Apple Workgroup Server 9150/120 - Manual (Page 78)

Status lights
Located next to the tape drive opening are two lights that inform you of the
status of tape operations. The light on the left is the tape light, and the light on
the right is the clean light. A solid green tape light indicates normal operation;
a solid amber clean light indicates a warning condition. A flashing green tape
light indicates activity between the tape drive and the SCSI bus. A flashing
amber clean light indicates that the tape in the drive is worn or the tape-drive
head needs to be cleaned.
The following table lists all the possible meanings of the status lights.
Tape light Clean light
(left side) (right side) Meaning
Normal operation
Flash green* Off Cassette loading or unloading, or
self-test in progress
Fast flash green † Off Cassette loaded/read or write activity
Green Off Cassette loading/drive online
Error states
Any Flash amber* Media wear (caution), or clean required
Any Amber Error condition
*Flash means the light flashes 1 / 2 second on, 1 / 2 second off.
†
Fast flash means the light flashes 1 / 4 second on, 1 / 4 second off.
The caution signal
If your tape drive detects problems, it displays a caution signal: the clean light
flashes amber. You can clear the caution signal by ejecting the cassette.
The caution signal may be caused by dirty tape-drive heads, so if this signal
appears, clean the heads and insert the tape again. (Head-cleaning instructions
are given in “Cleaning the Tape-Drive Heads,” later in this chapter.) The caution
signal may also indicate a worn-out tape. If the tape is old or worn, you should
copy its data to a new tape and discard it. If you’re trying to restore data from
a worn tape and the caution signal appears, clean the tape-drive heads, then try
the restore operation again.
62 Chapter 5 / Using a DAT Drive and Tape Cassettes