SDL Folding Paper Transport Jam (Feed delay)

Error code
  • 121 SDL Paper Transport Jam (Feed delay)
Occurrence condition
  • SDL Paper Transport Sensor does not turn on even after the specified time has passed since the SDL Vertical Paper Feed Sensor turned on.
Assumed cause
  • Rollers, guides, etc. are dirty, deformed, or not installed properly
  • Damaged or malfunctioning SDL Transport sensor
  • Dirty, missing, or defective SDL Paper Transport Motor
  • Failure of the SDL Unit Main Board
  • Floor Finisher main board failure
Related parts
  • SDL Paper Transport Sensor
  • SDL Paper Transport Motor
  • SDL Unit Main Board
  • Floor Finisher Main Board
Troubleshooting

Step

Confirmation and action

YES

NO

1

Check the Paper transport parts

Is the  Paper transport parts installed properly?

Are the paper transport parts dirty or deformed?

Reinstall the paper transport assembly

Replace if not repaired

Go to step 2

2

SDL Transport SensorCheck the connection of the connector

Is the SDL Transport sensor properly connected?

Go to step 3 reconnect SDL Transport sensor
3

SDL Transport SensorOperation Check

Is the SDL Transport sensor operating normally in the diagnostics menu?

Go to step 4 replace SDL Transport sensor
4

SDL Paper Transport MotorCheck the connection of the connector

Are the SDL Paper Transport Motor connected properly?

Go to step 5 reconnect SDL Paper Transport Motor
5

SDL Paper Transport MotorOperation Check

Is the SDL Paper Transport Motor operating normally in the diagnostics menu?

Go to step 6 Replace SDL Paper Transport Motor
6

Replace SDL Unit Main Board

Have you reconnected and repaired the connector on the SDL unit main board?

Go to step 7 Replace the SDL Unit Main Board
7

Replacing floor finisher main board

Have you reconnected and repaired the connector on the floor finisher main board?

End Replace floor finisher main board