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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.
1
Identify the back cover (opposite from the tray door). Remove the four screws in the back cover.
Remove the back cover.
2
Pull open the paper tray.
3
Set the DIP switches on the controller PCA to motor test mode.
4
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.
5
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
C8519-90912

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