Printer Electrical System; Outline; Overview - Canon WS8400 Service Manual

2.4 Printer Electrical System

2.4.1 Outline

2.4.1.1 Overview

The printer electrical system consists of the system controller, engine controller, motor driver, and power supply, all of which are mounted at the rear of
the printer; the carriage relay PCBs, head relay PCBs, and printhead, which are located in the carriage unit; the operation panel on the upper right cover;
and other electrical components, such as the sensors and motors.
The system controller manages image data, and the engine controller manages all electrical components. The other relay PCBs and drivers control the
various functions under the management of the engine controller.
System controller
Host
computer Operation panel
Interface control Operation panel
function control function
Image data control function and RGB
multi-data 6-color binary conversion
Image data control function
-Mask conversion
Ink tank unit
-Differential conversion
Ink tank Remaining ink level
detection function
Purge unit
Motor control
function
Carriage motor
motor excitation
signal generation
Feed motor
function
Sensors
Clutch
Fans
Solenoids
Motor driver
Carriage unit Print head
Head relay PCB
Temperature reading
control function
Sensors
DI sensor reading
control function
Ink tube unit
Carriage relay PCB
Image data demodulation
function
Printhead driving power
supply generation function
Engine controller
Sensor detection function
Clutch control function
Fan control function
Solenoid control function
+3.3Vgeneration
function
+5.1Vgeneration
function
+26.5Vgeneration
function
Power supply
F-2-30
Sensors
Optional connector
assembly
AC inlet
Chapter 2
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