NEC N—831 VCR common breakdown maintenance circuit diagram

Published:2011/6/24 3:50:00 Author:Ecco | Keyword: NEC , VCR, common breakdown , maintenance | From:SeekIC

When the power switch is turned on, the electronic viewfinder image is normal, pressing the power zoom key T (Telephoto), when the scene is near the target, the inside viewfinder image is blurred. Analysis and Maintenance: When shooting, pressing the T key and when the scene is near the target and the viewfinder image is blurred, it should be noticed that the focus ring does not rotate, then you should check the camera focus selecting switch on the control panel (FOCUS) has been pulled to AUTO position; rotateing the focus ring to observe the clarity of the viewfinder image is back to normal level or not,then you can determine the failure's existence being in auto-focus detection control and motor drive circuit.



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