9 Close Door E.
Replacing a toner cartridge
Replace the specified toner cartridge (cyan, magenta, yellow, or black) when 88 Replace <color> toner
appears. The printer will not continue printing until the specified cartridge is replaced.
1 Make sure the printer is on and Ready or 88 Replace <color> toner appears.
2 Unpack the new cartridge, and set it near the printer.
3 Open Door E (front printer door).
4 Unlock the specified cartridge by turning the cartridge counterclockwise until the arrow‑shaped handle points
toward the unlock symbol.
Maintaining the printer 144
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