Cleaning The Cover Of Your Computer - Lenovo ThinkPad T540p User Manual

• When installing the hard disk drive, solid-state drive, or optical drive, follow the instructions shipped with
your hardware, and apply pressure only where needed on the device.
• Turn off your computer before you replace the hard disk drive or solid-state drive.
• After you replace the primary hard disk drive or solid-state drive, reattach the cover of the drive slot.
• Store your external and removable hard disk drive or optical drives in the appropriate containers or
packaging when they are not being used.
• Before you install any of the following devices, touch a metal table or a grounded metal object. This action
reduces any static electricity from your body. Static electricity could damage the device.
Note: Not all listed devices are included in your computer.
– ExpressCard
– Memory card, such as an SD card, SDHC card, SDXC card, and a MultiMediaCard
– Memory module
– Smart card
• When transferring data to or from a flash media card, such as an SD card, do not put your computer in
sleep or hibernation mode before the data transfer is complete; otherwise, your data could become
damaged.
Taking care when setting passwords
• Remember your passwords. If you forget a supervisor or hard disk password, Lenovo will not reset it, and
you might have to replace your system board, hard disk drive, or solid-state drive.
Taking care of the fingerprint reader
The following actions could damage the fingerprint reader or cause it not to work properly:
• Scratching the surface of the fingerprint reader with a hard, pointed object.
• Scraping the surface of the fingerprint reader with your fingernail or anything hard.
• Using or touching the fingerprint reader with a dirty finger.
If you notice any of the following conditions, gently clean the surface of the fingerprint reader with a dry,
soft, lint-free cloth:
• The surface of the fingerprint reader is dirty or stained.
• The surface of the fingerprint reader is wet.
• The fingerprint reader often fails to enroll or authenticate your fingerprint.
Registering your computer
• Register your ThinkPad computer with Lenovo at http://www.lenovo.com/register. For more information,
see "Registering your computer" on page 21.
Be sure not to modify your computer
• Only an authorized ThinkPad repair technician should disassemble and repair your computer.
• Do not modify or tape the latches to keep the display open or closed.

Cleaning the cover of your computer

Occasionally clean your computer by doing the following:
1. Prepare a mixture of a gentle kitchen-use detergent. The detergent must not contain abrasive powder or
strong chemicals such as acid or alkaline. Use five parts water to one part detergent.
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User Guide