LG FB162-A0U Service Manual page 31

YES
Check IC100 © IC301 DATA
communication
PIN PIN
75 PIN © 3PIN STB
76 PIN © 2PIN DO
78 PIN © 1PIN CLK
YES
FLT light on
YES
OK
LGE Internal Use Only
NO
When 5V fails,check
D321SR35 input and
output power
YES
Check the related part
YES
IC100
75 PIN © STB
NO
78 PIN © 1PIN CLK
Check Data output.
YES
Check 76 PIN © DO
© DATA input
YES
Check the related part
YES
NO
Replace the related part
OK
NO
Replace the related part
OK
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Only for training and service purposes