Nortel North American DMS-100 Instruction Manual page 578

DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
TOPS MPX Power-on self-test troubleshooting
If Suggest Action is
3
4
5
Do
This indicates that the unit detects
an adapter board that identifies to
the system configuration. Go to
TOPS MPX power on self test and
perform Automatic Configuration.
This indicates a problem the
keyboard interface.
- Make sure the keyboard is
plugged into the correct port on the
back of the unit.
- Check for keys on the keyboard
that are pressed or stuck down. If
this action does not correct the
problem, try another keyboard and
cable.
- If the problem persists, go to step
4.
This indicates a problem with the
diskette in the A drive is present.
- To load the diskette again turn off
the power to the PC, wait 10 s and
power back on.
- If the error occurs again, try
another diskette.
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(end)