Engine Controller; General Description - Canon LBP6000 Series Service Manual

2.7.1.2 General description

LBP6000 / LBP6000B
Main controller receives the print information from the external devices (computer etc.) through the interface cable.
Print information is divided into 2 types such as CAPT command data to handle the printer status or specific data and the dot data to printout.
After the main controller receives the dot data, it creates the video data and send it to the engine controller.
CAPT command data is the data to monitor the printer status from the external device using interface.
When this data arrives, the main controller communicates with the engine controller and sends the printer status to the external devices.

2.7.2 Engine Controller

2.7.2.1 General description

LBP3100 / LBP3010B
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 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.
External device
USB interface
EEPROM
DRAM
Main controller
Video command data/Command status data
CAPT command data/dot data
ASIC
CPU
Video interface

Engine controller

F-2-40
Chapter 2
0025-1185
0019-7722
2-31