HP Designjet 5000 Service Manual - Page 366

Preventive Maintenance Introduction This chapter explains how to perform service preventive maintenance procedures when they are required, and routine maintenance procedures that are recommended when Service Engineers perform Removal and Installation procedures. NOTE Service Preventive Maintenance Maintenance information can be obtained from Printer Setup/ Utilities/Service Configuration Print. As the frequency of service maintenance depends on how the Printer is used, there are no specific preventive maintenance intervals. For Service Maintenance purposes, Printer usage is defined by the number of cycles performed by the following components: n Carriage - movement and flex circuit Printhead insertions. n Tubes - movement and Tubes septum Printhead insertions. The number of cycles performed by a part depends on the print mode and the total length of prints performed by the Printer. For example, if Max. Quality print mode is used on Glossy media, the Printer performs 10 passes per inch, whereas Max. Speed on Coated media only requires 1 pass per inch. There are two different EEROM counters for the number of Carriage cycles and Tubes cycles. For information on Carriage and Tubes usage limits see Warning/Stop Triggers on Page 9-3. There is also an EEROM counter for the number of Printhead insertions in the Carriage. If there are Printhead insertion problems, or Ink Supplies Error Codes occur frequently (see Page 3-12), the Service Configuration Print (available in Printer Setup/Utilities/Test Prints), indicates usage limits to see whether excessive wear is the likely cause of the problem. Printhead insertion limits are: n 600 Carriage flex circuit insertions. n 350 Tubes septum insertions. There are no warning triggers when the Printhead insertion limits are reached. 9-2 HP DesignJet 5000 Series Printers Service Manual