Lenovo 3836, 3809, 3826, 3724 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 the Hardware Maintenance Manual to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

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-event log or IMM system-event log.

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 the Hardware Maintenance Manual to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

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.	Make sure that:
keyboard do not work.
		v The keyboard cable is securely connected.
		v The server and the monitor are turned on.
	2.	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.
	3.	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 mouse or pointing device	1.	Make sure that:
does not work.
		v The mouse or pointing-device cable is securely connected to the server.
		v The mouse or pointing-device drivers are installed correctly.
		v The server and the monitor are turned on.
		v The mouse option is enabled in the Setup Utility program.
	2.	If you are using a USB mouse or pointing device and it is connected to a USB
		hub, disconnect the mouse or pointing device from the hub and connect it
		directly to the server.
	3.	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

166ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide