1. Printing equipment drive gear wear, loose or non-lubricated Print equipment drive wheel caused by long-term wear and tear, loose or not, resulting in gear and gear, drive wheel and drum between the discordant, abnormal sound.
The solution: tighten the gear or replacement, if not lubricated, please add some solid lubricant.

2. Drum components do not match the internal components caused by drum components during operation resistance is greater than the resistance of the print device drive, abnormal sound.
Judgment: Hand on the gear side of the printer cartridge, towards the protective cover to promote, check the resistance of the cartridge is normal, in addition to the Samsung series of drum components, in general can be very easy to promote.

3. Incorrect assembly of the drum assembly will let the hp cf230a toner can not operate normally. The assembly of the drum assembly is incorrect, so that the drum assembly can not operate normally or the resistance during operation exceeds the driving resistance of the printing apparatus, causing abnormal noise.
Judgment: Hand on the gear side of the cartridge, towards the protective cover to promote, check the resistance of the cartridge is normal, in addition to the Samsung series of drum components, in general can be very easy to promote.

4. Drum assembly spring compression spring or tension spring is not installed properly, off or aging caused by drum components and then run the process, the powder bunker and the waste toner warehouse between the drag or tension is too small, bad drum gear components, abnormal sound
Judge the method to check whether the elastic compression spring or tension spring at the joint between the drum unit and the waste toner bin is correctly installed and gently squeeze the powder bin and the waste toner box to see if the spring is aged or not; OK spring.

5. Drum components caused by gear defects in the operation of the various components of the uncoordinated operation, abnormal sound
Judgment: Push the OPC gear in the direction of the protective cover toward the cartridge to see if there is any uncoordinated phenomenon. Solution: Replace the defective gear or the defective gear.

6. Drum on the machine is not correct
Mainly due to not installed in place or the type of print cartridge does not match the print device drive wheel and the drum component of the drive wheel can not be a good contact, abnormal sound;
Judgment and treatment: Reinstall the cartridge to see if it is installed.