Sony Icf-f1 User manual

ICF-F1

AEP Model

SERVICE MANUAL

FM/AM RADIO

SPECIFICATIONS

Frequency range:

FM : 87.5 - 108 MHz

AM : 526.5 - 1 606.5 kHz

Speaker

Approx. 10.0 cm (4 inches) dia., 8 Ω

Output

v(earphone) jack (ø 3.5 mm minijack)

Power output

250 mW (at 10 % harmonic distortion)

Power requirements

4.5V DC, three R14 (size C) batteries

DC IN 4.5V jack accepts: Sony AC-E45HG AC

power adaptor (not supplied)

Dimensions

Approx. 130 ×237 ×71.5 mm (w/h/d)

(5 1/8×9 3/8×2 7/8inches) incl. projecting parts

and controls

Mass

Approx. 673.5 g (1 lb 8 oz) incl. batteries

Design and specifications are subject to change without notice.

Ver 1.0 2000. 05

— 2 —

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.

Flexible Circuit Board Repairing

• Keep the temperature of 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.

SECTION 1

GENERAL This section is extracted

from instruction manual.

—3 —

SECTION 2

DISASSEMBLY

Note : Disassemble the unit in the order as shown below.

Cabinet (rear) assySet Chassis assy Speaker (SP1)

Vol board Main board

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (REAR) ASSY

4Four screws (+BTP 3 ×12)

3Two screws (+BTP 3 ×12)

1Push the knob (Battery box).

2Box, batter

Cabinet (rear) assy

Two screws

(+P 2.6

Remove

solderings

Chassis assy

Knob (vol)

Knob

(tune)

O ring

(DIA 12.5)

O ring (vol)

E ring

Spring,

ring

3Speaker (10 cm)(SP1)

Claw

Two claws

1Spring, SP detent

2-2. CHASSIS ASSY 2-3. SPEAKER (SP1)

—4 —

2-4. VOL BOARD

7Screw

(+P2.6 ×8)

Two claws

4Pointer

5Scale, dial

6Rack

3Vol board

8Gear (A), tuning capacitor

2Remove solderings

2-5. MAIN BOARD ASSY

1Remove solderings

7Remove solderings

5Main board

8LED board

2Jack board

4Two screws (+P 2.6 ×8)

6Screw (+P 2.6 ×8)

3Three screws (+BTP 3 ×12

)

SECTION 3

ELECTRICAL ADJUSTMENTS

2-6. DIAL POINTER

—5 ——6 —

Screw

CV1

1mm

Chassis

4Scale, dial

Rack

Shaft (tune)

2Rotate the Shaft (tune)

in the direction of the arrow fully.

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

as shown while it is aligned with CV1.

Rack

Pointer

Two claws

3Push the rack deep inside at the position

of 1 mm away from the end surface

of the Chassis as far as it can go.

5Attach 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.

BAND : AM

Signal generator

•Repeat the procedures in each adjustment several times for the

maximum level meter indication.

•Thefrequencycoverage and tracking adjustmentsshould be finally

done by the trimmer capacitors.

AM SECTION

FM SECTION

[Adjustment Location : Main board] (Component side)

Put the lead-wire

antenna close to

the set.

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

AM RF signal

generator

0.01µF

FM RF signal

generator

telescopi

antenna

terminal

75kHz (100%) amplitude modulation

by 1kHz signal.

Output level : as low as possible

16 Ω

set +

–

level mete

Speaker terminal (SP1)

AM IF ADJUSTMENT