Sony ICF-F12S User manual

SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio Business Group
ICF-F11S/F12S
SPECIFICATIONS
FM/SW/MW 3 BAND RADIO
9-887-911-02
2007L05-1
© 2007.12
E Model
Ver. 1.1 2007.12
Frequency range:
Band ICF-F11S ICF-F12S
FM 87.5-108 MHz 87.5-108 MHz
MW 530-1 605 kHz 530-1 605 kHz
SW 2.3-7.35 MHz 5.9-18 MHz
Speaker
Approx. 9.2 cm (3 5/8inches) dia., 4 Ω
Output
v(earphone) jack (ø3.5mm minijack)
Power output
300 mW (max)
Power requirements
3V DC, two R20 (size D) batteries
Dimensions
Approx. 216 ×129.8 ×68.6 mm (w/h/d)
(8 5/8×5 1/8×2 3/4inches) incl. projecting parts and
controls
Mass
Approx. 676 g (1 lb 8 oz) incl. carrying strap and
batteries
Supplied accessories
carrying strap (1)
Design and specifications are subject to change
without notice.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Photo : ICF-F12S

ICF-F11S/F12S
2
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
HOW TO CHANGED THE CERAMIC FILTERS
This model is used two ceramic filters of CF1 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
Mark Center frequency
red 10.70 MHz
blue 10.67 MHz
orange 10.73 MHz
black 10.64 MHz
white 10.76 MHz
CF3
mark
CF1
A
B
Telescopic antenna
Antena telescópica
FM MW SW
R20 (size D) ×2
R20 (tamaño D) ×2
Insert the Eside of the battery first.
Inserte primero el lado Ede la pila.
Rear
Parte posterior
Installing the
batteries
(See fig. A)
1Open the battery compartment lid.
2Install two R20 (size D) batteries (not
supplied) with correct polarity.
3Close the lid.
Battery life (Approx. hours) (JEITA*)
When using FM SW MW
Sony R20 (size D) 200 220 220
* Measured by JEITA (Japan Electronics and
Information Technology Industries Association)
Standards. The actual battery life may vary
depending on the circumstance of the unit.
When to replace the batteries
When the sound becomes weak or distorted, replace
all the batteries with new ones.
Notes on batteries
• Do not charge the dry batteries.
• Do not carry the dry batteries with coins or other
metallic objects. It can generate heat if the positive
and negative terminals of the batteries are
accidentally contacted by a metallic object.
• Do not use different types of batteries at the same
time.
• When you replace the batteries, replace all with new
ones.
• When you are not going to use the unit for a long
time, remove the batteries to avoid damage from
battery leakage and corrosion.
Improving the
reception
(See fig. B)
FM: Extend the telescopic antenna and adjust the
angle for optimum reception.
MW: Rotate the unit horizontally for optimum
reception. A ferrite bar antenna is built into the
unit.
SW: Extend the telescopic antenna vertically.
Note
Adjust the direction of the
antenna by holding the bottom of
it. The antenna can be damaged
when you move the antenna with
excessive force.
SECTION 2
GENERAL
This section is extracted
from instruction manual.

ICF-F11S/F12S
3
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
3-2. REAR CABINET BLOCK
3-2. REAR CABINET BLOCK
(Page 3)
3-3. MAIN BOARD, GEAR (VC)
(Page 4)
3-5. GEAR (VC) AND MAIN BOARD SETTING
(Page 5)
3-4. TELESCOPIC ANTENNA (ANT1),
BATTERY CASE LID, CABINET (REAR)
(Page 4)
SET
Open the battery case lid.
three claws
antenna cable
terminal board
(antenna)
Remove a
solder.
screw

rear cabinet block
screw

ICF-F11S/F12S
4
3-3. MAIN BOARD, GEAR (VC)
two screws
MAIN board
Remove a solder.
Remove two solders.
gear (VC)
Remove a solder.
3-4. TELESCOPIC ANTENNA (ANT1), BATTERY CASE LID, CABINET (REAR)
terminal board (antenna)
two bosses
cabinet (rear)
telescopic antenna (ANT1)
battery case lid
battery case lid
screw
(M3 ×6)
cushion
(battery)
cabinet (rear)

