This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
Text excerpt from page 22 (click to view)
(5) Apply Froil G-311S to the pivot of the PF cam and the cam of the PF cam gear.
(6) The cam faces inside. Insert the PF cam gear in the pivot of the PF cam. Note: 1) When inserting the gear, turn the cylinder cam assembly beforehand so that the claws of the paper feed gear are horizontal. At this time, the squared notch of the cylinder cam assembly should face the back. 2) Four-sectored protruding parts of the PF cam gear should face the outside. Engage the center of the protruding part that is horizontal when the inside cam faces down with the paper feed gear.
(7) Apply Froil G-311S to the two cotter pin springs and then insert them in cotter pins. (8) Put the two cotter pins in the PF cam gear.