Read Sony CFD-930L / CFD-V34L / CFD-V37L Service Manual online
— 13 —
FM VCO Adjustment
Procedure :
1. Connect frequency counter to the positions shown below.
2. Tune the set to 98MHz.
3. Adjust RV1 for 75.950kHz to 76.050kHz reading on the
2. Tune the set to 98MHz.
3. Adjust RV1 for 75.950kHz to 76.050kHz reading on the
frequency counter.
0.01
µ
F
FM RF SSG
to ANT IN terminal
Carrier frequency : 98MHz
IF frequency : According to
the color of CF1.
Modulation : no modulation
Output level : 0.1V (100dB)
IF frequency : According to
the color of CF1.
Modulation : no modulation
Output level : 0.1V (100dB)
Frequency counter
0.01
µ
F
+
–
–
33k
Ω
IC1 Pin
4
IC1 Pin
7
RED
10.70MHz
BLUE
10.67MHz
ORANGE
10.73MHz
BLACK
10.64MHz
WHITE
10.76MHz
color
mark
mark
CF1
Adjustment Location : MAIN board (Component side)
CT7
CT8
L11
L4
L2
L3
T2
T1
L1
CV1
RV1
IC701
CV1 (1/4)
CV1 (2/4)
L1
L2
FM Tracking
CV1 (3/4)
RV1 : FM VCO
L3 (MW)
MW/AM Tracking Adjustment
FM Reception Frequency
Coverage Check
Coverage Check
L11
CT8
LW Reception Frequency
Coverage Check
Coverage Check
L4
CV1 (4/4)
MW/AM Reception Frequency
Coverage Check
Coverage Check
CT7
L3 (LW)
ANT IN
LW Tracking Adjustment
T1 : FM IF
IC1 : VCO IN
IC1
11
18
1
30
4
FM IF IN
’
‘
T2 : AM IF
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