How to change I/O
1. Loosen the screws of the controller to open it.
2. Can see the I/O board which is located next to stepping driver.
3. Loosen the screw which is support I/O board and then pick it up .
4. After replacement, you must put I/O board to base board fit properly
5. The way to change the CPU board as same as above. CPU board is located next to the I/O board..
6.
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