5.Reconnect the mouse cable to the computer.

6.Turn your computer back on.

The pointer on the screen does not move smoothly with the mouse

Symptom: The pointer on the screen does not move smoothly with the mouse.

Action: Erratic movement of the mouse pointer is generally caused by a buildup of dirt, oils, and other contaminants on the ball inside the mouse. Clean the mouse. See “Optical mouse” on page 43 for instructions.

The fingerprint reader does not work

Symptom: The fingerprint reader does not work.

Action: The following could cause the fingerprint reader not to operate properly:

Not enrolling your fingerprint correctly.

Scratching the surface of the reader with a hard, pointed object.

Scraping the surface of the reader with your nail or anything hard.

Using or touching the reader with a dirty finger.

The surface of your finger is very different from when you enrolled your fingerprint.

The wireless keyboard does not work

Symptom: The wireless keyboard does not work.

Action: If the Transceiver Communications LED is on and the wireless Keyboard does not work, restart your computer. If restarting your computer does not solve the problem, verify that the following conditions are met:

The batteries are properly installed.

The batteries still retain their current.

The wireless Keyboard is located less than ten meters away from the transceiver.

The transceiver is fully installed.

Action: If the Transceiver Communications LED is not on, reconnect the transceiver and the keyboard.

Monitor problems

Note: Many monitors have status-indicator lights and built-in controls for adjusting brightness, contrast, width, height, and other picture adjustments. However, the controls vary from monitor type to monitor type. For information about the status lights and using the controls, refer to the documentation that comes with your monitor.

Select your symptom from the following list:

“Wrong characters appear on the screen” on page 45

“The monitor works when you turn on the computer, but goes blank after some period of computer inactivity” on page 45

“The monitor works when you turn on the computer, but goes blank when you start some application programs” on page 45

“The image appears to be flickering” on page 45

“The image is discolored” on page 46

44ThinkCentre E73z Hardware Maintenance Manual

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Image 48
Lenovo E73Z Monitor problems, Pointer on the screen does not move smoothly with the mouse, Wireless keyboard does not work