HP Deskjet 6940 - Manual (Page 116)

If the border appears above the tear-off tab:
●
Align the print cartridges .
● Verify that no problem exists with the source image. For example, if you are printing
a scanned image, verify that the image was not crooked when it was scanned.
Error messages
Out of paper message
If you receive an out of paper message, follow these
guidelines .
"There was an error writing to USB port"
The printer might not be receiving correct data from another USB device or USB hub.
Connect the printer directly to the USB port on the computer.
"Two-way communication cannot be established" or "Printer not responding"
The printer might not be able to communicate with the computer if the USB cable is too
long.
If you receive this error message, make sure that the USB cable is not greater than 5
meters (approximately 16 feet, 5 inches) in length.
Incorrect print cartridge message
The printer can only print when the correct print cartridges are installed. If you receive
an incorrect print cartridge message,
follow these instructions .
Print cartridge problem message
If you receive a message stating there is a problem with the print cartridge, the print
cartridge might be faulty. Follow
these instructions to resolve the problem.
"Print cartridge carriage is stalled"
Follow
these steps if the printer stalls while you are printing a document.
Chapter 11
114 HP Deskjet 6940 series