ICF-F11S/F12S
5
Note: Follow the assembly procedure in the numerical order given.
3-5. GEAR (VC) AND MAIN BOARD SETTING
gear (VC)
knob (tune)
Install the gear (VC)
as shown in figure.
Down the pointer.
pointer
Set the second concave portion
of pointer to the convex part
of the gear (VC).
first concave portion
rib of front cabinet
Match two gears.
Rotate knob (VOL)
in the direction
of the arrow fully.
Rotate the shaft of RV1 in the direction
of the arrow fully.
Rotate the shaft of CV1 in the direction
of the arrow fully.
two screws
MAIN board
The vicinity of hole at center
of gear (VC) and the pointer
must be parallel.
Note: Match the convex part of the gear (VC) to the second concave portion of pointer
with pointer lowered most.

ICF-F11S/F12S
6
SECTION 4
ELECTRICAL ADJUSTMENT
0 dB=0.280 mV
[MW]
Setting:
BAND switch : MW
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
+
–
level meter
set
4Ω
MAIN board
TP (SP –)
MAIN board
TP (SP +)
[SW]
Setting:
BAND switch: SW
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
+
–
level meter
MAIN board
TP (SP –)
MAIN board
TP (SP +)
set
4Ω
10 pF
MAIN board
TP (GND)
MAIN board
TP (ANT)
[FM]
Setting:
BAND switch: FM
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
level meter
MAIN board
TP (SP –)
MAIN board
TP (SP +)
set
4Ω
0.01 μF
MAIN board
TP (GND)
MAIN board
TP (ANT)
• Repeat the procedures in each adjustment several times, and
the tracking adjustments should be finally done by the trimmer
capacitors.
• Remove FM antenna in FM adjustment.
MW/SW IF ADJUSTMENT
Adjustment for a maximum reading on level meter
T1 455 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display
L5 520 kHz
CT1-2 1650 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 600 kHz
CT1-1 1400 kHz
no mark: F11S ( ): F12S
SW FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display
L6 2200 kHz (5800 kHz)
CT3 7600 kHz (18250 kHz)
no mark: F11S ( ): F12S
SW TRACKING ADJUSTMENT
Adjust for maximum reading on level meter
L2 2200 kHz (5800 kHz)
CT2 (18250 kHz)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display
L4 86.5 MHz
CT1-4 109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 86.5 MHz
CT1-3 109.5 MHz
Adjustment Location: MAIN board (See page 7)

ICF-F11S/F12S
7
FM Tracking Adjustment
T1
MW/SW IF Adjustment
L3
CT1-3
– MAIN BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
S1
BAND
SW
S
MW
S
FM
TP (ANT)
TP (GND)
TP (SP+)
TP (SP-)
S2
POWER
OFF
S
ON
FM Frequency Coverage Adjustment L4
CT1-4
SW Tracking Adjustment
SW Frequency Coverage Adjustment L6
CT3
MW Tracking Adjustment L1
CT1-1 MW Frequency Coverage Adjustment
L5
CT1-2
L2
CT2
(F12S)
Adjustment Location:

