Hp officejet pro L7650 all in one printing problems
The printer spits out about six misprinted pages before it prints it out correctly. It usually will do only part of the document on the first one and then the others just have wierd letters that look foreign. One time it spit out about 16 pages before it finally stopped. It's wasting all my paper. Any clue as to what is happening? I've only had it for two days - do I need to return it?
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Re: hp officejet pro L7650 all in one printing problems
Once try to print the self-test report from the front panel of the all-in-one and check the result, then remove the cartridges from the all-in-one and clean the copper contacts of the cartridges with a soft cotton cloth and then insert them again and try to align the cartridges.
If the issue still persists then power cycle and reset the all-in-one.
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The reason why the printer refuses to print if you get low on one or more colors is that the system runs off negative pressure through the ink lines to the print head. If you were able to continue printing with an empty cartridge you could get air in the respective ink line, disrupt the negative pressure, make it so that that color will no longer print, and require you to get the printer serviced to fix the problem. I own a Cartridge World ink refilling store and I feel this is a good machine (compared to some of the others out there). The only down side with this type of machine is the print heads expiring or getting clogged as you are experiencing. The reason the black is clogged and not the other colors is that the black ink is pigment based and the colors are dye based. The pigment based inks do tend to clog print heads over time. You can try to rehydrate the print head with warm distilled water. if you can't get it working to your satisfaction you can buy a new black/yellow print head for $72. With this type of printer you should print at least one black and white and one color document per week to keep the print heads fresh. If they sit too long without ink flowing through them then they can get clogged and print poorly. I hope this helps belay some of the resentment you hold towards your printer.
Could have a corrupt driver. Disconnect
the printer or at least be sure it is turned off. I'd do
both and when the CD software program asks you to connect the printer
to the USB port, do so and it should again work properly.
Hope this helps. Bud