Abnormal Screen (Hdmi) - Main Pcba - LG 22LS2100 Service Manual

7. Abnormal screen (HDMI)-Main PCBA
Abnormal screen (RGB PC)
1
Put into RGB
cable completely?
2
Is Input signal timing
and f ormat in spec?
3 Is wavef orm at R628,
R630, R634
Change IC600
WAVEFORMS
3
R630(G)
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Only for training and service purposes
NO
YES
NO
YES
NO
YES
R634(R)
Change Timing according to
product spec, Or change f ormat to RGB
Check Line between P302 and IC600
is open or short, Another is
- 18 -
insult RGB cable tight
Change RGB cable
R628(B)
LGE Internal Use Only