Toner Cartridges, Maintenance Kits and Parts

One Item
The EP5503 uses a single toner cartridge, KNI 946594. KNI 946594 yields 20000 pages.
The KNI 946594 cartridge has an approximate yield of 20000 pages.
The "Supply Problem" notice on the EP5503 is typically a recognition fault, not a defective cartridge. Start by turning the printer off for 30 seconds. Reseat the cartridge, clean its chip contacts with a dry cloth, then power back on. If nothing changes, the fix is a fresh KNI 946594.