Epson Maintenance Box C12C939891

Product details

• Brand: Epson
• Product code: C12C939891
• Product type: Maintenance box / waste‑ink collector
• Function: Captures waste ink from print‑head cleaning and maintenance operations to prevent internal contamination and ink leaks.

Compatible printer series

EcoTank ET series

• ET‑1910
• ET‑2910 / ET‑2911 / ET‑2912 / ET‑2914 / ET‑2915 / ET‑2916
• ET‑2920 / ET‑2921 / ET‑2922 / ET‑2925 / ET‑2926 / ET‑2927
• ET‑4900 / ET‑4905

EcoTank L series

• L1350 series
• L3300 / L3301 / L3302 / L3305 / L3306 / L3308
• L3350 / L3351 / L3352 / L3356
• L3360 / L3361 / L3362 / L3366
• L5390 / L5396

How it works and when to replace

• The printer monitors the maintenance box’s fill level internally.
• When the box is nearly full, the printer shows a warning message and may eventually stop printing until the box is replaced.
• Replacement is designed to be user‑serviceable: you open the maintenance‑box cover, remove the old box, insert the new one and reset the counter via the printer menu or driver