Serial Port Problems; Serverguide Problems - Lenovo 5458 Installation And Service Manual

Table 27. Power problems and actions (continued)
Symptom
The server unexpectedly shuts
down, and the LEDs on the
operator information panel are
not lit.

Serial port problems

v Follow the suggested actions in the order in which they are listed in the Action
v If an action step is preceded by '(Trained technician only)', that step must be
v Go to the Lenovo support website at http://www.lenovo.com/support to check
Table 28. Serial port problems and actions
Symptom
The number of serial ports that
are identified by the operating
system is less than the number
of installed serial ports.
A serial device does not work.

ServerGuide problems

v Follow the suggested actions in the order in which they are listed in the Action
v If an action step is preceded by '(Trained technician only)', that step must be
v Go to the Lenovo support website at http://www.lenovo.com/support to check
Action
See "Solving undetermined problems" on page 147.
column until the problem is solved.
performed only by a Trained technician.
for technical information, hints, tips, and new device drivers or to submit a
request for information.
Action
1. Make sure that:
v Each port is assigned a unique address in the Setup utility and none of the
serial ports is disabled.
v The serial-port adapter (if one is present) is seated correctly.
2. Reseat the serial port adapter.
3. Replace the serial port adapter.
1. Make sure that:
v The device is compatible with the server.
v The serial port is enabled and is assigned a unique address.
v The device is connected to the correct connector.
2. Reseat the following components:
a. Failing serial device
b. Serial cable
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Failing serial device
b. Serial cable
c. (Trained technician only) System board
column until the problem is solved.
performed only by a Trained technician.
for technical information, hints, tips, and new device drivers or to submit a
request for information.
Chapter 4. Troubleshooting
143