Tascam MD-801R tries to read TOC and displays "Servo Error"

Hello everyone..I'm in need of a Tascam minidisc MD-801R service manual..Can anybody help please?..The unit tries to read TOC information and then says "Servo Error"
The laser moves to the centre, illuminates but the spindle motor doesn't spin!..Unlike Sony, Tascam don't seem to make their manuals readily available and I feel that without a manual, I'm not going to get too far since I can't enter into diagnostic mode without knowing what sequence of buttons to press as with Sony units.
Many thanks ~ Rick in Oz