LG CM1530 Service Manual page 20

ELECTRICAL TROUBLESHOOTING GUIDE
5 V
YES
F901 nomal?
YES
D901 ~ D904 nomal?
YES
T901 nomal?
YES
Is VCC (9 V ~ 18 V)
supplied to IC901 pin2.
YES
ZD902 nomal?
YES
D909 nomal?
YES
L903 nomal?
YES
Power line of main PCB is short.
NO
Replace F901 (Use same type fuse).
NO
Replace D901 ~ D904.
NO
NO
Check or replace IC902.
NO
NO
NO
3-3
Replace T901.
Replace ZD902.
Replace D909.
Replace L903.