Kyocera TASKalfa 4012i

(12) Abnormal sound from inside the machine

Smudges / foreign objects adhesion or the toner condensation in the developer section

Step	Description	Assumed cause	Measures
1	Checking the developer unit	The shaft or the bushing of the developer roller is dirty or foreign objects are on them.	Check if the developer roller rotates. If not rotating smoothly, clean the shaft or the bushing of the developer roller.
2	Checking the developer unit	The torque inside the developer unit increased due to the toner condensation, etc.	Clean the developer unit. Then, replace it if the issue is not resolved.

(13) Abnormal sound from inside the machine

Frictional wear, smudges / foreign objects adhesion, or the waste toner clogging in the drum section

Step	Description	Assumed cause	Measures
1	Executing Drum refresh	Toner is not enough on the drum.	Execute the drum refresh to supply the toner to the cleaning unit.
2	Checking the drum unit and the developer unit	The drum does not rotate smoothly.	Check if the drum can rotate. If it does not rotate smoothly, replace it. If it locks up, replace the drum unit.
3	Cleaning and applying the grease	Foreign objects are on the tooth of the drum drive gear, or the grease is not enough.	Clean the tooth surface of the drum drive gear and apply the grease. (EM-50LP, Part number: 7BG010009H)
4	Replacing the drum unit	The torque inside the drum unit increased due to the waste toner clogging, etc.	Replace the drum unit.

(14) Abnormal sound from rear side of the main unit

Frictional wear, smudges / foreign objects adhesion, or the waste toner clogging in the drum section

Step	Description	Assumed cause	Measures
1	Reattaching the motor	The motor drive inside drive unit 1 is faulty.	Reattach the motors inside drive unit 1.
2	Reattaching drive unit 1	Drive unit 1 gears and surrounding gears do not engage properly	Reattach drive unit 1.