Brother HL-3450CN Service Manual page 91

CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS
(1) Control Block Diagram (Refer to Fig.4-33.)
No.
1
2
3
4
5
6
7
Name
Sequence Control
Temperature Control
Toner Empty Sensing Control
Control Panel Control
Error Processing Control
Interface Control
Laser Control
Function
To control the sequence of printer
operations.
To control the temperature of the fixing
unit.
To detect the toner empty status of each
toner cartridge.
To control the control panel indications
and the operational signals.
To sense errors occurring in the printer
and control the stop procedures.
To control the receipt and transmission of
the interface signals from the external
controller.
To control laser scanning and laser power.
4-38