The DC controller determines that a laser/scanner has failed when any of the following conditions occurs:

●Laser failure: The detected laser intensity does not match a specified value when the product initializes.

●Beam-detect (BD) failure: The BD interval is outside a specified range during printing.

●Scanner-motor failure: The scanner motor does not reach a specified rotation speed within a certain time after it begins rotating.

20 Chapter 1 Theory of operation

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