9-3
Preventive Maintenance
HP Designjet 4000 Printer Series Service Manual
Cleaning the Drive Roller and Overdrive
If ink is spilled on the Overdrive, remove the ink immediately.
Due to the ink's reflectance, ink on the Overdrive can disrupt
the Printer's edge-sensing function. To remove any ink from
the Overdrive, perform the following procedure:
Prevent water or other liquids from running onto electrical
components or circuits, or through openings in the Electronics
Module.
1 Perform the Turn Drive Roller Utility (Refer to Page 4-69).
2
Open the window and apply any common household cleaning solution
(water based only) to a soft, lint-free rag and apply it to the Drive Roller and
Overdrive surface while it is rotating. Make sure that you thoroughly clean the
Drive Roller and Overdrive surface.
3 Press Enter when you have completed the cleaning procedure.
4 Allow the Drive Roller to dry before loading media in to the Printer.
Cleaning the Center Platen
If wide paper is used to print after narrower paper is used for
some time, you may find that the left hand side of the Center
Platen has become dirty and will leave marks on the back of
the paper if not cleaned.
It is recommended to clean the Center Platen on a regular basis (at least
every few months or when required) as follows:
1 Unload any media loaded from the Printer.
2 Open the Window and with a dry brush remove ink deposits from the Cutter
Groove and the Center Platen surface.
Cutter Groove Center Platen Surface
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