Have irregular s-shaped interference and picture. CDMservice manual download site
 CDMservice manual download site
Analysis using the length is more than 90 minutes of video, because of long working hours, could make the belt loose, the friction force is not enough; Accompanied by "raise price..." The phenomenon of mechanical noise. These are related to the load increasing. And picture have irregular s-shaped moire interference, estimated load increase is due to the drum rotational resistance, cause the drum track irregularities in the rotation. Focusing on drum, with a single twist of the hand, have obvious resistance. Remove the three screws on drums, drum shaft grease have been found to dry up. With anhydrous alcohol first remove dry oil, add right amount let stand for 1 hour after the new grease, the grease into the shaft. With rosin alcohol solution soak belts, installed after dry, loaded with commissioning, everything is ok.CDMservice manual download site