Help with Panasonic SV-DA10

The problem is that the cartridge pulls in but does not pull the tape around the head. There must be a switch or a sensor somewhere that signals that the cartridge is present. Can someone guide me on what to check!
Thanks!
Meelis
 
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Thanks for the information!
Mode and Load switches worked.
But in the process of checking them, I applied pressure to the inserted cartridge and the machine started working.
I cleaned the cassette switches and the machine still works.
Thanks!
 
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Reactions: Boydk