OKI MC363

Jam occurs in the middle of paper running path.

Check item	Checking method	Action
Motor operation check
Paper feed motor, belt motor and ID motor	Confirm that the paper feed motor, belt motor and ID motor work normally by using the Motor & Clutch Test of the selfdiagnostic mode. Check if any load exists or not.	Replace the CU/ PU board or the feed motor or the belt motor or the ID motor or the ID unit or the belt unit.
Paper feed motor driver, belt motor driver	Pull out the CU/PU board HOP connector, and check the following at the side of the connector: Between 1pin – FG: Several MΩ Between 2pin – FG: Several MΩ Between 3pin – FG: Several MΩ Between 4pin – FG: Several MΩ Pull out the CU/PU board BELT connector, and check the following at the side of the connector: Between 1pin – FG: Several MΩ Between 2pin – FG: Several MΩ Between 3pin – FG: Several MΩ Between 4pin – FG: Several MΩ	Replace the CU/PU board

Jam occurs immediately after paper has reached the fuser.

Check item	Checking method	Action
Motor operation check
Fuser motor	Confirm that the fuser motor works normally by using the Motor & Clutch Test of the selfdiagnostic mode. Check if any load exists or not.	Replace the CU/PU board. Replace the fuser motor. Replace the fuser unit.
Temperature control of the roller rotation speed
Heat roller detected temperature	Check the detected temperature of the heat roller using the self-diagnostic mode. Is abnormally high temperature or abnormally temperature detected?	Replace the fuser unit and the CU/PU board.
Check the installation condition of fuser unit
Fuser unit	Check that the fuser unit is installed normally. (Is it pushed in down to the bottom-most point?)	Install the fuser unit correctly in a printer.