9-5
Preventive Maintenance
HP Designjet 4000 Printer Series Service Manual
Applying Oil to the Overdrive
Occasionally, it maybe necessary to oil the Overdrive in order to stop the
rollers from squeaking:
1 Open the Window.
2 There are small holes in the Center Platen beside some of the rollers.
3 A bottle of oil is supplied with the Maintenance Kit. Insert the pointed end of
the bottle into each hole in turn, and put three drops into each.
4 Be very careful not to spill any oil onto the Center Platen.
5 If there is oil on the Center Platen, wipe it away with the cloth supplied with
the Maintenance Kit.
6 Close the Window.
Lubricating the Carriage Assembly
The Carriage Assembly needs to be lubricated occasionally (at least once a
year) so that it can slide easily along the Slider Rod.
1 Using the Front Panel, in the Printheads menu, select "Replace printheads
now". The Carriage Assembly will move to the center of the Printer.
2 Open the Window and apply a few drops of oil (bottle of oil can be found
in the Maintenance Kit) to the pads on either side of the Carriage Assembly.
3 Apply a few drops of oil directly to the Slider Rod on either side of the
Carriage Assembly.
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