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Maintenance
Maintenance
To fit a new print head
You can buy a ready assembled ink cartridge
and print head and install it as shown in the
Setting Up section.
To fit a new ink cartridge
It is less expensive to simply replace the ink
cartridge. One print head should last for eight
ink cartridges.
• Open the printer cover.
1 Pull back the clip on
the side of the print
head to release the ink
cartridge and remove
it from the print head.
2 Remove the protective
film from the nozzle of the
new ink cartridge and push
it into the print head until it
clicks into place.
Close the printer cover.
The DF450 will automatically test and clean the
print nozzles, and then generate a test print-out
containing a graduated scale, graphic images
and text. Following the print-out, the display
will show
CHECK PRINT OUT.
If the graduated scale is uninterrupted and the
dark areas do not contain white lines, the print
quality is to be considered satisfactory. If not,
repeat the procedure.
• Press 1 if the test print is acceptable.
• Press 0 to repeat the test.
If the print head is still unsatisfactory after a
number of tests, replace the printhead.
1
2
The ink cartridge is located inside the print head.
The print head does not need to be removed while
changing the ink cartridge.