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Dell™ PowerEdge™ 650 Systems
Replacing the System and
Backplane Board
Assemblies
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Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. Abbreviations and Acronyms For a complete list of abbreviations and acronyms, see the Installation and Troubleshooting Guide. ____________________ Information in thi
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The system board and backplane board are removed from the chassis as a single assembly, and are then separated for replacement of either board. Removing the System Board/Backplane Board Assembly CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. NOTE: It is not necessary to remove the hard drives or the CD/diskette drive from the system during this procedure. To remove the
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17 Loosen the two thumbscrews securing the riser board and disconnect it from the system board card-edge connector. See "Removing the Riser Board" in your Installation and Troubleshooting Guide. 18 Slide the backplane securing latch forward to the open position to allow the system board/backplane board to move to the forward (unlatched) position. 19 Slide the system board/backplane board assembly forward, toward the front of the system and lift the assembly up and out of the chassis. See Fig
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Figure 1-2. Separating the System/Backplane Board Assembly shroud screws (3) system board backplane board power cable 22 Remove the power cable from the power connector on the system board. See Figure 1-2. 23 Release the plastic cable tie that secures the cable connector to connector U3 and remove the free end of the power cable from the backplane board (connector U3). 24 Pull the backplane board away from the system board. See Figure 1-2. Installing the System/Backplane Board Assembly CAUTION
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Figure 1-3. Joining the System/Backplane Board Assembly shroud screw center screw hole system board backplane board power cable 4 Connect the free end of the four-conductor power cable that you installed on the back of the backplane (in step 1) to the power connector (CN2) on the system board. 5 Lower the system board/backplane board into the system chassis with the grounding posts through the holes on the system board. 6 Slide the system board/backplane board assembly back towards the system
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14 Replace the cooling shrouds. 15 Install the memory modules, if they were removed. See "System Memory" in your Installation and Troubleshooting Guide. 16 Connect the control panel cable to the front of the backplane. See "Installing the Control Panel Assembly" in your Installation and Troubleshooting Guide. 17 Connect the hard-drive interface cables either to the backplane or through the backplane to the hard-drive controller card, if one is installed. 18 Connect the hard-drives power cable
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8 Replacing the System and Backplane Board Assemblies www.dell.com | support.dell.com
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