Replacing dislodged paper motor encoder disc on hp officejet k80
Ink was all over the inside of my printer so it just was not working . my it guys gave up on it. I decided that I had nothing to loose so I took it apart and cleaned it up bit by bit it seems to be good again exept that during the opperation the PAPER MOTOR ENCODER DISC came loose. I dont know what possition it should be in. it has numbers on it like a clock face 1TO 12. Please advise
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Both Disc encoder & Motor same for 500 & 510... But its not motor fault, 1. Clean Media sensor P/N:C7769-60168 2. Clean disc encoder. 3. Clean drive roller encoder PCB P/no:C7769-60172 Pl share the error message after doing this activity..
Please try the bellow mentioned troubleshooting steps to help elliminate the paper jam and noise issue for your printer:
Things that cause a carriage jam error:
Dirty encoder strip.
Damaged encoder strip.
Encoder strip spring mount out of position so strip is slack.
Encoder strip not threaded through the emitter/detector that reads the lines on the strip. (just fixed a 5550 with this problem)
Emitter/detector that reads the lines on the strip is bad, this is part of the carriage PCA, (board).
Carriage stuck on side because service station is not releasing it.
Carriage stuck due to being tilted at wrong angle, if it's stuck a few inches from the right it needs to move farther to the right to be released, stuck a few inches from the left end move it farther to the left. (instructions probably on HP web site, they are there for the DeskJet 5550)
Carriage binding on rail due to ink build-up or lack of lubrication, (be careful what you use to lube).
Bad carriage motor.
Bad carriage drive belt.
Some machines have a timing disc on the service station motor and may indicate a carriage jam if the service station motor does not turn.
The cause could also be a loose cable connection on a small circuitboard inside the printer (The one that controlled the paper jam sensors) I fixed it by saudering the leads to the board until I had a good connection again.
This printer is quiet an older version of the Office Jet printers of HP. You just have to plug it in to the MAC and it gets installed automatically. It has inbuilt preloaded drivers into it. Otherwise just follow the simple steps to Add a Printer in MAC.
I cleaned the vertical centerpost (you'll see it when the cartidge is out)with a small amount of acetone (nail polish remover) on a Qtip & it works fine now....must be some kind of circuit that needs to be closed and the ink on it kept it open....
The paper separator pad is worn out and will need to be replaced. It's a rubber pad that rests behind the paper pickup roller and is supposed to prevent what you're experiencing. Contact your nearest authorized HP repair center.
You may want to start from the begining. Unplug the printer from the wall and computer for atleast 2 or 3 minutes 5 to 10 wouldn't hurt. Remove the cartridges. Sometimes the computer thinks for the printer when it comes to ink levels. Before rehooking the printer to the computer. Turn the printer on, reinsert the cartridges, then hook the printer to the computer and reboot. The printer will hopefully work for you at this point. If not try the same, but uninstall all software and download the newest from HP.
Let me know what happen.