sound system help

slm friends 2003 206 hdi 1.4 I have a diesel vehicle I have been having a tape problem since the day I bought the car, the tape brand of the vehicle is beeping 3secs after opening the blaupunkt brand tape, so the tape is interrupted and it sounds again, and it beeps again after the same sec, it may be related to the code and it is from the service. I asked for help, they looked at me, they said that it has nothing to do with the code, I did not take the car, I went with the license of the car and told me this, they told me, can you help me?

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Hi
When my friend connects the vehicle to a pp2000 device in a special service and introduces the tape to the vehicle, you will have no problem.