Ricoh Aficio BP20 - Power Supply

G144
Ricoh Europe B.V.
Technical Training Centre
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53
Slide 53
Power Supply
 High voltage power supply (HVPS)
 Switching mode power supply (SMPS)
5. Engine
More on the Power Supply
 The SMPS and HVPS are on the same board.
 The SMPS supplies DC power to the system.
¾ It takes either 110V or 220V and outputs the +5V and +24VS to the
main and other PBAs.
 The HVPS creates the high voltage of THV/MHV/Supply/Dev and supplies it
to the toner cartridge.
¾ The CPU modifies the voltage settings to provide ideal voltages to
create images.
¾ The HVPS part uses the 24V and outputs the high voltage for
THV/MHV/BIAS.
¾ Then the outputted high voltage get supplied to the toner, OPC
cartridge and transfer roller.