-18-
5
1
Do not only START key and
EZ-ON key operate? Door
should be closed?
Does the keys operate?
No
Yes
No
2
Is there beep sound in
continuity test between the
ends of latch board?
Secondary Switch (Door
should be closed)
Power ON
Yes
No
Adjust latch
board (Refer to
9-1, 9-2)
Check PWB
Go to No.5 of
this flow chart.
3
When the door is opened, Is
the voltage of door sensing
part over 4V?
(Pin 1 to Pin 3 of CN4)
Yes
No
Replace the
PCB
(EBR64419604)
4
Is the connector connected
to MAIN PCB assembly
disconnected or
disassembled? (CN3)
No
Yes
Reconnect or
repair
the connector.
Replace the Door PCB.
EBR64419501
Replace the Keypad if
changing the door PCB
doesn’t resolve the problem
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