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The Beocenter always closes the doors when going into standby (it would stand there looking untidy if it didn't).

You can hear the motor run for a few seconds because the belt has started to slip due to aging.

That's normal.

If the motor continues to run beyond the few seconds it normally takes to close the door, it must be diagnosed.

Martin

Hi Martin,

and thanks for the reply.

I understand it is normal to close an open door, but the door is already closed because I did not use CD at all in my radio listening session.

The motor runs approximately as long as it wold take to close the door.

Is this behavior also  normal?

Ingo

The Beocenter doesn't always know when the doors are opened or closed (there are no sensors), so it issues a close command to both
door motors when it goes into standby (and in some Beocenter versions also when mains is plugged in).

All normal.
Apart, perhaps, from the slipping belt, which will eventually fail to pull the door.  You will know when that happens and replace the belt.

Martin 

Thanks for clarification.

Ingo