Ricoh FT5535 Service Manual page 270

2.3 ELECTRICAL COMPONENT DESCRIPTION
Refer to the electrical component layout on the reverse side of the Point to Point
Diagram (on waterproof paper).
Symbol Index No.
Motors
M1 4 Main
Circuit board
PCB1 1 Interface board
Sensors
S1 2 Tray set 1
S2 3 Tray set 2
S3 10 Relay 1
S4 11 Relay 2
S5 5 Paper end 1
S6 6 Paper end 2
Switches
SW1 12 Tray cover
Clutches
CL1 7 Paper feed 1
CL2 8 Paper feed 2
CL3 9 Relay
Heaters
H1 13 Tray (Option)
H2 14 Tray (Option)
FSM
Description
Drives all the paper tray components
Controls the paper feed tray unit in response to
signals from the copier
Detects whether the paper tray is in place
Detects when the leading edge of the paper leaves
the paper tray, to determine copier relay clutch
timing and jam detection timing
Detects when the paper tray runs out of paper
Detects whether the tray unit cover is open, and
cuts the 24 Vdc line if it is.
Starts to feed paper from the tray
Drives the rollers in the paper trays
Turns on when the main switch is off, to keep the
paper in the trays dry
9-3
Note
FT5535/4527/4522