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10 August, 2001
ELECTRICAL COMPONENT DESCRIPTIONS
1-11
Overall
Information
1.5 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
Name
Function
Motors
M1
Scanner
Drives the 1st and 2nd scanners.
M2
Polygonal Mirror
Turns the polygonal mirror.
M3
Main
Drives the main unit components.
M4
Exhaust Fan
Removes heat from around the fusing unit.
M5
Upper Paper Lift
Raises the bottom plate in the 1st paper tray.
M6
Lower Paper Lift
Raises the bottom plate in the 2nd paper tray.
M7
Toner Supply
Rotates the toner bottle to supply toner to the
development unit.
Magnetic Clutches
MC1
Upper Paper Feed
Starts paper feed from the 1st paper tray.
MC2
Lower Paper Feed
Starts paper feed from the 2nd paper tray.
MC3
Upper Relay
Drives the upper relay rollers.
MC4
Lower Relay
Drives the lower relay rollers.
MC4
Registration
Drives the registration rollers.
Switches
SW1
Main
Provides power to the machine. If this is off, there is
no power supplied to the machine.
SW2
Right Upper Cover
Detects whether the right upper cover is open or not.
SW3
Right Cover
Cuts the +5VLD and +24V dc power line and detects
whether the right cover is open or not.
SW4
Right Lower Cover
Detects whether the right lower cover is open or not.
SW5
Upper Paper Size
Determines what size of paper is in the upper paper
tray.
SW6
Lower Paper Size
Determines what size of paper is in the lower paper
tray.
SW7
New PCU Detect
Detects when a new PCU is installed.
SW8
Front Cover Safety
Cuts the +5VLD and +24V dc power line and detects
whether the front cover is open or not.
SW9
Operation
Provides power for machine operation. The machine
still has power if this switch is off.
Sensors
S1
Scanner HP
Informs the CPU when the 1st and 2nd scanners are
at home position.
S2
Platen Cover
Informs the CPU that the platen cover is in the up or
down position (related to the APS/ARE functions).
S3
Original Width
Detects original width. This is one of the APS (Auto
Paper Select) sensors.
S4
Original Length 1
Detects original length. This is one of the APS (Auto
Paper Select) sensors.