16 W he n U si ng Yo ur Co m pu te rw w w . d e l l . c o m | s u p p o r t . d e l l . c o m• Clean the display with a soft, clean cloth and water. Apply the water to the cloth; thenstroke the cloth across the display in one direction, moving from the top of the display tothe bottom. Remove moisture from the display quickly and keep the display dry. Long-term exposure to moisture can damage the display. Do not use a commercial windowcleaner to clean your display.• If your computer gets wet or is damaged, follow the procedures described in "If YourComputer Gets Wet" on page 93 or "If You Drop or Damage Your Computer" on page 94.If, after following these procedures, you confirm that your computer is not operatingproperly, contact Dell (see "Contacting Dell" on page 127 for the appropriate contactinformation).Ergonomic Computing HabitsCAUTION: Improper or prolonged keyboard use may result in injury.CAUTION: Viewing the display or external monitor screen for extended periods oftime may result in eye strain.For comfort and efficiency, observe the ergonomic guidelines in the Tell Me How help file whensetting up and using your computer. To access the help file, see "Accessing Help" on page 86.This portable computer is not designed for continuous operation as office equipment. Forextended use in an office, it is recommended that you connect an external keyboard.When Working Inside Your ComputerBefore removing or installing memory modules, Mini PCI cards, or modems, perform thefollowing steps in the sequence indicated.NOTICE: The only time you should ever access the inside of your computer is when you areinstalling memory modules, a Mini PCI card, or a modem.NOTICE: Wait 5 seconds after turning off the computer before disconnecting a device or removinga memory module, Mini PCI card, or modem to help prevent possible damage to the system board.1 Shut down your computer and turn off any attached devices.2 Disconnect your computer and devices from electrical outlets to reduce the potential forpersonal injury or shock. Also, disconnect any telephone or telecommunication lines fromthe computer.3 Remove the main battery from the battery bay and, if necessary, the second battery fromthe module bay.When Using Your Computer(continued)3Y647bk0.book Page 16 Wednesday, April 2, 2003 3:24 PM