LG M4224C - Page 24

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Only for training and service purposes
LGE Internal Use Only
C
2008
- 24 -
4. NO RASTER STATE ON RGB SIGNAL
NO RASTER STATE ON
RGB SIGNAL
CHECK SIGNAL CABLE AND
OUTPUT DEVICE
CHECK INPUT JACK
(JK103)
NO
CHECK Vcc AND
PERIPHERALS OF IC113
CHECK SCHMITT
TRIGGER I/O
SYNC (IC113)
NO
1. CHECK IC120
2. CHECK Vcc OF IC120
3. CHECK PERIPHERALS OF
IC120
YES
YES