Users Guide

Troubleshooting a tape backup unit
Prerequisites
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow
the safety instructions that are shipped with your product.
Steps
1. Use a different tape cartridge.
2. Ensure that the device drivers for the tape backup unit are installed and are configured correctly. See your tape drive documentation
for more information about device drivers.
3. Reinstall the tape-backup software as instructed in the tape-backup software documentation.
4. Ensure that the interface cable of the tape drive is connected to the external port on the controller card.
5. Perform the following steps to ensure that the controller card is properly installed:
a. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
b. Remove the system cover.
c. Reseat the controller card in the expansion card slot.
d. Install the system cover.
e. Turn on the system and attached peripherals.
6. Run the appropriate diagnostic test. For more information, see the Using system diagnostics.
Next steps
If you cannot resolve the problem, see the Getting help section.
Troubleshooting no power issues
Prerequisites
Ensure all power supplies are firmly seated, power cables are connected, and both power supplies are operating.
Steps
1. Swap the AC power cable with a known-good power cable.
If the system works with a known-good AC power cable, replace the power cable.
2. Check the status of the power indicator on the power supply unit (PSU).
• If the power indicator is lit Green, reseat the PSU. If this does not fix the issue, test the system with a good PSU.
• If the power indicator is lit Amber, this indicates a PSU fault condition. Replace the PSU with a good PSU and check the indicator
status.
• If the issue is resolved, consider replacing the PSU.
Troubleshooting power supply units
Prerequisites
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow
the safety instructions that are shipped with your product.
The following sections provide information on troubleshooting power source and power supply units problems.
Troubleshooting hardware issues
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