Brother International HL-2600CN Service Manual - Page 85

2.2 2.2.1 Control System Control of the Print Process A Micro CPU mounted on the MCTL PCB controls the print processes. Host Computer Control Panel Main Motor 2 Cooling Cooling Fan OZ Fan (EX) 2 DM Scanner Motor Belt Sensor Drum Sensor ATC (4 pcs.) Y MCK LDU PDU I/F Controller I/F Control MCTL (Engine Controller) Sequence Control Temperature Control Toner Empty Sensing Control Control Panel Control Error Processing Program CPU Laser Control Paper Sensor (F.CL) Oil Sensor (OIL) Fusing Unit DC Power Supply Unit High Voltage Unit Interlock Switches Paper Sensor (P.EN) Paper Sensor (D.EN) Paper Sensor (PT1) Belt Sensor (PBS) Paper Size Sensor (PSU) Oil Sensor (OIL) Paper Sensor (EXF) Paper Sensor (PT2) OHP Sensor 3 (OHP) Waste Toner Sensor (WTS) Belt Sensor (DPJ) Toner Sensor ASSY Paper Sensor (F.CL) Developer Position Sensor Temperature Sensor for Fusing Unit Paper Full Sensor Fig.4-33 (1) Control Block Diagram (Refer to Fig.4-33.) No. Name Function 1 Sequence Control To control the sequence of printer operations. 2 Temperature Control To control the temperature of the fixing unit. 3 Toner Empty Sensing Control To detect the toner empty status of each toner cartridge. 4 Control Panel Control To control the control panel indications and the operational signals. 5 Error Processing Control To sense errors occurring in the printer and control the stop procedures. 6 Interface Control To control the receipt and transmission of the interface signals from the external controller. 7 Laser Control To control laser scanning and laser power. IV-34