If your library has a redundant power supply, you can replace the primary power
supply without powering OFF the library. If your library does not have a
redundant power supply installed, the empty slot will be covered by a metal plate.
1 Handle 3 Power cord receptacle
2 Thumb screws 4 Power switch
Removing a Primary Power Supply
1. Perform “Preparing a Library or Library Module for Repairs” on page 8-4.
Note: It is not necessary to power off the library if there is a redundant power
supply installed.
2. Unplug each end of the power cord in the proper sequence.
Attention: First, disconnect the power cord from the power source. Then,
disconnect the power cord from the power supply receptacle (3 in
Figure 8-54).
3. Loosen the two thumb screws (2 in Figure 8-54) by turning them
counterclockwise.
4. Grasp the handle (1 in Figure 8-54) and slowly pull the power supply toward
you, while supporting it from underneath.
5. Install a metal cover plate over the vacant power supply slot if you are not
immediately installing a replacement.
a66mi022
4
2
1
3
Figure 8-54. Power Supply
Chapter 8. Add, Check, Adjust, Remove, and Replace Procedures 8-53
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