Jumper Setting Description A2, A1, - These jumpers are used in A0 combination to determine the drive's SCSI ID [See table 2] Table 1
One of the requirements of the SCSI bus is that it be properly terminated. If more than one SCSI device is connected to the host, the last device on each end of the bus must be terminated. The Maverick disk drive utilizes two (2) Terminating Resistor packs, when installed these resistors enable termination on the SCSI bus. With the Terminating Resistor packs removed, bus termination is disabled.
At the factory, Quantum configures the Maverick 270/540S hard disk drive with termination enabled; that is, both resistor packs are installed. To disable termination, remove the Terminating Resistor packs.
SCSI-Bus Device Identification (A0 - A2) Jumpers
Used in combination, the jumper settings across pins A2, A1 and A0 determine the Maverick 270/540S hard disk drive's SCSI-bus device I.D. By default, Quantum configures the drive with a SCSI ID of 6; that is, with jumpers installed across the pins labeled A2 and A1, and no jumpers installed across pins labeled A0.
To assign a different SCSI ID, change the jumper settings as shown in Table 2.
A2 A1 A0 SCSI ID OFF OFF OFF 0 OFF OFF ON 1 OFF ON OFF 2 OFF ON ON 3 ON OFF OFF 4 ON OFF ON 5 ON ON OFF 6 ON ON ON 7 Table 2