aiko NP-42H5, Service Manual

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7.2 42” HD Cell Defect Specifications
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1) Non-Ignition Dot (Dark Defect) is defined as “A cell of which more than 50% area is not ignited”
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2) Unstable Dot (Flickering) is defined as “A cell which repeats On and Off”
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3) Uncontrollable Dot is defined as “A cell which is distinctly brighter or darker than other cells around it” and/or
“A cell of which color is distinctly different from that of other cells around it”
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4) Non-Extinguishing Dot (brightness defect) is defined as “A cell of which more than 50% area is always ON”
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5) Stain is defined as “A blob due to local color contamination in white or simple color pattern”