Troubleshooting guide

Troubleshooting Guide
42
Suspected APC failure. The APC is faulty, or the APC
battery is low.
Remove and replace the APC-MXe battery.
See the “Application Processor Card” section
in the “Install and Replace Units” chapter of the
MCD Technician’s Handbook for instructions.
If that doesn’t fix the problem, ping the APC IP
(System IP) address. If the ping is successful,
ssh to the APC IP address and type a few
basic commands like:
>ll
>ls
>cd
If these commands succeed, the problem is
likely not the APC.
Ping to APC failed. APC is faulty. Remove and replace the APC-MXe battery.
See the “Application Processor Card” section
in the “Install and Replace Units” chapter of the
MCD Technician’s Handbook for instructions.
If that doesn’t fix the problem, make a serial
connection to the printer port (38400 8N1).
<Enter> to login to Linux, and issue some
basic commands:
>ll
>ls
>cd
If these commands succeed, APC is not faulty.
See Network connectivity is broken, below.
Network connectivity is
broken.
Recheck network connections.
Login via the serial connection
to printer port fails
Either the cable is not
connected properly, or there
is a problem with the
application you are using to
connect.
Check the cables.
Try the basic connection options: Vt100
terminal running 38400 8N1, and so on.
If that does not resolve the problem, power
down the fulll unit and power it back on. If there
is not output and no MSL login, then you will
have to consider replacing the APC.
Given the effort required to replace the APC,
you may choose to replace the full system.
Table 10: MXe Server
Symptom Probable Cause Corrective Action
Page 2 of 3