Control System - Control Of The Print Process - Brother HL-3450CN Service Manual

2.2

Control System - Control of the Print Process

A Micro CPU mounted on the MCTL PWB controls the print processes.
<Print Sequence Diagram>
Control
Panel
Host Computer
I/F
I/F
Controller
Control
Video
Controller
Cleaning Roller
Sensor
Oil Sensor
Fusing Unit
Main
Cooling
Cooling
Motor
Fan Fan
Sensor
MCTL (Engine Controller)
Sequence Control
Temperature Control
Toner Connection Control
Control Panel Control
Error Clearance Program
High Voltage Unit
DC Power
Supply Unit
Interlock Switches
Fig. 4-33
4-37
DM
ATC (4 pcs.)
Belt
Drum
Sensor
Y M C
CPU
Paper Empty Sensor
Paper Feed Sensor
Toner Empty Sensor
Paper Size Sensor
Paper Exit Sensor
OHP Sensor
Drum Jam Sensor
Cleaning Roller Sensor
HL-3450CN SERVICE MANUAL
Scanner
Motor
LDU
PD
K
Laser Control
Drum Encoder
Belt Sensor
Oil Sensor
Paper Full Sensor
Waste Toner Sensor
Toner Key Sensor
Developer Sensor
Temperature Sensor