LG 50PM1M Service Manual page 23

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
(RF, AV, Component, RGB, DVI).
(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)
(3) In case of becomes unusual display from RF mode
Is the Tuner normal?
Yes
Is the CXA2069Q
normal?
Yes
Is the FIL8532
normal?
(4) In the case of becomes unusual display from RF, AV mode
Is the CXA2069Q
normal?
Yes
Is the FIL8532
normal?
(5) In the case of becomes unusual display from Component, RGB mode
Is the FIL8532
normal?
(6) In the case of becomes unusual display from HDMI mode
Is the Sil9011
normal?
Yes
Is the FIL8532
normal?
No
Is the Tuner Cable
connected well?
No
Cable inserts well.
Is the Input voltage, IIC
No
Communication and HV sync
normal?
No
Is normal the Input voltage, IIC
Communication and HV sync?
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?
Is the Input voltage, IIC
No
Communication and HV sync
normal?
Is the Input voltage, IIC
No
Communication and HV sync
normal?
Yes
Is the Input voltage, IIC Communication
No
No
No
No
No
No
No
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and CVBS output normal?
No
Replace the Tuner
Replace the IC
Replace the IC
Replace the IC
Replace the IC
Replace the IC
Replace the IC
Replace the IC