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3. Open the system: a. Loosen the two thumbscrews that secure the cover to the chassis. b. Slide the top cover backward and grasp the cover at both sides. c. Carefully lift the cover away from the system. 4. If applicable, remove the SCSI backplane daughter card. CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. NOTE: The control panel assembly consists of two separate modules—the control panel and the USB/video-connectors. Use the following instructions to remove and install either module. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. 5. Remove the USB/video-connector module securing screw and remove the module. See Figure 1-1. 6. Remove the two control-panel securing screws and remove the control panel. 7. Disconnect the control panel from the control panel cable. Figure 1-1. Control Panel Removal Installing the Control Panel 1. Connect the control panel to the control panel cable. See Figure 1-1. 2. Slide the control panel into the chassis and secure it with the two control-panel securing screws. See Figure 1-1. 3. Replace the USB/video-connector module and secure it with the USB/video-connector module securing screw. See Figure 1-1. 4. If applicable, replace the SCSI backplane daughter card. 5. Close the system. 6. If applicable, install the bezel. Expansion-Card Riser Board Removing the Expansion-Card Riser Board 1. If applicable, remove the bezel: CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. a. Use the system key to unlock the bezel. b. Press the tab at the left end of the bezel. c. Rotate the left end of the bezel away from the system to release the right end of the bezel. d. Pull the bezel away from the system. 2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet. 3. Open the system: a. Loosen the two thumbscrews that secure the cover to the chassis. b. Slide the top cover backward and grasp the cover at both sides. c. Carefully lift the cover away from the system. 4. Remove the expansion-card cage. 5. Disconnect the SCSI cable(s) from the SCSI connector(s). Note the relative location of the SCSI cable(s) to ensure that you properly reconnect the cable(s) to the correct connector(s). 6. Remove all expansion cards from the expansion-card slots. 7. If applicable, remove the RAID memory module. 8. If applicable, disconnect the RAID battery cable. 9. Press both release tabs on the expansion-card guide and swing open the guide. See Figure 1-2. 10. Remove the expansion-card riser board: a. Pull the expansion-card riser release pin. See Figure 1-2. b. While pulling the release pin, slide the riser board away from the expansion card openings. c. Lift the riser board from the six securing tabs. Figure 1-2. Expansion-Card Riser Removal Installing the Expansion-Card Riser Board CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against 1. Place the riser board in the expansion-card cage so that the six securing tabs are fully inserted in the six securing slots on the riser board. See Figure 1- 2. 2. Slide the riser board toward the expansion card openings until you feel the riser-board release pin snap into place. 3. Close the expansion-card guide. 4. If applicable, connect the RAID battery cable. 5. If applicable, install the RAID memory module. 6. Install all expansion cards in the expansion-card slots. 7. Connect the SCSI cable(s) to the SCSI connector(s). 8. Replace the expansion-card cage. 9. Close the system. 10. If applicable, install the bezel. SCSI Backplane Board Removing the SCSI Backplane Board 1. If applicable, remove the bezel: a. Use the system key to unlock the bezel. b. Press the tab at the left end of the bezel. c. Rotate the left end of the bezel away from the system to release the right end of the bezel. d. Pull the bezel away from the system. 2. Turn off the system and attached peripherals, and disconnect the system from...