Sony CFD-V27 - FM VCO Adjustment

— 12 —
FM VCO Adjustment
Procedure :
1. Connect frequency counter to the positions shown below.
2. Tune the set to 98MHz.
3. Adjust RV1 so that the frequency counter reading becomes
76,000 Hz.
Specification Value :
Adjustment Location : MAIN board (See page 13)
BLACK 10.64MHz
BLUE 10.67MHz
RED 10.70MHz
ORANGE 10.73MHz
WHITE 10.76MHz
0.01 µ F
FM RF Signal generator
FM ANT IN termina
l
Carrier frequency : 98MHz
IF frequency : According to
the color of CF1.
Modulation : no modulation
Output level : 0.1V (100dB)
color
mark
CF1
Frequency counter
75,800 – 76,200 Hz
Frequency counte
r
0.01 µ F
+
–
33k Ω
IC1 Pin 4
IC1 Pin 7