IBM System x3800 Installation Manual page 57

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the parts listing in the Problem Determination and Service Guide to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
A hard disk drive passes the
diagnostic Fixed Disk Test but
the problem remains.
Intermittent problems
A problem occurs only
occasionally and is difficult to
diagnose.
Standard or USB keyboard,
mouse, or pointing-device
problems
All or some keys on the
keyboard do not work.
Run the diagnostic SCSI Fixed Disk Test.
Note: This test is not available to servers using RAID or servers with IDE or SATA
hard disk drives.
Action
1. Make sure that:
v All cables and cords are connected securely to the rear of the server and
attached devices.
v When the server is turned on, air is flowing from the fan grille. If there is no
airflow, the fan is not working. This can cause the server to overheat and
shut down.
2. Check the system-error log or BMC log.
Action
1. (USB keyboard) If you have installed a USB keyboard, run the
Configuration/Setup Utility program and enable keyboardless operation to
prevent the POST error message 301 from being displayed during startup.
2. (Standard keyboard) If the server is attached to a KVM switch, bypass the KVM
switch to eliminate it as a possible cause of the problem: connect the keyboard
cable directly to the correct connector on the rear of the server.
3. Make sure that:
v The keyboard cable or USB cable is securely connected to the server and
the keyboard and mouse cables are not reversed.
v The server and the monitor are turned on.
4. Reseat the following components:
a. Keyboard
b. I/O board
5. Replace the components listed in step 4 one at a time, in the order shown,
restarting the server each time.
Chapter 6. Solving problems
45