Section 3 Electrical Adjustments - Sony ICF-F1 Service Manual

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Operating instructions (2 pages)

Limited warranty (1 page)

Table Of Contents

Table of Contents

2-6. DIAL POINTER

Screw

1mm

3 Push the rack deep inside at the position

of 1 mm away from the end surface

of the Chassis as far as it can go.

Chassis

Rack

Two claws

5 Attach the pointer as follows

: While aligning the hole of the

pointer with the projection

of the rack, engage the two

claws of the pointer with

the chassis.

Chassis

1 Install the tuning capacitor gear (A) in the direction

as shown while it is aligned with CV1.

CV1

4 Scale, dial

Rack

2 Rotate the Shaft (tune)

in the direction of the arrow fully.

Shaft (tune)

Pointer

Rack

— 5 —

SECTION 3

ELECTRICAL ADJUSTMENTS

AM SECTION

BAND : AM

Signal generator

AM RF signal

generator

Put the lead-wire

antenna close to

the set.

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

FM SECTION

BAND : FM

Signal generator

FM RF signal

generator

0.01µF

telescopic

antenna

terminal

75kHz (100%) amplitude modulation

by 1kHz signal.

Output level : as low as possible

level meter

16 Ω

set

–

Speaker terminal (SP1)

• Repeat the procedures in each adjustment several times for the

maximum level meter indication.

• The frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

AM IF ADJUSTMENT