Warming up/ Cooling down or stop printing:
The printer is either warming up or cooling down and stops printing until the internal temperature of the printer lowers.

Warming UP Cooling Down
Ready to print:
The printer is ready to print. Pressing control panel button wakes up the printer to Ready mode.
Receiving data:
The printer is either receiving data from the computer or processing data in memory.
Data remaining in memory:
Print data remains in the printer memory. If the Data LED is on for a long time and nothing has printed, press the contorol panel button to print the remaining data.
Toner low:
Indicates that the toner cartridge is nearly empty. Purchase a new toner cartridge and have it ready for when Toner Empty is indicated.
Toner empty:
Replace the toner cartridge with a new one. To see how to replace the toner cartridge, click here.
Drum unit near end of life:
The drum unit is near the end of its life. We recommend that you obtain a new drum unit to replace the current one. To see how to replace the drum unit, click here.
Paper jam:
Clear the paper jam. To see paper jams and how to clear them, click here. If the printer does not start printing, press the control panel button.
No paper:
Put paper in the printer. Then press the control panel button.
Misfeed:
Put the paper back in properly, and then press the control panel button. The printer will start printing again.
Front Cover Open:
The front cover is open. Please make sure that the front cover is closed.
Service Call:

Laser BD Malfunction Fuser Malfunction Scanner Malfunction

ROM Error D-RAM Error Service A

Service B Engine Interface Error NV-RAM Error

Main Motor Malfunction CPU Runtime Error
If you see any of these service call indications, turn off the power switch, wait a few seconds, and then turn it back on and try to print again.