Einleitung
If your USB's are not being read properly, it is possible that you may need a new USB reader for your Canon PIXMA MP620B. Replace it with our guide here!
This replacement is moderate in difficulty. It can be tricky to get inside the side panels of the printer.
Werkzeuge
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Locate the tabs on the top of the panel that hook down and into the black side panel.
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Insert the Spudger in-between the black panel and the blue panel as shown and pull the two pieces apart.
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There is a tab you will have to push down to remove the part.
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Once the tab is released, gently lift the cover away from the rest of the device to disengage the clips.
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After unclipping all the hooks, pull off the black side panel to reveal the inner circuit boards.
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Disconnect the large white ribbon cable that leads to the USB reader. As you are pulling out the USB reader, carefully detach the ribbon.
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To reassemble your device, follow these instructions in reverse order.