Figure 12–4 Jumper Legend in Illustrations
Checking and Setting SCSI Jumpers
Verify that the SCSI (Small Computer Systems Interface) device ID jumper setting is
correct before you install a hard disk drive. Each SCSI device in your system needs a
specific and unique SCSI ID number. When you set the SCSI Device ID jumpers, each
drive is automatically assigned a SCSI Device ID number. The SCSI device ID jumper
of drive 0 must be set at 3. The SCSI device ID jumper of drive 1 must be set at 1.
See Table 12–1.
TABLE 12–1 SCSI Drive Jumper Settings and Addresses
Drive Location Target ID Jumper Settings SCSI Address
Position 0 A0 – Installed
A1 – Installed
A2 – Not installed
3
Position 1 A0 – Installed
A1 – Not installed
A2 – Not installed
1
424-Mbyte Jumper Settings
To verify the SCSI ID jumpers:
1. Make sure that the drive is on an antistatic surface (either an antistatic mat or
the antistatic bag the drive was shipped in).
2. Compare the SCSI device ID and configuration jumper settings to Figure 12–5.
Set the jumper settings to match Figure 12–5 using needlenose pliers.
124
SPARCstation 10 Service Manual ♦ Revision A, July 1993
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