LG GR-L28AK Series Service Manual page 54

7-4. Door Switch
Function The switch sense if the door open or close.
- When the door open, lamp on.
- When the door open, the switch give information to Micom.
When the door open, internal contact operate on and off moving plunger of door switch up
and down.
How to
Measure
Beep
Check the resistance between connectors 1, 2 and 3, 4 .It means
check whether or not applying an electric current. If there is
resistance, it means the switch not inferiority
Standard
<Switch, Freezer>
1 2 3 4
3 4
Multimeter beep – Switch F,R
Nomal Push the button(Plunger)
Beep or 0
<Switch, Refrigerator>
Button
(Plunger)
1
Beep
None (
- 54 -
2 3 4
2 1