Ricoh BE-C1 D046 Field Service Manual page 398

4. Replacement and Adjustment
4
LED
LED1
LED2
LED3
LED4
LED5
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).
396
Color
GREEN
GREEN
YELLOW
YELLOW
YELLOW
Normal Status
Lights
Lights
Flashes
Flashes
Flashes