Ricoh B205 Service Manual page 364

OVERVIEW
6.1.3 ELECTRICAL COMPONENT DESCRIPTIONS
Refer to the electrical component layout on the reverse side of the point-to-point
diagram for the location of the components.
Symbol
Motors
M1 Scanner
M2 Polygonal Mirror
M3 Main
M4 Exhaust Fan
M5 Upper Paper Lift
M6 Lower Paper Lift
Toner Supply
M7
Magnetic Clutches
MC1 Upper Paper Feed
MC2 Lower Paper Feed
MC3 Upper Relay
MC4 Lower Relay
MC4 Registration
Switches
SW1 Main
SW2 Right Upper Cover
SW3 Right Cover
SW4 Right Lower Cover
SW5 Upper Paper Size
SW6 Lower Paper Size
SW7 New PCU Detect
SW8 Front Cover Safety
SW9 Operation
B205/B209/D007/D008
Name
Drives the 1st and 2nd scanners.
Turns the polygonal mirror.
Drives the main unit components.
Removes heat from around the fusing unit.
Raises the bottom plate in the 1st paper tray.
Raises the bottom plate in the 2nd paper tray.
Rotates the toner bottle to supply toner to the
development unit.
Starts paper feed from the 1st paper tray.
Starts paper feed from the 2nd paper tray.
Drives the upper relay rollers.
Drives the lower relay rollers.
Drives the registration rollers.
Provides power to the machine. If this is off, there
is no power supplied to the machine.
Detects whether the right upper cover is open or
not.
Cuts the +5VLD and +24V dc power line and
detects whether the right cover is open or not.
Detects whether the right lower cover is open or
not.
Determines what size of paper is in the upper
paper tray.
Determines what size of paper is in the lower
paper tray.
Detects when a new PCU is installed. Japan Only
Cuts the +5VLD and +24V dc power line and
detects whether the front cover is open or not.
Provides power for machine operation. The
machine still has power if this switch is off.
Function
6-4 SM