Having recently aquired a Beosound 2000, I have a question about the door motor. The unit has been cleaned and the door/clamper motor belt replaced. It functions well, but I have a question. When the glass comes to the fully closed position the motor continues to try to run for approx. 3 seconds and then stops. This does not happen at any other stop position; fully open, clamper up, or clamper down.
I am aware of a service bulletin suggesting replacement of the cam lifting wheel and changing resistor R2 from 100K to 180K on PCB9, the gear sensor PCB. The resistor has been changed to no effect. Although the cam has not been replaced, it is very clean. I'm trying to discern the difference between the original cam wheel and the "improved" part. The bulletin states "The black field on the Cam-lifting wheel has been lowered and the focus distance from the optocoupler on the PCB9 has been improved by changing R2 to 180K ohms."
Perhaps one of the fine owners of a 2000 could remove the left grille and have a look at their motor? Does it stop immediately as the door comes to the fully closed position? Or rather, does it continue to try to turn for a bit and then stop?
I did in fact have a similar problem on a 2500 but the issue there was a dirty switch that senses when the doors are completely closed. I see no such switch in the 2000. Am I missing something?