
Printer Maintenance Overview Cleaning the Printer and Accessories Cleaning Spilled Toner Preventative Maintenance Reset Maintenance Count Expected Life of Components, The troubleshooting process is a systematic approach that addresses the major problems first, and then other problems as you identify the causes for printer malfunctions and errors. The Troubleshooting Flowchart on page 7-4 illustrates the major steps for troubleshooting
the printing system. Each heading depicts a major troubleshooting step. A “yes” answer to the questions allows you to proceed to the next major step. A “no” answer indicates that additional testing is needed. Proceed to the referenced location and follow the directions for that area. After completing the additional testing, proceed to the next major step. Toubleshooting flowchart, system diagram, wiring diagram, Wiring Diagram (HP LaserJet 4000 T/4000TN). Printer controller PCA. Fuser paper delivery sensor 1. Control Panel. Maintenance guide.

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