Sony ICF-SW77 - FM Tracking Adjustment; FM Stereo Adjustment

ICF-SW77
FM Tracking Adjustment
Set up:
Band Selector: FM
Frequency: 87.5 MHz or 108.000 MHz
VOLUME control: Arbirary
FM RF SSG VTVM
Procedure:
1. RF SSG’s and Set’s Frequency: 87.5 MHz
Adjust T251 and T252 for a maximum output level.
2. RF SSG’s and Set’s Frequency: 108.000 MHz
Adjust CT251, CT252, and CT253 for a maximum output level.
3. Repeat above steps several times ending with trimmers until no
further inprovement is obtained.
FM Stereo Adjustment
Setup:
Band Selector: FM
VOLUME control: Arbitrary
jig for service
10 uF
2.4kQ
0.0 luF
2SKI93-E
IMO
DC5V
frequency
counter
Procedure:
1. Insert the headphones to headphones jack.
2. Connect 10 p, F capacitor as above figure.
3. Tune the set to 98 MHz.
4. Adjust RV401 for 75.9 — 76.1 kHz reading on the frequency counter.
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