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It is Time to Replace the Maintenance Box
Maintenance Box Handling Precautions
Read the following instructions before replacing the maintenance box.
❏ Do not touch the green chip on the side of the maintenance box. Doing so may prevent normal operation and
printing.
❏ Do not replace the maintenance box during printing; otherwise, ink may leak.
❏ Do not remove the maintenance box or open its cover except when replacing the maintenance box; otherwise
ink may leak.
❏ Do not reuse a maintenance box which has been removed and left detached for a long period. Ink inside the box
will have solidified and no more ink can be absorbed.
❏ Do not tilt the used maintenance box until after it is sealed in the plastic bag; otherwise ink may leak.
❏ Do not store the maintenance box in high or freezing temperatures.
❏ Keep the maintenance box out of direct sunlight.
❏ Do not drop the maintenance box or subject it to strong shocks.
❏ Do not touch the openings in the maintenance box as you may get smeared with ink.
Replacing a Maintenance Box
In some print cycles a very small amount of surplus ink may be collected in the maintenance box. To prevent ink
leakage from the maintenance box, the printer is designed to stop printing when the absorbing capacity of the
maintenance box has reached its limit. Whether and how often this is required will vary according to the number
of pages you print, the type of material that you print and the number of cleaning cycles that the printer performs.
When a message is displayed prompting you to replace the maintenance box, refer to the animations displayed on
the control panel. The need for replacement of the box does not mean that your printer has ceased to operate in
>
It is Time to Replace the Maintenance Box
Description
Select to continue using the remaining black ink. This window is displayed the next time
you print a similar job.
Select to continue using the remaining black ink. This window is not displayed until you
replace the black ink cartridge and it runs low again.
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Replacing a Maintenance Box
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Need help?
Do you have a question about the WF-7840 Series and is the answer not in the manual?
Questions and answers
How do I print photos and screen shots from my phone onto regular 8.5x11 paper in tray 1 or 2, (not the photo tray)?
Mismatching trays and paper size
To resolve mismatching trays and paper size issues with the Epson WF-7840 Series, follow these steps:
1. Check Paper Size Settings – Ensure the selected paper size in the printer settings matches the actual paper loaded in the tray.
2. Verify Paper Loading – Load the paper correctly in the cassette or rear paper feed slot, making sure it is aligned properly.
3. Select the Correct Paper Source – Adjust the paper source settings in the printer’s control panel to match the tray where the paper is loaded.
4. Use Supported Paper Sizes – Confirm that the paper size is within the supported range (up to 11×17 inches in the cassette and up to A3+ in the rear paper feed slot).
5. Avoid Automatic 2-Sided Printing on Certain Papers – If using loose-leaf or hole-punched paper, disable automatic double-sided printing.
Following these steps should resolve the issue.
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