Troubleshooting - Daewoo FRU-541 Series Service Manual

1. Faulty Start ( Lights OFF, Front PCB Power Dead )
Power plug or fuse is
Checkup and connect
Start
connected?
Yes
1st power of SMPS
is ON?
Yes
Main PCB Fuse is
connected?
Yes
Voltage value on
Main PCB is OK?
Yes
Wire connection of
Front PCB is OK?
Yes
Front PCB wires
No
Chage the plug or Fuse
No
Check the plug connection
from compressor room and to
CN1 of Main PCB
No
( on the Main PCB )
No
Change the Main PCB
No
Chage Front PCB
39
TROUBLE SHOOTING
Change the fuse