Read Sony ICF-F1 (serv.man2) Service Manual online
SECTION 3
ELECTRICAL ADJUSTMENTS
2-6. DIAL POINTER
— 5 —
— 6 —
Screw
CV1
1mm
Chassis
Chassis
4
Scale, dial
Rack
Shaft (tune)
2
Rotate the Shaft (tune)
in the direction of the arrow fully.
1
Install the tuning capacitor gear (A) in the direction
as shown while it is aligned with CV1.
Rack
Rack
Pointer
Two claws
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.
of the Chassis as far as it can go.
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.
of the rack, engage the two
claws of the pointer with
the chassis.
BAND : AM
Signal generator
Signal generator
• 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 SECTION
FM SECTION
[Adjustment Location : Main board] (Component side)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
AM RF signal
generator
generator
0.01
µ
F
FM RF signal
generator
generator
telescopic
antenna
terminal
antenna
terminal
75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible
by 1kHz signal.
Output level : as low as possible
16
Ω
set
+
–
level meter
Speaker terminal (SP1)
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
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
87.35 MHz
CT1-2
108.25 MHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
516.5 kHz
CT1-4
1,631.5 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
CT1-3
108.25 MHz
BAND : FM
Signal generator
Signal generator
L3
CT1-2
CT1-2
FM
TRACKING
adjustment
TRACKING
adjustment
T1
AM IF
adjustmnet
AM IF
adjustmnet
CT1-4
AM
FREQUENCY
COVERAGE
adjustment
AM
FREQUENCY
COVERAGE
adjustment
CT1-3
FM
FREQUENCY
COVERAGE
adjustment
FM
FREQUENCY
COVERAGE
adjustment
L5
AM
FREQUENCY
COVERAGE
adjustment
AM
FREQUENCY
COVERAGE
adjustment
CT1-1
AM TRACKING
adjustment
AM TRACKING
adjustment
L1 AM TRACKING adjustment
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