70 Installing System ComponentsRemoving an Expansion CardCAUTION: Only trained service technicians are authorized to remove the system cover and access any of thecomponents inside the system. See your Product Information Guide for complete information about safetyprecautions, working inside the computer, and protecting against electrostatic discharge.1 Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.2 Open the system. See "Opening the System" on page 53.3 Disconnect any internal or external cable(s) that are connected to the expansion card.4 Open the expansion-card retainer adjacent to the slot. See Figure 3-15.5 Grasp the expansion card and carefully remove it from the socket connector.6 If you are permanently removing the card, replace the metal filler bracket over the empty card-slotopening.NOTE: Filler brackets must be installed over empty expansion-card slots to maintain FCC certification of thesystem. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside thesystem.7 Close the expansion-card retainer. See Figure 3-15.8 Close the system. See "Closing the System" on page 53.Internal SCSI Tape Backup UnitRemoving an Internal SCSI Tape Backup UnitCAUTION: Only trained service technicians are authorized to remove the system cover and access any of thecomponents inside the system. See your Product Information Guide for complete information about safetyprecautions, working inside the computer, and protecting against electrostatic discharge.1 Turn off the system, including any attached peripherals, and disconnect the system from the electricaloutlet.2 Remove the front bezel, if attached. See "Removing the Bezel" on page 50.3 Open the system. See "Opening the System" on page 53.4 Push the spring-loaded release latch on top of the peripheral bay to left and eject the tape backup unitpartially out of the bay. See Figure 3-16.5 Disconnect the ribbon and power cables on the back of the unit.6 Remove the tape backup unit from the system.7 If you are not replacing the unit, insert the filler plate(s) in the peripheral bay.
