Maintenance  DC Asterion Series 
5-2  M330460-01  Rev A 
 
•  Once a unit is removed from service, vacuum all air vents, including the front panel 
grill.  
•  Clean the exterior with a mild solution of detergent and water. Apply the solution onto 
a soft cloth, not directly to the surface of the unit. To prevent damage to materials, do 
not use aromatic hydrocarbons or chlorinated solvents for cleaning. 
•  Check  external  connections  for  integrity  of  insulation,  loose  contacts,  and  proper 
torque. 
•  If there is any evidence of short-circuits or arcing, overheating, or corrosion, contact 
the factory for recommended service. 
5.3  Fuses 
There are no user replaceable components in the power supply. Internal fuses are listed 
in Table 5–1. Fuses are sized for fault isolation, and, an open fuse might indicate that a 
circuit component has been damaged. Contact the factory for further assistance.  
CAUTION! 
To reduce the risk of fire or electrical shock, replace fuses only 
with the same type and rating.