HP 6000 330s Owner's Manual page 109

HP Series 6000
Models 330S and 660S
Make sure the address switch on the rewritable optical
controller PCA is set to a unique SCSI address relative
to the other devices on the SCSI bus. The mass storage
system will not function properly if two devices in the mass
storage system have the same SCSI address.
Switches 1 through 5 should
stay
in the OFF (down)
position. If any of the switches 1 through 5 are set to the
ON (up) position, the mode of operation of the rewritable
optical disk drive will not be supported.
To set the address switch to a different address before
installing the rewritable optical controller PCA into the
mass storage system, perform the following steps:
1. Verify that switches 1 through 5 are set to the OFF
(down) position.
2. Set switches 6 through 8 to the ON (up) or OFF (down)
position for the desired address (refer to Table 3-3).
Rewritable Optical Disk Drive 3-25