96 Library Installation and CRU Replacement
• If you plan to stack the 5U Library Control Module at the top of the library, and if a 9U Library
Expansion Module will be located below it, remove the 5U Library Control Module’s bottom cover
plate and the 9U Library Expansion Module top plate.
• If you plan to stack the 5U Library Control Module between 9U Library Expansion Modules, remove
both the top and bottom plates of the 5U Library Control Module. Also remove the top plate of the
9U Library Expansion Module located below the 5U Library Control Module and the bottom plate of
the 9U Library Expansion Module located above the 5U Library Control Module.
• If you plan to stack the 5U Library Control Module at the bottom of the library, and if a 9U Library
Expansion Module will be located above it, remove the 5U Library Control Module’s top plate and
the 9U Library Expansion Module’s bottom plate.
Replacing the 9U Expansion Module
1 Remove all tape drives from the 9U Library Expansion Module that you are adding. See Adding,
Removing, and Replacing Tape Drives on page 127 for instructions on removing tape drives.
2 Remove the power supplies from the 9U Expansion Module that you are adding. See Adding,
Removing, and Replacing Power Supplies on page 106 for instructions on removing power supplies.
3 Open the 9U Expansion Module’s access door and raise the guide pin by pulling it up and turning it
slightly, as if it were a screw. Otherwise, the guide pin may scratch the front doors of the module on
which you are stacking it.