Lexmark 5021-0XX - Manual (Page 73)

General information 1-47
5021-0XX
Control system structure
Electrical system and function
The engine board controls most of the main electrical parts in this
printer.
No. Control process Function
1 Print process
control Controls print process from paper feed
through paper exit.
2 Laser output
control Automatically controls laser output to the
default.
3 Fuser
temperature
control Controls fuser heater, allowing heated
roller to reach default temperature.
4 Toner sensing
control Controls sensing of toner empty status.
5 Interface control
(video signal) Processes the input and output signal with
external controller computer.
6 Operator panel
indicator Displays printer operation status.
7 Error control Controls safe stop procedures when errors
occur.