LG 32LT670H-UA Service Manual page 18

Digital RF Trouble Shooting guide
Check RF cable & signal
Y
Check tuner 5V power L3000
Y
Check IIC Signal
TU3001 Pin#3,4
Y
Check DIF Signal
TU3001 Pin#10,11
Y
Check X201
and application circuit
Replace IC101
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Only for training and service purposes
N
Check IC5000
N
Replace TU3001
N
Replace TU3001
N
Replace X201
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N
Replace IC5000
LGE Internal Use Only