screws
(PTT2.6
× 8)
1 two screws
(P2.6 × 4)
3 mechanism dec
k
(MG-36SZ9-32)
1 two screws
(P2.6 × 4)
2 bracket (MD)

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MOTOR ASS’Y (CAPSTAN/REEL) (M901)
CASSETTE HANGER (X)
1 two screws
(P2
× 3)
3 motor ass’y (CAPSTAN/REEL
)
(M901)
2 belt
2 belt
1 Remove the claw toward
direction.
2 Remove the return link
toward direction.
5 cassette hanger (x)
3 boss
3 boss
4 two claws
1 Remove the claw toward
direction.