Dell Precision 690 User Guide - Page 104

Back to Contents Page I/O Panel Dell Precision™ Workstation 690 User's Guide I/O-Panel Components Removing the I/O Panel Replacing the I/O Panel 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 opening 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. I/O-Panel Components 1 IEEE 1394 connector 2 USB ports (2) 3 diagnostic, hard-drive access, and network integrity lights 4 microphone connector 5 headphone connector front-panel air temperature sensor 6 NOTICE: The front-panel temperature sensor cable must be installed in this connector at all times while your computer is running or thermal problems may result. Removing the I/O Panel 1. Follow the procedures in Before You Begin. CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other important safety information. CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to the computer. 2. Remove the computer cover (see Removing the Computer Cover). 3. Remove any full-length expansion cards (see Removing an Expansion Card).