Intermittent problems
Action
A problem occurs only
occasionally and is
difficult to detect.
Verify that:
1. All cables and cords are securely connected to the rear of the system
and to attached options.
2. The last external device in each SCSI chain is terminated correctly.
(See “Hard disk drives” on page 80 for more information on SCSI
termination.)
If the items above are correct, have the system serviced.
Keyboard, mouse,
or pointing-
device problems
Action
All or some keys on the
keyboard do not work.
Do the following:
1. Verify that the keyboard cable is properly connected to the system
and that the system and the monitor are turned on.
2. Attach another keyboard to the keyboard connector.
If the problem persists, have the system serviced.
The mouse or pointing
device does not work.
Do the following:
1. Verify that the mouse or pointing-device cable is securely connected.
2. Verify that the device drivers are installed correctly.
3. Attach another mouse or pointing device to the pointing-device port.
Note:
The pointing-device port is also known as the auxiliary-device port
or mouse port.
If the problem recurs, have the system and the device serviced.
Memory problems
Action
The amount of memory
displayed is less than the
amount of memory
installed.
Verify that:
1. The memory modules and memory boards are seated properly.
2. You have installed the correct type of memory (see “Installing DIMMs
and memory boards” on page 52).
3. If you changed the memory, you must update the configuration by
running the Configuration/Setup Utility program (see “Using the
Configuration/Setup Utility main menu” on page 21).
If the above items are correct, run the memory diagnostic program.
The system might have detected a defective memory module and
automatically reallocated memory to enable you to continue to
operate. If the memory tests fail, have the system serviced or replace
the failing DIMM.
Option problems
Action
An IBM option that was
just installed does not
work.
Verify that:
1. The option is designed for your server. For a list of supported
options, go to http://www.ibm.com/pc/us/compat/ on the World Wide
Web.
2. You followed the installation instructions that were supplied with the
option.
3. The option is installed correctly.
4. You have not loosened any other installed options or cables.
5. You updated the configuration information. Whenever you change the
memory or an option, you must update the configuration by running
the Configuration/Setup Utility program (see “Using the
Configuration/Setup Utility main menu” on page 21).
If all of the above items are correct, start the diagnostic programs. If the
diagnostic programs find no problem, have the system and the option
serviced.
Chapter 6. Solving problems
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