Dell Precision 490 Desktop User's Guide - Page 124

Back to Contents Page Removing the Computer Cover and Front Panel Dell Precision™ Workstation 490 User's Guide Removing the Computer Cover Removing the Front Panel Rotating the Hard-Drive Carrier Out of the Computer Removing the Computer Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer. 1. Follow the procedures in Before You Begin. NOTICE: Opening the computer cover while the computer is running could result in a shutdown without warning and a loss of data in open programs. The computer cooling system cannot function properly while the cover is removed. 2. If you have installed a security cable, remove it from the security cable slot. NOTICE: Ensure that sufficient space exists to support the removed cover-at least 30 cm (1 ft) of desk top space. NOTICE: Ensure that you are working on a level, protected surface to avoid scratching either the computer or the surface on which it is resting. 3. Lay your computer on a flat surface with the cover facing up. 4. Pull back the cover latch release. NOTE: The computer in the following images is configured as a tower computer. See Changing Between Tower and Desktop Modes for information regarding computer orientation. 1 cover latch release 2 computer cover 3 cover hinges 5. Locate the three hinge tabs on the edge of the computer. 6. Grip the sides of the computer cover and pivot the cover up, using the hinges as leverage points.