Canon imagePROGRAF W6200, Service Manual, Page: 155 / 311

Feed motor control
This function performs rotation detection of the encoder slit and control of the feed
motor speed and position based on the control signals from the CPU.
I/O port
This function performs I/O control from the sensors and controls the driving units
of the motors, clutch, solenoids, and other parts.
c) LVDS Driver (IC405)
The image data generated by the ASIC (IC423) undergoes differential processing to
reduce noise and then is sent to the carriage relay PCB.
d) SDRAM (IC434, IC435)
The 16-MB SDRAM is connected to the 32-bit data bus and is used as an image
buffer when receiving the print data.
e) Flash ROM (IC417)
The 8-MB FLASH ROM is connected to the 16-bit data bus and stores a printer
control program and mask patterns.
f) SDRAM (IC416)
The 8-MB SDRAM is connected to the 16-bit data bus and is used as a CPU work
memory.
g) EEPROM (IC421)
The 16-Kbit EEPROM stores the printer adjustment values.
It also is used to store the service mode history (P-SETTING, WARNING, ERROR).
h) Motor driver (IC419, IC424)
This motor driver is used to drive the carriage motor, which is a DC motor with
built-in software servo.
i) Motor driver (IC410, IC411)
This motor driver is used to perform constant-voltage driving of the pump motor,
which is a two-phase stepping motor.
j) Motor driver (IC412)
This motor driver is used to perform constant-current driving of the purge motor,
which is a two-phase stepping motor.
k) Motor driver (IC420)
This drives the feed motor, which is a DC brush motor.
l) Motor driver (IC431)
This drives the valve motor, which is a DC brush motor.
m) Regulator IC (IC428)
The regulator IC generates the ASIC internal driving power supply (2.5 V).
n) Regulator IC (IC437)
The regulator IC generates the CPU internal driving power supply (1.9 V)
Part 4: Technical Reference
W6200
4-46