Question about HP DeskJet 840c InkJet Printer

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Printer hp deskjet 840c blinking green and red light why

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Depends which red blinking light. I assume the red light is the resume light. The green light is the power light. If the Power and the Resume light are blinking alternately, then you have a paper jam somewhere in the printer. remove the paper jam and you should be fine.

Posted on Mar 18, 2011

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I bought a new 23 tri-color cartridge for my old hp 840C deskjet printer. the ink light keeps blinking. when I put in the old cartridge which is nearly empty, the light stops blinking and it prints a page


Are you using original cartridges by HP? If you are using the 'copy' manufacturers, they don't always work.

If HP, check you've removed all packaging, especially around the nozzel and circuit contacts. Look for sticky tape to be removed.

Jan 08, 2011 | Office Equipment & Supplies

1 Answer

What ink cartridges are compatible with hp deskjet 840c


Hello,
HP C6615DN (HP #15 black) and HP C6625A (HP #17 color) inks are the compatible inks for this particular printer.
Thanks, Lolita

Nov 04, 2010 | HP DeskJet 840c InkJet Printer

1 Answer

The printer is not printing even wen d cartridge is full and driv


well writen- if all is as you say that just leaves the drivers for your printer...
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?lc=en&dlc=en&cc=us&lang=en&product=59868&
go to this page and select your operating system (win XP- Vistia) then save the drivers to desktop.
Now- disconnect your printer from your computer and don't reconnect until you are instructed to do so. OK-run your printer drivers and follow directions-connect when told to-
And that should do it.
Please leave for me a rating...

May 15, 2009 | HP DeskJet 840c InkJet Printer

1 Answer

Hp 840c no red printing


Dip the head area of cartridge in hot water by 2 to 3 seconds two or three times and use tissue to check the color, if all three color comes out to tisssue paper, then it works else you have to replace the cartridge.

Ahmad Bilal

Feb 21, 2009 | HP DeskJet 840c InkJet Printer

2 Answers

Blinking lights on my hp deskjet 840c printer


There should be some error .So you know how to remove the catridges just remove it n re insert it properly.If there are any paper jams try removing it also.and by the way if you haven't installed the drivers for HP deskjet this problem may arise.So make sure you ahve don this.Also this can be happened if the printer have some hardware problems.So none of this solutions are working its better to consult it with an expert.

Dec 18, 2008 | HP DeskJet 840c InkJet Printer

1 Answer

My deskjet 840C printer wll not print green


cos green color is out. what u do is refill the color catridge or rather buy a new color catridge n ur up again.
hope u find help here
thank u

May 21, 2008 | HP DeskJet 840c InkJet Printer

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