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故障现象镜头(图1)不能自动对焦,即自动对焦过程中发出连续“咝咝”声且对焦机构不能正常工作,但是手动对焦功能正常。故障分析与检修该镜头是客户邮寄过来维修的。经询问了解到,镜头的初始故障是装在相机上横拍正常竖拍不能自动对焦,其他功能正常。客户是个机械器材修理爱好者,喜欢自己动手,有一定的机械拆装经验,于是抱着试试看的态度来拆修。客户将镜头拆开后,没发现什么问题,就将镜头零部件回装回去,结果就形成
Symptom The lens (Figure 1) can not be autofocus, which means the autofocus emits continuous “咝 咝” sound and the focus mechanism does not work, but the manual focus function is normal. Failure analysis and maintenance of the lens is over the mail customer service. Upon inquiry, the lens of the initial failure is mounted on the camera vertical shoot vertical autofocus can not be automatic, the other functions are normal. Customer is a mechanical equipment repair enthusiasts, like yourself, have a certain degree of mechanical disassembly experience, so holding the attitude of trying to overhaul. Customers disassemble the lens, did not find any problems, it will be back to the lens parts back, the result is formed