Sony ICF-F11S / ICF-F12S Service Manual ▷ View online
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.
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.
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 ADJUSTMENTS
0 dB=0.280 µV
[MW]
Setting:
BAND switch : 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
4
Ω
MAIN board
TP (SP –)
MAIN board
TP (SP +)
[SW]
Setting:
BAND switch: 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
4
Ω
10 pF
MAIN board
TP (GND)
MAIN board
TP (ANT)
[FM]
Setting:
BAND switch: 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
4
Ω
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 fi nally done by the trimmer
capacitors.
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
1,650 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
600 kHz
CT1-1
1,400 kHz
no mark: F11S
( ): F12S
SW FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
L6
2,200 kHz (5,800 kHz)
CT3
7,600 kHz (18,250 kHz)
no mark: F11S
( ): F12S
SW TRACKING ADJUSTMENT
Adjust for maximum reading on level meter
L2
2,200 kHz (5,800 kHz)
(CT2)
(18,250 kHz)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
L4
86.5 MHz
CT1-4
109.5 MHz
no mark: F11S/F12S: E model
[ ]: F12S: Saudi Arabia model
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 [L9 and L10]
86.5 MHz
CT1-3
109.5 MHz
Adjustment Location: MAIN board (See pages 7 and 8)
Ver. 1.2
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 (F11S/F12S: E model):
Ver. 1.2
ICF-F11S/F12S
8
FM Tracking Adjustment
T1
MW/SW IF Adjustment
L10
L9
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
Adjustment Location (F12S: Saudi Arabia model):
Ver. 1.2
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