HP 1050c Service Manual - Page 285

Preventive Maintenance NOTE WARNING Cleaning the Overdrive 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 edgesensing 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 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 HP DesignJets 1050C and 1055CM Printers Service Manual 9-3