LED Color Normal Status
LED1 GREEN Lights
LED2 GREEN Lights
LED3 YELLOW Flashes
LED4 YELLOW Flashes
LED5 YELLOW Flashes
IOB
The IOB (Input/Output Board) controls each sensor, motor, solenoid, and high voltage supply board. It
contains the drive circuits for these components. It also performs process control, transfers serial data
between the machine and peripherals, and controls the fusing unit.
• The paper cassette sensors and motors are controlled by the RFDB (Roll Feeder Drive Board).
• The pressure motors are controlled by the FPDB (Fusing Pressure Drive Board).
4. Replacement and Adjustment
396
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