ICF-F11S/F12S
8
MEMO

ICF-F11S/F12S
ICF-F11S/F12S
99
5-1. PRINTED WIRING BOARD - MAIN Board - • : Uses unleaded solder.
W
1
C6 C7
JC3
C4
CT1-4 CV1-4 CV1-1
CV1-2
CV1-3
CT1-1
CT1-2
L5
MW OSC
CT1-3
C35
JC2
C22 C20
C28
C27
C33
C32
C36 Q1
C29
R5
R1
C24
R4
C21
C1 C2
C12 C13
C8 C9
C10
C11
C14 C15 C16
JC1
C17
C37
D1
A/K A
K
ANT
TP
(ANT)
ANT1
FM/SW
TELESCOPIC
ANTENNA
R2
R3
L11
L2
SW RF
T1
AM IFT L7
J1
L6
SW OSC
CT3
CT2
C26
C30
C34
SP1
C25
C
B
E
RV1
VOLUME
CF2
CF3
JW3
JW4
W3
DRY BATTERY
SIZE "D"
(IEC DESIGNATION R20)
2PCS. 3V
BPF1
BAND PASS FILTER
NATURAL
C31
L8 (F11S)
(F12S)
BLK
RED
JW5
JW2
JW1
C19
L1
MW FERRITE-ROD ANTENNA
C23
L3
FM RF
30
15
31
16
CF1 IC1
+
+
+
+
+
+
+
SP+
BRN
BLK
SP–
W4
L4
FM OSC
CV1
TUNING
S1
BAND
S2
POWER
FM
MW
ON
OFF
SW
TP
(SP+)
TP
(SP-)
TP
(GND)
(F12S)
W2
-1-6
-2-3
-4
-5
(F11S)
A
B
C
D
E
F
G
H
I
J
123456789
1-874-716-
11
(11)
MAIN BOARD
SECTION 5
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
• f: internal component.
• C: panel designation.
• A : B+ Line.
• C : adjustment for repair.
• Power voltages is dc 3V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground in no-signal (de-
funed) conditions.
no mark : FM
( ) : MW/SW
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltages variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F: FM
f: MW
h: SW
THIS NOTE IS COMMON FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X: Parts extracted from the component side.
• W: indicates side identified with part number.
• f: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• IC Block Diagram
– MAIN Board –
IC1 CXA1019S
12 3 45 6 7 8 9 10 1514131211
FM
DISCRIMINATOR
AF POWER AMP AM FE FM IF
TUNING
METER
AM IF DET AGC
FM FE
23 22 21 202425 19 18 17 1629 28 27 2630
GND GND AF OUT VCC RIPPLE FILTER AF IN DET OUT AFCAGC AFCAGC IF GND METER N.C FM IF IN AM IF IN FM/AM BAND SELECT
FM/AM
IF OUT
FE GND
N.C
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND GND

ICF-F11S/F12S
ICF-F11S/F12S
1010
5-2. SCHEMATIC DIAGRAM - MAIN Board - • See page 9 for IC Block Diagram.
SP1
R4
C34
C32C36
C33
C30 C31
C29
C28
C27
C25 C26
R5
R3
C24
R2
JW3
JW4
L7
C37
JW1
C21
L11
JW2
C19
R1
C22 C23 CF1
W2
C18
C13
C8
C9
C10
C11
C14
C15
C7
L8
JW5
CT2
JC2
C2
IC1
ANT1
C1
C4
C6
C12
C16
C17
C35
JC1
CT3
RV1
CF2
CF3
W3
W4
Q1
S2
J1
D1
CT1-1
L2
TP
TP
S1-6
S1-2
S1-3 L3
CV1-3
CV1-4 CT1-4
L4 CV1-2CV1-1
BPF1
CT1-3
S1-1
S1-5
CT1-2
L5
L6
T1
TP
ANT
TP
S1-4
C20
47
470
10V
11
1
22
25V 470 10V
0.047
0.022
1
4.7
50V 10 50V
100k
220
0.01
2.2k
3p
1000p
10
50V
4.7k
0.1 4.7
50V
22p
220p
100p
47p
10p
22p
0
10p
CXA1019S
6p
10p
1p
3p
470p
3p
8p
0
50k
2SC4154
1PS226
(SP-)
(SP+)
(GND)
(ANT)
0.01
GNDGNDOUTVCC
RIPPLE
INOUT
AGC
GND
METER
N.C.
SELECT
AFAFDET
AFC(J)
AFC(W)
AM
BAND
OUT
IF
GNDGND
DISCRI
NFVOLAMAFCFMREGFMAM OSCOSCOUTRFRF
N.C.
F.E
GND
FM/AM
IF
IN IF IN
FM
FM
IN
RF
IF
OUT
DET,AGC,AFAMP
ANTENNA
TELESCOPIC
(F11S)
(F12S)
(F11S)
(F12S)
*C14 1000p
2200p (F11S) (F12S) 2200p (F11S) (F12S)
470p
*C15
(F11S)
(F12S)
1p
10p
*C18
ANTENNA
FERRITE-ROD
MW
VOLUME
FM/SW
FM/MW/SWFRONT END,
FM/MW/SWIF AMP,
SP+
SP-
MWOSC
SWOSC
FMRF
OSC
FM
SW
RF
OFF
ON
POWER
W
SW
MW
FM
BAND
S1
TUNING
CV1
DRYBATTERY
SIZE"D"
(F11S)
(F12S)
(IECDESIGNATIONR20 2PCS.3V)
2PCS.3V
HIGHCUT MUTING
BANDPASSFILTER
AMIFT
1μH
1μH
12μH

