Micom; Led - LG NP8350 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

2. MICOM

MICOM
Is the DC_V of IC103
pin48 3.4 VA?
Is the DC_V of IC103
pin40 3.3 V?
OK.

3. LED

LED
Cable connection is OK?
(CN103, CN300)
5 V, 3.3 V load ?
Check the IC300
pin9 ~ pin15 signal.
OK.
YES
YES
YES
YES
YES
NO
Replace R130, R133.
NO
Check R130, R133
NO
NO
NO
3-9
Check power.
NO
YES
Check power.
Replace cable.
Check power.
Replace IC300.