20 Most Recent HP Officejet Pro L7680 All-In-One Printer - Page 6 Questions & Answers

You can download the manual here:
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&product=2512009&lang=en&

First do the cut circuit: Unplug your power supply from your printer wait 10 sec. plug it back and try again.

Printer contain 4 cartridges and 2 printeads. Because the black color skip some lines as you mentioned you need to replace a new printead(not the cartridge) No:88 Black/Yellow color one. For more information visit the following link: http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=&cc=us&docname=c00841890&product=2512009

refill your colored cartage

Almost certainly would indicate something is jammed or the roller is damaged.

Here is your user guide and setup guide. The user guide has SOME troubleshooting help in it.
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us〈=en&product=2512009&

Hi,

This must be scanner driver not communicating with the hardware.Try the following steps and i'm sure it will work.

1.Click start - >run then type "twain_32" click OK.

2.A window will open and click EDIT menu-> select all, then delete all the files and folders.

3.Click start - >run then type "services.msc" click OK.

4.Look for service called "HPZ PML Driver", Doubled click on it, check whether the "startup type" is "Automatic", if not changed it to automatic.Checked the "Service status" is "started".If not click on "start" button.Click Apply and OK.

5.Right click on "HPZ PML Driver" and click "Restart".Close the window.Click start - >run then type "%temp%"(without quotes) click OK. A window will open and click EDIT menu-> select all, then delete all the files and folders.If u cant delete them its ok, just close the window and go to step 6.

6.Disconnect the Printer USB cable, Insert the
installation disk of your printer.If Installation wizard
pops up, click on cancel/exit.

7.open My Computer, right click on your CD/DVD ROM Drive , then click "open".Look for folder called "UTIL" then look for folder called "CCC".There you will see a file that says "Uninstall_4". Double click on that file.

8.A run box will poppup, click OK, now you will see the command windows, hit enter the Driver that is necessary for comunication which are corrupted will be removed.

9.After that, restart the PC and Insert the Disk and
install the printer.Connect the Printer USB only if the PC prompts you to connect.After installaton completes, check the scanner.

Please let me know, once you have done this

Thanks
Rizwan
[email protected]

Hi there,You cannot install HP 940 Cartriges for Officejet Pro L7650 as they are not compatible and the mechanism is different for both the cartridges,In your printer, the HP 88 fits on the left bottom corner of the printer and the HP 940 cartridges are mounted on the Printhead inside the printer on HP Officejet 6500 AIO.Regards,Suhail

Blocked print head nozzles Inkjet printers need to be used frequently to prevent blocked print head nozzles. You may have blocked print head nozzles. Try the printer maintenance to clear the printer nozzles. After several deep cleaning attempts and there is no improvements in the print then a new print head is required. Also try - Removing the print head, run it under hot water for 2 mins, then let soak for 10 min. then used a can of compressed air to dry thoroughly. It may fix the blocked nozzles. A new print head maybe expensive and it maybe more cost effective to purchase a new printer.

If Printer heads health condition is not good, alignment wont completes..Four individual cartridges & Two print heads, each print head prints two colors.. Black& Yellow, Cyan & Magenta.. Verify which color is not printing properly(Color missing Or white bands).. Perform 2 or 3 times print head cleaning through printer menu..Try for alignment.. If success end.. if no, replace the print head which is not printing properly.. Before replacing the printer head ensure that cartridge ink should be above 30%...

If your not getting a low ink warning for the cartdridge I would clean the head carfully with some IPA and an ear bud. Also check any electrical connections between the cartridge and the printer

check the ink cartridge

There is some problem with your print heads. Run a print diagnostic report and see if it helps. You also may want to trigger clean cartridges if triggering print diagnostic page does not help.
This issue may happen if the printer is not used for few days. Recommend to keep the printer powered on always, or then trigger print diagnostic page as it tries to unclog the blocked print heads to give you a clean print.
Hope this helps.

Try unpluging the printer for about fifteen minutes or so.

Try to reinstall your printer.Check your black cartridge if they are installed properly.Replace your black cartridge with a new one.

yes.replace the yellow cartridge