11
ICF-F11S/F12S
MAIN board
5
1
3
ANT1
not supplied
not supplied
12
14
13
15
1
2
L1
10
11
16
9
6
7
8
4
SECTION 6
EXPLODED VIEW
1 3-254-143-11 SCREW (B3), (+) BV TAPPING
2 3-272-871-01 CABINET (REAR)
3 X-2189-157-1 CABINET FRONT SUBASSY (including SP1)
(F11S)
3 X-2189-158-1 CABINET FRONT SUBASSY (including SP1)
(F12S)
4 3-272-874-01 KNOB (VOL)
5 3-272-873-01 KNOB (TUNE)
6 3-920-194-11 TERMINAL (–), BATTERY
7 3-374-783-02 WASHER, POLY-SLIDER
8 3-272-878-01 +, BATTERYTERMINAL
9 3-272-875-01 GEAR (VC)
10 3-044-220-01 HOLDER (ANT)
11 3-272-880-01 CUSHION (SW)
12 A-1418-784-A MAIN BOARD, COMPLETE (F11S)
12 A-1418-785-A MAIN BOARD, COMPLETE (F12S)
13 2-580-036-01 CUSHION (BATTERY)
14 3-272-872-01 LID, BATTERY CASE
15 3-918-696-31 SCREW (M3X6 LOCKACE)
16 2-514-259-01 PIN (PVC)
ANT1 1-501-774-31 ANTENNA, TELESCOPIC
L1 1-457-565-11 BARANTENNACOIL(MW)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
Note:
• -XX and -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 ser-
vice.
Some delay should be anticipated when
ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
RR
Parts of Color Cabinet’s Color
• Accessories are given in the last of the
electrical parts list.

