LG DLG7188WM Service Manual - Page 22

Test 1

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Test 1 120V AC Electrical supply Caution When measuring power, be sure to wear insulated gloves, to and avoid an electric shock. Trouble Symptom No power was applied to Controller. (LED,LCD Display off) Measurement Condition With Dryer Power On; Connector linked to Controller. BK2 or WH2 WH1 BK WH 12 1 Check the outlet, is the voltage 110V ~ 125V AC? YES Check if the voltage measured between Connector BK2 or WH2- (Black Wire) Linked to the Controller and WH1(White Wire) Is 110~125V? NO • Check the fuse or circuit breaker. • Check if Power NO Cord is properly connected. N (White) L (Black) L (Led) YES Check if the Controller wire is disconnected. Check if Terminal Block and Power Cord are connected (Check Plug ). NO - Does Power Cord N (Natural) line match to Terminal Center N (Natural) line? • Reconnect the controller. YES Replace controIler. 21

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21
Test 1
120V AC Electrical supply
Caution
Trouble Symptom
Measurement Condition
When measuring power, be sure to wear insulated gloves, to and avoid an
electric shock.
No power was applied to Controller. (LED,LCD Display off)
With Dryer Power On; Connector linked to Controller.
Check the outlet, is the voltage
110V ~ 125V AC?
YES
NO
• Check the fuse
or circuit breaker.
Check if the voltage measured between
Connector BK2 or WH2-
(Black Wire)
Linked to the Controller and WH1-
(White Wire) Is 110~125V?
YES
NO
1
1
2
BK2 or WH2
WH1
BK
WH
• Check if Power
Cord is properly
connected.
• Reconnect the
controller.
Replace controIler.
Check if
the Controller wire is
disconnected.
Check if Terminal Block and Power Cord
are connected (Check Plug ).
- Does Power Cord N (Natural) line match
to Terminal Center
N (Natural) line?
YES
NO
L (Black)
L (Led)
N (White)