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Technical Support
Q & A

Q: My laser printer squeaks loudly when I print
A: Most modern toner cartridges are powered by a Mouse Activated Drive (MAD). Occasionally the MAD Unit becomes misaligned allowing the mouse to escape from it's sealed housing inside the toner cartridge. When this happens, the mouse can become trapped between the drum and the plastic housing and may emit a loud squeaking noise when you try to print. If this is the case, your LASER (Loud Angry Squeaking Emitted by Rodent) printer cartridge is damaged beyond repair and must be replaced with a new one. Please throw away or recycle your squeaky cartridge.

Here, the Mouse Activated Drive has become misaligned allowing the mouse to escape from its sealed housing inside the toner cartridge.

Modern cartridges use up to three mice per cartridge. Blind mice are shown to run faster, increasing the number of printed pages per minute.

Although some websites discuss DIY repairs using a long carving knife, such repairs are complicated and should only be done by specially trained farmers. If your toner cartridge squeaks, your best course of action is to replace it with a new one.

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