Post-Head Paper Sensor paper feed delay error

Error code
  • 54 Post-Head Paper Sensor paper feed delay error
Occurrence condition
  • The Post-Head Sensor is already ON when sensor check begins.
Assumed cause
  • Foreign objects or pieces of paper in the paper transport path
  • Post-Head Sensor has a dirty surface, has fallen off, or is faulty
  • The Post-Head Guide Unit has fallen off.
  • MCU board failure
Related parts
  • Post-Head Paper Sensor
  • Post-Head Guide Unit
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 foreign matter, paper fragments, etc.

Go to step 2

2

Check the operation of the Post-Head Sensor

Check the operation of the Post-Head Sensor with the diagnostic function.

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

Go to step 3 Go to step 4
3

Check the Post-Head Guide Unit installation

Is the Post-Head Guide Unit clean and installed properly?

Go to step 4

Clean and reinstall the Post-Head Guide Unit.

4

Check the Post-Head Sensor for installation, dirt, and connector connection

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

Is the relay connector on the Rear Frame side not fully inserted?

Replace the Post-Head Guide Unit

Clean the sensor surface, or fully insert the connector.