Sony XRC-7203-SP Service manual
XR-C7203SP
SERVICE MANUAL
For RM-X2S (Remote Commander),
please refer to RM-X2S/X3S Service
Manual (9-960-039-∏) previously issued.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICA TIONS
East European Model
Model Name Using Similar Mechanism XR-C653SP
T ape Transport Mechanism Type MG-25D-136
MICROFILM
FM/MW/LW CASSETTE CAR STEREO
TABLE OF CONTENTS
1. GENERAL
Location of Controls ....................................................... 3
Installation....................................................................... 5
Connections ..................................................................... 7
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
6. DIAGRAMS
6-1. IC Pin Function Description ........................................... 19
6-2. Printed Wiring Board – MAIN Section –...................... 24
6-3. Schematic Diagram – MAIN Section –.......................... 29
6-4. Printed Wiring Boards – PANEL Section – .................. 33
6-5. Schematic Diagram – PANEL Section –....................... 35
7. EXPLODED VIEWS ................................................ 40
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during 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 damaged by heat.
8. ELECTRICAL PARTS LIST ............................... 43
– 2 –
SECTION 1
GENERAL
This section is extracted from
instruction manual.
– 3 –
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
SECTION 2
)
(
)
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
SUB PANEL ASS’Y
2
two claws
1
two screws
(PTT2.6
×
8)
2
claw
1
two screws
(PTT2.6
MECHANISM DECK (MG-25D-136)
2
connector
(CN201)
×
8)
4
mechanism deck
(MG-25D-136)
3
sub panel ass’y
1
two screws
(2.6
×
6)
1
screw
(PTT2.6
×
8
3
flexible flat cable
CN231
– 9 –
HEAT SINK
d
2
heat sink
1
four screws
(PTT2.6 × 8)
1
four screws
(PTT2.6 × 8)
MAIN BOARD
1
two screws
(PTT2.6 × 8)
1
two ground point screws
1
ground point screw
2
main boar
– 10 –
3
insulator
SECTION 3
2
Move the arm (suction) in the arrow
direction and fit on projection.
1
Fit the arm (suction) on the shaft.
projection
ASSEMBLY OF MECHANISM DECK
Note: Follow the assembly procedure in the numerical order given.
HOUSING
4
Fit claw on B part.
3
Put the housing
under A part.
housing
5
Fit projection on C part.
2
Install the hanger onto
two claws of the housing.
C
part
7
Holder the hanger by bending the claw.
1
Install the catch to the hanger.
hanger
6
Fit projection on D part.
8
Hold the hanger by
bending the claw.
D
part
ARM (SUCTION)
A
part
B
part
– 11 –
LEVER (LDG-A) / (LDG-B)
shaft
A
1
Fit the lever (LDG-A) on
shafts A – C and install it.
shaft
B
shaft
C
3
type-E stop ring 2.0
shaft
A
Fit the lever (LDG-B) on
2
shafts
install it.
A
and B and
shaft
B
GEAR (LDG-FT)
hole
hole
gear (LDG-D)
lever (LDG-A)
gear (LDG-FB)
4
Align hole in the gear (LDG-D)
with hole the lever (LDG-A).
2
tension spring (LD-2)
5
gear (LDG-FT)
1
6
polyethylene washer
2
tension spring (LD-1)
– 12 –
3
Move the lever (LDG-B)
in the arrow direction.
Loading...