LG TD-C70040E Service Manual page 23

DIAGOSTIC TEST
11
Test 2 DOOR SWITCH / LAMP CHECK
Trouble Symptom : Malfunction of lamp operation and door switch
Measurement condition :
WH3
1 2 3
• With door closed, when
"Start" button is pressed,
lamp turns off and
controller is working, but
the dryer is not working.
No operation of pump motor
Displays "
The door must be closed and start.
When door is opened, lamp
turns on?
(Tumbling stops)
When door is closed, lamp
turns off?
When "Start" button is on, the
dryer is working?
Hook
When door is opened or
closed, door switch hook is
not broken?
• With door closed, check voltage of
YL3
connector WH3
which are pulled out from controller
in advance. The voltage range is
1 2 3
between AC 215~245V?
Check or replace Controller Assembly
Replace Harness and connector
• With door closed, check
voltage of connector WH3
and YL3
out from controller in
advance. The voltage range
is between AC 215~245V?
" in case of the door closed.
YES
NO
NO
and YL3
YES
which are pulled
22
Check door switch
movement.
- See the left picture.
NO
Check and replace lamp.
- See the x page
• Door switch is working
normally.
YES
• Replace door hook and
YES close the door.
• Door frame is distorted
• Check door switch
NO
- See x page
Check Harness
•
NO
Check and replace
•
YES
Controller