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4-3. A Board Adjustment
4-3-1. H. Hold (RV402)
Note : If semiconductors for oscillation and synchronizing circuit, or RV402
are replaced, adjust as follows
1. Receive a color-bar signal.
2. CONTRAST control ............... 50%
BRIGHT control ..................... 80%
H-HOLD control ..................... mechanical center
3. Connect the electrolytic capacitor (10 u F/25 V)
between the pin No.1 of IC401 and GND.
4. Adjust RV402 so that disturbance on the screen stops.
5. Remove the electrolytic capacitor from IC401.
R309
C309
electrolytic
capacitor
(10 µF/25 V)
fo : too low
fo : suitable
4-2
. . . . . Adjustment Point
A Board (A side)
IC401
1
fo : too high
T402
RV402
12
11
IC401
22
1
SSM-175A/175ACE
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