can i clean the glass scanner part on my mg3620? it has fingerprints and dust.

Absolutely, you can clean the platen glass (the scanner glass). You just need to be gentle.

Here's how:

1. Make sure the printer is turned off and unplugged.
2. Lift the document cover.
3. Use a soft, dry cloth—like the kind for cleaning eyeglasses. Smooth out any wrinkles in the cloth first.
4. Wipe the glass surface gently to remove dust and fingerprints. Don't press hard.
5. Do not use any liquids, window cleaners, or abrasive cloths. You could damage the surface or leave streaks.

That should take care of it. The same method works for cleaning the exterior plastic of the machine if it gets dusty.