Switch on the power switch, in indoor photography basic normal, shooting outside the glare of the object, the electronic viewfinder image on the screen.bUAservice manual download site
The illuminance is higher, the image is white, a white light appeared serious, cut off the power is switched on again sometimes to return to normal, but the machine often malfunction aperture control failure.bUAservice manual download site
The above phenomenon is estimated to be automatic aperture control and drive circuit caused by poor maintenance manual, check whether the state can work normally, the camera operation panel on the state of the switch is in the "MANuAL 'position, the aperture / shutter speed adjusting switch to" SHUTTER "position, press the" SHUTTER "- / + button, observed the shutter speed of l/8000 sec electronic viewfinder image picture is not white device (actually the shutter speed increased, CCD charge accumulation time's sake), the high speed shutter speed to normal position 1/50 seconds, the [IRIS/SHUTTER] selector switch is set to" IRIS "position, repeatedly press the" IRIS CLOSE "or" IRIS OPEN "button, the electronic viewfinder image still white, cut off the power switch, observe that cut off the internal power switch instant camera sent no aperture closes" Kacha "sound, the multimeter black pen grounding, the red pen monitoring aperture drive transistor Q701 emitter voltage is 1.8V, cover the lens with the lens, the meter is indicated by the 1.8V to the 4.8V, the aperture detection control circuit works normally, the fault in the internal or connector aperture components According to the machine, and sometimes connect the power supply to work properly, but the machine often aperture control failure phenomenon, check the connector FP701 good contact, thus determine the fault in the diaphragm assembly from the lens aperture, unloading components and open the inside, and dial the aperture ring plate driving mechanism with forceps, found the ring does not Chang, further examination showed that the ring has been deformed, replacing the diaphragm assembly (Part No. vEM2305) after loading to the lens, switch on the power and shooting, machine work back to normal.

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