Question about HP Officejet Pro L7680 All-In-One Printer
You can refer to the link below for a document regarding troubleshooting print quality issues with Officejet Pro L7680.
Posted on Apr 07, 2011
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Posted on Jan 02, 2017
SOURCE: Missing text lines
This is caused by the black part of the printhead getting clogged and it's very difficult to shift this.
My personal solution has been to switch to a dyebase ink instead of of the pigment ink that HP provide... but as a more practical matter it seems that this sort of clogging happens when the printer is located in a dry, overly warm environment where things like air conditioning, radiators, etc... dry out the air.
If possible, relocate the printer to a more ventilated, cooler area.
Running the cleaning routines should clear the blockage after a couple of times but it may well return so this is by no means a full fix.
Posted on May 12, 2009
Refer to the following table
Contamination in the laser path
1. Clean the laser path. (Remove the laser/scanner assembly and clean the lens.) 2. Replace the laser/scanner assembly
Replace the fuser assembly
Lack of toner or faulty toner cartridge.
Redistribute the toner in the toner cartridge. If the problem continues, replace the toner cartridge.
Posted on Sep 30, 2009
SOURCE: We have a MP830 Canon
I service this unit a lot for print quality issues, and most of them come from using non-Canon brand ink. There is a solvent quality to the Canon ink that helps keep the printhead from clogging.
If you are not using it, I recommend it, especially for the big #5 ink tank.
Alignment has nothing to do with the missing print.
Use the cleaning utility in the maintenance area of the printer driver utilities to clean the printhead.
Run the nozzle check, and you should see improvement with each cleaning. Do not run the cleaning more than maybe 5 times, and never use the deep cleaning, you are just wasting a lot of ink.
If you don't see any improvement, stop cleaning and take the unit in for service - we have sonic washers and other effective methods for cleaning and flushing the printheads without damage.
You can replace the printhead yourself, but it will cost less to have it cleaned.
Posted on May 06, 2011
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