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Anleitung Zusammenfassung
Turn off your computer and disconnect it from the electrical outlet for a few hours; then reconnect the computer, turn it on, and enter system setup. If the date and time are not correct in system setup, replace the battery. You can operate your computer without a battery; however, without a battery, the configuration information is erased if the computer is turned off or unplugged from the electrical outlet. In this case, you must enter system setup and reset the configuration options. To replace the battery: 1. Shut down the computer through the Start menu. 2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now. 3. Disconnect any telephone or telecommunication lines from the computer. 4. Disconnect your computer and all attached devices from electrical outlets, and then press the power button to ground the system board. 5. If you have installed a padlock through the padlock ring on the back panel, remove the padlock. 6. Open the computer cover. 7. Locate the battery socket labeled BATTERY. 8. Remove the battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting object such as a plastic screwdriver. 9. Insert the new battery into the socket with the side labeled "+" facing up, and snap the battery into place. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. NOTE: If you have not already done so, make a copy of your configuration information, found in system setup. NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover. NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components. NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board. 10. Close the computer cover and connect your computer and devices to electrical outlets. 11. Enter system setup and restore the settings you recorded before beginning this procedure. 12. Properly dispose of the old battery. For more information see your System Information Guide. Back to Contents Page NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. Back to Contents Page Before You Begin Dell Precision™ Workstation 350 Service Manual This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell Precision™ 350 computer. Unless otherwise noted, each procedure assumes that the following conditions exist: l You have performed the steps in "Precautionary Measures." l You have read the safety information in your System Information Guide. l You have opened the computer cover. Recommended Tools Your computer is primarily a tool-less one, but certain procedures (such as removing the heat-sink blower or the control panel) require the use of one or more of the following tools: l Small flat-blade screwdriver l #1 and #2 Phillips-head screwdrivers l An 8-inch, #2 Phillips-head screwdriver It is recommended that you use a wrist grounding strap as explained in "Precautionary Measures." Precautionary Measures Use the following safety guidelines to help protect your computer from potential damage and to ensure your own personal safety. Before you start to work on the computer, perform the following steps in the sequence listed: 1. Shut down the computer through the Start menu. 2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now. 3. Disconnect any telephone or telecommunication lines from the computer. 4. Disconnect your computer and all attached devices from electrical outlets, and then press the power button to ground the system board. In addition, take note of these safety guidelines when appropriate: l When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector with lockin...