LG TD-C70040E Service Manual page 24

DIAGOSTIC TEST
11
Test 3 Motor check
Trouble Symptom : Motor malfunction, ventilation error
Measurement condition : •
WH2
1 2
Power cord is unplugged.
• Door is closed.
• Pre-Check door switch
(If door switch has contact problem, pump motor is not working.)
• When power is on, motor is
rotating.
• During operation, motor noise
is generated. And drum and
blower are not working.
Capacitor
With WH2,BL2 being unplugged
BL2
from Controller,
WH2
WH2
1 2
measurement ranges 18Ω~26Ω ?
• Check controller
-See page 15
(PCB Assembly Lay-out)
NO
NO
- BL2 resistance
- BL 2 resistance
YES
23
• Check or replace
Controller
YES
- TR1, TR2 broken
• Check Capacitor volume.
- See component test page.
- See the left picture.
YES
• Check belt is burst.
• Check structural
restriction.
• Check or replace Motor
NO - Check Motor TP
• Check Harness
connection