Service manual

96022 Revision L 4-1
StorageTek Protected
4
FRU Removal and Replacement
This chapter contains procedures to replace the field replaceable units (FRUs). Refer to
your orderable parts catalog for the FRU part numbers.
Notes: The drive tray assembly is a customer replaceable unit (CRU), but is included in
this chapter in case you need to replace it. See “Drive Tray Assembly” on
page 4-53.
■ Preparation
Use a standard service tool kit for most procedures. Use a Torx/flat-blade screwdriver
for most screws.
Before beginning any procedure:
1. Read the instructions in “Safety” on page xix.
2. Make sure the customer has ended all jobs the robot is performing. If you are
replacing a drive, make sure the customer has ended all jobs the defective drive and
daisy-chained drives are performing.
3. Remove power from the library by placing the input line switches at the bottom of
the frame to the O position.