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Removal and replacement procedures 58
5. Disconnect the power cables:
a. Disconnect the SATA ODD power cable and ODD cable.
IMPORTANT: Slide the ODD out of chassis before disconnecting the four hard drive power
cables
b. Disconnect the four hard drive power cables.
IMPORTANT: Pull out the system tray by following the procedure steps described in the
Remove the system board
” section.
c. Disconnect the power cable from the system tray.
6. Remove the standard power supply unit out of the chassis:
a. Unfasten the three screws on the back of chassis to release the power supply unit.
b. Pull the standard power supply unit out of the chassis.
IMPORTANT: Reinstall the optical drive by following the procedures described in theTo install an
optical disc drive:section on page 38.