Replace unsupported imaging unit [32.xy]Remove the imaging unit, and then install a supported one to clear the message and continue printing. For moreinformation, see the instruction sheet that came with the supply or see the “Replacing supplies” section of the User’sGuide.Note: If you do not have a replacement imaging unit, then see the “Ordering supplies” section of the User’s Guide orvisit our Web site.Too many trays. Remove some. [58]1 Turn off the printer.2 Unplug the power cord from the electrical outlet.3 Remove the extra trays.4 Connect the power cord to the electrical outlet.5 Turn the printer back on.Solving printer problems• “Basic printer problems” on page 116• “Option problems” on page 118• “Paper feed problems” on page 120Basic printer problemsThe printer is not respondingAction Yes NoStep 1Make sure the printer is turned on.Is the printer turned on?Go to step 2. Turn on the printer.Step 2Check if the printer is in Sleep mode or Hibernate mode.Is the printer in Sleep mode or Hibernate mode?Press the Sleep buttonto wake the printerfrom Sleep mode orHibernate mode.Go to step 3.Step 3Check if one end of the power cord is plugged into the printer and theother to a properly grounded electrical outlet.Is the power cord plugged into the printer and a properly groundedelectrical outlet?Go to step 4. Plug one end of thepower cord into theprinter and the other toa properly groundedelectrical outlet.Troubleshooting 116