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How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

If roll paper does not feed, cut the end straight across and uncurl it by rolling it backward, if necessary. Then reload the paper. If thick media does not feed, make sure you are loading it straight into the product, not at an angle. If paper jams when you print on both sides of the paper, try loading fewer sheets.
If the paper feed rollers are dirty or paper powder is attached to it, paper may not be fed properly. In this case, clean the paper feed rollers. Cleaning will wear out the paper feed rollers, so perform this only when necessary. Make sure that the power is turned on and remove any paper from the rear tray.
Dust, paper fiber, and other debris might accumulate on the pickup roller and cause paper feed issues. Clean the pickup roller inside the printer, and then try to print again. Turn off the printer. Remove the paper stack from the input tray.
With dot matrix printers, paper is often feed through pins on a wheel that grab and slowly move paper through the printer. With inkjet and other page printers, paper is fed through the printer with rollers that grab and move the paper through the printer.
When it isn`t working properly, the quality of your prints can suffer. Signs of a bad transfer roller include streaking, squealing, jamming and odors emanating from the printer. Troubleshoot your transfer rollers to restore your prints to their normal high quality.
Printer rollers are the tiny rubber wheels inside your printer that move sheets of paper through the printer. The roller that lifts the paper from the paper tray is called the paper uptake roller. The output rollers deliver the final printout.
Common causes include dust and grime, worn rollers, or inappropriately weighted paper. Prevent paper jams by regularly cleaning your printer and replacing parts as needed. Check the weight of paper that your printer is rated for as well. The printed product is faded.
Paper Jams

This is a common laser printer problem. Primary causes include grime, dust, worn rollers, or incorrect paper weight. The most basic way to prevent paper jams is simply through regular cleaning of your printer. Also, replace parts as needed.

The optical sensor reads the unique media `signature` of the paper by measuring inherent optical properties and comparing them with the signatures of other papers. Once the paper is identified, the printer optimizes printing for the particular paper type.
Many parts work together to make the laser printer and its printing process run smoothly: Paper feeder mechanism: Laser printers use a set of pickup rollers to grab the paper from the paper tray and feed it into the printer.
Use isopropyl alcohol or ethanol according to the manufacturer`s safety guidelines, as applicable. Wipe the roller with a lint-free cloth dipped in isopropyl alcohol or ethanol. After cleaning the roller, make sure that no lint or other material remains on the roller.
Remove the roller cover inside the printer. Pull up on the tabs, then slide the rollers to the left to remove them. Insert the replacement rollers and slide them to the right until they click into place. Replace the roller cover and press down on it until it clicks into place.
Clean the print head, if necessary. Make sure the paper size, orientation, and layout settings in your printer software are correct. Make sure your document does not contain blank pages. If your printer software has a Preview option, you can check for blank pages before you print and remove them, if necessary.
Printer rollers get dirty over time, especially if you do a lot of duplex printing. Dirty printer rollers leave smudges and streaks on your prints, and bits of paper can cause your rollers to jam.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Roller not rolling
ANSWER : try here:

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roller stop retracting
ANSWER : You win the dumbest post of the year so far award.

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LaserJet 1320 Transfer Roller Question
ANSWER : I have the same problem, have You found It? Thanks, Paolo.

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A3 paper not pickup from tray 2
ANSWER : Replace the pickup roller.

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bits of paper stuck in rollers, how do i remove cover?
ANSWER : every model of printer is different so without knowing what type of printer it is nobody can tell you how to remove the cover without sounding like a smarty. Some sap on and others have multiple screws.

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DCP 7065 paper pickup issues
ANSWER : I had the same problem on another Brother model last week. I don’t know if yours works the same, but here’s what I did. If you pull out the paper tray, there is a feed roller in the middle that is right after the pickup roller. In a really stupid design feature, Brother made it so that the tray has to be in to engage this feed roller. Under the left cover, there was a small arm with a gear on it that broke off. This gear engaged the roller when the tray closed. I put the arm and gear back in place and fixed it into place so it would engage the gear but not fall off again. Printer worked fine afterwards.

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Printer wont pickup paper
ANSWER : If you can see the roller turning, clean it. If it is not turning, then there are no parts available and it is time for a new printer.

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Printer jams paper from both trays even after replacing pick up roller
ANSWER : Update: I have the duplex model, and when the paper seems to reach the point where it jams, the printer squeals like two rubber parts are rubbing together when they’re not supposed to.

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