Subject: Canon IR3300 ADF Skew
Question: Anyone know what causes this model of Canon to skew the original when trying to duplex? It looks like the original twists sideways just before it finishes scanning the first side, then sometimes will jam or re-feed crooked when it goes back in to scan the second side. The two rollers you can see under the document tray do not seem to come together to hold the original. Not familiar at all with this model and any help from you Canon wizards would be appreciated.
Answer: I would make sure those rollers touch, make sure one of the hinges isn’t broken, clean all rollers in the reversal unit and make sure nothing is caught in there making the second side skew.
Answer: You may have a deformed rubber ring on the solenoid that is responsible for activating those rollers underneath the original tray. Had this problem twice.
Answer: With the outer ADF door open, the rollers that are in the hinge portion won’t touch each other. You can clean them with oil. Yes, oil. Get them wet and let it sit for at least 60 seconds and then either wipe off the excess or run some clean paper through. This should help guide the paper through on the second pass. It makes them sticky again.
Question: Thanks for all the advice fellow technicians, will try out these suggestions and follow up soon.
Subject: ES 230 Toner Problems Q
Question: I know, this should be upgraded, but hopefully the old timers can help with this problem. New wire harness, toner sensor, and developer. Cleaned everything in drum and developer units. Reassembled and calibrated with 05-200 to 240%. After calibration, copier continues to say ‘wait adding toner.’ This copier has run flawlessly in the past (normal repairs, PMs, etc.) but the copier just moved up one floor to a new office. A broken harness at the toner sensor plug caused need for change. I gave it a new toner sensor, just because. I also gave it new developer, to see if the old developer was contaminated. Still asks for toner. (I did not contaminate the new developer—I taped over the hole in the toner cartridge). Any help would be greatly appreciated. Thank you in advance.
Answer: I know these are obvious, but did you check the toner motor rotation and is the auger turning in the toner cartridge? Can you hear the toner motor turning while the copier is asking for toner? Answer: I agree that the feed auger in the cartridge is probably broken. A new toner cartridge should work. You said you taped over the cartridge port, if so you probably broke the auger when you ran it like that. Customers not pulling the packing tag from the port are the most common cause of those augers breaking. Just leave the toner bottle out if you want to run the machine without feeding toner.
Answer: I have found that this model if calling for toner when you replace developer will still call for toner after resetting the auto toner; you may have to let it cycle for 20-30 seconds and let it have some toner. Provided it is functioning (toner motor is turning and auger is ok in toner cartridge).
Subject: Canon IR4570
Question: Problem with jamming after registration roller doesn’t make it to the fuser. Replaced the registration sensor, no joy. We replaced the fuser 6 months ago. Any thoughts?
Answer: Make sure the registration sensor is working and make sure the toner cartridge is turning. Good luck.
Answer: What’s the jam code? Is there an image on the paper? How far past the registration roller? Is it making it to the drum? Does it do it out of all trays? Are paper trays set to correct paper size? Try pushing on lower door below duplex door and see if it makes a copy.
Answer: There are some very small rubber tabs that push the inner door into the vertical path rollers. They are only 1/4 inch by 1/8 inch. They mount on the extreme corners of the cassette door. If they are missing or mushy or out of place this can cause jamming from the top cassette in particular. We’ve used recoat tape on the gray vertical path rollers. Also used pieces of paper feed tires instead of foam rubber on the door. Does the #2 cassette feed well? If so this is the problem. Good luck.
Answer: I had this pre-Christmas on an IR color—the only answer was new feed rollers.
Question: Thanks for the suggestions, I appreciate the help!
Subject: Sharp AR-168 Exit Jams
Question: Have the AR-168 jamming every time at the fuser. I exchanged with another working fuser and it jams at the same place. Does accordion as it enters the fuser. Thanks.
Answer: Are the fuser rollers turning?
Answer: Mark the lower roller to see if it turns when you turn the power on. If it doesn’t turn, pull out the fuser, check the gear on the fuser. Sometimes the tab brakes and the fuser don’t turn. Turn the main motor by hand and see if the small gear turns (the one that turns the fuser section). Let us know what you find.
Answer: Also check the small fuser drive gear that meshes with the fuser roller gear. They wear and usually make a lot of noise and jam.
