Sony ICFF-1 Service manual

ICF-F1

SERVICE MANUAL

Ver 1.0 2000. 05

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)

1

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

(5
and controls

Mass

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

AEP Model

Design and specifications are subject to change without notice.

FM/AM RADIO

SECTION 1

GENERAL

This section is extracted
from instruction manual.

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.

— 2 —

SECTION 2

y

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

4 Four screws (+BTP 3 × 12)

5

Cabinet (rear) assy

1 Push the knob (Battery box).

3 Two screws (+BTP 3 × 12)

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

Claw

1

Knob

(tune)

5

Knob (vol)

2 Box, batter

2

O ring

(DIA 12.5)

3

Spring,

ring

9

6

O ring (vol)

8

(+P 2.6

4

E ring

Chassis assy

7

Remove

solderings

T wo screws

×

8)

— 3 —

Two claws

3 Speaker (10 cm)(SP1)

2

1 Spring, SP detent

2-4. VOL BOARD

)

6 Rack

5 Scale, dial

7 Screw

(+P2.6 × 8)

2 Remove solderings

1

4 Pointer

8 Gear (A), tuning capacitor

3 Vol board

Two claws

2-5. MAIN BOARD ASSY

7 Remove solderings

1 Remove solderings

2 Jack board

8 LED board

6 Screw (+P 2.6 × 8)

3 Three screws (+BTP 3 × 12

4 Two screws (+P 2.6 × 8)

5 Main board

— 4 —

SECTION 3

c

r

ELECTRICAL ADJUSTMENTS

2-6. DIAL POINTER

3 Push the rack deep inside at the position

Chassis

Screw

1mm

of 1 mm away from the end surface
of the Chassis as far as it can go.

Rack

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

AM SECTION

BAND : AM
Signal generator

AM RF signal
generator

30% amplitude modulation by 400Hz
signal.
Output level : as low as possible

FM SECTION

BAND : FM
Signal generator

FM RF signal
generator

75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible

set

Put the lead-wire
antenna close to
the set.

0.01µF

16 Ω

Speaker terminal (SP1)

telescopi
antenna
terminal

level mete

+
–

• Repeat the procedures in each adjustment several times for the
maximum level meter indication.

• The frequency coverage and tracking adjustments should be f inally
done by the trimmer capacitors.

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1 455 kHz

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 600 kHz

CT1-1 1,400 kHz

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L5 516.5 kHz

CT1-4 1,631.5 kHz

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 87.35 MHz

CT1-2 108.25 MHz

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

CT1-3 108.25 MHz

[Adjustment Location : Main boar d] (Component side)

CT1-3
FM
FREQUENCY
COVERAGE
adjustment

L5
AM
FREQUENCY
COVERAGE
adjustment

CT1-1
AM TRACKING
adjustment

L1 AM TRACKING adjustment

T1
AM IF
adjustmnet

FM

L3

TRACKING

CT1-2

adjustment

CT1-4
AM
FREQUENCY
COVERAGE
adjustment

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

Rack

— 5 —

— 6 —

ICF-F1

4-1. PRINTED WIRING BOARDS

SECTION 4

DIAGRAMS

12

A

DRY

BATTERY SIZE ''C''

(ICE DESIGNATION R14)

2PCS, 4.5V

B

ANT1

FM TELESCOPIC

ANTENNA

C

MAIN BOARD

A
B
C

C30
C31

D1

D2

R9

G

F

C32

CF2

T1

R5

345678910

E

D

F

G

R8

BPF1

C11

CF4

CF3

L3

16

15

R7

C17

C16

L6

IC1

C19

C5

C18

R17

C20

C12

C21

R15

C26

R3

C13

C24

30

C25

C28

C27

C22

CF1

1

C14

S1

(BAND)

AM
FM

E

Q1

J2

DC IN 4.5V

JACK BOARD

LED BOARD

D3 (LIGHT)

C34

1-678-315

SP1

(SPEAKER)

11

(11)

R11

J1

D

E

F

G

16

3

C33

6

7

C29

R10

R14

R16

Q2

E

C9

5

CT1-2 CT1-3
CV1-2 CV1-3

CV1-4
CT1-4 CT1-1

CV1-1

AM FERRITE

ROD ANTENNA

L1

CV1

TUNING

C4

L5

1-678-312

11

(11)

VOL BOARD

RV1

POWER/VOLUME

R4

1-678-314

B

A

D4

(POWER)

7

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• b : Pattern from the side which enables seeing.

E

D

C

S2
LIGHT

1

2

3

4

5

6

D5

(POWER)

1-678-313

1

2

4

11

(11)

11

(11)

— 7 —

— 8 —

4-2. SCHEMATIC DIAGRAM

ICF-F1

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

f

C6

33p

•

• C : panel designation.

: internal component.

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

• U : B+ Line.

• H : adjustment for repair.

• Voltages are dc with respect to ground under no-signal

(detuned) conditions.
no mark : FM
( ) : AM

• V oltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Signal path.

