canon cp660 / ir624

[JamesMartin]

I have an error message reading 'clean density sensor' & 'cycle power'. The machine goes through the motions of copying but doesn't actually copy what's on the copy board - thus a blank sheet of paper comes out. Can anyone help? i.e. where is the density sensor?

Cheers

[ladybird]

You will need to clean the transfer drum& clean the sensor, i believe the sensor is on the right hand door