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Preventive Maintenance
9-3
HP DesignJets 1050C and 1055CM Printers Service Manual
Cleaning the Overdrive
NOTE If ink is spilled on the Overdrive, remove the ink. 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:
WARNING Prevent water or other liquids from running onto electrical
components or circuits, or through openings in the module.
1 Perform the Overdrive Cleaning Utility ⇒ Page 4-37.
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
Overdrive surface while it is rotating. Thoroughly clean the
Overdrive surface. Also make sure that you clean the mark encoder
on the left side of the driver roller.
3 Press Enter when you have completed the cleaning procedure.
4 Allow the Overdrive to dry before loading media in the Printer.
Scheduled Maintenance
In some segments of the printer market, the customer tends to print
more than the maximum number of prints that the throughput
allows, exceeding by far the limit of the design. When this happens
the customer runs into print quality problems and continuous Printer
failures.
The purpose of scheduled preventive maintenance is to avoid these
failures - ensuring a good performance during all the product life.
Level of Printer Usage
Normal printer use means 7,000,000 Carriage Cycles. Under normal
usage conditions, it will be approximately 5 years before the printer
needs maintenance. If the printer is used more than the normal usage
conditions, then it will need maintenance service much more
frequently.
One of the EEROM counters is assigned to counting the number of
carriage cycles. When the printer exceeds this amount, the front