The ET-4800 does not have a user-replaceable waste ink box like some EcoTank models (e.g., ET-2750). The waste pad is inside the printer, buried under the printhead assembly, usually made of absorbent felt.

This is the tool technicians use.

– This means disassembling the printer (removing the scanner, case, and printhead carriage assembly) to access the pad, swapping it, and then resetting the counter. It’s time-consuming and requires technical skill.

During initial configuration, printhead cleaning cycles, and nozzle flushes, the printer forces ink through its system to prevent clogs. The excess liquid is pumped into a small plastic housing located at the base of the printer containing ultra-absorbent cotton sponges.

Use a screwdriver to remove the single screw holding the back plate in place.

– This requires a service utility (not the normal Epson software). You can find third-party reset tools online for ~$10-20. After resetting, you can continue printing, but the pad will eventually overflow and leak ink inside the printer.