HP Designjet 4000 Service Manual - Page 369
Applying Oil to the Overdrive, Lubricating the Carriage Assembly, Close the Window. - replace printhead
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Preventive Maintenance 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. hp designjet 4000 series printer service manual 9-5