Daewoo FRS-2021 Service Manual page 89

Failure Checkup & Troubleshooting
6-2) F-PCB continues ON though doors are closed.
(Background Light of F-PCB is ON continuously.)
Door switch is soaked with
water or it is covered with
PCB input is OK.
Connector insertion of Main
Door switch itself is OK ?
Start
water ?
N
Check #5,6 of CN4 and
# 4,6 of CN5.
Y
-> Open : 5V, Close : 0V
PCB is OK ?
Y
Y
Check it up.
Y
Change the switch.
N
Check and repair any
disconnection of wires and
defective switch.
N
Check and repair any
disconnection or defective
N
Change the door switch.
connection.
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