Ricoh B089 Service Manual page 462

ELECTRICAL COMPONENT DESCRIPTIONS
1.4 ELECTRICAL COMPONENT DESCRIPTIONS
Symbol Name
Motors
M1 Tray Motor
M2 Tray Lift Motor
Rear Fence
M3 Motor
Sensors
Right Tray
Paper End
S1
Relay
S2
Upper Limit
S3
Lower Limit
S4
Paper Height
S5
1, 2, 3
Paper Height
S6
4, 5
Rear Fence
S7
Home Position
S8 Tray (Switch)
Side Fence
S9
Open/Closed
Rear Fence
S10
Return
Left Tray
S11 Paper End
Solenoids
Side Fence
SOL1
Magnetic Clutches
MC1 Paper Feed
MC2 Relay
PCBs
Main
PCB1
Switches
SW1 Right Cover
A862/B391
Function
Drives all rollers.
Drives the paper tray up or down.
Moves the rear fence to transfer the paper
stack from the paper storage (left) side of the
tray to the paper feed (right) side.
Informs the copier/printer when the paper in
the right side (paper feed side) of the tray has
been used up. If there is a paper stack in the
left side (paper storage side), this is moved
into the right tray. If there is no paper stack in
the left side, paper end is indicated.
Detects the copy paper coming to the relay
roller and checks for misfeeds.
Detects when the paper is at the correct
paper feed height.
Detects when the tray is completely lowered,
to stop the LCT motor.
Detects the amount of paper remaining in the
right side of the tray.
Detects the amount of paper remaining in the
left side of the tray.
Detects when the rear fence is at H.P.
Detects whether the tray is correctly set.
Detects whether the side fence is opened on
closed.
Detects when the rear fence has moved the
paper stack from the left side to the right side.
Informs the copier/printer when there is no
paper in the left side (paper storage side) of
the tray.
Controls open-close movement of the side
fence.
Drives the paper feed roller.
Drives the relay roller.
Controls the LCT and communicates with the
copier/printer.
Detects whether the right cover is open.
9-4
Index No.
5
6
16
8
10
9
13
12
19
17
2
11
15
18
14
4
3
1
20
SM