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Technical Overview > Controller System > Engine Controller > General description
Technical Overview > Controller System > Engine Controller > General description
Controller System
Main Controller
■
Overview
The Main Controller receives print information from the Reader and external equipment
(computer, etc.). Video data is created from the received print information, and is sent to the
Engine Controller.
There are 2 types of print information from the external equipment: engine command data to
exchange the status or unique information of a printer and dot data for printing.
In the case of receiving dot data, video data is created and is sent to the Engine Controller.
In the case of receiving engine command data, printer status is returned to the external
equipment after communicating with the Engine Controller.
EXTERNAL
DEVICE
USB
INTERFACE
CONTROL PANEL
ENGINE
CONTROLLER
DRAM
MAIN CONTROLLER
Flash ROM
READER
CONVERTER
ANALOG TO DIGITAL
MOTOR DRIVER
DC/DC CONVERTER
CPU
ASIC
FAX MODEM
NCU
EXT
HANDSET
TEL
FAX LINE
F-2-3
Engine Controller
■
General description
Engine controller is the circuit to control the operation sequence of the host machine and it is
controlled by the CPU inside the engine controller.
When the Power Switch (SW1100) is turned ON and DC power is supplied through the low
voltage power inside engine controller, CPU starts the printer operation control.
Then, CPU drives the loads such as laser diode, motors and solenoids etc. according to the
image data that is input by the main controller when status becomes stand-by mode.
The following is the block diagram of this circuit.
AC input
Fixing
assembly
Motor
M
Transfer roller
High-voltage
power supply
Low-voltage
power supply
Laser scanner
unit
Solenoid
Main controller
Toner Cartridge
Sensor
CPU
Switch
Engine controller
Fixing control
F-2-4