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HP-GL/2 palette: shows the color or grayscale definitions in the currently-selected color palette.
PostScript font list: lists the PostScript fonts installed in the printer (PostScript printers only).
Image diagnostics: helps you to solve print quality problems. See
How do I... (Image Diagnostics
Print topics) on page 117.
Service information: provides information needed by service engineers.
Preventive maintenance
During the life of your printer, components that are used constantly can wear out with time and use.
To avoid these components being so worn that the printer breaks down, the printer keeps track of the
number of cycles the printer carriage makes across the axis of the printer and on the total quantity of
ink printed.
The printer uses this number to advise you of the need for preventive maintenance, displaying one of
the following messages on the front panel:
Maintenance #1 required
Maintenance #2 required
These messages mean that some components are nearing the end of their lives. You can continue
printing for quite some time, depending on your use of the printer. However it is strongly recommended
that you contact your customer service representative and arrange for a preventive maintenance on-
site visit. The service engineer can then replace the worn parts, which will prolong the life of the printer
for a further period.
The benefits of arranging a service engineer's visit when the front panel displays these messages are
two-fold:
The printer components can be replaced at a time that is convenient for you and so will not disturb
your daily workflow.
When the service engineer performs a preventive maintenance visit he will replace several parts
at once. This will avoid the need for repeat visits.
ENWW Preventive maintenance 193
About printer
203


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