Just wondering if any one knows what the WFDT option is / was suppose to be? Looking at the block diagram, There is a line coming off the WFM IC (IC9) labeled WFDT running out the back of the 1000 that should go to J12 labeled WFDT (option). Partial service manual here: http://w1.316.telia.com/~u31626584/dl/index.htm Includes: Alignment procedure Board layouts Block diagram Schematics Bill