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FM VCO Adjustment
Procedure :
TP
0.01µF
(FM/TV IN)
[MAIN BOARD]
(Side B)
1. Connect the frequency counter as shown in the figure.
2. Turn the set to 98MHz.
3. Adjust RV1 for 76kHz reading frequency counter.
Standar value : 75.8 - 76.2kHz
[MAIN BOARD] (Side A)
TE
L 13942296513
1
5
10
Adjustment Location :
[MAIN BOARD] (SIDE A)
www
.
http://www.xiaoyu163.com
FM RF signal
generator
Carrier frequency : 98MHz
Modulation : No modulation
Output level : 0.1V (100dB/ µV)
RV1 : FM VCO Adjustment
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ao
u163
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i
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http://www.xiaoyu163.com
2 9
8
Q Q
3
6 7
1 3
1 5
frequency counter
1 F
IC1 7 pin
+
IC1 0 pin
33K Ω
RV2 : AM IF Adjustment
L3 : AM Tracking Adjustment
IC1
L4 : FM Tracking Adjustment
L5 : TV Tracking Adjustment
co
.
L7 : AM Frequency Coverage Adjustment
CT1 : AM Tracking Adjustment
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0 5
8
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2 8
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