Chapter 5 Diagnostics
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NOTE: If the desired print quality is not attained after cleaning the
printer, the chargers may need to be replaced.
Diagnostics
The printer includes diagnostic circuits and software to aid in the
discovery, prevention, and correction of system problems and
failures.The printer has both offline and on-line diagnostics.

Offline Diagnostics

Most of the software diagnostics are executed when the printer is
powered on, and when you request diagnostic information through
the control panel.
Each time the printer is powered on, it performs a power-on self
test. There is no printout during this test. However, the printer
displays any errors on the control panel, accompanied by an
audible alarm.
You may request the following diagnostic and configuration
information via the control panel, through various menus:
•Test Print: Prints various predefined graphics pages to verify
that the printer can print properly on the entire page (Test Print
menu).
•Print Statistics: Displays all accumulated print engine st atistics,
such as number of pages printed and power-on time. This is a
display-only feature; there is no printout (Print Statistics menu).
•Print Configuration: Prints all current configuration parameters
in the printer, including print statistics (Config. Control menu).

Online Diagnostics

When it is online, the printer senses and reports problems or
conditions as they arise. When an error is detected, the printer
halts, lights the appropriate LED, and displays the proper error
message on the control panel. The error message remains
displayed until the error condition is cleared and you press CL EAR.