Sony ICF-SW1 - Section 3 Disassembly

SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
REAR CABINET
@ screw @ P2x 16
@ screw ) 2x 18
volume knob
@ screw 4) B2x6
¥
o
Note:
Pull the volume control
knob vertically.
rear cabinet
* Release the claws inside with pushing the
side of CABINET.
CHASSIS
. chassis
epee,”
Note: When installing, put the positions of
power switch and LIGHT switch together.
SECTION 4
ELECTRICAL ADJUSTMENTS
®@ Parts location diagram relevant
to the adjustment
T3 7401 T4
Ist IF FM Tracking Ist IF
Adjustment Adjustment Adjustment
T5 T202 RV401
2nd IF 2nd Local FM Stereo -
Adjustment Adjustment Adjustment
T7201 CT402 T7403
Ist Local FM Tracking FM VCO
Adjustment Adjustment Adjustment
@ AM SECTION
Ist LOCAL ADJUSTMENT
Setup:
VOLUME control: as required
= ‘a (MAIN BOARD]
ALA (SIDE B)
ad. 0420
VTVM
(DC range)
Procedure:
. Tune the set to AM 150 kHz.
1
2. Adjust T201 to obtain a 2.59 — 2.61 V on the VIVM.
3. Tune the set to AM 29.995 MHz.
4
. Confirm that the voltage reading on the VTVM is less than 12 V.
[MAIN BOARD]
(SIDE A)
RV201
3k Hz Step
Adjustment
ARV202
5kHz Step
Adjustment
T402 CT401
FM Tracking FM Tracking
Adjustment Adjustment i
2nd LOCAL ADJUSTMENT/3 kHz STEP/5 kHz
STEP ADJUSTMENT
Setup:
VOLUME control: as required
DCSV
frequency
counter
(MAIN
BOARD]
(SIDE A)
Procedure:
@® 2nd LOCAL ADJUSTMENT
1. Tune the set to AM 153 kHz.
2. Adjust T202 to obtain a 55.3899 — 55.3901 MHz on the fre-
quency counter.
@ 3kHz STEP ADJUSTMENT
3. Tune the set to AM 156 kHz.
4, Adjust RV201 to obtain a 55.3849 —55.3851 MHz on the fre-
quency counter.
@® 5 kHz STEP ADJUSTMENT
5. Tune the set to AM 1,620 kHz.
6. Adjust RV202 to obtain a 55.850 MHz on the frequency
counter.