Serverguide Problems - Lenovo System x3550 M3 Problem Determination And Service Manual

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
Chapter 4 "Parts listing, Lenovo System x3550 M3 Type 4254 and 7944" on page 403
• See
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.
• Go to the IBM support website at
tips, and new device drivers or to submit a request for information.
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

Use this information to solve ServerGuide problems.
System x3550 M3Problem Determination and Service Guide
378
http://www.ibm.com/supportportal/
Action
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.
3. Replace the serial port adapter.
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 connectors" on page
2. Reseat the following components:
a. Failing serial device
b. Serial cable
3. Replace the components listed in step 2 one at a time, in the order shown,
restarting the server each time.
4. (Trained service technician only) Replace the system board.
to determine which
to check for technical information, hints,
"System-board
17).