Chosen Solution
The printer will not pick up the paper to feed it into the printer. It displays the load paper into main tray message even though there is plenty of paper. It seems like it could be a paper sensor issue.
Do the rubberized wheels spin, like it’s attempting to grab paper? If so, it’s possible that the rollers are dirty, and it just can’t generate enough friction to grab and handle the paper. Also, have you tried any other paper?
More likely the rubber has dried out. See if you can find something like this to clean the rollers (don’t spray the rollers directly, use a cotton swab, then clean the rollers with it): Rubber Revitalizer
One drop of superglue on the metal part and repositionning the gear. All seems to be Ok No screw to remove. Four hands and a video-microscope will be very usefull !
This fix worked. Here’s another pic. Slide the black gear back onto the metal rod teeth.
Try some vasoline on the rubber. Vasoline tends to swell the rubber thus grabbing the paper
I found that the gear that is shown in the above pictures on the arm that drops down had cracked and the splines on the shaft would cause the plastic gear to open up at the crack and not allow the gear to turn. That shaft with the gear will require replacement.
the roller assembly has come apart cannot reassemble rollers for fax feed
Hi Lenny Can confirm that this worked perfectly for me and revived a very good printer that was set for being thrown away. Many thanks, great solution
I tried cleaning the roller etc. However the problem persisted. The problem was solved after correctly positioning the green vertical tab in the back of the paper tray. The tab needs to be positioned at the correct location for the type of paper. Most of the time it is just 8x11 letter paper.
The printer is not picking the paper
I had a similar problem on our HP C7250. For this model, the gear is very accessible and trivial to inspect and fix with a drop of superglue. 5 minute fix!
The shaft with the upper 4 grey paper rollers was not turning reliable because the plastic gear was slipping on the shaft. The shaft had slide to the side and the spline on the metal shaft was not fulling inserted into the gear. The fix is to apply a tiny drop of superglue to the shaft and slide it ‘left’ to fully engage with the gear. I suspect that this occur when someone aggressively cleared a paper jam at the back of the printer and didn’t pull the paper evenly. Here’s the location of the gear (see left side of image)
Here’s the ‘before’ photo (see the shiny metal shaft spline to the right of the gear):
Here’s what it looks like after the fix:
