IBM x3550 - System - 7978, Problem Determination And Service Manual

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USB keyboard, mouse, or pointing-device problems
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Type 7978 and 1913 server,” on page 29 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.
Symptom Action
All or some keys on the
keyboard do not work.
1. Run the Configuration/Setup Utility program and enable keyboardless operation
to prevent the POST error message 301 from being displayed during startup.
2. See http://www.ibm.com/servers/eserver/serverproven/compat/us/ for keyboard
compatibility.
3. Make sure that:
v
The keyboard cable is securely connected.
v
The server and the monitor are turned on.
4. Reseat the keyboard cable.
5. If you are using an external USB hub, disconnect the keyboard from the hub
and connect it directly to the server.
6. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Keyboard
b. (Trained service technician only) System board
The USB mouse or USB
pointing device does not work.
1. Make sure that:
v
The mouse is compatible with the server. See http://www.ibm.com/servers/
eserver/serverproven/compat/us/.
v The mouse or pointing-device USB cable is securely connected to the
server, and the keyboard and the device drivers are installed correctly.
v
The server and the monitor are turned on.
v
Keyboardless operation has been enabled in the Configuration/Setup Utility
program.
2. Reseat the mouse or pointing-device cable.
3. If you are using an external USB hub, disconnect the mouse or pointing device
from the hub and connect it directly to the server.
4. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Mouse or pointing device
b. (Trained service technician only) System board
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IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide