Door switch is soaked with
water or it is covered with
water ?
PCB input is OK.
Start
Change the switch.
N
Y
Check and repair any
disconnection of wires and
defective switch.
N
Connector insertion of Main
PCB is OK ?
Y
Check and repair any
disconnection or defective
connection.
N
Door switch itself is OK ?
Y
Change the door switch.
Y
N
Check it up.
6-2) F-PCB continues ON though doors are closed.
(Background Light of F-PCB is ON continuously.)
Check #5,6 of CN4 and
# 4,6 of CN5.
-> Open : 5V, Close : 0V
Failure Checkup & Troubleshooting
Page 22
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