LG FB162I Service Manual page 30

3. IC103 KS4CD21CS CHECK
Check IC100 78KOKF2
22,24 PIN
YES
22 PIN DATA 22 PIN CLK
YES
OK
4. FLD DISPLAY CHECK
Check P7904 1,2,3 power.
YES
F1+,F2- both terminals: over
3.7V Check power VKK: over
-28V.
YES
Check P7302 connection
condition and power F1+,F2-
both terminals: over 3.7V
Check power VKK: over -28V
Check 25 PIN:5.6V
YES
Check IC301 PT6324
power 50 PIN VKK: -28V
9.52 PIN +5V
YES
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Only for training and service purposes
NO
Check MICOM power 5V
YES
Check the related part
YES
OK
NO
Refer to SMPS
Troubleshooting
NO
Check P7302 assembly
YES
Check power of each PIN
YES
OK
4-3
NO
NO
Replace the related parts
NO
Replace the related part
Refer to MICOM
Troubleshooting
LGE Internal Use Only