Electrical Adjustments - Sony ICF-C111 Service Manual

Fm/am clock radio

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ICF-C111

FM SECTION

0 dB = 1 µV

Setting:

BAND switch: FM

VOLUME switch: MIN

FM RF signal

generator

400Hz, 30% FM modulation

frequency deviation ± 22.5kHz

Output level: as low as possible

AM SECTION

Setting:

BAND switch: AM

VOLUME switch: MIN

AM RF signal

generator

400Hz, 30%

AM modulation

Output level: as low as possible

• Connecting Level Meter (FM and AM)

set

speaker terminal

Repeat the procedures in each adjustment several times, and the

frequency coverage and tracking adjustments should be finally done

by the trimmer capacitors.

SECTION 4

ELECTRICAL ADJUSTMENTS

FM lead wire

antenna terminal

0.01 µ F

set

Put the lead-wire

antenna close to

the set.

level meter

(range: 0.5–5 V ac)

16 Ω

FM FREQUENCY COVERAGE ADJUSTMENT