Msens1 (Proximity Sensor), Msens2 (Proximity Sensor Board) - Ricoh MP C3004 Field Service Manual

BCU
Controls the engine.
IPU
Processes digital signals.
The SIO functions are included in the IPU for this machine. Thus the SIO board is removed.
SIO Function
Circuit which controls generation of SBU power, scanner internal sensor I/F, carriage drive
stepping motor and LED drive.

MSENS1 (Proximity Sensor), MSENS2 (Proximity Sensor Board)

Proximity Sensors and Proximity Sensor Board are equipped.
People are detected by IR sensors which sense the temperature difference between the human body and
the temperature of the machine location.
IOB
Controls the MFP engine sensor, motor and solenoid.
FCU
Controls the fax program.
OPU
Controls the control panel.
HVP (composite high-voltage power supply TTS/CB)
Generates the high-voltage power required for process control. Divided into two units, i.e., transfer (TTS)
and electrostatic/developing (CB).
PSU
Generates DC power from a commercial AC power supply, and supplies it to each control circuit.
Comprises an A/C drive circuit for controlling the fixing heater.
Electrical parts
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