Electrical Components - Ricoh FW780 Service Manual

ELECTRICAL COMPONENTS

1.6 ELECTRICAL COMPONENTS
Refer to the electrical component layout on the reverse side of the Point to Point
index (Water proof paper).
Name
Motors
Main
Exhaust Fan
Original Feed
(B048 only)
Magnetic Clutches
Registration
Toner Supply
Solenoids
Pick-off Pawl
Switches
Main
Original & Paper
Feed Safety
Fusing Exit Safety
Used Toner Cover
Sensors
Door Open
Toner Density
Original Registration
Light
Entrance Feed
Registration
Exit
Original Entrance
(B048 only)
Original Rear
(B048 only)
Exit Cover Open
Toner Overflow
B047/B048
Drives all mechanical components except the fans
(DC Motor).
Removes the ozone built up around the drum
section to the ozone filter (DC Motor).
Drives the original feed motor (DC Motor).
Drives the registration rollers.
Turns on to supply toner to the development unit.
Moves the pick-off pawls against the drum.
Supplies power to the copier.
Cuts AC power when the original or paper feed unit
are opened.
Cuts AC power when the fusing exit unit is opened.
"Door Open" is displayed on the operation panel
when the used toner cover is open.
Indicates "Door Open" on the operation panel and
prevents operation.
Detects the density of toner in the developer.
Activates when the leading edge of the original
passes the front of the exposure glass.
Measures the intensity of the exposure lamp's
output.
Activates when copy paper is inserted (jam
detector).
Activates when copy paper arrives at the
registration rollers (jam detector).
Detects jams through the fusing exit unit.
Measures the original length and detects jams.
Detects original jams.
Indicates "Door Open" in the operation panel and
prevents operation.
Detects whether the used toner tank is full or not.
1-6
Function Index. No.
32
5
45
30
31
6
17
18
12
48
29
26
4
27
24
25
7
43
44
47
46
SM