canon mf742cdw control condensation

[anas.agha]

hello
I have mf742 very dusty, and printing very lighter with new cartridges. I decided to clean with a b WhatsApp Image 2024-08-17 at 14.30.46_65826a18.jpg lower and clean the laser unit also.
after that when powered on and went home , I hear laser motor sound working very fast and error apear control condensation as in the image.
any one can help, maybe one sensor needs cleaning ( sensor un-10 ) maybe but I don't know where is it, and I don't have the service manual for this model.

[Brian8506]

I’m not familiar with that model but you should never use canned air inside the copier. All you do is move dust around and now it may be all over the mirrors inside the laser. Best thing would be to remove it and clean it or replace it.

[anas.agha]

i already clean mirrors.

i found solution , clean un 10 sensor near paper drawer at the left
regards