Lenovo TD100X manual Intermittent problems, Keyboard, mouse, or pointing-device problems

Intermittent problems

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee Chapter 3, “Parts listing, TD100 Types 6398, 6399, 6419, 6429, 4203, and 4206,” on page 25 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Symptom	Action
A problem occurs only	1.	Make sure that:
occasionally and is difficult to
		v All cables and cords are connected securely to the rear of the server and
diagnose.		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 (see “Error logs” on page 153).
	3.	See “Solving undetermined problems” on page 215.

Keyboard, mouse, or pointing-device problems

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee Chapter 3, “Parts listing, TD100 Types 6398, 6399, 6419, 6429, 4203, and 4206,” on page 25 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf 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	1. If you are using a USB keyboard, run the Configuration/Setup Utility program
keyboard do not work.
	and enable keyboardless operation to prevent the 301 POST error message
	from being displayed during startup.

2.See http://www.lenovo.com/support

3.Make sure that:

v The keyboard cable is securely connected.

vIf you are using a PS/2 keyboard, the keyboard and mouse cables are not reversed.

vThe server and the monitor are turned on.

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

Chapter 5. Diagnostics 175