6. Troubleshooting and check 
 
6-8 
 
3) Motor bearing: Replace the motor at rated speed and rated load based on 20,000 to 30,000   
 hours. Since the bearing of the motor depends on the operating conditions, replace it even if   
 you find abnormal noise or abnormal vibration during inspection.     
[Standard replacement years of parts] 
Standard 
replacement 
years 
replacement method, others 
Replacement with new boards 
(decision after inspection) 
decision after inspection 
Replacement with new boards 
decision after inspection 
Aluminum Electrolytic Capacitors on 
Printed Boards 
Replacement with new boards 
(decision after inspection) 
 
 
 
6.5.  Preservation 
 
6.5.1.  Servo Motor 
 
If you do not use it right away, please keep the following things in mind. 
1) Keep in a clean and dry place. 
 
  (Caution!) No condensation or freezing