In the Definity Audix that counts how much the tape is used. After a specific amount it will raise the error 6
This is what the manual says..
Description:
Dirty tape heads. A
count of write-passes is
written on a file on the
disk. When the count
reaches 6, an alarm is
raised.
Alarm level:
WARNING
Error log resource:
TAPE
Repair action:
Clean heads as described in this
chapter. Invoke the TEST TAPE
CLEAN screen.
On-Site Task: Tape Head Cleaning
The tape drive requires manual cleaning of its tape heads every three months, or
after every 100 passes. A minor alarm is raised when cleaning is required. Use
the provided kit which includes a cleaning tape cartridge, cleaning sticks, and
cleaning solution.
Procedure
1. Invoke REMOVE TAPE and remove the working tape. Be sure the yellow
LED on the the tape drive becomes unlit.
2. Insert the cleaning tape cartridge into the drive, pushing it with your finger
all the way into the streamer. Do not lock it into place by turning the front
lever clockwise.
3. Invoke TEST TAPE CLEAN.
4. Dip the pad of the cleaning stick into the cleaning solution and insert into
the guide hole at the bottom of the tape. Ensure that the blue side of the
pad touches the head (it will face the LED of the streamer).
5. Gently pressing the pad against the head, run the stick back and forth
through the guide hole 10 times.
6. Turn the stick so the white side of the pad touches the head. Run the stick
back and forth 5 to 10 times.
7. Using the dry white pad of another cleaning stick, perform the same
operation 5 to 10 times.
8. Remove the cleaning tape and allow the head to dry for a minute before
reinserting the working tape.
9. Invoke ADD TAPE. This clears the alarm and loads the cartridge.
Hope this helps..
John