Question about Apple HP DeskJet 840c InkJet Printer
I replaced the printer cartariges, but the orange light continues to blink indicating that it needs more ink. I tried to do a test print, but it will not print. I checked the cables, and they are connected properly. what am I doing wrong?
In your print utility, you need to calibrate your printer, which will print a test page and realign your cartridges. It should be OK after this. If not restart the printer and the computer.
Posted on Sep 13, 2007
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Posted on Jan 02, 2017
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Aug 25, 2013 | Epson Office Equipment & Supplies
has developed incompatibility or is incompatible
The Solution is to try an older/another cartridge (doesn't matter if ink
is finished. You must replace cartridge one at a time). If lights stop blinking
it confirms that your cartridge has become incompatible or developed
incompatibility. Also if your printer is the type that can work with only one
cartridge, remove one after the other (closing back the lid/cover) to determine
which in the set (black or color) has become incompatible. At the instance the
incompatible one is removed and you close the lid, the blinking will stop (for
printers that can print with one ink cartridge only). Just replace the
incompatible one and start printing again. In most cases the issue is always
with one cartridge. But if both are affected, you have to replace both. Because
of this type of problem, always keep used cartridges somewhere safe; they come
in handy for this type of troubleshooting.
electronic panel is dirty
The electronic panel on the cartridge that makes contact with the
cartridge carrier inside the printer is dirty and needs cleaning. This electronic panel is front part of the
cartridge with copper "dots".
The Solution is to try to clean this panel with a piece of folded tissue paper soaked in a bit of methylated spirit. Also try to clean the area in the cartridge carrier/holder that makes contact with the cartridge's electronic panel (Usually this is more difficult). If you cannot reach it with your fingers, use a stick or something with tissue wrapped around it. Allow to dry well and return the cartridges, close the cover. The blinking should stop if the electronic panel is the issue. Once the blinking stops the printer will print.
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