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3. Analog RF Video Trouble Shooting guide
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable, Speaker Cable, IR B/D Cable,,,)
Check RF Cable
Connection
Y
Check tuner 3.3V power L6701
Y
Check tuner 1.2V power IC6701
6pin : 1.2V
Y
Check LG1311 LVDS output
4. Digital RF Trouble Shooting guide
Check RF cable & signal
Y
Check tuner 3.3V power L6701
Y
Check IIC Signal
TU6702 Pin#3,4
Y
Check IF Signal
TU6702 Pin#6,7
Y
Check X101
and application circuit
Replace IC101
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Only for training and service purposes
N
Reconnection
N
Check IC2300
Y
N
Replace IC6701
N
Replace IC101
N
Check IC2300
N
Replace TU6702
N
Replace TU6702
N
Replace X101
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N
Replace IC2300
N
Replace IC2300
LGE Internal Use Only
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