Today, looking at a 100-400 shot of japanese energy coming back for repair, the owner brought it home, and it's running, and it's not working. The lens stretches to focus on carden, pulls it out, doesn't focus, shakes to hear the sound inside the lens. In japan, two maintenance shop tests were found that couldn't be repaired, and the japanese repairer could not fix the japanese camera, drawing videos to see if we could save our lives if we passed the sea。
Let's take a look at the problem. Take the lens card, then remove the back tube, remove the back tube from the line, then remove the middle aluminium cylinder。
• then he started to tear down the front, take down the front circle, as if there was a problem. The screws of the main mirror have not been removed. The glue inside this screw is more difficult to break. The japanese master is probably stuck at this point。
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The three screws and slides of the focus lens were dropped, so it certainly cannot be used properly. One of the screws fell into the inner lens and swayed in it, and one of them was stuck behind the main plate, and found the screws and put them back in place。
• the front lens is a little rusty and clean-up, and it's back on its original path, it's normal before it's used, it's bad after it's transported, and it's gonna be all three screws, it's gonna be all right。
• a camera set-up test, which is normal for focus and spreads smoothly. These screws are hard to get rid of the japanese repairer, and then go outside and do it again。
