Paper Tray Post-Pickup Sensor paper feed delay error

Error code
  • 50 Paper Tray Post-Pickup Sensor paper feed delay error
Occurrence condition
  • The Paper Tray Post-Pickup Sensor is already ON when sensor check begins.
Assumed cause
  • Foreign objects or pieces of paper in the paper transport path
  • The Paper Tray Post-Pickup Sensor has a dirty surface, has fallen off, or is faulty
  • The Registration Roller Clutch has fallen off or is faulty
  • The Feed 1 Roller and Feed 2 Roller have a dirty surface, have fallen off, or are faulty
  • The Feed 1 Clutch and Feed 2 Clutch have fallen off or are faulty
  • Mechanical control board failure
Related parts
  • Paper Tray Post-Pickup Sensor
  • Pre-Registration Paper Sensor
  • Registration Roller Clutch
  • Regist Unit (RESIST, UPPER, ASSY)
  • D1 Cover (Feed 1 Roller, Feed 1 Clutch)
  • Feed 2 Unit (PAPER GUIDE, FEED, LOWER, ASSY) (Feed 2 Roller, Feed 2 Clutch)
Troubleshooting
Step Confirmation and action YES NO
1

Check paper transport path

Is there any foreign matter, paper chips, etc. in the paper transport path?

 Remove any foreign objects or pieces of paper

Go to step 2
2

Check the operation of the Paper Tray Post-Pickup Sensor

Check the operation of the Paper Tray Post-Pickup Sensor with the diagnostic function.

Does the signal change between when the paper is placed and when it is not?

 Go to step 5 Go to step 3
3

Check the Feed 1 Roller and Feed 2 Roller for dirt and installation

Are the rollers listed in the “Assumed cause” section clean and installed properly?


 Go to step 4

Clean and reinstall the paper feed rollers.
4

Check the Feed 1 Roller and Feed 2 Roller for deformation and wear

Are the rollers listed in the “Assumed cause” section deformed or worn?

 Replace the worn out or deformed roller

Go to step 5
5

Check the Paper Tray Post-Pickup Sensor for installation, dirt, and connector connection

Is the Paper Tray Post-Pickup Sensor installed improperly? Is there dirt on the sensor? Is the connector not fully inserted?

Clean the sensor surface, reinstall the sensor, or fully insert the connector.

 Replace the sensor
6

Check the Registration Roller Clutch

Check the clutch operation with the diagnostic function.

Does it make an operating sound (clutch connection sound)?

 Go to step 7 Go to step 8
7

Check the Feed 1 Clutch and Feed 2 Clutch

Check the clutch operation with the diagnostic function.

Does it make an operating sound (clutch connection sound)?

 Go to step 9 Go to step 8
8

Check the malfunctioning clutch for connection

Are the connectors connecting the clutch fully inserted?

 Connect them firmly.

Replace sequentially

  • Pre-Registration Paper Sensor
  • Clutch
  • Registration Unit
  • Mechanical control board
9

Check the operation of the Main Unit Motor

Check the operation of the corresponding Main Unit Motor with the diagnostic function.

Is there any abnormal noise?

 Replace the gear trains or the Main Unit Motor. Replace the mechanical control board