Read Sony CFD-D505 / CFS-E14L Service Manual online
– 7 –
FM VCO Adjustment
Procedure:
1. Connect frequency counter to the positions shown below.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz ± 500 Hz reading on the frequency
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz ± 500 Hz reading on the frequency
counter.
FM RF SSG
0.01
µ
F
Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.1 V(100 dB)
Modulation: no modulation
Output level: 0.1 V(100 dB)
to ANT IN terminal
+
–
–
1
µ
F
33 k
Ω
frequency counter
+
IC1 Pin
4
IC1 Pin
7
• Adjustment Parts Location
[TUNER BOARD] (Component Side)
L10: LW TRACKING
L3
CT3
MW TRACKING
CT2
L2
FM FRQUENCY
COVERAGE
COVERAGE
CT1
L1
FM TRACKING
T1: AM IF
L4: LW FREQUENCY
COVERAGE
L5: SW TRACKING
L8: MW FREQUENCY
COOVERAGE
L6
CT6
SW FREQUENCY
COVERAGE
COVERAGE
CT7: LW TRACKING
CT8: LW FREQUENCY
COVERAGE
CT4: MW FREQUENCY
COVERAGE
IC1
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