Intermittent Problems; Keyboard, Mouse, Or Pointing-Device Problems - Lenovo ThinkServer TD200x Hardware Maintenance Manual

Intermittent problems

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823 to determine which 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.
Symptom
A problem occurs only
occasionally and is difficult to
diagnose.

Keyboard, mouse, or pointing-device problems

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823 to determine which 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.
Symptom
All or some keys on the
keyboard do not work.
Action
1. Make sure that:
• All cables and cords are connected securely to the rear of the server and
attached devices.
• 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-event log or IMM log (see Event logs).
3. See Solving undetermined problems.
Action
1. Make sure that:
• The keyboard cable is securely connected.
• The server and the monitor are turned on.
2. See http://www.lenovo.com/thinkserver and then click Options. Open the
Server Options Guide.pdf for keyboard compatibility.
3. If you are using a USB keyboard, run the Setup utility and enable keyboardless
operation to prevent the 301 POST error message from being displayed during
startup.
4. If you are using a USB keyboard and it is connected to a USB hub, disconnect
the keyboard from the hub and connect it directly to the server.
5. 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
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Chapter 5 Diagnostics