Ricoh Pro 8300S - Sc504-35; Vacuum Feed LCIT 1 Tray 1 Return Fan Error

1.SC Codes
106
Pattern
B
Error Condition
When tray set is detected, the paper feed belt is not set.
Major Cause
 Power of downstream unit is not turned on.
 Paper feed belt unit is not set, or not set properly.
 Connector of the paper feed belt unit is defective or not connected properly.
 Harnesses are damaged.
 PCB is defective.
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Check the paper feed belt unit.
Set the unit correctly, and turn the main power OFF and then ON.
2. Check the connectors of the harnesses of the belt unit.
Reconnect the connectors. Turn the main power OFF and then ON.
3. Check the harnesses.
If the harnesses are defective, replace the harnesses. Turn the main power OFF and then ON.
4. Replace the main PCB.
SC504-35
Error Name
Vacuum Feed LCIT 1 Tray 1 Return Fan Error
Pattern
B
Error Condition
An abnormal signal is detected when the return fan rotates.
Major Cause
 Power of downstream unit is not turned on.
 Return fan is defective or not connected properly.
 Harnesses are damaged.
 PCB is defective.