Ricoh D017 Service Manual page 405

Service Call Conditions
798 B Finisher unit error
The machine cannot communicate
with the bridge unit but not the finisher.
798-1 B Upper limit switch error
The upper limit switch is pushed due to
tray lift error or some problems.
D017/D018/D019/D020/D084/D085
Poor connection between the
finisher and mainframe
Finisher harness damaged or
defective
Finisher unit defective
Upper limit switch pulled up
Defective upper limit switch
1. Check the harness.
2. Check for blockage around the
upper limit switch.
3. Replace the upper limit switch.
3-30 SM Appendix