Remove a board from a powered-on system only after the ASR software has disabled the board. If a board has not been disabled by the ASR software, then the operating system should be halted and the system powered off prior to board removal. See Chapter 11, Powering Off and On , then "Removing a Board from a Powered-Off System".
Ensure that the board has been disabled by the ASR software. See "Hot-Plug Feature".
Once disabled by ASR, one of two results occurs:
The three LEDs on the board are not lit (board has no power).
The outer two green LEDs are not lit and the middle yellow LED is lit (board is in low power mode).
System software operates such that the LED pattern described is the same for a board that is component side down (installed in front of card cage) or component side up (installed in rear of card cage).
Unfasten any cable connectors from the front panel and set them aside.
Label cables to identify them for reconnection later.
Use a Phillips #1 screwdriver to mechanically release the board from the system card cage.
Insert the screwdriver into each quarter-turn access slot (the slots are located on the left and right sides of the board front panel) and then turn a quarter turn so that the arrow points to the unlocked position (Figure 4-7).
Pull the ends of both extraction levers outward simultaneously to unseat the board centerplane connector from the centerplane receptacles (Figure 4-8).
If a board is not immediately replaced, a load board (Enterprise 6500 systems only) or a filler panel (Enterprise 4500 and 5500 systems only) must be installed in its place.