Sounds like it may be the cleaning light (far right)
You need to use a cleaning tape in the drive (they do expire after either 20 or 40 uses so use a brand new one to be sure)
That should clear the light. If it comes back on after another backup then try using the cleaning tape again and then a brand new tape for the backup. If the light comes on again then the drive will need to go for repair as the head is knackered.
Try www.tape-drive-repair.com for this as they are pretty good price wise and also offer a 1 years warranty on their drives and repairs
Answers & Comments
Sounds like it may be the cleaning light (far right)
You need to use a cleaning tape in the drive (they do expire after either 20 or 40 uses so use a brand new one to be sure)
That should clear the light. If it comes back on after another backup then try using the cleaning tape again and then a brand new tape for the backup.
If the light comes on again then the drive will need to go for repair as the head is knackered.
Try www.tape-drive-repair.com for this as they are pretty good price wise and also offer a 1 years warranty on their drives and repairs
Thats the cleaning light insert the cleaning tape and let it do its thing.Once this is done you should be fine