Engine Control System; Main Controller; General Description; Engine Controller - Canon LBP3010 Series Service Manual

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Service manual (146 pages)

Table of Contents

Chapter 2

2. 200V series products carry FU101 fuse only.

2.6.1.2.2 Safety function

LBP3100 / LBP3010B

The host machine equips the function of stopping 24V of fixing assembly and the high voltage power unit to avoid users and engineers from getting burned or

electric shock.

When the cartridge door is opened, the interlock switch (SW501) is turned off and 24V supplied to fixing assembly and the high voltage power unit is shut.

Engine controller CPU determines the door open when each interlock switch is turned OFF.

2.7 ENGINE CONTROL SYSTEM

2.7.1 Main Controller

2.7.1.1 General description

LBP3100 / LBP3010B

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.

2-16

External device

USB interface

EEPROM

DRAM