C7085-90921 Chapter 7 Troubleshooting 211
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.
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