Troubleshooting Guide - LG V-C3850ND Service Manual

TROUBLE SHOOTING GUIDE
1. SWITCH ON BUT MOTOR DOSE NOT RUN.
CHECKING
Check the power source
Normal
2. SWITCH ON, MOTOR DOES NOT RUN BUT BUZZES.
CAUSE
Abnormal
The fuse is melt down
in the coverknife switch
Poor plug insertion
Power cord cut
Interior lead wire cut
Motor(stator armature) coil cut
or damaged
Poor contact carbon brush
defaced
Poor switch contact point
Motor armature cut
Ball bearing defacement
Impeller hindrance
(Caused by foreign matters)
-8-
SOLUTION
Exchange the fuse
Insert again
Repair or exchange
Exchange the lead wire
Exchange the motor
Exchange or repair
Exchange the switch
Exchange the motor
Exchange the motor
Remove the foreign matters