Lighting - LG FH6 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE
6. NO LIGHTING
No Sparkling LED
IC307 pin6
5 V power OK?
CN104
pin13, 14, 15, 17, 18, 19
signal OK?
IC101
pin24, 25, 26, 27, 28, 29
signal OK?
Check or replace IC101.
No SPK Cone LED
IC307 pin6
5 V power OK?
CN104
pin5, 6, 7, 9, 10, 11
signal OK?
IC101
pin5, 15, 16, 20, 21, 22
signal OK?
Check or replace IC101.
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
and CN1004/ CN1001 connection.
NO
Check Q113 ~ Q124.
NO
NO
and CN1004/ CN1001 connection.
NO
Check Q101~ Q112.
3-31
Check IC307.
Check CN104
Check IC307.
Check CN104