Electrical Troubleshooting Guide - LG LX-D2560A Service Manual

SECTION 3. ELECTRICAL SECTION
❏ ELECTRICAL TROUBLESHOOTING GUIDE
I MICOM PART CHECK I
Check P7904 6PIN P-SENS
YES
Check power of both
terminals of IC101 KIA7042
YES
Check IC100 78KO/KF2
1 PIN power
YES
OK
NO
Refer to SMPS
Troubleshooting
NO
Check if IC101 KIA7042
input is over 5V.
YES
Check if output voltage
of IC101 KIA7042 is 4.3V
YES
OK
- 3-1 -
NO
Check the related part
of IC101 KIA7042
NO
Replace the
related parts