Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
I apologize for the delay in my response.
The issue may happen because of the following reasons.
An ink tank(s) is not seated properly.
Paper is jammed or there is an object inside the printer.
The printer needs to be reset.
Or the encoder film/strip may need to be cleaned.
So, first check if the ink tanks are seated properly.
Remove all the ink cartridges from the machine.
Then clean the contacts on the cartridges as well as inside the machine itself. Inside means the printhead where the cartrdige seats.
Do this with a small amount of warm water on a cotton swab until no ink comes off on the swab.
If any of the other cartridges are low, empty, leaking or bulging replace them.
Then turn off the machine and unplug it for 5 minutes.
Plug it back it and wait for the insert cartridges message.
Insert the cartridges and check to see if the problem is still there.
Second, check if there a paper is jammed or any foreign object inside the printer.
Then, reset the printer. Turn off the printer, unplug all its cables and wait for 5 minutes. Then, plug in the cables and restart the printer. Check if the error remains.
If the issue still persists, follow the instructions below.
There is a thin (1/4"wide) plastic strip running across the width in front of and below the drive belt. This is part of the optical encoder that tells the print-head where it is. If you look closely, there are fine black vertical lines on this strip. If the strip gets a piece of crud on it, you get an error during the start-up sequence. Gently clean this strip with a damp lint-free tissue. This also fixed a gap in the printing running lengthwise (not across the page like a clogged head).
If the issue still persists, try the following.
The last solution is to grease the track the print carriage slides along. Apply grease to as much of the track as you can reach without disassembling the printer and rub some along the underside of the track. You will probably still get the error at first, but keep opening and closing the printer so the carriage slides back and forth and hopefully it will go away after a few tries.
If the issue persists, or you have any questions, please be back and let me know.
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