Operation Of Each Block; Fan/Motor Control - Canon iR C1020 Series Service Manual

Chapter 11

11.1.2 Operation of Each Block

CPU (IC1001)
The CPU is a 16-bit single-chip processor with built-in ROM and RAM.
It controls the following printer operation according to the control program stored in the ROM.
- Sequence control of the printer engine
- Control of the ASIC
- Control of the fixing assembly
- Control of solenoid
- Control of sensors/switches
- Control of the fixing control circuit (relay drive)
ASIC (IC1010)
The ASIC (Application Specific IC) is an IC used in an interface such as an IC, memory, and external equipment.
It controls the following printer operation according to the command from the CPU.
- Control of the laser scanner unit
- Communication with the main controller
- Control of the high-voltage power PCB
- Control of motors
- Control of fans
- Write/Read EEPROM
- Control of the memory controller PCB
Motor Driver IC (IC401, IC802, IC803)
The motor driver IC controls each motor according to the command from the CPU or ASIC.
Reset IC (IC1007)
The reset IC monitors +3.3 V voltage, and resets the CPU and ASIC when the power is turned ON.
EEPROM (IC1007)
The EEPROM stores various backup data.

11.1.3 Fan/Motor Control

The machine uses nine motors in total for paper feeding and image formation.
Name
Fixing motor (M1)
Pickup motor (M4)
ETB motor (M5)
M drum motor (M6)
Motor
C drum motor (M7)
Y drum motor (M8)
Bk drum motor (M9)
Duplex feed motor (M10)
Reverse motor (M11)
Main unit fan (FM1)
Fan
Duplex fan (FM2)
11-2
T-11-1
Purpose
To drive the pressure roller and delivery roller
To drive engagement/disengagement of the developing roller
To drive engagement/disengagement of the pressure roller
To drive the pickup roller of the machine
To drive the ETB, To drive engagement/disengagement of the transfer roller DC motor
To drive the developing roller, photosensitive drum, and stirring plate
To drive the duplex feed roller
To drive the reverse roller
To exhaust heat from the inside of the machine
To exhaust heat from the reverse unit
Type Fault detection
DC motor Provided
Stepping motor Not provided
Provided
DC motor Provided
Stepping motor Not provided
Stepping motor Not provided
DC motor Provided
DC motor Provided
0020-2653
0020-2654