4-16 Chapter 4: System maintenance
4.1.6 Replacing the host board
Before installing the host board, you must take note of the following considerations:
• If you’re replacing the host board for an upgrade, a controller/host board downtime may occur.
• If you add or replace a host board, the rmware automatically restores the system to its factory
settings.
To replace the host board:
1. Shut down your system, unplug the power cords, then remove the controller. Wait for a minute for
the remaining electric current to dissipate.
NOTE: See section 4.1.3 Replacing the controller module for details.
2. Loosen the thumb screw that secures the host board to the controller then lift the host board gently.
Thumb screws
Host board
Host board
3. Orient the new/replacement host board to the controller’s guide pin, place it carefully, then tighten
the thumb screw to secure in place.
Guide pin
Thumb screw
4. Insert the controller back to the enclosure.
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