Ic601 Troubleshooting; Ic603 Troubleshooting - LG XA14 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

7. IC601 TROUBLESHOOTING

IC601 troubleshooting
Check
IC601 pin34: CLK,
pin35: CKE
YES
OK

8. IC603 TROUBLESHOOTING

IC603 troubleshooting
Check
both end voltage of IC605
(1.2V / 3.3V)
YES
Check IC603
pin13, 47, 94, 120, 122, 124 voltage
1.2V are in
YES
Check
IC603 pin111, 112, X600
operation
YES
When
power supply to IC603 pin107
(Low-->High)
YES
OK
Check
NO
MCU IC603 voltage
1.2V
Check MCU IC603
NO
NO
NO
NO
3-8
NO
YES
NO
YES
Refer Both end voltage
0f IC501, IC605 3.3V/6.2V
Check or replace R601
Check or replace X600
Check IC602 reset circuit
Refer to
MCU troubleshooting
Replace MCU