12
ICF-F11S/F12S SECTION 7
ELECTRICAL PARTS LIST
A-1418-784-A MAIN BOARD, COMPLETE (F11S)
A-1418-785-A MAIN BOARD, COMPLETE (F12S)
********************
2-514-259-01 PIN (PVC)
3-044-220-01 HOLDER (ANT)
3-272-880-01 CUSHION (SW)
< BAND PASS FILTER >
BPF1 1-236-711-21 FILTER, BAND PASS
< CAPACITOR >
C1 1-162-911-11 CERAMIC CHIP 6PF 0.5PF 50V
C2 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C4 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C6 1-164-428-11 CERAMIC CHIP 1PF 0.25PF 50V
C7 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C8 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C9 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C10 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
C11 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C12 1-162-934-11 CERAMIC CHIP 3PF 0.25PF 50V
C13 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C14 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V(F11S)
C14 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V(F12S)
C15 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V(F12S)
C15 1-164-315-11 CERAMIC CHIP 470PF 5% 50V(F11S)
C16 1-164-315-11 CERAMIC CHIP 470PF 5% 50V(F11S)
C17 1-162-934-11 CERAMIC CHIP 3PF 0.25PF 50V(F12S)
C18 1-162-997-11 CERAMIC CHIP 10PF 0.5PF 50V(F12S)
C18 1-164-428-11 CERAMIC CHIP 1PF 0.25PF 50V(F11S)
C19 1-126-964-11 ELECT 10uF 20% 50V
C20 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C21 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C22 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C23 1-126-963-11 ELECT 4.7uF 20% 50V
C24 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C25 1-126-963-11 ELECT 4.7uF 20% 50V
C26 1-126-964-11 ELECT 10uF 20% 50V
C27 1-115-156-11 CERAMIC CHIP 1uF 10V
C28 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C29 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C30 1-104-662-91 ELECT 22uF 20% 25V
C31 1-126-925-91 ELECT 470uF 20% 10V
C32 1-115-156-11 CERAMIC CHIP 1uF 10V
C33 1-115-156-11 CERAMIC CHIP 1uF 10V
C34 1-126-925-91 ELECT 470uF 20% 10V
C35 1-162-913-11 CERAMIC CHIP 8PF 0.5PF 50V
C36 1-115-156-11 CERAMIC CHIP 1uF 10V
C37 1-162-908-11 CERAMIC CHIP 3PF 0.25PF 50V
< FILTER >
CF1 1-577-324-11 FILTER, CERAMIC
CF2 1-795-157-11 FILTER, CERAMIC
CF3 1-577-324-11 FILTER, CERAMIC
< VARIABLE CAPACITOR/TRIMMER >
CT1 1-141-719-11 CAP, VAR
CT2 1-141-304-21 CAP, CERAMIC TRIMMER (F12S)
CT3 1-141-304-21 CAP, CERAMIC TRIMMER
< VARIABLE CAPACITOR >
CV1 1-141-719-11 CAP, VAR (TUNING)
< DIODE >
D1 8-719-062-51 DIODE 1PS226-115
< IC >
IC1 8-752-037-02 IC CXA1019S
< JACK >
J1 1-563-836-21 JACK (v)
< JUMPER RESISTOR >
JC1 1-216-864-11 SHORT CHIP 0
JC2 1-216-864-11 SHORT CHIP 0
< COIL >
L1 1-457-565-11 BARANTENNACOIL(MW)
L2 1-456-747-11 COIL, SW (ANT) (F12S)
L2 1-457-581-11 HIGH FREQUENCY COIL (F11S)
L3 1-406-546-11 COIL,AIR-CORE
L4 1-409-565-11 COIL,AIR-CORE
L5 1-406-092-31 COIL, OSC (MW)
L6 1-406-093-31 COIL, OSC (SW) (F12S)
L6 1-457-580-11 COIL, OSCILLATOR (F11S)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
MAIN
When indicating parts by reference num-
ber, please include the board name.
Note:
• Due to standardization, replacements in
the parts list may be different from the
parts specified in the diagrams or the com-
ponents used on the set.
• -XX and -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 ser-
vice.
Some delay should be anticipated when
ordering these items.
• CAPACITORS
uF: μF
• COILS
uH: μH
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• SEMICONDUCTORS
In each case, u: μ, for example:
uA. . : μA. . , uPA. . , μPA. . ,
uPB. . : μPB. . , uPC. . , μPC. . ,
uPD. . : μPD. .

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
ICF-F11S/F12S
1313
L7 1-414-142-11 INDUCTOR 1uH
L8 1-410-510-11 INDUCTOR 12uH (F11S)
L11 1-412-979-21 INDUCTOR 1uH
< TRANSISTOR >
Q1 8-729-620-13 TRANSISTOR 2SC4154TP-1EF
< RESISTOR >
R1 1-216-829-11 METALCHIP 4.7K 5% 1/10W
R2 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R3 1-216-813-11 METALCHIP 220 5% 1/10W
R4 1-216-805-11 METALCHIP 47 5% 1/10W
R5 1-216-845-11 METALCHIP 100K 5% 1/10W
< VARIABLE RESISTOR >
RV1 1-227-623-11 RES, VAR, CARBON 50K (VOLUME)
< SWITCH >
S1 1-771-748-11 SWITCH, SLIDE (BAND)
S2 1-771-905-21 SWITCH, SLIDE (POWER)
< TRANSFORMER >
T1 1-404-902-51 TRANSFORMER, IF
************************************************************
MISCELLANEOUS
**************
3 X-2189-157-1 CABINET FRONT SUBASSY (including SP1)
(F11S)
3 X-2189-158-1 CABINET FRONT SUBASSY (including SP1)
(F12S)
ANT1 1-501-774-31 ANTENNA, TELESCOPIC
*************************************************************
ACCESSORIES
************
3-278-927-11 MANUAL, INSTRUCTION (ENGLISH, SPANISH,
PORTUGUESE, SIMPLIFIED CHINESE,ARABIC)
3-923-510-01 BELT (SHOULDER) (Carrying strap)
3-925-458-01 STOPPER, BELT (Buckle for strap)
MAIN

