Hyundai HX300L - Manual (Page 114)

HX200/HX200L-2000/HX300/HX300L/HX400
6-8
6.3.4. Motor
Motor failure causes abnormal operation of robot such as staggering at stop, irregular
twitching and noise in operation. Besides, It may cause overheating and abnormal
sound.
Check the reduction gear and fulcrum bearing as well in order to determine which
part causes the abnormality. It is because that similar phenomenon is observed when
the reduction gear is damaged.
Diagnostics
① Check for overheating and abnormal sound. .
Resolution
① Replace the motor.