Ricoh B264 - Page 588

ELECTRICAL COMPONENT DESCRIPTION
B542 4 SM
1.4 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function Index No.
Motors
M1 Tray Drives all rollers. 4
M2
Tray Lift Lifts the upper and lower tray bottom plates
(there are two motors in this unit, one for each
tray.
15
Sensors
S1
Upper Lift Detects when the paper in the upper tray is at
the correct feed height.
5
S2
Lower Lift Detects when the paper in the lower tray is at
the correct feed height.
11
S3
Upper Paper
End
Informs the copier when the upper tray runs
out of paper.
15
S4
Lower Paper
End
Informs the copier when the lower tray runs
out of paper.
12
S5 Upper Relay Detects misfeeds. 14
S6 Lower Relay Detects misfeeds. 13
S7
Upper Paper
Height 1
Detects the amount of paper in the upper tray.
17
S8
Upper Paper
Height 2
Detects the amount of paper in the upper tray.
16
S9
Lower Paper
Height 1
Detects the amount of paper in the lower tray.
19
S10
Lower Paper
Height 2
Detects the amount of paper in the lower tray.
18
Switches
SW1
Upper Tray Informs the copier when the upper tray is set
in the machine.
2
SW2
Lower Tray Informs the copier when the lower tray is set
in the machine.
3
SW3
Vertical Guide Detects whether the vertical guide is opened
or not.
10
Magnetic Clutches
MC1
Upper Paper
Feed
Starts paper feed from the upper tray.
7
MC2
Lower Paper
Feed
Starts paper feed from the lower tray.
9
MC3 Relay Drives the transport rollers. 6
PCBs
PCB1
Main Controls the paper tray unit and
communicates with copier.
1