Chapter 2
2.4.6 Maintenance Cartridge Relay PCB
2.4.6.1 Maintenance cartridge relay PCB components
IC 1
a) EEPROM (IC1)
The
2.4.7 Power Supply
2.4.7.1 Power supply block diagram
Operation panel | Main controller PCB |
DC power supply
POWER ON
control circuit
+5V/+3.3V
generation circuit
Power supply
+32V
generation circuit
+5.1V
generation circuit
Transformer
AC inlet
100V to 240V
Noize filter circuit
Rectifying circuit
The power supply converts AC voltages ranging from 100 V to 240 V from the AC inlet to DC voltages for driving the ICs, motor, and others.
The voltage generator circuits include the +32 V generation circuit for driving motors, fans, and the +5.1V generator circuit for driving sensors, logic circuits. When in the power saving mode, the power supply cut outs the +32 V and the +5.1 V.
Power ON/OFF operation is controlled by the main controller PCB. When the upper cover is open, the power supply cut outs only the +32V power to the carriage.
2.5 Detection Functions with Sensors
2.5.1 Cover system
Upper cover lock switch (L) / (R)
The
When the upper cover close, the switches are pressed to detect the closed state of the upper cover.
The printer has one switch installed on the left and right sides each to prevent
Ink tank cover switches (L) / (R)
The
When an ink tank cover closes, the switches are pressed to detect the closed state of the ink tank cover.
Pressure release switch
The
When the paper release lever closes, the switch is pressed to detect the closed state of the paper release lever.
