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HP LaserJet 9000dn Service Manual: Accessories Diagnostics; Sheet Feeder Diagnostics; Figure 168. 2000-sheet Feeder Label

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Accessories diagnostics

2000-sheet feeder diagnostics

The 2000-sheet feeder can run stand-alone diagnostics to test the device motors, functionality, and
sensors. You will need one power cord, one #2 Phillips screwdriver, and a small flat-blade
screwdriver for the DIP switches.
2000-sheet feeder diagnostics label
The following label is on the inside of the 2000-sheet feeder back cover:
Figure 168.
2000-sheet feeder label
2000-sheet feeder motor test
This test verifies that the three motors on the 2000-sheet feeder are functioning properly.
Identify the back cover (opposite from the tray door). Remove the four screws in the back cover.
Remove the back cover.
Pull open the paper tray.
Set the DIP switches on the controller PCA to motor test mode.
To turn the power supply switch to diagnostic mode, pull out on the blue handle.
• If the motors are working properly, you will hear them as they rotate continuously.
• If the motors do not rotate, replace the corresponding field replaceable unit: either the paper
pickup assembly or the paper deck drive assembly.
To stop the test, set the power switch back to operational mode (push in), and reset the DIP
switches on the controller PCA to the off position.
246 Chapter 7 Troubleshooting




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