ICF-F11S/F12S
MEMO
14

SERVICE MANUAL
ICF-F11S/F12S
ICF-F11S/F12S
1
ICF-F11S/F12S
9-887-911-81
E Model
Ver. 1.1 2007.12
SUPPLEMENT-1
File this supplement with the service manual.
Subject: Change of MAIN board (Suffix-12)
In this set, MAIN board has been changed in the midway of production.
Printed wiring boards, schematic diagrams and electrical parts list of
new type are described in this supplement-1.
Refer to original service manual for other information.
1. NEW/FORMER DISCRIMINATION
Former : 1-874-716-11
New : 1-874-716-12
– MAIN Board (Component Side) –
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
• f: internal component.
• C: panel designation.
• A : B+ Line.
• C : adjustment for repair.
• Power voltages is dc 3V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground in no-signal (de-
funed) conditions.
no mark : FM
( ) : MW/SW
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltages variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F: FM
f: MW
h: SW
THIS NOTE IS COMMON FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X: Parts extracted from the component side.
•
W: indicates side identified with part number.
• f: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
2. DIAGRAMS

ICF-F11S/F12S
ICF-F11S/F12S
22
2-1. SCHEMATIC DIAGRAM - MAIN Board -
SP1
R4
C34
C32C36
C33
C30 C31
C29
C28
C27
C25 C26
R5
R3
C24
R2
JW3
JW4
L7
C37
JW1
C21
L11
JW2
C19
R1
C22 C23 CF1
W2
C18
C13
C8
C9
C10
C11
C14
C15
C7
L8
JW5
CT2
JC2
C2
IC1
ANT1
C1
C4
C6
C12
C16
C17
C35
JC1
CT3
RV1
CF2
CF3
W3
W4
Q1
S2
J1
D1
CT1-1
L2
TP
TP
S1-6
S1-2
S1-3 L3
CV1-3
CV1-4 CT1-4
L4 CV1-2CV1-1
BPF1
CT1-3
S1-1
S1-5
CT1-2
L5
L6
T1
TP
ANT
TP
S1-4
C20
47
470
10V
11
1
22
25V 470 10V
0.047
0.022
1
4.7
50V 10 50V
100k
220
0.01
2.2k
3p
1000p
10
50V
4.7k
0.1 4.7
50V
22p
220p
100p
47p
10p
22p
0
10p
CXA1019S
6p
10p
1p
3p
470p
3p
8p
0
50k
2SC4154
1PS226
(SP-)
(SP+)
(GND)
(ANT)
0.01
GNDGNDOUTVCC
RIPPLE
INOUT
AGC
GND
METER
N.C.
SELECT
AFAFDET
AFC(J)
AFC(W)
AM
BAND
OUT
IF
GNDGND
DISCRI
NFVOLAMAFCFMREGFMAM OSCOSCOUTRFRF
N.C.
F.E
GND
FM/AM
IF
IN IF IN
FM
FM
IN
RF
IF
OUT
DET,AGC,AFAMP
ANTENNA
TELESCOPIC
(F11S)
(F12S)
(F11S)
(F12S)
*C14 1000p
2200p (F11S) (F12S) 2200p (F11S) (F12S)
470p
*C15
(F11S)
(F12S)
1p
10p
*C18
ANTENNA
FERRITE-ROD
MW
VOLUME
FM/SW
FM/MW/SWFRONT END,
FM/MW/SWIF AMP,
SP+
SP-
MWOSC
SWOSC
FMRF
OSC
FM
SW
RF
OFF
ON
POWER
W
SW
MW
FM
BAND
S1
TUNING
CV1
DRYBATTERY
SIZE"D"
(F11S)
(F12S)
(IECDESIGNATIONR20 2PCS.3V)
2PCS.3V
HIGHCUT MUTING
BANDPASSFILTER
AMIFT
1μH
1μH
12μH

