Xerox Phaser 8400 Service Manual page 124

Jam Code Troubleshooting Procedures
A2Q The deskew flag tripped unexpectedly while the printer was picking paper from
Tray 1.
1. Try using different, supported media.
2. Ensure the paper guides are snug against the media in the tray.
3. Push up on Tray {2 - 4} Nudger Roller until it is captured by actuator arm.
4. Run the following diagnostic tests, Deskew Flag, Tray {2-4} Pick Clutch and the
Tray {2-4} Solenoid.
5. Ensure ground integrity of the printer, see page 4-77.
6. Verify all doors and covers are fully closed and not moving during printing.
7. Replace the Tray {2 - 4} Pick Clutch.
8. Replace the retard roller.
9. Replace the preheater.
A3G
Deskew Sensor time-out event during an auto drum maintenance cycle.
A3M
The deskew flag timed out waiting for the paper picked from Tray 2.
A3N
The deskew flag timed out waiting for the paper picked from Tray 3
A3P
The deskew flag timed out waiting for the paper picked from Tray 4.
A3Q
The deskew flag timed out waiting for the paper picked from Tray 1.
1. Verify media is appropriate for the tray.
2. Verify the tray is not overfilled and the guides are positioned correctly.
3. Check for obstructions in the paper path.
4. Test the appropriate Tray Solenoid.
5. Test the appropriate Tray Pick Clutch.
6. Ensure the take away rollers are in good condition.
7. Test the take away roller using the diagnostic Paper Path Drive test.
8. Replace the appropriate Separator Pad Assembly.
9. Replace the Pick Assembly.
A3R Deskew sensor time-out during movement from exit roller to deskew roller when
duplexing print.
1. Ensure the media is appropriate for two-sided printing. Not too short, not too
smooth. Check printer specifications.
2. Inspect the condition of the exit rollers and the duplex roller.
3. Check the Front Door for obstructions or damage, replace the Front Door if
necessary.
4. Test the operation of the exit roller and the duplex roller using diagnostic Duplex
Paper Lead Edge Times test.
5. Test the deskew sensor using the diagnostic Sensors test.
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Phaser 8400/8500/8550 Color Printer