Place the model 505 in the service position

You might need to place a system into the service position to perform service or gain access to internal components. Use the instructions in this section to perform this task.

1. Record any error or log messages before you stop the system.
2. Stop the system. For instructions see, Stop the system or logical partition.
3. If necessary, open the front rack door.
4. Carefully label and remove all cables and cords from the unit.
5. Remove the cable management arm from the system by doing the following:
   1. Pull the release latch in the lower-left corner into the unlocked position.
   2. Slide the cable management arm to the right detaching it from the system unit.
6. Remove the two screws A that secure the system unit to the rack as shown in the following figure.
7. Release the rack latches B on both the left and right sides as shown in the previous figure.
8. Review the following notes, and then slowly pull the system unit out from the rack until the system unit is fully extended and locked.
   Note:

   • Ensure that the cables at the rear of the system unit do not catch or bind as you pull the unit out from the rack.
   • Ensure the rails are fully extended. When the rails are fully extended, the rail safety latches lock into place. This action prevents the system unit from being pulled out too far.
9. Press the rail safety latches A to release the system from the rack, as shown in the following figure.
10. Grasp each side of the system unit and pull the system unit out of the rack.
    CAUTION:
    This unit weighs approximately 17 kg (37 pounds). Be sure you can safely support this weight when removing the system unit from the rack.
11. Place the system unit on a sturdy flat surface capable of safely supporting the system unit while you are servicing it.