Ricoh Pro 8300S - Sc506-25; Vacuum Feed LCIT 2 Tray 1 Bottom Plate Lift Error

1.SC Codes
129
 Lower limit sensor is defective or not connected properly.
 Harnesses are damaged.
 PCB is defective.
 Upper limit sensor 2 is defective or not connected properly.
When Vacuum Feed Banner Sheet Tray is Installed
 Power of downstream unit is not turned on.
 Tray is overloaded.
 PCB is defective.
 Upper limit sensor 2 is defective or not connected properly.
 Paper height middle sensor is defective or not connected properly.
 Harnesses are damaged.
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Check if the tray is overloaded.
If so, set the paper correctly.
2. Check the connectors of the harnesses related to load detection (lower limit sensor / paper height
middle sensor / upper limit sensor 2)
Reconnect the connectors. Turn the main power OFF and then ON.
3. Check the electrical components related to load detection (lower limit sensor / paper height middle
sensor / upper limit sensor 2)
If they are defective, replace them. Turn the main power OFF and then ON.
4. Check the harnesses (lift motor/Lower limit sensor / paper height middle sensor / upper limit sensor
2)
If the harnesses are defective, replace the harnesses. Turn the main power OFF and then ON.
5. Replace the main PCB. Turn the main power OFF and then ON.
SC506-25
Error Name
Vacuum Feed LCIT 2 Tray 1 Bottom Plate Lift Error
Pattern
B
Error Condition
Upper limit sensor detected that the bottom plate was lifted too much when paper is set.
Major Cause
 Power of downstream unit is not turned on.