a. Remove the formatter.
b. Use a small pointed object to depress the test-page switch located on the rear of the printer.
NOTE: The test page can only use Tray 2 as the paper source, so make sure that paper is loaded
in Tray 2.
c. If the engine test page prints, the print engine is operating normally (a failed engine test print page
does not necessarily indicate that the print engine or DC controller is defective).
d. Use the control-panel diagnostics to test the control panel. See the control panel checks section in
the printer Troubleshooting Manual. If the error persists, proceed to step 8.
8. If the print engine appears to be correctly operating (the engine test page successfully printed) and the
control panel is still blank, replace the power supply.
9. If after replacing the power supply normal startup noises and lights are still not present, replace the DC
controller.
112 Chapter 2 Solve problems ENWW
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