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Fail to read barcodes

2015-10-20
A. Some barcode types don’t set to be read as factory default. Please check whether you enable this function.
B. The barcode is not correct. Please generate a new barcode.
C. There’s direct sunlight on the barcode and the photoreceptor becomes saturate. Please avoid direct sunlight.
D. There’s transparent material covered on the barcode. The high reflectance will influence the decoding performance.
E. Hardware failure: defective engine board.
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