AT&T DEFINITY 555-230-223 - Manual (Page 132)

Maintenance
MT2ST/N50 Tape Drive
The MT2ST/N50 3.5-inch SCSI tape drive is used on the DEFINITY LAN
Gateway system. Figure 4-8 shows the jumper connections that select options to
allow the drive to be accessed.
1
2
1 2 3 4
49
50
J1 Interface
Connector
(PCBA CL)
RA1 (under)
Strap
PCBA CL
RA2 (under)
J2 Power Supply
Connector
(PCBA CL)
S3 S2 S1 S0
Figure 4-8. M2ST/N50 Tape Drive Jumpers
The tape drive connections are set to the following specifications for the
DEFINITY LAN Gateway system.
Interface terminators RA1 and RA2 are not installed. Verify that they are
not present when a tape drive is shipped.
When jumper S3 is installed, it checks the SCSI bus parity. The drive will
operate with or without the jumper, but it is recommended the jumper be
installed.
The system identifies the tape drive as SCSI tape drive 1. For this
configuration,
SO must be removed, and S1 and S2 must be installed.
Other jumpers: Any other jumpers on this disk drive should be left alone.
Do not remove or change any jumpers not previously specified.
Issue 1 January 1996 4-17