Post-Belt Sensor Unreached Paper Jam

Post-Belt Sensor does not turn on after the specified time has elapsed since the Registration Roller Clutch is turned on

Foreign objects or pieces of paper in the paper transport path
Incorrect installation of head rear paper guide Assy.
Post-Belt Sensor has a dirty surface, has fallen off, or is faulty
Belt Drawer is worn out, deformed, has fallen off, or has a dirty surface
The Post-Head Paper Guide Assy is worn out, deformed, has fallen off, or has a dirty surface
Belt Drive Motor failure
MCU board failure

Step	Confirmation and action	YES	NO
1	Check paper transport path Is there any foreign substances, paper chips, etc. in the paper transport path? Is there something wrong with the head rear paper guide Assy installed?	Remove foreign matter, paper fragments, etc.	Go to step 2
2	Check the operation of the Post-Belt Sensor Check the operation of the Post-Belt Sensor with the diagnostic function. Judgment: Does the signal change between when the paper is placed and when it is not?	Go to step 4	Go to step 3
3	Check the Post-Belt Sensor for installation, dirt, and connector connection Is the Post-Belt 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?	Clean the sensor surface, or fully insert the connector.	Replace the Sensor
4	Check the Belt Drawer for dirt and installation Is the Conveyor Belt clean and installed properly?	Go to step 5	Clean and reinstall the Belt Drawer.
5	Check the Post-Belt Guide for deformation and wear Is the guide deformed or worn out?	Replace the corresponding unit.	Go to step 6
6	Check the operation of the Belt Drive Motor Check the operation of the corresponding drive motor using the diagnostic function. Judgment: Is there any abnormal noise?	Replace the MCU board	Replace the gear train and Drive Motor

# Post-Belt Sensor Unreached Paper Jam