NEC PowerMate Professional 9000E Series User Manual page 109

2. Line up the top cover tabs with the cutaway on the top of
the chassis. The front edge of the cover should be about
one-half inch behind the front of the chassis. The rear
edge of the cover should be held higher than the front
edge. See the following figure.
Aligning the top cover
A – Chassis Cutaway B – Top Cover Tabs (on underside of cover)
C – Top Cover
Note:
Although the figure shows the system
without a side cover, both side covers must be
replaced before the top cover can be replaced.
3. Slide the cover forward to meet the front panel as you
lower the rear edge. The top cover should slide over the
tops of the side covers.
Installing Options 4-11