DEC TLZ09 Owner's Manual page 42

Preventive Maintenance and Problem Solving
________________________ Caution ___________________________
Never attempt to clean the heads in a manner other than described. Doing so
will void the product warranty.
___________________________________________________________
To clean the heads, use the head cleaning cassette as follows:
1. Apply power to the drive by pressing the power switch to the ON position on the
system external storage expander box, the tabletop drive unit, or the system enclosure
for embedded drives.
2. Insert the head cleaning cassette (PN TLZ04-HA) into the drive. For the autoloaders,
this requires selecting the slot containing the cleaning cassette and loading it into the
embedded drive.
3. With the head cleaning cassette inserted, the drive automatically executes head
cleaning. The drive ejects the head cleaning cassette after approximately 30 seconds if
head cleaning is successful. The autoloaders eject the magazine if the cleaning
cassette is the only cassette in the magazine and is in slot 8.
4. On the card enclosed with the head cleaning cassette, record every time you use the
cassette.
Under normal conditions, the head cleaning cassette is used for about 25 cleanings.
Additional cassettes are available from your DIGITAL sales representative or
DECdirect.
If the number of cleaning cycles of a particular head cleaning cassette has expired, a
device dependent indication will be given to the user. For the standalone drives, the
drive will signal the user by flashing the Status LED while the Busy LED is off and
the Tape LED is on (see Table 5-1). Press the eject button to remove the cleaning
cassette, as the drive will not automatically eject an expired cleaning cartridge. No
cleaning action will have occurred.
For the TLZ9L autoloader, an error indicator (wrench) and the number 2 appears on
the TLZ9L LCD panel. For the TLZ1L autoloader, a "Cleaning Tape at EOM"
message appears in the display area of the TLZ1L LCD panel. In both cases, press the
eject button to eject the magazine so that the expired cleaning cassette can be replaced
with a new cleaning cassette. No cleaning action will have occurred.
6–2 DIGITAL TLZ09/TLZ10 Cassette Tape Drive and TLZ9L/TLZ1L Autoloader Owner's Manual