Question about HP DeskJet 3940 InkJet Photo Printer

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HP 3940 Printer not connected

I have a HP 3940, which I have had for about a year. I have had a couple of sets of cartridges during that time. In each case these were HP cartridges and I have had no problems with the printer to date.

When the last set ran out I purchsed remanufactured cartridges from a reputable retailer. When I installed these I was unable to print and had an error message "HP Deskjet not connected". I have uninstalled and re-installed the printer but this has not solved the problem.

When I reinstalled the printer with the old (HP) cartridges installed the printer printed OK. It also did so after shutting down and restarting my PC. However, when I last started my PC (with the old HP cartridges installed) the "not connected" error message reappeared. My operating system is ME. Any suggestions would be appreciated. Wayne.

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1 Answer

The "remanufactured" cartridges can cause the printer to stop working by making a electric failure in the printer circuits. Those cartridges should be avoided now that HP makes extremely cheap and fragile circuits, not like the cartridge burner's HP's 600, 700, 800.

Posted on Feb 04, 2008

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Posted on Jan 02, 2017

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1 Answer

Hp 3940 green light continious blinking?


It insists there is a Cartridge problem on the Printer............ In this Case take out the Paper from the Paper Feed Tray........ Unplug the Power Supply from the Printer.......... Remove both the Cartridges from the Printer.......... Now take a size 10 Envelope fold it so that it should become like a thin long strip........ Now Insert that Envelope on the left side corner of the Printer and move it from right to left and left to right as fast as u can for about 10 times.......... Now Insert the Ordinary Papers onto the Printer and insert both the catridges and Turn on the Printer...... Blinking Stopped...........Issue Resolved....... Still Blinking: Remove both the Cartridges take a Paper Towel turn the catridges direction so that u can see a Copper plate with small boxes on it....... Just wipe it twice or thrice with the Paper Towel.......... Now insert it and Power on the Printer and see whether the Lights are still blinking if it is still blinking...... Get the Printer Replaced!!!!!
Good Luck!!!!!

Sep 26, 2011 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

When it chooses to "print", page(s) is/are blank HP deskjet 3940


1. Check that your ink-cartridge is not empty.

2. Run the HP Support software (supplied/installed with the printer) to run a "print-head-cleaning-cycle".

3. Replace the printer.

Jul 22, 2010 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

After my printer hp desktop 3940 prints it changes the status from ready to no toner and will not print again



I have to ask this question of you, just to make sure this is not an issue. Are you using a factory new ink cartridge?
Please consider the following:
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
If you are using factory new cartridges, then please call the manufacturers Technical Support for assistance with the warranty on the cartridges
Don

Dec 03, 2009 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

Can you use HP 3940 printer with only the black ink cartridge in the printer


Hi,

I think you guy want to experiment on this printer or want to save money of color ink cartridge

for this you can unplug color cartridge and use printer if your query remains then use a empty color ink cartridge.

thanks
ttyagi

Jul 18, 2009 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

3940 blinks and cant pritn


hello lotsaprint, ipang
Few days ago i had the same problem with my hp 3920 color photo printer. All i did is removed the cartridges one by one and the problem was solved. Try removing the color cartridge first, then switch on the printer see i the problem is solved the cartridge contacts must be dirty. clean it with soft tissue (dont use any liquid) and reinsert the cartridge. If the problem persists u may need to replace the cartridge. Check with a new one if u can borrow one from anyone b4 u buy.
Repeat the same procedure with black cartridge if necessary. If u r new and need guidance for removing the cartridge, then do the following.
1). Switch on the printer.
2). Open the front cover. The cartridge will now move to the
center.
3). Switch off the printer and remove the power cord.
4). push the cartridge gently downwards to detach.

Close the cover when u r done with above mentioned.
For more info see the user guide u go with the printer.

Hope this was helpful
anishpillai2

May 05, 2009 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

I have an hp Deskjet 3940 printer and it wont print everything in a page. Sometimes even coloured pages it will not.


dear mdoris5, First confirm that how often u use ur printer. If u need not take prints everyday then atleast you should switch on ur printer daily, because when the printer switches on it perform a cartridge cleaning task.
The cause of the problem might be :
1) Clogged print heads due to no use for long periods.
2) Empty cartridges.
Try refilling ur cartridge or use new one to check if u can borrow one.

anishpillai2

May 03, 2009 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

My HP printer's light blinks, but it doesn't print.


two things to consider.
1. If the blinking is fast (like more than two blinks per second) then the printer is damaged. Either the main controller board is fried or the carriage/ink controller is damaged.
2. if the blinking is slow ( 1 blink per second) this means that either of your cartridges is busted. remove the black cartridge then close the top cover. If the blinking stops, then the black ink is the culprit. If not, replace the black then remove the other cartridge. THis means that one of your cartridge needs to be replaced.

Sep 27, 2008 | HP DeskJet 3940 InkJet Photo Printer

5 Answers

Lost my installation CD and downloaded the software from HP but doesn't work


ok..

remove the old software first

then get another fresh set of drivers, make certain that your operating system has the latest service pack installed.

re install the drivers

try it again

Jun 24, 2008 | HP DeskJet 3940 InkJet Photo Printer

1 Answer

Printer cartridge container doesn't stop in the middle


It appears that the injection may have been lethal, it was still using the ink that it carries in its tubes then it mixed with the injection and is now blocked \ faulty. To repair it you could try getting a new set of HP inks.

Oct 20, 2007 | HP DeskJet 3940 InkJet Photo Printer

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