LG 60PY2D-AB Service Manual page 17

5-2. In case of does't display the screen into specific mode
(1) Symptom
The screen does not become the display from specific input mode
Ø
(2) Check following
Check the all input mode should become normality display.
Ø
Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become
Ø
normality display from the PIP mode or DW mode. (Re-Check it Swap)
Check the VPC3230(IC201) if the main picture is abnormal, and
Check the VPX3226(IC301) if the sub picture is abnormal.
(3) In case of becomes unusual display from RF mode
Is the Tuner normal?
Yes
Is the CXA2069Q
(IC301) normal?
Yes
Is the VPC3230 or
VPX3226 normal?
(4) In the case of becomes unusual display from AV mode
Is the CXA2069Q
normal?
Yes
Is the VPC3230 or
VPX3226 normal?
Yes
Is the Scaler normal?
No
Is the Tuner Cable|
connected correctly?
No
Connect the Cable correctly.
No Is the Input voltage, IIC
Communication and HV sync
normal?
Is the Input voltage, IIC
No
Communication and HV sync
normal?
Is the Input voltage, IIC
No
Communication and HV sync
normal?
Is the Input voltage, IIC
No
Communication and HV sync
normal?
No Is the Input voltage, IIC
Communication and HV
sync normal?
Yes
Is the Input voltage, IIC Communication
and CVBS output normal?
No
No
No
No
No
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No
Replace the Tuner
Replace the IC
Replace the IC
Replace the IC
Replace the IC
Replace the IC