Took my Pioneer CT=1040W apart. Main belts for both dual tape decks were melted onto the pulleys. There is also another belt on the B tape deck. Appears to be intact, but can't see where it goes.

The repair of a dual cassette deck is usually not worth it if you are paying a Technician but since you are doing it yourself, there are screws that must come out of the deck to take the transport out. Some of them require you to take the plastic door off. They are not a treat to work on and often even when you are done they have poor performance anyway. Where the belt goes is indicated on the pictorial diagrams of the service manual. Otherwise it is common sense and a little bit of physics. I have probably done 400 by now. Maybe some TV shops will work on it but they are really not real Technicians for tape decks and most times hacks.