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HP 1850R - ProLiant - 128 MB RAM Troubleshooting Manual: Diagnostic Adapter

Proliant server troubleshooting guide.
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Table 2-17: Mouse/Keyboard Problems
Problem
Mouse does not respond
to movement, or
keyboard does not work
(continued).
Keyboard does not work
or some keys stick.

Diagnostic Adapter

If you have a server that supports the Diagnostic Adapter and you are using a PS/2
keyboard or mouse, the Diagnostic Adapter cannot be connected as a hot-plug
device. You must connect the Diagnostic Adapter before booting the server on these
systems, or switch to USB devices (if the operating system supports USB devices) to
use the Diagnostic Adapter hot-plug functionality.
HP Servers Troubleshooting Guide
continued
Possible Cause
System is not responding
and must be restarted.
Switch box cable is too
long.
Keyboard is not
connected to correct port.
Look for signs of spilled
beverages.
Possible Solution
If the device or port is bad, there should
be a POST error. If there is a POST
error, swap another PS/2 mouse or
keyboard.
If the problem still occurs with the
new mouse or keyboard, then the
connector port on the system I/O
board is defective. Replace the
board.
If the problem no longer occurs, then
the original input device is defective.
Replace the device.
If there was no POST error, check
whether the input device functions
properly after the system is restarted.
If the problem is still not resolved, there
may be a corrupted device driver.
Replace the device driver.
Replace with a supported cable.
Determine whether the keyboard lights
flash at POST or the NumLock LED
illuminates. If not, change port
connections.
Keyboard requires cleaning or
replacement.
Hardware Problems
2-39

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