论文部分内容阅读
[例1]故障现象 接通电源开关,电子寻像器显示正常,按下电动变焦控制W(广角)或T(摄远)按键,变焦环不转动。 分析与检修 遇到上述故障现象,可先用手拨动变焦杆看变焦环是否转动顺畅,检查结果正常,说明故障出在变焦驱动电机或控制电路中。为了迅速确定故障存在的部位,卸下机壳(卸下机壳必须先卸下带仓盖、话筒,为了电路安全起见最好把电池也退出),在处理印刷电路板(VEP23063B)上找到电动变焦电机驱动控制电路(该电路板固定在镜头组件左
[Example 1] Symptom When the power switch is turned on and the electronic viewfinder displays normally, the zoom ring does not rotate when the power zoom control W (wide angle) or T (telephoto) button is pressed. Analysis and maintenance encountered the above symptoms, you can first hand zoom lever to see if the zoom ring is smooth, the test results are normal, indicating the fault in the zoom drive motor or control circuit. In order to quickly identify the location of the malfunction, remove the housing (remove the housing must first remove the cassette cover, the microphone, the circuit is safe to remove the battery is also best), in dealing with the printed circuit board (VEP23063B) to find the electric Zoom motor drive control circuit (the circuit board is fixed to the left lens assembly