Maintenance; Routine Checks; System Unit Cleaning - NEC IMAGE P100E Service Manual

MAINTENANCE

This subsection contains general information for cleaning and checking the computer's
system unit, keyboard, and monitor.
The system unit, keyboard, and monitor require cleaning and checking at least once a year,
and more often if operating in a dusty environment. No other scheduled maintenance or lu-
brication is required.

Routine Checks

Make the following routine checks when servicing the computer.
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Inspect all external cabling. Replace any damaged cables.
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If the computer no longer saves settings (date, time), replace the battery.
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If raster lines are visible when the monitor is operating, adjust the monitor con-
trast and brightness knobs.
Successful computer power-up is indicated by a beep. This should occur each time the
computer is powered up.

System Unit Cleaning

Use the following procedure for cleaning the system.
1. Power off the system and unplug all power cables.
Periodically wipe the outside of the system unit, keyboard, mouse, and monitor
2.
with a soft, clean cloth. Remove stains with a mild detergent. Do not use solvents
or strong, abrasive cleaners on any part of the system.
Clean the monitor screen with glass cleaner, then wipe with a clean lint-free
3.
cloth.
Local distributors and dealers may sell diskette drive head cleaning kits. These
4.
kits contain special diskettes and cleaning solution. Do not use the abrasive head
cleaning kits (kits without cleaning solution). Insert the diskette immediately af-
ter powering on the system, before the disk boot-up. Allow the diskette drive
heads to clean for about 30 seconds.
WARNING: Unplug all power cords before
performing any maintenance. Voltage is present
inside the system unit and monitor even after the
power button is off. All voltage is removed only
when the power cord is unplugged.
Troubleshooting and Repair 4-7