What is an HP Officejet 6700 printer error code 20?

SOURCE: HP OFFICEJET 4215 cartridge error

Try this while standing on one leg.

1. OPen ink caridge lid.
2. Remove the affected cartridge.
3. Close lid
4. Try to print. This will fail, but that is ok.
5. Open the ink cartridge door again.
6. Remove the other cartridge.
7. Unplug the unit.
NOTE FOR THE NEXT STEP
This can be risky and I asume no responsibility for pressng too ******* the contact points, havng too much alcohol, using the wrong kind of alcohol, or not using alcohol or other such problems that can occur.

8. Using ONLY alcholo lightly brushthe contact points
9. Lightly clean the cartridge cotact points.
10. Plug in the unit
11. Install the cartridges.
12. Go through the alignment process.
13. Switch to the other leg, those with one leg only are exempt.
14. You just might be ready to print again.

I know this sounds crazy but this just worked for me.

Callan

SOURCE: Error message: "Door Open"

HI there,
Follow the steps below:
Step one: Close the print cartridge access door
1.Verify that the print cartridge access door is completely closed. It may appear to be closed, but if it is not completely closed, the error message will display. Verify that there are no obstructions blocking the door.
2.If you are unsure how to close the print cartridge access door on your model, consult your User Guide for more information.
Figure 1: Examples of closing the print cartridge access door (your model may vary)
If you have attempted to completely close the access door and the error still appears, there may be a problem with the door sensor and the unit may require service.

Step two: Service your product
If you have completed all the steps listed above and are still experiencing a problem, service the product.

Good Luck!!!

neo

SOURCE: error code i hp 4255 officejet printer

have problem in my printer hp officejet 4255 oll-in-one it give message ERROR : 0XF0aF8005 pleas help me I can repair the priter if u can diagnose the error code

SOURCE: ERROR :0xf0af8005

Solution one: Reset the product

1. Without turning off the product, disconnect the USB cable from the rear of the product. NOTE: The USB cable connects to the port on the back of the product. The port is labeled with the USB icon ( ). Figure 1: Example USB connection (your product might not look exactly the same as this example)
2. Remove the cartridges from the product.
3. Wait for the ' Insert Cartridges ' message to display on the control panel.
4. Disconnect the power cord from the back of the product.
5. Wait 60 seconds.
6. Reconnect the power cord. If the product does not automatically turn on, press the Power button ( ).
7. Reinsert the cartridges, and then close any open doors on the product.
8. If you receive a prompt to print a calibration page, do so.
9. Reconnect the USB cable to the rear of the product, and then try printing again.

SOURCE: HP OFFICEJET 4355 ,cartridge error

you have to use genuine cartridges