3
ICF-F11S/F12S
2-2. PRINTED WIRING BOARD - MAIN Board - • : Uses unleaded solder.
W
1
C6 C7
JC3
C4
CT1-4 CV1-4 CV1-1
CV1-2
CV1-3
CT1-1
CT1-2
L5
MW OSC
CT1-3
C35
JC2
C22 C20
C28
C27
C33
C32
C36 Q1
C29
R5
R1
C24
R4
C21
C1 C2
C12 C13
C8 C9
C10
C11
C14 C15 C16
JC1
C17
C37
D1
A/K A
K
ANT
TP
(ANT)
ANT1
FM/SW
TELESCOPIC
ANTENNA
R2
R3
L11
L2
SW RF
T1
AM IFT L7
J1
L6
SW OSC
CT3
CT2
C26
C30
C34
SP1
C25
C
B
E
RV1
VOLUME
CF2
CF3
JW3
JW4
W3
DRY BATTERY
SIZE "D"
(IEC DESIGNATION R20)
2PCS. 3V
BPF1
BAND PASS FILTER
NATURAL
C31
L8 (F11S)
(F12S)
BLK
RED
JW5
JW2
JW1
C19
L1
MW FERRITE-RODANTENNA
C23
L3
FM RF
30
15
31
16
CF1 IC1
+
+
+
+
+
+
+
SP+
BRN
BLK
SP–
W4
L4
FM OSC
CV1
TUNING
S1
BAND
S2
POWER
FM
MW
ON
OFF
SW
TP
(SP+)
TP
(SP-)
TP
(GND)
(F12S)
W2
-1-6
-2-3
-4
-5
(F11S)
A
B
C
D
E
F
G
H
I
J
123456789
1-874-716-
12
(12)
MAIN BOARD

