Ricoh A250 Service Manual page 356

ELECTRICAL COMPONENT DESCRIPTION
1.4 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name
Motors
M1 Paper Feed
M2 Lift
Sensors
Lift
S1
Paper End
S2
S3 Paper Height 1
S4 Paper Height 2
Switches
SW1 Tray Cover
SW2 Paper Size
PCBs
Tray Main
PCB1
Others
Optional Tray
H1
Heater
A250
Drives the paper feed roller.
Lifts the tray bottom plate.
Detects when the paper in the tray is at the
correct feed height.
Informs the copier when the tray runs out of
paper.
Detects the amount of paper in the tray.
Detects the amount of paper in the tray.
Detects whether the tray cover is opened.
Determines what paper size is in the tray.
Controls the paper tray unit and communicates
with the copier.
Removes humidity from the paper in the tray.
10-4
Function Index No.
6
3
2
8
5
4
7
9
1
10
SM