Resolving Operating Problems; Correcting Intermittent Failures - Compaq AIT 35 LVD Reference Manual

Resolving Operating Problems

If the AIT 35 LVD drive worked previously but now does not, try the following:
1. Clean the drive heads.
2. Run the tape drive option of Compaq Diagnostics.
3. Replace the tape.
4. If multiple tape drives are used, ensure that each tape drive has a unique
SCSI ID.
5. Your drive should be shipped from the factory with all terminators removed.
Verify that all terminators have been removed.
6. Determine what has changed in the system since the last tape backup.
a. If the system configuration has been changed, try removing the change to
see if it affects the tape backup system.
b. If a board or option has been added, check its DMA, IRQ, and port
address settings for conflicts. Try removing the board or option.
c. If a SCSI device has been added, check for SCSI ID conflicts and proper
termination.
7. Check the controller, signal cable, and power cable connections to ensure
that they are properly seated.
8. Replace the cables, tape drive, and finally, the controller.

Correcting Intermittent Failures

If the AIT 35 LVD drive works only intermittently:
1. Clean the tape drive heads.
2. Run the Compaq Diagnostics Utility and the tape drive Diagnostics Utility.
Follow the steps listed in the Installation section of this chapter for the
Compaq and tape diagnostics programs.
3. If the tape backup procedure starts correctly but then stops with an error:
a. Use TEST to check the tape drive firmware revision level.
b. If the error occurs on the same file or directory each time, correct any
errors that you find with the file system by running a file system utility
such as SCANDISK.EXE. If the problem continues with a particular file
or directory, remove that file or directory from the backup list.
Troubleshooting Intel-based Computers 7-5