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HP Color LaserJet 4500 and 4550 Series Printers - Printing Blank Pages
All printouts, including printer test pages, exit the printer blank. Verify internal printer tests, including a Configuration page and an engine test, print out blank. Also make sure the printer is not connected to the network before troubleshooting.
To print an engine test, simply push the button located in Figure 1.
Figure 1: Engine test button
There are several issues that can cause blank pages. Follow the troubleshooting steps in the order they appear in the document to isolate the cause.
Blank pages that match the number of pages requested can be caused by several issues. See below for details.
The laser beam is blocked or the laser shutter is not opening
Figure 2: Imaging drum
1 - Tab on the imaging drum cover
The imaging drum is not rotating
Figure 3: Drum drawer bushing
NOTE: If this gear is missing, the drum will not rotate causing blank pages.
The blue gear on the imaging drum is missing
If the blue gear is missing on the imaging drum (see Figure 4, Call-out 1), the number of blank pages will match the number of pages requests, including internal print jobs. For example, if a Configuration page is requested for a printer with a network card, two blank pages will print.
Figure 4: Blue gear on the right side of the imaging drum
1 - Blue gear
If the issue is unresolved, click here to contact HP support (http://welcome.hp.com/country/us/en/wwcontact.html) and provide them with the following information: