LG FH2 - Page 27

3-10
ELECTRICAL TROUBLESHOOTING GUIDE
SYSTEM POWER SUPPLY ON SMPS BOARD
YES
YES
YES
RED
YES
YES
YES
No Charge
Charging
Check IC3 and replace it.
FULL charged.
Check IC4 and replace it.
Check F1, R6, R8 and replace it.
Check IC5 and replace it.
NO
NO
GREEN
NO
NO
NO
Is VD(11 V-15.3 V)
normal?
Is IC3 normal?
Is charge LED normal?
Is IC4 normal?
Is CN1(10.5 V-14.8 V)
normal?
Is IC5 normal?
A