Introduction
Go to step 1 ↓In order to replace or repair the motors, gears, etc., the back plate has to be removed. Ensure the batteries are not in the device before starting this guide.
What you need
Tools
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Remove the cartridge and the yellow tape cutter.
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Unscrew the two 9 mm Phillips #1 screws from the top and bottom.
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First: To separate the top cover from the body, insert a spudger between the two halves.
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Gently twist the spudger until the two halves separate. Do this in multiple spots around the perimeter of the cover to distribute the pressure.
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A small flat screwdriver works for this step. Use on the left and right sides.
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To reassemble your device, follow these instructions in reverse order.