LG 22LF4520 - Page 15

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LGE Internal Use Only
Copyright © LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. No Video - Digital TV
Check RF Cable
Y
1. Check RF IC(L200) Power (3.3V)
2. Check IC501 Output voltage(3.3V)
Replace IC501 &
Recheck
Y
N
Check SCL/SDA Line(TU200 #3, #4)
Replace TU200 or
IC300(=> Main Scaler
)
N