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Diagnostic Tests and Utilities
HP Designjet 4000/4020 Printer Series Service Manual
1. Turn Drive Roller
The purpose of this Service Utility is to rotate the Drive Roller and the
Overdrive in order to clean them.
REMOVE THE MEDIA BEFORE PERFORMING THIS OPERATION.
OPEN THE WINDOW OF THE PRINTER AND ACTIVATE THE
WINDOW SENSOR (USING A PIECE OF PAPER) BEFORE
PERFORMING THIS SERVICE UTILITY.
Perform the Turn Drive Roller utility as follows:
1 In the Service Utilities submenu, scroll to "Turn Drive Roller" and press Enter.
2 The Printer checks to see if media is loaded. If media is loaded, the Front
Panel will display the following message. Unload the media and start again
from step 1:
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