Mouse Cleaning; Removing The Keyboard Enclosure; Removing The Mouse Ball Cover - NEC POWERMATE 8100 Series Service And Reference Manual

A – Screw (one of twelve)
2. Separate the two halves of the enclosure.
3. Clean the enclosure and keys with a damp cloth. A small, soft-bristle brush
may be used to clean between the keys.
Do not wet or dampen the keyboard's printed circuit board. If the board gets
wet, thoroughly dry it before reattaching the keyboard to the system unit.
4. Put the two halves of the enclosure together and secure with the screws.

Mouse Cleaning

The mouse has a self-cleaning mechanism that prevents a buildup of dust or lint
around the mouse ball and tracking mechanism under normal conditions.
Periodically, however, the mouse ball must be cleaned. Use the following
procedure to clean the mouse.
1. Unplug the mouse from the system.
2. Turn the mouse upside down and locate the ball cover (see the following
figure).
3. Turn the ball cover counterclockwise and remove the cover.
A – Mouse Ball Cover

Removing the Keyboard Enclosure

Removing the Mouse Ball Cover

Preventive Maintenance 7-3