Control System; Control Of The Print Process - Brother HL-2600CN Service Manual

2.2

Control System

2.2.1

Control of the Print Process

A Micro CPU mounted on the MCTL PCB controls the print processes.
<Print Sequence Diagram>
Control
Panel
Host
Computer
I/F
Control
I/F
Controller
Paper Sensor (F.CL)
Oil Sensor (OIL)
Fusing Unit
(1) Control Block Diagram (Refer to Fig.4-33.)
No.
1
2 Temperature Control
3 Toner Empty Sensing Control
4 Control Panel Control
5 Error Processing Control
6
7
Main Cooling
Motor 2 Fan OZ Fan (EX) 2
MCTL (Engine Controller)
Sequence Control
Temperature Control
Toner Empty Sensing Control
Control Panel Control
Error Processing Program
High Voltage Unit
DC Power
Supply Unit
Interlock Switches
Fig.4-33
Name
Sequence Control
Interface Control
Laser Control
Cooling
DM
Belt
Drum
Sensor
Sensor
Paper Sensor (P.EN)
Paper Sensor (PT1)
Paper Size Sensor (PSU)
Paper Sensor (EXF)
OHP Sensor 3 (OHP)
Belt Sensor (DPJ)
Paper Sensor (F.CL)
Temperature Sensor for Fusing Unit
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.
IV-34
Scanner
Motor
ATC (4 pcs.)
LDU
Y M C K
Laser Control
CPU
Paper Sensor (D.EN)
Belt Sensor (PBS)
Oil Sensor (OIL)
Paper Sensor (PT2)
Waste Toner Sensor (WTS)
Toner Sensor ASSY
Developer Position Sensor
Paper Full Sensor
Function
PDU