86    IBM Desktop System HMM
Cover
•
Disconnect the system unit power cord.
•
Remove the 3 screws at the back of the tower.
•
Insert a screwdriver under one of the tabs on the 
back of the cover and gently pry the tower cover so 
that it separates from the tower.
•
Slide the cover back about half inch (or 1.25 
centimeters).
•
Lift the cover up by the top front and back edges, 
pulling the sides out and away from the tower.
NOTE: 
 To prevent the tower from tipping over, you 
may want to lay the tower on its side on a work 
surface, such as a table.