Focus groups to determine the initial problem, then open the machine, pay particular attention to the first after opening the main capacitor discharge. All components of the lens clean and found not a lot of debris. Then slide the focus group conducted a pencil lubrication, plus DC 2.5V using focus groups to test, focus group normally installed. Lens error still prompt installed, re-disassemble, discharge, open the lens group, take down the CCD, the group re-diagonal plus 2.5V tributaries tested properly. Right right corner mounted on the CCD group plus 2.5V tributaries tested telescopic lens blocked. Failure to find. CCD assembly manual focus group inside a plastic gear deformation, resulting in the entire focus motor blocked. The bad gear replaced, installed new up, the machine properly.bjiservice manual download site