Ricoh D093, Service Manual

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Board LEDS, DIP Switches
D093/D094 7-70 SM
7.6.2 MCU
The MCU (Main Control Unit) performs system control, base engine control, scanner control,
and also controls the SIPU. The MCU also controls:
ƒ I/O for the base engine (high voltage power supply, motors, sensors, solenoids, clutches,
fusing temperature, customer support systems, etc.)
ƒ Scanning signals (sensors, motors)
ƒ
Power supply
ƒ Scanner motor output
The following LEDs indicate the status of elements operation on the MCU.<0}
LED Color LED
Definition
Downloading
Normal
Operation
Executing Finished
LED 1 Red eSOC status ON OFF OFF
LED 2 GREEN eSOC status OFF FLASH FLASH
LED 3 GREEN Trio2 Status OFF ON ON