Question about HP Deskjet 6940 InkJet Printer

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The tricolor cartridge status light is blinking. I want to print with the black cartridge as I always do. I have hardly used the tricolor cartridge. It cannot be empty. The printer will not print. I have turned the printer off and back on. I have turned the computer off and back on. I have taken out the cartridges, shaken them and put them back in the holder.

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Ink cartridge will go dry up if you don't use them. I would try cleaning the head and do some maintence on it. It looks to me that you have to buy a new black cartridge. I went through the same thing on mine.

Posted on Nov 15, 2009

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The HP Photosmart C4780 All-in-One does not use HP 300XL Cartridge.

Below are the cartridges used by your printer with the no. of page count and their price as per HP

HP 60 Black 200 pages $14.99 HP 60 Black/Tricolor 200 black, 165 color $31.99 HP 60 Tricolor 165 pages $19.99 HP 60XL Black 600 pages $34.99 HP 60XL Tricolor 440 pages $40.99

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I might have an idea why this is happening....The print cartridges might need cleaning...
Follow the steps below to do this....


Step one: Remove the black, photo print cartridge, or the gray photo print cartridge

NOTE:
The black, photo print cartridge, or the gray photo print cartridge is in the right side of the carriage. -Lower the cover of the product.
-If the print cartridge status light flashes, proceed to Step two: Replace the print cartridge.
If the print cartridge status light is off, proceed to Step three: Manually clean the print cartridge.
Step two: Replace the black, photo print cartridge, or the gray photo print cartridge and remove the tri-color print cartridge
- Remove plastic tape from new ink carttridge CAUTION:
Do not touch the print cartridge ink nozzles or copper contacts. Touching these parts will result in clogs, ink failure, and bad electrical connections. Do not remove the copper electrical contacts.



NOTE:
The tri-color print cartridge is in the left side of the carriage.
-Lower the cover of the product. -If the print cartridge status light stops flashing, proceed to Step three: Manually clean the print cartridge.
If the print cartridge status light still flashes, replace the tri-color print cartridge. If the issue continues, service the product.


Step three: Manually clean the print cartridge
1. Gather the following items to clean the print cartridge and carriage:
o Clean distilled water. Use bottled or filtered water if distilled water is not available. Tap water can contain contaminants that damage the cartridge.
o Clean cotton swabs or any soft, lint-free material that will not stick to the cartridges (coffee filters work well).
o Sheets of paper or a paper towel to rest the cartridges on during cleaning.
2. Open the product cover, and wait until the carriage stops moving.
3. Remove the print cartridge, and place it on a piece of paper with the nozzle plate facing up.

NOTE:
Clean the contacts quickly so that the print cartridge is not outside of the product for more than 30 minutes. If the cartridge is outside of the product for too long, the ink can dry and clog the nozzles.
4. Unplug the product.
5. Dip a swab in the clean water, and then squeeze it to remove most of the moisture. The swab should be only slightly damp.
6. Clean the print cartridge contacts. Do not touch the nozzles.
7. Clean the contacts in the carriage, inside the product.8. Either let the print cartridge sit for ten minutes to allow the cleaned area to dry, or use a new swab to dry it.
9. Reinstall the print cartridge.
10. Plug the product back in.
11. Close the product cover.


Good Luck!
If there is anything more I can do for you please let me know if not and the problem is solved please rate it, Thanks, JCE

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Black, Cyan, Magenta, and Yellow Supplies Status lights
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If you don't have a User Guide click on the link below and save it for future reference.


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If this solution has been helpful, please rate it. Thanks!

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Your Black cartridge is empty.

From the user guide:

Black, Cyan, Magenta, and Yellow Supplies Status lights
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Here is a link for the User Guide:

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HP DESKJET 1180C


HP Deskjet 1180c and1220c Professional Series Printer and HP Deskjet 9300 and 1280 Printer - Troubleshooting a Blinking Print Cartridge Light Introduction The Print Cartridge light continues to blink with both cartridges properly installed and the Access Cover (also known as the top cover or lid) closed. Instructions The blinking Print Cartridge light may be caused by a faulty cartridge, the plastic case of the printer being dislodged or slightly out of position (which prevents the Access Cover from seating properly), the Access Cover sensor (also known as the top cover sensor or lid sensor), or by the actuator on the Access Cover. Follow the steps below to resolve the issue.
  1. With the printer turned on, open the Access Cover. The carriage will move out of the capping station and stop at one of the cartridge status icons located inside the printer under the Access Cover. The yellow arrow on top of the carriage will point to one of the cartridge status icons to indicate a good, empty, or faulty cartridge. See Figure 1 below.
    1. If the carriage stops in the cartridge’s OK position, indicated by the happy face in Figure 1, continue with Step 2.
    2. If a problem is indicated with one of the cartridges, remove the cartridge and verify that the cartridge part number is correct. The black cartridge part number is 51645A and the color cartridge part number is C6578A or C6578D.
    3. If the cartridge part number is correct, clean the electrical contacts on the cartridge with a soft, lint-free cloth. Do not touch or wipe the nozzle plate.
    4. If a faulty cartridge is still indicated after verifying the cartridge part number and cleaning the contacts on the cartridge, replace the cartridge.
    5. After replacing the cartridge, turn off and then turn on the printer to clear the cartridge error from the printer's memory. If the cartridge error cannot be cleared, the printer will require repair. If the carriage stops in the cartridge’s OK position, indicated by the happy-face in Figure 1, continue with Step 2. NOTE: The printer checks the status of both print cartridges before printing. Both the black and color cartridge must be functional and installed in the printer in order to print.
    Figure 1: Cartridge status icons c00001225.jpg Icon/Drawing Problem identified by the symbol Solution c00001226.jpg The color cartridge is missing, improperly installed, defective, or the wrong print cartridge is installed. 1. If there is no color cartridge in the cartridge cradle, insert a color cartridge.

    2. If there is a color cartridge in the cradle, remove the color cartridge and firmly reinsert it.

    3. Check to make sure the color cartridge is appropriate for the printer.

    4. If the problem persists, replace the color cartridge. c00001227.jpg The black cartridge is missing, improperly installed, the wrong print cartridge, or is defective. 1. If there is no black cartridge in the cartridge cradle, insert a black cartridge.

    2. If there is a black cartridge in the cradle, remove the black cartridge and firmly reinsert it.

    3. Check to make sure the black cartridge is appropriate for the printer.

    4. If the problem persists, replace the black cartridge. c00001228.jpg The color print cartridge is running low on ink. Replace the color print cartridge with a new color print cartridge. c00001229.jpg The black print cartridge is running low on ink. Replace the black print cartridge with a new black print cartridge. c00001230.jpg None. The print cartridges are working correctly. None. The print cartridges are working correctly.
  2. Close the Access Cover and wait for the printer to initialize. If the Print Cartridge light is still blinking, remove the Access Cover by following the steps below:
    1. Open the Access Cover and hold it open.
    2. Dislodge the Access Cover from the hinges with a sharp blow to the hinge area of the Access Cover and then remove the Access Cover.
  3. Install the Access Cover by following the steps below:
    1. Align the hinges on the Access Cover with the hinge pins on the printer.
    2. Push down firmly on the Access Cover until the hinges snap into position.
  4. Close the top cover and wait for the printer to initialize. If the Print Cartridge light is still blinking, the printer case may be dislodged or slightly out of position. To restore the printer case to the proper position, squeeze the printer by applying pressure to the front and back pressure points shown in Figure 2. Figure 2: Pressure points c00006497.jpg Firmly squeeze the pressure points on the printer case as shown in Figure 3. If the Print Cartridge light continues to blink, continue with step 5. Figure 3: Squeezing the pressure points c00006498.jpg
  5. If the Print Cartridge light is still blinking, push down firmly on the center of the Access Cover (the extra pressure may engage the sensor). If the Print Cartridge light quits blinking, remove the pressure from the Access Cover to see if the Print Cartridge light starts blinking again. Re-apply the pressure to the center of the Access Cover to see if the Print Cartridge light stops blinking again.
    1. If the Print Cartridge light quits blinking with pressure applied, the Access Cover is faulty and should be replaced.
    2. If the Print Cartridge light continues to blink even with pressure applied, the Access Cover sensor may be faulty and the printer will require repair.

Oct 18, 2007 | Office Equipment & Supplies

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