F : FM
f : AM

4

W or less unless otherwise

• IC BLOCK DIAGRAM

IC1 CXA1019S

GND

GND

AF OUT

VCC

RIPPLE

FILTER

AF IN

DET OUT

AFC AGC

AFC AGC

FM FE

FM OSC

REG OUT

IF GND

TUNING

FM RF

23 22 21 202425 19 18 17 1629 28 27 2630

AM IF DET AGC

AF POWER AMP AM FE FM IF

FM

DISCRIMINATOR

2 345 6 7 8 9 10 1514131211

1

GND

GND

NF

FM DISCRI

VOL

AFC

AM OSC

METER

METER

AM RF IN

N.C

N.C

FM IF IN

AM IF IN

FE GND

FM RF IN

FM/AM BAND

SELECT

IF OUT

FM/AM

— 9 —

— 10 —

SECTION 5

S

EXPLODED VIEWS

SECTION 6

ELECTRICAL PARTS LIST

LED JACK MAIN

NOTE:

• -XX, -X mean standardized parts, so they may
have some differences from the original one.

• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.

14

15

13

#1

12

11

18

19

4

39

38

5

8

6

• The mechanical parts with no reference number
in the exploded views are not supplied.

• Accessories and packing materials are given in
the last of this parts list.

16

40

#2

17

#1

#2

37

21

22

#2

20

23

25

not supplied

9

24

24

#2

29

30

#1

#1

32

36

34

31

33

35

#1

NOTE:

• Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.

• -XX, -X mean standardized parts, so they
may have some difference from the original
one.

• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

1-678-315-11 LED BOARD

**********

< DIODE >

D3 8-719-945-66 LED SLP190B-51 (LIGHT)

**************************************************************

1-678-314-11 JACK BOARD

***********

< CAPACITOR >

C34 1-162-974-11 CERAMIC CHIP 0.01uF 50V

< JACK >

J1 1-563-836-21 JACK (EARPHONE)
J2 1-580-681-21 JACK,DC(POLARITY UNIFIED TYPE)

< RESISTOR >

• CAPACITORS:
uF: µF

• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable

• COILS
uH: µH

C24 1-104-664-11 ELECT 47uF 20.00% 10V
C25 1-126-925-11 ELECT 470uF 20.00% 10V
C26 1-115-156-11 CERAMIC CHIP 1uF 10V
C27 1-115-156-11 CERAMIC CHIP 1uF 10V
C28 1-126-925-11 ELECT 470uF 20.00% 10V

C29 1-126-924-11 ELECT 330uF 20.00% 10V
C30 1-164-505-11 CERAMIC CHIP 2.2uF 16V
C31 1-115-156-11 CERAMIC CHIP 1uF 10V
C32 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C33 1-162-971-11 CERAMIC CHIP 0.001uF 10.00% 50V

CF1 1-577-600-81 FILTER, CERAMIC
CF2 1-781-790-11 FILTER, AM CERAMIC
CF3 1-577-600-81 FILTER, CERAMIC
CF4 1-577-600-81 FILTER, CERAMIC

(DC IN 4.5V)

CV1 1-151-631-11 CAP, VARIABLE (TUNING)

• SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...

When indicating parts by reference number,
please include the board name.

< FILTER >

< VARIABLE CAPACITOR >

3

26

28

27

SP1

10

2

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

1 3-047-555-11 KNOB(BAND)
2 X-3379-294-1 CABINET (FRONT) ASSY
3 3-047-572-01 COVER, JACK
4 3-047-554-01 KNOB(VOL)
5 3-047-553-01 KNOB(TUNE)

6 3-047-594-01 RING (VOL)
8 3-931-749-01 SPRING, RING
9 3-047-563-01 ADAPTOR (BAND)
10 3-047-580-01 SPRING, SP DETENT
11 3-047-550-11 SCALE, DIAL

12 1-678-314-11 JACK BOARD
13 1-678-315-11 LED BOARD

* 14 1-678-313-11 VOL BOARD

15 3-047-560-01 SHAFT (TUNE)

* 16 A-3683-206-A MAIN BOARD, COMPLETE

17 3-047-561-01 GEAR, MIDWAY
18 3-047-564-01 CHASSIS
19 3-047-557-01 POINTER
20 3-047-559-01 RACK
21 3-047-573-01 ANTENNA COVER

1

23 3-047-575-01 TERMINAL (+), BATTERY
24 3-047-584-01 SHEET (BATTERY BOX)
25 3-047-576-01 TERMINAL (-), BATTERY
26 3-047-577-01 TERMINAL (+.-) (B), BATTERY
27 3-047-578-01 TERMINAL (+.-) (A), BATTERY

28 3-047-548-01 BOX,BATTERY
29 3-047-547-11 CABINET (REAR)
30 3-047-579-01 SPRING (STAND), LEAF
31 3-047-569-01 HANDLE
32 3-047-581-01 SPRING (HANDLE)

