Lexmark MS310
‑ On
‑ Blinking
If the light sequence matches the light sequence in the preceding illustration, then press twice to see the supplemental light sequence.
If the supplemental light sequence matches the light sequence in the preceding illustration, then try one or more of the following:
Note: If the message appears after reinstalling the supply, then replace the imaging unit. The imaging unit may be defective or a non‑genuine Lexmark supply. For more information, see Using genuine Lexmark parts and supplies.