302 Troubleshooting ENWW
Introduction
This troubleshooting chapter assumes the reader has a basic understanding of the color laser
printing process. Explanations of each mechanical assembly, printer system, and the basic theory
of 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 for which the 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 suggests methods for solving print quality 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. It also 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.
● Diagnostics provides instructions on how to access and use the diagnostic tools incorporated
into the printer.
● Service menu provides procedures for entering the service menu and performing service-
oriented tasks. These tasks include counts for entering the serial number, service ID, transfer
unit maintenance, fuser maintenance, color page, total page, and clearing the event log.
● Diagrams provides graphical locations and tables for the printer’s internal assemblies and
sensors.
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