HP SureStore Optical Jukebox 160ex Service Manual page 147

#3, #2, and #5).
Connect the drive power cables last, over the SCSI cable (see #2 on
Figure 5-10).
6. Slide the communication slide switch over to the right for both drives
to signal the jukebox that drive replacement is complete (see #1 on
Figure 5-10).
The jukebox applies power to the drives and informs the running
application that the drives are ready to go online.
7. Replace the right-side access panel.
Chapter 5
Removal and Replacement
Replacing an Optical Drive — Jukebox Online
5-25