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Selecting a Diagnostic or Maintenance Function
To select a diagnostic or maintenance function:
1. Make sure that no cartridge is in the drive.
2. Within a 1-second interval, press the unload button three times. The status light
becomes solid amber, which means that the drive is in maintenance mode.
Note: If a cartridge is in the drive, it will eject the first time that you press the
unload button and the drive will not be placed in maintenance mode. To
continue placing the drive in maintenance mode, remove the cartridge
and repeat this step.
3. In Table 7 on page 29, locate the function that you want and its code.
4. Press the unload button once per second until the code that you want appears
in the single-character display.
Note: If you cycle past the desired code, press the unload button once per
second until the code redisplays.
5. Press and hold the unload button for 3 seconds. The drive performs the function
that you selected.
v If the diagnostic or function requires you to insert a tape cartridge, C displays.
Within 60 seconds, insert a cartridge or the tape drive exits maintenance
mode.
v If an invalid or write-protected tape cartridge is inserted, 7 displays. The tape
drive unloads the cartridge and exits maintenance mode.
v If the function completes successfully, 0 temporarily displays, and the drive
exits maintenance mode.
Note: Certain diagnostics loop and may need to be ended. To end a looping
diagnostic, press the unload button. The drive acknowledges the
request by slowing the length of time that the currently displayed
character flashes on the single-character display (from twice per
second to once per second). When the loop ends, 0 temporarily
displays and the drive exits maintenance mode.
v If the function fails, the status light flashes amber, an error code displays, and
the drive exits maintenance mode. To resolve the error, refer to Table 12 on
page 53.
v To reset an error, cycle (remove, then reapply) power to the tape drive.
28 IBM Ultrium Internal Tape Drive
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