The problem is most likely due to the little optical sensor assembly on the Transfer Belt getting covered up with toner. When you pull the transfer belt unit out and flip it over to the right, it will be located on the top left of the unit. It looks like a little rectangle sticking out over the edge of the plastic transfer belt. Remove the sensor assembly by removing the screws around it, and it should come right off (will have some wires running to it). You can further disassemble the sensor by removing the circuit board holding the LED and receiver. You'll have to clean toner out of or off of both of these. Mine had more on the emitter (LED), but YMMV. Be careful removing the circuit boards, because if you break it, it's $330US for a new transfer belt. 8-o
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Does it print out a meter report OK? Does it make a copy? NOT A Print? I check the Xfer roller The sponge looking roller is the xfer belt OK (Shiny ) inside across from the sponge roller when cover is close. any P_ codes little oil can looking thing on the operation panel bottom
the transfer roller is a foam roller that transfers the toner onto the paper. It will be visible with toner removed, a little wider than a piece of paper, and about the thickness of a roll of quarters. I don't know how to physically remove it on your model, but transfer roller issues in general can be remedied by removing the transfer roller and wrapping it in packing tape until the tape comes off clean.
While you're in there, vacuum everything out for good measure; but never, ever use canned air on a laser printer.
HEY THERE GUY'S THE EASIEST SOLUTION I CAN TELL YOU TO DO IS CALL CANON COMPLAIN THE'Y WELL MAKE YOU DO A COUPLE OF THINGS THATS SUPPOSED TO CORRECT THE ISSUE: LIKE ROLLER CLEANING A COUPLE OF TIMES, CLEAN THE ROLLER WITH ALCHOL, TURN EVERYTHING OFF AND SHAKE THE MACHINE A LITTLE AND TURN IT BACK ON TO SEE IF THAT WORKS AND FINALLY IF THAT DOESNT WORK THEY TELL YOU TO UNISTALL THE DRIVER AND REINSTALL IT!! WELL MAYBE FOR SOME OF YOU THESE STEPS MIGHT WORK!! BUT L'M TELLING YOU IVE PERSONALLY NOTICED CANON'S PRINTERS ARE ****!!! I'VE GONE THREW 2 PRINTERS SINCE DECEMBER LAST YEAR AND THEY SENT ME OUT A 3RD ONE FREE OF CHARGE!!! I TOLD THEM I HAD A CANON MP 150 FOR YEARS THAT I PRINTED EVERYTHING ON IT AND I STILL CAN EVEN AFTER MY DROPED IT AND BROKE A COUPLE OF THINGS ON IT!! SO FAR I HAVE USED THE MP470 WHICH IS GARBAGE!! AND THE MP480 IS THE SAME!!!! L MIGHT JUST SELL THE ONE THEY GAVE ME!!! IF ANYONE HAS QUESTION FEEL FREE TO CONTACT ME AT email@example.com SEE YA!!
Your error means -
Incorrect pressure by or separation from the transfer belt cleaner
1 - Check the Belt cleaner positioning sensor pc9 (located at the rear on the left hand side towards the top when looking from the front of the printer)
2 - Replace the Second image transfer roller pressure/separation
3 - Check the Image transfer roller pressure contact solenoid SL2 (this sits more in the middle behind the printhead)
4 - Replace PWB-A.
5 - Replace PWB-P.