Defect Terminology; Lcd Inspection Method; Dot Defect - Acer S230HL Service Manual

ACER S230HL
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- Defects not apparent within one minute shall be ignored.

1.4.5.5 Defect Terminology:

Dark Spots / Lines:
of contamination. Defects do not vary in size or intensity (contrast) when contrast voltage is varied.
Contrast variation can be achieved through the use of varying gray shade patterns.
Bright Spots / Lines:
size or intensity (contrast) when contrast voltage is varied. Contrast variation can be achieved
through the use of varying gray shade patterns.
Polarizer Scratch:
not vary in size. Physical damage to the polarizer does not damage the glass.
Polarizer Dent:
vary in size. Physical damage to the polarizer does not damage the glass.
Bright/Dark Dot:

1.4.5.6 LCD Inspection method:

*Ambient conditions:
*Viewing distance:
The distance between the LCM and the inspector eyes shall be at least 35~50cm

Dot Defect:

1. Product Specification
Spots or lines that appear dark in the display patterns and are usually the result
Spots or lines that appears light in the display patterns. Defects do not vary in
When the unit lights, lines appear light (white) with display patterns dark and do
When the unit lights, spots appear light (white) with display patterns dark and do not
A sub - pixel (R, G, B dot) stuck off / on (electrical).