Ic600 Troubleshooting - LG XA66 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

6. IC600 TROUBLESHOOTING

IC600 troubleshooting
Check
both end voltage
Q600 (3.3V)
YES
Check Q601 "H"
YES
Check
IC604 pin13 3.3V
YES
Check
IC600 pin1, 6 and X601
operation
YES
OK
NO
Refer to power supply no 3.3V
or check and replace Q600
NO
Check IC603 pin5 is "H",
check and replace Q601
NO
Check or replace L600
NO
Check or replace X601
3-7