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Copyright March 2003, Computer Dynamics, Inc.
All Rights Reserved
MPAC-18 Manual
Maintenance
Cleaning: The touch screen should only be cleaned with Chemtronics (part # ES 1668) cleaner and a
soft lint free cloth. The touch screen should be moistened with the cleaner, avoid rubbing the touch
screen with a dry cloth. The touch screen can easily be scratched, it is very important to not to use
excessive force or sharp objects.
Inspections: Quarterly inspections are recommended to ensure that vent holes on the back of the
enclosure are unobstructed.
Troubleshooting
Power-up
Symptom Possible Causes Solution
Computer does not power up. Power not on (PWR indicator is
not lit or display completely
dark).
Make sure that computer is
plugged in. Make sure that
power source is functioning
properly.
Display is blank (PWR indicator
is lighted).
See “Display” topic in this
Section
See “Display” topic in this
Section
Non-System disk or disk
error message displayed.
Disk in floppy disk drive. Remove floppy disk and then
reboot or cycle power .
Safe Recovery Error message
displayed.
Occurs on initial power up if the
unit is accidentally turned off
without first shutting down the
Windows software.
The computer will power up
normally.
Memory count during power-up
self-test is incorrect.
Optional DIMM is installed
incorrectly or is incompatible
with the DP027010 military
computer CPU.
Make sure that the appropriate
memory is installed correctly.
CMOS checksum error —
Defaults loaded
CMOS battery failed
message displayed.
CMOS battery failure. This battery has a lifetime of up
to 10 years under normal
operating conditions. For more
information, see “CMOS
Checksum Error” topic in this
section.
A screen appears just after
power-up, or just after reset,
which has the title “CMOS
Setup Utility.”
The
F2 key has been
accidentally pressed.
Cycle power again. The
computer will power up
normally.
The computer has reset even
though the power was not
interrupted.
The
CTRL-ALT-DEL keys were
pressed twice at the same
time.
This should never be done,
unless you are attempting to
reset the computer.
A:> appears instead of
software.
A system floppy disk is
inserted.
Remove disk and cycle power.