Lexmark MS310
‑ Blinking
‑ On
If the printer control panel light sequence matches the light sequence in the preceding illustration, then you may need to order an imaging unit. If necessary, press on the printer control panel to continue printing.
Understanding imaging unit yield on Lexmark's MS/MX 310, 410, 510, 61x, 71x, and 81x devices.
31.6x Error Code Reinstall Missing or Unresponsive Imaging Unit (IU)