LG MCV903 Service Manual page 26

5. IC103 S-24CS16A01-J8T1GE CHECK
CHECK IC100
LC87F5NC8A 81,82
YES
81 PIN DATA 82 PIN CLK
YES
OK
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Only for training and service purposes
NO
Check the communication between
both terminals of R189,190 100Ω
CLK
DATA
NO
Check MICOM power 5V
YES
Check the related part.
YES
OK
3-5
NO
Refer to micom
troubleshooting.
NO
Replace the related parts.
LGE Internal Use Only