Canon iPF6100 Service Manual page 135

Chapter 2
battery(BAT801) to assist the cleaning function.
When the power cord is plugged to the outlet, power is supplied to the RTC and therefore the lithium battery
power is not consumed.
Heat Enable signal control function
This function uses the pulse width to perform variable control of the time of application of the Heat Enable
signal to the nozzle heater board for each printhead nozzle array.
Linear scale count function
This function reads the linear scale when the carriage moves, thus generating the ink discharge timing. It also
counts the linear scale timing cycle using the reference clock to measure the carriage moving speed.
Dot count function
This function controls the discharge dots used as the information for Heat Enable signal control, maintenance
jet control, cleaning control, and remaining ink level for each nozzle array.
Operation panel control function
This function controls serial communication with the operation panel.
PWM control function
This function controls driving of the suction fan and mist fan as well as the temperature of the printhead.
Remaining ink level detection function
This function detects the remaining level of each color of ink based on the signal received from the hollow
needle mounted in the ink tank unit.
LED control function
This function controls the LEDs on the ink tank unit.
I/O port function
This function controls input signals from sensors.
Power ON/OFF control function
This function controls turning on/off of the drive power (26 V and 21.5 V) supplied from the power supply PCB.
Head DI sensor read control function
This function controls read operation by the head DI sensor.
Multi sensor control function
This function controls the LED, adjusts the gain, and controls obtainment of the reading for the multi sensor.
EEPROM control function
This function controls the EEPROMs of individual ink tanks, the maintenance cartridge EEPROM, the
EEPROM on the maintenance cartridge relay PCB, and the head EEPROM in addition to the on-board
EEPROM.
Motor control function
This function controls the carriage motor, feed motor, valve motor, spur motor, pump motor, lift motor, and
cutter motor based on the input signals from sensors.
b) Driver IC (IC3101)
This IC generates a carriage motor control signal based on the control signal from the ASIC.
c) Driver IC (IC2801)
This IC generates feed motor and valve motor control signals based on the control signal from the ASIC.
d) Driver IC (IC2901)
This IC generates pump motor, cutter motor and spur motor control signals based on the control signal from the
ASIC.
e) Driver IC (IC3001)
This IC generates a lift motor control signal based on the control signal from the ASIC.
f) DIMMs (IC601,IC602,IC603,IC604)
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