LG LM-U360 Service Manual page 10

I IC103 KS4CD21CS CHECK
IC100 78KOKF2 22,24
PIN Check
YES
22 PIN DATA
YES
normal
I FLD DISPLAY CHECK
P7904 1,2,3 power check
YES
F1+, F2 both terminal: 5V and
above VKK: power is over 26V
YES
P7302 connection status
check and power check
F+,F2- both termainal: 5V or
above VKK:26V or above
power check
YES
IC301 PT6324 Power check
50 PIN VKK:-26V 9, 51
PIN +5V
YES
NO
MICOM power 5V check
YES
relevant parts check
YES
normal
NO
Refer to SMPS
Troubleshooting
NO
P7302 assembly check
YES
Each PIN power check
YES
normal
- 2-3 -
NO
NO
NO
relevant parts
replacement
Refer to MICOM
Troubleshooting
relevant parts
replacement