4
ICF-F11S/F12S
A-1418-784-A MAIN BOARD, COMPLETE (F11S)
A-1418-785-A MAIN BOARD, COMPLETE (F12S)
********************
2-514-259-01 PIN (PVC)
3-044-220-01 HOLDER (ANT)
3-272-880-01 CUSHION (SW)
< BAND PASS FILTER >
BPF1 1-236-711-21 FILTER, BAND PASS
< CAPACITOR >
C1 1-162-911-11 CERAMIC CHIP 6PF 0.5PF 50V
C2 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C4 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C6 1-164-428-11 CERAMIC CHIP 1PF 0.25PF 50V
C7 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C8 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C9 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C10 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
C11 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C12 1-162-934-11 CERAMIC CHIP 3PF 0.25PF 50V
C13 1-162-945-11 CERAMIC CHIP 22PF 5% 50V
C14 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V(F11S)
C14 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V(F12S)
C15 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V(F12S)
C15 1-164-315-11 CERAMIC CHIP 470PF 5% 50V(F11S)
C16 1-164-315-11 CERAMIC CHIP 470PF 5% 50V(F11S)
C17 1-162-934-11 CERAMIC CHIP 3PF 0.25PF 50V(F12S)
C18 1-162-997-11 CERAMIC CHIP 10PF 0.5PF 50V(F12S)
C18 1-164-428-11 CERAMIC CHIP 1PF 0.25PF 50V(F11S)
C19 1-126-964-11 ELECT 10uF 20% 50V
C20 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C21 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C22 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C23 1-126-963-11 ELECT 4.7uF 20% 50V
C24 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C25 1-126-963-11 ELECT 4.7uF 20% 50V
C26 1-126-964-11 ELECT 10uF 20% 50V
C27 1-115-156-11 CERAMIC CHIP 1uF 10V
C28 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C29 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C30 1-104-662-91 ELECT 22uF 20% 25V
C31 1-126-925-91 ELECT 470uF 20% 10V
C32 1-115-156-11 CERAMIC CHIP 1uF 10V
C33 1-115-156-11 CERAMIC CHIP 1uF 10V
C34 1-126-925-91 ELECT 470uF 20% 10V
C35 1-162-913-11 CERAMIC CHIP 8PF 0.5PF 50V
C36 1-115-156-11 CERAMIC CHIP 1uF 10V
C37 1-162-908-11 CERAMIC CHIP 3PF 0.25PF 50V
< FILTER >
CF1 1-577-324-11 FILTER, CERAMIC
CF2 1-795-157-11 FILTER, CERAMIC
CF3 1-577-324-11 FILTER, CERAMIC
< VARIABLE CAPACITOR/TRIMMER >
CT1 1-141-719-11 CAP, VAR
CT2 1-141-304-21 CAP, CERAMICTRIMMER (F12S)
CT3 1-141-304-21 CAP, CERAMIC TRIMMER
< VARIABLE CAPACITOR >
CV1 1-141-719-11 CAP, VAR (TUNING)
< DIODE >
D1 8-719-062-51 DIODE 1PS226-115
< IC >
IC1 8-752-037-02 IC CXA1019S
< JACK >
J1 1-563-836-21 JACK (v)
< JUMPER RESISTOR >
JC1 1-216-864-11 SHORT CHIP 0
JC2 1-216-864-11 SHORT CHIP 0
< COIL >
L1 1-457-565-11 BARANTENNACOIL(MW)
L2 1-456-747-11 COIL, SW (ANT) (F12S)
L2 1-457-581-11 HIGH FREQUENCY COIL (F11S)
L3 1-406-546-11 COIL,AIR-CORE
L4 1-409-565-11 COIL,AIR-CORE
L5 1-406-092-31 COIL, OSC (MW)
L6 1-406-093-31 COIL, OSC (SW) (F12S)
L6 1-457-580-11 COIL, OSCILLATOR (F11S)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
MAIN
When indicating parts by reference num-
ber, please include the board name.
Note:
• Due to standardization, replacements in
the parts list may be different from the
parts specified in the diagrams or the com-
ponents used on the set.
• -XX and -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 ser-
vice.
Some delay should be anticipated when
ordering these items.
• CAPACITORS
uF: μF
• COILS
uH: μH
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• SEMICONDUCTORS
In each case, u: μ, for example:
uA. . : μA. . , uPA. . , μPA. . ,
uPB. . : μPB. . , uPC. . , μPC. . ,
uPD. . : μPD. .
3. ELECTRICAL PARTS LIST

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
ICF-F11S/F12S
55
L7 1-414-142-11 INDUCTOR 1uH
L8 1-410-510-11 INDUCTOR 12uH (F11S)
L11 1-412-979-21 INDUCTOR 1uH
< TRANSISTOR >
Q1 8-729-620-13 TRANSISTOR 2SC4154TP-1EF
< RESISTOR >
R1 1-216-829-11 METALCHIP 4.7K 5% 1/10W
R2 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R3 1-216-813-11 METALCHIP 220 5% 1/10W
R4 1-216-805-11 METALCHIP 47 5% 1/10W
R5 1-216-845-11 METALCHIP 100K 5% 1/10W
< VARIABLE RESISTOR >
RV1 1-227-623-11 RES, VAR, CARBON 50K (VOLUME)
< SWITCH >
S1 1-771-748-11 SWITCH, SLIDE (BAND)
S2 1-771-905-21 SWITCH, SLIDE (POWER)
< TRANSFORMER >
T1 1-404-902-51 TRANSFORMER, IF
MAIN

ICF-F11S/F12S
REVISION HISTORY
Checking the version allows you to jump to the revised page.
Also, clicking the version at the top of the revised page allows you to jump to the next revised page.
Ver. Date Description of Revision
1.0 2007.11 New
1.1 2007.12 Change of MAIN board (Suffix-12) (SUPPLEMENT-1) (ECN-ECC57576)