Xerox 2135DX - Phaser Color Laser Printer, Service Manual

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Service Guide 31
Print engine troubleshooting
This topic is a step-by-step procedure for systematically verifying particular
aspects of the printer's operation. Following this procedure should lead to the
cause of a printer's failure.
Testing the print engine controller board
1. If the printer does not power up, or does not initialize, or the printer
initializes but the motors do not run properly, go to the later topic,
“Verifying power supply operation” on page 32.
2. Observe that the
Ready
message is displayed on the front panel. If it is not,
go to the later topic “Verifying power supply operation” on page 32.
3. To ensure the print engine operates correctly, print one of its internal test
pages from its diagnostic menu as explained in the topic “Test printing” on
page 71.
If the printer prints a test print, then the printer's print engine is working
correctly. Proceed with the next topic, “Verifying printer operation by using its
self-test print” on page 32.
If the printer does not make the test print, then a problem exists with the print
engine. Proceed with the topic, “Verifying power supply operation” on page 32.