LG DLG2522W Service Manual - Page 26

Test 5

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Test 5 Door switch test Caution 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 Trouble Symptom Heater run continuously; Door Close is not sensed. (Drum motor will not operate. Display will flash at 0.5 second intervals.) Measurement Condition After turning Dryer Power Off, measure resistance. Measure while Door is closed. Check if resistance is below 250Ω between WH3(White wire) and RD3- (Black wire) Connector WH3, RD3 after taking WH3, RD3 out from Controller. YES NO Measure while Door is open. Check if resistance is 300~60Ω between WH3- (White wire) and RD3- (Black wire) NO Connector WH3, RD3 after taking WH3, RD3 out from Controller. YES • Door switch Check (Refer to Component testing.) • Check Lamp. (When opening Lamp, replace then measure again.) • Door switch Check(Refer to Component testing.) Measure while Door is open. Check if resistance is below 1Ω between BL2(Yellow wire) and WH3- (White wire) after YES taking Connector WH3, BL2 out from Controller. NO • Door switch Check (Refer to Component testing.) Measure while Door is closed. Check if resistance is below 1Ω between BL2(Yellow wire) and WH3- (White wire) after NO taking Connector WH3, BL2 out from Controller. YES • Door switch Check (Refer to Component testing.) Check Controller. Check Harness-linking connector. 25

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25
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.
Check Controller.
Check Harness-linking connector.
Measure while Door is closed. Check if
resistance is below 250Ω between WH3-
(White wire) and RD3-
(Black wire)
Connector WH3, RD3 after taking WH3, RD3
out from Controller.
NO
YES
• Door switch
Check (Refer to
Component
testing.)
Measure while Door is open. Check if
resistance is 300~60Ω between WH3-
(White wire) and RD3-
(Black wire)
Connector WH3, RD3 after taking WH3, RD3
out from Controller.
YES
NO
• Check Lamp.
(When opening
Lamp, replace then
measure again.)
• Door switch
Check(Refer to
Component
testing.)
Measure while Door is open. Check if
resistance is below 1Ω between BL2-
(Yellow wire) and WH3-
(White wire) after
taking Connector WH3, BL2 out from Controller.
NO
YES
• Door switch
Check (Refer to
Component
testing.)
Measure while Door is closed. Check if
resistance is below 1Ω between BL2-
(Yellow wire) and WH3-
(White wire) after
taking Connector WH3, BL2 out from Controller.
YES
NO
• Door switch
Check (Refer to
Component
testing.)