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Dell PowerEdge 2900 with IBM Ultrium DTO III installed. Tape drive ejects and accepts tapes and backup software successfully writes to tape but I have a red 3 on the LED of the tape unit and a flashing amber light. I have tried the online support at Dell and IBM but cannot find any article - even Google reveals nothing. Any ideas on how to diagnose the issue - tape drive unit appears in in device manager although in other devices I do have an unknown - this could be something to do with it - or perhaps not?

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Placed LTO unit in maintenance mode (eject tape and press eject button 3 times in two seconds) and then took the LTO unit out of maintenance mode (with unit empty, press eject and hold for 3 seconds).

The display screen reset and the light became green once more.

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