HP (Hewlett-Packard) 20-Feb Manual Do Utilizador

Chapter 5

Removing and Replacing the Power Supply 167

Ch

apter 5

Removing and Replacing the Power Supply 

A failing power supply on a 2/20 series library disables the library. A failing 

power supply on upper library levels results in a partial availability state. 

Note

Power cycling the library at this point will result in a hard error. If 

you want to continue using the library in its partially available 

state, do not power cycle. 

When the library is in a partial availability state, it is still functional, but is not 

in optimum configuration. When this occurs, the front panel will display 

Partly 

Available

, and the illuminated LED beneath the front panel display will be solid 

amber until the condition is resolved (see 

 on page 139). 

Removing the Power Supply

1.  Power off the library.
2.  Disconnect the power cord from the back of the power supply.
3.  Loosen the thumbscrews at the top and bottom of the power supply. If the 

thumbscrews are too tight to loosen by hand, loosen them with a 

screwdriver.

4.  Remove the stop bracket (if applicable). See 

5.  Remove the power supply with one hand by pulling outward (see 

 on page 171). Support the bottom of the power supply to avoid 

dropping the module.