Brother International HL-2400C Service Manual - Page 78
printer: Fusing Temperature Control, Laser Output
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(1) Print PCB (Refer to Fig. 4-29.) No. Name Function To receive the print data from the host computer, 1 Video Controller PCB convert it into image data and then send the printing image data to the MCTL PCB. To control the sequence of processes of the 2 Engine Controller (MCTL) PCB printer: Fusing Temperature Control, Laser Output Control, Control Panel Indications, Toner Empty Sensing Control, Error Processing Control, Interface Control. 3 Control Panel PCB To display the printer's operation status and support the control panel switches. 4 LDU PCB To control the drive and output to the laser diode in the scanner unit. 5 PDU PCB To sense the emission of the laser diode and the beam position in the scanner unit. 6 Erase Lamp To discharge the OPC belt with the LEDs. To send the signals from the sensors to the MCTL 7 IOD1 PCB PCB, and to drive the outputs from the MTCL PCB to the motors, clutches and solenoids. 8 IOD2 PCB - Ditto - 9 DC Power Supply (LVPS) PCB To provide the printer with the power for printer control. 10 High-voltage Power Supply (HVU) PCB To provide the printer with the high voltage power supplies necessary for the printing process. IV-29