HP Indigo 30000 CA493-00130 Rev - Page 2

Table of contents 1 Overview ...1 Prerequisites ...1 2 Theory of operation ...2 Unit location and function ...2 Unit components ...2 Unit operation...3 3 Procedures ...4 Replacing the charge roller rails and/or engage mechanisms 4 Replacing the carbon brushes...7 Replacing the carbon brush housing...9 Replacing the Jump-Over-Seam (JOS) motor ...12 4 Calibrations ...19 5 Troubleshooting...20 Troubleshooting in Print Care...20 Troubleshooting table ...21 Troubleshooting the charge roller leveling failure - mechanical problem 22 Charge roller not secured properly...26 Maintenance routines ...29 Appendix A Revision history and confidentiality notice ...30 Revision history ...30 Printing instructions ...30 Confidentiality notice...31 ii