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Hameg 8030-4 funktion generator no correct signal

Hello, can anyone help me?

I bought a hameg mainframe 8001 and 8030-4 Funktion generator. Funktion generator 8030-4 does not give the correct signal on the oscilloscope, but allows regulation on the device itself (when it is connected to the power supply on the right side), and when I switch it to the left side, the first two appear on the display (from left to right side) zeros blink, the other two digits count down from 06 to zero 00 and then the numbers disappear from the screen and only the Hz symbol remains lit. 

Please help
Regards
Krot