Adım 21 çevriliyor
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This step is the actual repair procedure for the shutter error.
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The error is caused by a weakened shutter return spring. Due to extensive use it doesn't have the power to close the shutter.
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Normally the motor opens the shutter curtain and engages the mechanism with a small neodymium magnet.
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When the electromagnet is activated, the neodymium magnet is disabled and the shutter curtain has to travel towards closing direction with the help of the return spring.
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However, when the return spring is not strong anymore, it cannot move the curtain.
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For repair, using a pair of tweezers, turn the spring adjustment wheel (the black round wheel with teeth, bottom one shown with red arrow) for 2-3 clicks towards the direction of green arrow. Compare the first and the last photo for the amount of rotation, it is only a tiny bit!
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This should do it.
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