Tecal RH5485 Server
Problem Determination and Service Guide
3 Diagnostics
Issue 02 (2011-05-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-45
3.5.13 Serial-device problems
Table 3-14
Serial-device problems
Follow the suggested actions in the order in which they are listed in the
Action column until the problem is solved.
See Chapter 4, “Parts listing, ” to determine which components are customer
replaceable units (CRU) and which components are field replaceable units
(FRU).
If an action step is preceded by “(Trained service technician only),” that step
must be performed only by a trained service technician.
Symptom
Action
The
number
of
serial ports that are
identified by the
operating system is
less
than
the
number of installed
serial ports.
1. Make sure that:
Each port is assigned a unique address in the Setup utility and none
of the serial ports is disabled.
The serial-port adapter (if one is present) is seated correctly.
2. Reseat the serial port adapter (see “Removing an adapter” and
“Replacing an adapter”).
3. Replace the serial port adapter.
A serial device
does not work.
1. Make sure that:
The device is compatible with the server.
The serial port is enabled and is assigned a unique address.
The device is connected to the correct connector (see “Internal
LEDs, connectors, and jumpers”).
2. Reseat the following components:
a. Failing serial device
b. Serial cable
c. I/O-board assembly (see “Removing the I/O-board shuttle” and
“Replacing the I/O-board shuttle”)
3. Replace the components listed in step 2 one at a time, in the order
shown,
restarting the server each time.
