Dell OptiPlex N Troubleshooting Manual page 87

18. Turn off the system, including any attached
peripherals, and disconnect all the AC power
cables from their power sources. Also, disconnect
any telephone or telecommunication lines from
the computer. Remove the computer cover if it is
not already removed.
19. Remove a drive carrier from its bay, and check all
cable connections between the drive and the drive
carrier. Also make sure that the SCSI ID cable is
oriented correctly and is installed on the correct
set of pins on the drive. Reinstall the drive carrier
in its bay. Repeat this procedure for all the other
drive carriers. Reconnect the system to AC
power, and turn it on.
See your system documentation for information on
cable connections and the correct installation of the
SCSI ID cable.
Is the problem resolved?
Yes. A drive carrier was not firmly seated in its con-
nector on the SCSI backplane board. You have fixed
the problem.
No. Go to step 21.
20. Turn off the system, including any attached
peripherals, and disconnect all the AC power
cables from their power sources.
21. 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.
See your system documentation for the location of
the cable connectors on the SCSI backplane board.
Are the cables firmly connected?
Yes. Go to step 24.
No. Go to step 23.
22. Reseat the cable connectors, reconnect the com-
puter and peripherals to their AC power sources,
and turn them on.
Is the problem resolved?
Yes. The cable connections were faulty. You have
fixed the problem.
No. Go to step 24.
23. Turn off the system, including any attached
peripherals, and disconnect all the AC power
cables from their power sources.
24. Replace the SCSI cable connecting the SCSI
backplane board to the SCSI host adapter.
Reconnect the system to AC power, and turn it
on.
Is the problem resolved?
Yes. The SCSI cable was faulty. You have fixed the
problem.
No. Go to step 26.
25. Partition and logically format the hard-disk
drive. If possible, restore your files to the drive.
To partition and logically format the drive, see the
documentation for the computer's operating system.
Is the problem resolved?
Yes. The hard-disk drive format was corrupted. You
have fixed the problem.
No. Go to step 26.
26. See Chapter 7, "Getting Help," for instructions
on obtaining technical assistance.
Checking Inside Your Computer 6-19