If you perform this reset once, it is a temporary fix. If you have to do it twice, you absolutely must open the printer and clean the physical ink pads.
The Epson WF-3720 uses a chip on each ink cartridge to track ink usage. Sometimes, even after replacing a cartridge, the printer erroneously claims it is empty. Official Reset (Via Ink Replacement Menu)
To perform a full reset on an Epson WorkForce Pro WF-3720, you can choose between a factory reset to clear settings or a maintenance reset to resolve "Service Required" errors 1. Factory Reset (Via Control Panel) how do i reset my epson wf 3720 printer full
The WF-3720 uses chips on cartridges. Resetting the printer DOES NOT reset ink levels. You need to:
The error message is cleared. Your printer will function again. Note: Eventually, the physical pad may overflow if you ignore it, so place an absorbent sheet under the printer. If you perform this reset once, it is a temporary fix
This method works on most Epson WorkForce Pro models, including the WF-3720.
If your printer displays an error stating "A printer's ink pad is at the end of its service life," a standard factory reset will not work. This requires a specific utility. Sometimes, even after replacing a cartridge, the printer
or an Adjustment Program to reset the internal counter to zero. This typically requires connecting the printer to a computer via USB and may require a purchased "Reset Key". Hardware/Power Reset
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