Sony ICF-SW07 Service Manual page 31

FM SECTION
FM FREQUENCY COVERAGE Adjustment
BAND : FM
VOLUME control : as required
Connection Points :
TP (VT)
Procedure :
1. Tune the set to 76MHz.
2. Adjust T201 to obtain a 1.6V on the digital voltmeter.
Standard value : 1.55 – 1.65V
3. Tune the set to 108MHz.
4. Make sure that the digital voltmeter reading is below 11V.
Adjustments Location : MAIN board (see page 33)
Digital
Voltmeter
[ MAIN BOARD] (Side A)
– 31 –
FM TRACKING Adjustment
Note : This adjustment should be performed after the remove Rod
Antenna (ANT102).
This adjustment should be performed after the FM FRE-
QUENCY COVERAGE ADJUSTMENT.
BAND : FM
VOLUME control : as required
Connection Points :
TP(ANT)
0.01uF
[ MAIN BOARD]
(Side A)
set
Procedure :
1. Set the frequencies of the FM RF SSG and the frequency dis-
play of the set to 76MHz.
2. Adjust T106 and T107 to obtain a maximum reading on the level
meter.
3. Set the frequencies of the FM RF SSG and the frequency dis-
play of the set to 108MHz.
4. Adjust CT101 and CT102 to obtain a maximum reading on the
level meter.
5. Repeat the above steps several times, and finish the adjustment
with the trimmers CT101 and CT102.
Adjustments Location : MAIN board (see page 33)
FM RF SSG
22.5kHz frequency
deviation by 400Hz signal.
Output level :
as low as possible
level meter
16 Ω
J302(headphone)