Ricoh JP3000, Service Manual, Page: 59 / 693

ELECTRICAL COMPONENT LAYOUT
1-15
SM C231/C237/C238
O
v
erall
Inf
o
rmat
ion
Solenoids
Index No. Name Function
43 Rear Pressure Release
Solenoid Releases the press roller to apply printing
pressure.
20 Front Pressure Release
Solenoid Releases the press roller to apply printing
pressure.
Switches
Index No. Name Function
49 Scanner Unit Safety
Switch Checks whether the scanner unit is properly set.
9 Master Making Unit
Cover Safety Switch Checks whether the cover on the master making
unit is properly closed.
16 Table Lowering Switch Lowers the paper table.
21 Test Switch Releases the cover safety functions. (See the
notes below this table.)
23 Door Safety Switch Checks whether the front door is properly
closed.
24 Main Switch Turns the power on or off.
NOTE: When you use this test switch, be sure to return it to the default position
after servicing.
Sensors
Index No. Name Function
50 Master Eject Position
Sensor Detects when the drum is at the master eject
position.
51 Paper Exit Timing
Sensor Determines the paper exit misfeed check timing.
48 Feed Start Timing
Sensor Determines the paper feed start timing.
26 Master Eject Sensor Detects used master misfeeds.
28 Pressure Plate Limit
Sensor Detects if the pressure plate is in the lowest
position.
27 Pressure Plate Home
Position Sensor Detects if the pressure plate is at the home
position.
29 Drum Master Sensor Detects if there is a master on the drum.
32 Eject Box Set Sensor Checks if the master eject box is set.
33 Paper Exit Sensor Detects paper misfeeds at the exit.
37 2nd Feed Timing
Sensor Determines the paper misfeed check timing at
the paper registration area.
38 Clamper Open Sensor Detects if the clamper is in the open position.
41 Clamper Close Sensor Detects if the clamper is in the closed position.
45 Table Lower Limit
Sensor Detects when the paper table is at its lower limit
position.