LG 23MA73D-PUP - 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
Check RF Cable
Check Tuner(TU3700)
Data, CLK, SYN, VAL
Replace Tuner(TU3700)
Recheck
Y
N
1. Check Tuner(TU3700 #5) Power (3.3V)
2. Check IC803 Output voltage(3.3V)
Replace IC803
Y
N
Check Tuner(TU3700) I2C Signal
SCL(R2609), SDA(R2610)
Check IC101
Y
N
1. Check Tuner(TU3700 #7) Power (1.8V)
2. Check IC805 Output voltage(1.8V)
Replace IC805
Y
N