Test 5 Door Switch Test - LG DLE9577WM Service Manual

Test 5
Door switch test
Caution
Trouble Symptom
Measurement Condition
Before measuring resistance, be sure to turn Power off, and do voltage discharge.
(When discharging, contact the metal plug of Power cord with earth line.)
Door Opening is not sensed.(During operation, when opening Door, Drum motor and
Heater run continuously) Door Close is not sensed.
(Drum motor will not operate. Display will flash at 0.5 second intervals.)
After turning Dryer Power Off, measure resistance.
Measure while Door is closed. Check it resistance is
below 2500 Ω between WH1- (White wire) and
BK2- Connector
WH1,BL2 after taking WH1,BL2 out from Controller.
Measure while Door is open. Check it resistance is
300~60 Ω between WH1- (White wire) and BK2-
(Black wire). Connector WH1,BL2 after taking
WH1,BL2 out from Controller.
Measure while Door is open. Check it resistance is
below 1 Ω between BL2-
WH1- (White wire) after taking Connector WH1,BL2
out from Controller.
Measure while Door is closed. Check it resistance is
below 1 Ω between BL2-
WH1- (White wire) after taking Connector WH1,BL2
out from Controller.
Check Controller.
Check Harness-linking connector.
NO
YES
(Yellow wire) and
NO
(Yellow wire) and
YES
30
• Door switch
Check (Refer to
YES
Component
testing.)
• Check Lamp.
(When opening
Lamp, replace then
measure again.)
NO
• Door switch
Check(Refer to
Component
testing.)
• Door switch
Check (Refer to
YES
Component
testing.)
• Door switch
Check (Refer to
NO
Component
testing.)