Diagnostic resources
Engine test
The engine test verifies that the print engine is functioning correctly. During the test, the printer prints
horizontal lines down the entire printable area of a page. The formatter is bypassed during the
engine test.
NOTE The formatter must be connected to the ECU to perform an engine test.
1. Remove the left side cover.
2. Press the engine-test switch. A single test page prints.
Figure 7-1 Location of engine-test switch
Continuous self-test
The continuous self-test puts the device into a continuous printing mode without having to send jobs
to it.
1. Turn off the printer.
2. Press and hold the Go button.
3. Turn on the printer and continue to hold the Go button for approximately 20 seconds, but no
longer than 30 seconds, until the Attention and Ready lights illuminate.
4. Release the Go button.
NOTE If the Attention, Ready, and Go lights illuminate before you release the Go
button, start again at step 1.
5. The Ready light starts blinking, indicating that the device is performing a continuous self-test.
To terminate the continuous self-test, press the Cancel button.
172 Chapter 7 Problem solving ENWW
For more information on the LaserJet P2015 Visit www.PrinterSupplies.com 800-551-1943
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