Help Initial Setup JVC DVR/VCR combo

I've recently purchased a JVC DR-MV5S and although I can play DVDs, when I switch to VHS, either nothing appears on my TV or I get a picture, the sound of a TV station and the picture bounces up and down. I've tried cleaning the heads (the machine is new), with no success. Sometimes, when I can't see any picture at all, the message "U01" appears on the player. The manual is no help! Does anyone have any ideas??