33 3-047-567-11 COVER, HANDLE
34 3-047-556-11 KNOB(BATTERY BOX)
35 3-047-568-01 STAND
36 7-671-155-01 STEEL BALL 3.0
37 7-623-508-01 LUG,3

38 3-907-109-01 ORING (DIA 12.5)
39 3-917-351-01 RING(VOL), O
40 3-047-562-01 GEAR(A), TUNING CAPACITOR
SP1 1-529-754-11 SPEAKER (10cm)
#1 7-685-548-14 SCREW +BTP3X12 TYPE2 N-S

R11 1-216-805-11 METAL CHIP 47 5% 1/16W

**************************************************************

* A-3683-206-A MAIN BOARD, COMPLETE

*********************

3-047-566-01 HOLDER (BANT)

< ANTENNA >

ANT1 1-411-779-11 COIL, IFT (LB-1035)

< FILTER >

BPF1 1-236-022-11 FILTER, BAND PASS

< CAPACITOR >

C4 1-162-910-11 CERAMIC CHIP 5PF 0.25PF 50V
C5 1-162-920-11 CERAMIC CHIP 27PF 5% 50V
C6 1-164-258-11 CERAMIC CHIP 33PF
C9 1-162-937-11 CERAMIC CHIP 6PF 0.5PF 50V
C11 1-104-664-11 ELECT 47uF 20.00% 10V

C12 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C13 1-162-974-11 CERAMIC CHIP 0.01uF 50V
C14 1-126-963-11 ELECT 4.7uF 20.00% 50V
C16 1-162-974-11 CERAMIC CHIP 0.01uF 50V
C17 1-126-963-11 ELECT 4.7uF 20.00% 50V

C18 1-126-963-11 ELECT 4.7uF 20.00% 50V
C19 1-126-964-11 ELECT 10uF 20.00% 50V
C20 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C21 1-115-156-11 CERAMIC CHIP 1uF 10V
C22 1-164-373-11 CERAMIC CHIP 0.033uF 25V

< TRIMMER >

CT1 1-151-631-11 CAP, VARIABLE

< DIODE >

D1 8-719-991-33 DIODE 1SS133T-77
D2 8-719-991-33 DIODE 1SS133T-77

< IC >

IC1 8-752-055-05 IC CXA1019S

< COIL >

L1 1-754-145-11 ANTENNA, FERRITE-ROD (MW)
L3 1-419-634-11 COIL, AIR-CORE
L5 1-406-028-00 COIL, OSC (MW)
L6 1-419-635-11 COIL, AIR-CORE

< TRANSISTOR >

Q1 8-729-027-53 TRANSISTOR DTC124TKA-T146
Q2 8-729-026-48 TRANSISTOR 2SA1037AK-T146-Q

< RESISTOR >

R3 1-216-827-11 METAL CHIP 3.3K 5% 1/16W
R5 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R7 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R8 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R9 1-216-811-11 METAL CHIP 150 5% 1/16W

22 1-501-222-81 ANTENNA, TELESCOPIC (FM)

— 11 — — 12 —

#2 7-685-134-01 SCREW +P2.6X8 TYPE1

MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

R10 1-216-853-11 METAL CHIP 470K 5% 1/16W
R14 1-216-833-11 RES-CHIP 10K 5% 1/16W
R15 1-216-801-11 METAL CHIP 22 5% 1/16W
R16 1-216-821-11 METAL CHIP 1K 5% 1/16W
R17 1-216-821-11 METAL CHIP 1K 5% 1/16W

< SWITCH >

S1 1-554-123-00 SWITCH, SLIDE (AM/FM)

22 1-501-222-81 ANTENNA, TELESCOPIC (FM)
SP1 1-529-754-11 SPEAKER (10CM)

**************************************************************

MISCELLANEOUS

**************

ACCESSORIES & PACKING MATERIALS

********************************

< TRANSFORMER >

T1 1-435-399-11 TRANSFORMER, IF

**************************************************************

* 1-678-313-11 VOL BOARD

**********

< DIODE >

D4 8-719-076-36 LED TLGE160 (POWER)
D5 8-719-076-36 LED TLGE160 (POWER)

< RESISTOR >

R4 1-216-831-11 METAL CHIP 6.8K 5% 1/16W

< VARIABLE RESISTOR >

RV1 1-223-486-11 RES,VAR,CARBON(WITH SWITCH)50K

(POWER/VOLUME)

< SWITCH >

S2 1-692-539-11 SWITCH, KEYBOARD (LIGHT)

**************************************************************

3-048-384-11 MANUAL, INSTRUCTION

(EMGLISH/FRENCH/GERMAN/SPANISH/DUTCH/

SWEDISH/ITALIAN/PORTUGUESS/FINNISH)

— 13 —

ICF-F1

9-927-925-31

Sony Corporation

Audio Entertainment Group

— 14 —

Printed in Japan © 2000.5

2000E1636-1

Published by PE General Engineering Dept.