Affected Products:![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Single-Function: C4150, CS720, CS725, CS727, CS728
Multifunction: CX725, CX727, XC4143, XC4150, XC4153
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Issue Description:
A squeaking or creaking noise is heard during printing or after the last page is printed. This noise only transpires when printing and no noise occurs upon the printer's boot up.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Solution:
For any type of noise issue, try the following:
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Check where the noise originates from.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Power off the printer.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open the printer's toner door and check for any issues with the supplies, such as the toner cartridges, imaging unit, and the waste toner bottle.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
If the supplies noted above seem to be in good condition, check the paper path to make sure no paper remains inside.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Power the printer back on and print a test page to see whether the noise still remains.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Replace the Waste Toner Bottle (WTB) if the noise originates from the printer's right-hand side, below the imaging unit.
Note:Click the link to play a sample audio file of
waste toner bottle squeak
.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Occasionally a bind in the coupling can be the cause of the squeaking noise. Hence, rotate the WTB drive coupler 90 degrees from its position before installing. See images below:
Potential wear patterns that may be observed on the waste box
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Still Need Help?
Have the following available when calling Lexmark Technical Support;
Printer model(s)
Printer serial number
Toner/imaging unit/waste toner bottle part number and serial number
LEGACY ID: SO7814