Chapter 4: Operations
Diagnostic and Maintenance Functions
54 Quantum LTO-9 HH SAS User’s Guide
1 Make sure that the host interface wrap plug is connected to the
host interface connector at the rear of the drive.
• Connect the wrap plug to the SAS port to be tested.
2 Place the drive in Maintenance Mode. For instructions, see Entering
Maintenance Mode on page 47.
3 Press the Unload button once per second until 6 appears in the SCD.
To test the SAS interface on the drive:
a Index through the Maintenance Mode options until 6 is
displayed on the SCD.
b Press and hold the Unload button for three seconds to select
Function Code 6.
c After selecting Function Code 6 the SCD will display option 6 -
1.
d Press the Unload button within five seconds to make a different
selection. If no other selection is made, the drive will perform
option 6 - 1.
4 Continue to press the Unload button once per second to cycle
through the following functions:
• 6 - 1: test the primary SAS port
• 6 - 2: test the secondary SAS port
• 6 - 3: test both primary and secondary SAS ports at the same
time (requires a wrap plug in both ports)
• 6 - 0: exit
5 Press and hold the Unload button for three or more seconds, then
release it to select one of the above functions. The drive
automatically starts the test. If you cycle past the desired code,
press the Unload button once per second until the code reappears.
6 The SCD will display a flashing 6 during the test.
• If no error is detected, the diagnostic will loop and begin again.
To stop the loop, press the Unload button for one second and
release. When the diagnostic ends, 0 temporarily appears in the
SCD, and the tape drive exits Maintenance Mode.
• If an error is detected, the Fault light flashes and the drive posts
an error code to the SCD. To determine the error, locate the
code in Appendix A,
Error Codes and Messages. To clear the
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