Why do I here a low whistle sound when printing?
Print jobs are fine. But low, loud whistle is heard when printing.
Monochrome laser printer introduced in 2012. The printer has a 35 PPM page rating and the first page comes out in 8 seconds. Depending on which model you own, you will have different expansion options and available features (Ex: M401n is limited to 128MB of RAM, despite having space for a memory module and a access panel). Uses HP 80A/80X toner cartridges.
The printer may be set up to use Quiet Print Mode. The engine speed gets reduced in this mode and it can make the printer whistle like this. If you know it's own or aren't sure, turning it off may get rid of it if it annoys you that much.
To do this on the 2 line LCD printer:
If the noise remains, the motors are causing it. I would do your best to ignore it but if it bothers you they can be replaced but it's a difficult repair.
Most likely - It could be loud sound of toner cartridge, another version for that - fuser film needs to be oiled or replace due to insufficient amount of oil under it and worn out. Next thing I would check - is feed roller.
But I'm assuming - it's cartridge. If you have another one - try to put it in and check how it sounds to your ears.
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