9-4 SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual • November 1993
9.1.2.1 Verifying the Jumper Settings
The SCSI ID jumpers must be set to SCSI address 3. This is the factory default
setting, but you should verify the jumper settings.
The location of the SCSI ID jumpers depends on the type of drive shipped with your
system.
FIGURE 9-2 through FIGURE 9-7 show the jumper locations and settings for the
various types of replacement drives. Note that only one of these illustrations applies
to your hard drive.
To verify the jumper settings on the hard drive:
1. Remove the replacement drive from its protective packaging and set it with the
component side up on the antistatic mat.
You now have access to the drive controller board.
2. Inspect the jumper settings.
a. Determine which illustration among
FIGURE 9-2 through FIGURE 9-7 matches your
drive.
b. Compare the jumper settings in the figure to the settings on your drive.
c. If the settings are not the same, change them to match the settings in the figure.
FIGURE 9-2 Jumper Settings for 207-Mbyte Drive With Jumpers on the Left-Hand Side
A0
A1
A2
WS enable
SCSI device
address
Power Data connector
connector
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