![]() Rotate the axis upward (only possible way) to clean the next section of the 4 rubber drums. Clean these with a Q-tip moistened (not soaked) in clean water, and move from left to right. You can now see 4 rubber drums on an axis. Unplug the printer's power cord, detach the duplex unit at the back (push to the left and pull back to disengage the unit from the printer). If you see the paper pick-up drums slip on the paper, then you may have better luck. Here's a written summary based on my experience: There are image and video instructions available from HP. Scenario 2: the pick-up drums do roll, but they slip on the paper Probably the entire printer must be torn down, and I don't expect you will be able to easily fix the excess play on the paper pick-up mechanism that drive the rubber rolls when pressed on the stack of paper. I suppose that because of excess play (programmed obsolescence?) eventually the cogwheels that drive the drums will slip. When the drums touch the paper, they simply don't rotate. When lifted, you will be able to rotate these drums in one direction. When printing, they are dropped to the top of the paper stack and will engage to separate the topmost sheet off the stack. When not printing, these drums are lifted. It looks like there is too much play in the paper pick-up unit (at the rightmost end inside the printer) on which both pick-up drums are mounted on a single arm. You most likely hear a grinding noise of plastic cogwheels slipping when the printer tries to feed a sheet of paper. Scenario 1: the pick-up drums do not roll, you hear a grinding noise Thanks much for steering me in the right direction. My printer had little use as I have a second one that I use for everyday printing, so, wanted to save the hp 310 as my good scanner/color/printer. Now works great! Hardest part was manipulating the dabbing of the epoxy on the spline due to working with mirror image. Waited until next morning to try printer. Very carefully slid the gear with fingers back on the shaft spline viewing that it was centered on the mating gear. Mixed some two part epoxy and carefully dabbed small amount on the shaft spline until about 100% coated. Then slid the gear down & off the spline. ![]() ![]() (can move the gear by hand back in line with the gear train and try once to see if it fixes problem). One small plastic gear slid off the steel shaft 'spline' not engaging drive train. Taped drop light to now top of printer looking at the mirror/gear train. ![]() Positioned small flat mirror angled on its edge to view gear train. Touch the icons and menu options to make a selection.Stood hp 310a on its side. Flick to scroll through the menu options. Control panel buttons are lit only when available. Printed in Animations and instructions on the touch screen display will guide you through all the steps you need to finish setting up your printer. Setup the printer Unpack the printer Turn on the printer © 2011 Hewlett-Packard Development Company, L.P. Continue setup and activate ePrint on the printer display No CD/DVD drive? For computers without a CD/DVD drive, please go to to download and install the software. Press the power button to turn on the printer. Verify the box content Connect the power cord in the back. Register your printer Get quicker service and support alerts by registering at. Help (Touch to run animations and get more help) Home (Touch to display the Home screen) Cancel (Touch to stop the current job in progress) Back (Touch to return to the previous screen) *CQ877-90068* *CQ877-90068* CQ877-90068 PHOTOSMART 7510 e-ALL-IN-ONE SERIES Remove all tape, protective film, and packing material.
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