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Checking Inside the Computer 7-19
SCSI Hard-Disk Drive Troubleshooting
Use the following procedure to troubleshoot a hard-disk
drive problem.
1. If the on-board SCSI host adapter is being used to
control the SCSI backplane board, restart the
system and press <
F2
> to enter the System Setup
program.
Is the
ON-BOARD SCSI A
category set to
ENABLED
?
Ye s . Go to step 3.
No. Go to step 2.
2. Change the
ON-BOARD SCSI A
category to
ENABLED
,
and reboot the system.
Is the problem resolved?
Ye s . You have fixed the problem.
No. Go to step 3.
3. Verify that the SCSI device drivers are installed
and configured correctly.
See Chapter 3, “Installing and Configuring SCSI
Drivers,” in the system User’s Guide to determine
which drivers are required and how they should be
installed and configured.
Are the required SCSI device drivers installed and
configured correctly?
Ye s . Go to step 5.
No. Go to step 4.
4. Reinstall and/or reconfigure the required SCSI
device drivers. Then reboot the system.
Is the problem resolved?
Ye s . You have fixed the problem.
No. Go to step 5.
5. Remove the drive carrier from its bay, and check
the cable connections between the drive and the
drive carrier. Reinstall the drive.
Is the problem resolved?
Ye s . The drive carrier was not firmly seated in the
connector on the SCSI backplane board, or the cable
in the drive carrier was installed incorrectly. You
have fixed the problem.
No. Go to step 6.
6. Remove the drive carrier and install it in another
drive bay.
Is the problem resolved?
Ye s . The SCSI backplane board has a defective
connector. See Chapter 11, “Getting Help,” for
instructions on obtaining technical assistance.
No. Go to step 7.
7. Remove the computer covers.
8. Check the SCSI cable connections to the SCSI
backplane board and to the SCSI host adapter.
Check the DC power cable connection to the
SCSI backplane board.
The SCSI cable may be connected to the SCSI host
adapter on the system board, or to a SCSI host
adapter card in an expansion slot. See Chapter 10,
“Installing Drives in the Internal Bays,” for the loca-
tion of the cable connectors on the SCSI backplane
board and the SCSI host adapter.
Are the cables firmly connected?
Ye s . Go to step 10.
No. Go to step 9.
CAUTION: This troubleshooting procedure can
destroy data stored on the hard-disk drive. Before
you proceed, make sure you have backed up all
the files on the hard-disk drive.
CAUTION: See “Protecting Against Electro-
static Discharge” in the safety instructions at
the front of this guide.