Ricoh C249 Service Manual page 151

Switches
No. Component
19 Table Lowering Switch
24 Door Safety Switch
27 Main Switch
13 Master Making Unit Set Switch
37 Eject Box Set Switch
62 Lower master tray set switch
Sensors
No. Component
Master Eject Position (Drum
53
HP) Sensor
54 Paper Exit Timing Sensor
52 Feed Start Timing Sensor
30 Master Eject Sensor
Pressure Plate Limit Sensor
32
Pressure Plate HP Sensor
31
34 Drum Master Sensor
38 Paper Exit Sensor
2nd Feed Timing Sensor
55
44 Clamper Open Sensor
45 Clamper Closed Sensor
Table Lower Sensor
49
Platen Cover Sensor
2
Scanner HP Sensor
1
9 Master Set Cover Sensor
Master End Sensor
10
Paper Height Sensor
14
18 Registration Sensor
17 Paper End Sensor
6 Cutter HP Sensor
16 Paper Length Sensor
56 2nd drum master sensor
Printing pressure HP sensor
58
Duct plate HP sensor
60
62 Duct jam sensor
Thermal head HP sensor
65
68 Master edge sensor
70 Ink idling roller HP sensor
SM
Function
Lowers the paper table.
Checks whether the front door is properly closed.
Turns the power on or off.
Checks if the master making unit is installed.
Checks if the master eject box is installed.
Checks if the lower master tray is installed.
Function
Detects when the drum is at the master eject
position.
Determines the paper exit misfeed check timing.
Determines the paper feed start timing.
Detects used master misfeeds.
Detects when the pressure plate is in the lowest
position.
Detects when the pressure plate is at the home
position.
Detects if there is a master on the drum.
Detects paper misfeeds at the exit.
Determines the paper misfeed check timing at the
paper registration area.
Detects if the clamper is in the open position.
Detects if the clamper is in the closed position.
Detects when the paper table is at its lower limit
position.
Detects whether the platen cover is open or
closed.
Detects when the image sensor is at home
position.
Checks if the master set cover is properly set.
Detects when the master making unit runs out of
master roll.
Detects when the paper table reaches the paper
feed position.
Detects paper approaching the registration roller.
Detects when the paper table runs out of paper.
Detects when the cutter is at the home position.
Detects when long paper is on the paper table.
Detects if there is a master on the drum.
Detects when the printing pressure is at the home
position.
Detects when the duct plate is at the home
position.
Detects when a master remains in the duct.
Detects when the thermal head is at the home
position.
Detects the leading edge of the master.
Detects when the idling roller is at home position.
6-5
MECHANISM OVERVIEW
C249