Introduction This troubleshooting chapter assumes the reader has a basic understanding of the color laser printing process. Explanations of each mechanical assembly, printer systems, and the basic theory operation are found in Chapter 5. Do not perform any of these troubleshooting processes without fully understanding the function of each mechanism. This chapter contains the following sections: Troubleshooting process includes a pre-troubleshooting checklist and a troubleshooting flowchart. These tools contain information about common printer errors that can inhibit proper operation or create print quality problems.
These tools also include recommendations for solving the cause of the error. Printer error troubleshooting explains each control panel display message and suggests recommendations for clearing the cause of each message. When the printer message indicates a failure whose root cause is not obvious, use the printer error troubleshooting section and the troubleshooting tools section found later in this chapter to solve the problem. Paper path troubleshooting provides techniques to solve feed problems. Explanations regarding print media checks, troubleshooting jams, and the differences between jams caused by media and those caused by the printer are discussed.
Image formation troubleshooting provides print samples to help identify print defects, and suggests methods for solving the problems. Interface troubleshooting provides techniques for isolating communication problems to the printer hardware, printer configuration, network configuration, or software application. Control panel troubleshooting provides procedures for printing a menu map from the printer control panel, and describes the control panel menus, the items within each menu, and the possible values for the menu items. Troubleshooting tools help isolate the cause of printer failures. This section includes explanations of the printer configuration page, and the event log.
The service mode section provides procedures for entering service mode and performing service-oriented tasks. These tasks include counts for entering the serial number, transfer maintenance, fuser maintenance, color page, total page, clearing the event log, and various printer tests. The diagnostics mode section provides instructions on how to access and use the diagnostic tools incorporated into the printer. Diagrams provides graphical locations and tables for the printer’s internal assemblies and sensors. C7085-90921 Chapter 7 Troubleshooting 211