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7
Explain to customer
4
Check the LED Lamp voltage
Is voltage 12V?
No
Yes
Change the
LED Lamp
Voltage [V]
CON6
28
th
pin ~ 30
th
pin
12V
3
Check the PCB Voltage.
Is CON6 28
th
pin ~ 30
th
pin
voltage 12V?
No
Yes
Change the
PCB
5
Check the LED Lamp voltage.
Is it 0~2V? (While door closed)
No
Yes
Change the
Door S/W
6
Check the LED Lamp voltage.
Is it 12V? (While door open)
No
Yes
Change the
LED Lamp
CON6
LEDLamp
LEDLamp
Refrigerator room lamp doesn’t work
1
Yes
No
Explain to
customer
2
Check the door S/W resistance.
Is it correct compared with table?
No
Yes
Change the
Door S/W
The Switch senses if the door is
open or close.
When the door open, lamp On
When the door Close, lamp Off
Resistance [Ω]
Door S/W
No magent near
the switch
Infinity
Magnet is near
the switch
0
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