You wont find a chassis number, they stopped using them.
Its a mystery why its a J model, maybe they started using
them at the end of the J line, I dont remember. There were
also sets released regionally first, digital system 3 & Bose
sets IIRC. The CC 2 marking may be just before they came
up with the system 3 name. Also had limited availability sets,
I tried to get the first HDTV for one of the Boston TV
stations. A $10,000 projo, just couldnt get one even for
them. But there may be more to that.............
I will look up a K line later & see what the parts are that
smoked up.
73 Zeno