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No
Yes
Yes
No
Replace
Door switch
Replace
Main PCB
Is the condition of
the freezer door switch
like as below?
Reconnect
Is the connection loose?
Is the voltage between pin 11
and 12 of CON6 like as
below?
No
Replace
Main PCB
Is the voltage between pin 4
and pin7 of CON3 like as
below?
Main PCB
SB
SB
F-DOOR Switch
CON6
5
6
Housing
Wiring diagram
SB
SB
7
4
F-Lamp
1
2
BO
BL
CON3
Pin5 SB
Pin6 SB
CON3CON6
DC Part
AC Part
Freezer-lamp Doesn’t work
Replace Lamp
No
Yes
Yes
Voltage of Door switch
Door
Closed
Open
Test Point
pin5 to pin6
pin5 to pin6
Result
5 V
0 V
Status
Normal
Push the Switch
Tester
0 Ω
Infinity
Voltage of Freezer lamp
Door
Closed
Open
Test Point
pin4 to pin7
pin4 to pin7
Result
0 ~ 2 V
115 V
Pin4 BL
Pin7 BO
CON3