Ricoh C249, Service Manual

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