hi there.i've just put new belts on my 4002.the thing is once i have pushed start all that happens is the carriage travels all across the record without the pickup arm lowering, coming to rest in the correct position. i've set it up according to the service manual. reading through the forums i came across what seems to be an identical fault .the answer when it came apparently was in in french which i could'nt understand having only school boy french.can somebody help me please.