Xerox 2135DT Service Guide - Page 44
Print engine troubleshooting
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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. Service Guide 31