Ic103(Ks4Cd21Cs) Check - LG MCD112 Service Manual

6. IC103(KS4CD21CS) CHECK

Check
IC100(78KOKF2)_
PIN 22, 24
YES
PIN22
DATA PIN24 CLK
YES
OK
LGE Internal Use Only
NO
Check micom
voltage 5V.
Check micom.
OK
3-4
NO
YES
NO
YES
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Refer to
micom troubleshooting
Replace micom.
Only for training and service purposes