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Service Tests and Utilities
HP Designjet 4500 Printer Series Service Manual
19 The following message will appear on the Front Panel. Remove the media if
it is still loaded. Press any key to continue.
20 The Printer will now test Feed Roller 1 moving in an open loop in one
direction and the following message will be displayed on the Front Panel.
Press any key to continue.
Check that the movement done is more than 100 encoder units (in absolute
value), if it is press any key to continue. If the movement done is less than
100 encoder units then open Roll 1 Drawer and check for any visible
obstacles restricting the movement of Feed Roller 1. In this case, press any
key to finish the test.
21 The Printer will now test the Feed Roller 1 moving in an open loop in the
opposite direction and the following message will be displayed on the Front
Panel. Press any key to continue the test:
Check that the movement done is more than 100 encoder units (in absolute
value), if it is press any key to continue. If the movement done is less than
100 encoder units then open Roll 1 Drawer and check for any visible
obstacles restricting the movement of Feed Roller 1.
If the Encoder Units are less than 100, the front panel will display a
warning message. Press any key to continue. The Printer will request that you
follow these instructions:
a Manually load a roll of paper in to Roll 1 Module.
b The Printer will test the Roll Module moving in an open loop.
c Perform a visual check during the test. The Front Panel will ask you if
the paper moved or not:
– If the paper moved, the Front Panel will display System Error
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