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3-194 Troubleshooting Analysis Guide (TAGs)
TAG 901: Misregistration/Skewed Prints (Duplex)
Error Code: 901
Possible Causes: Wrong weight or type of paper loaded
Possible Defects: Duplex holding tray sensors
Duplex holding tray motor
Duplex drive/clutch
Pinch rollers A and B
Route separator
Duplex control board #2
Connectors or wiring
PCL board
Registration is correct when the top (+ or -2) of the 20-line indicator, found on the top of a
test print, is at the leading edge of the print.
If the problem varies from print to print, suspect a mechanical binding problem. if prob-
lems exist in the simplex mode, go to TAG 807: Misregistered/Skewed Prints (Simplex).
1
Verify that the upper and lower paper cassettes are not damaged.
• Confirm that the paper in the cassettes meets paper specifications, outlined in the Guide to
Operations manual.
• Make sure the paper in both paper cassettes is loaded properly.
• Make sure the side and rear paper guides in the paper cassettes are positioned properly.
• Check both paper paths for obstructions or contamination.
• Run test prints.
Has the problem been resolved?
No: Continue.
Yes: Turn to TAG 002: Check & Problem Resolution.
2
Turn the printer off and unplug the power cord.
• Inspect the following for damage or contamination:
• Duplex drive/clutch assembly
• Timing belts
• Upper paper guide assembly
• Pinch roller springs
• Route separator and springs
Are these parts clean and in good working order?
No: Repair or replace any damaged parts as needed, then turn to TAG 002: Check & Problem
Resolution.
Yes: Continue.