Prima PH-42FB7, Service Manual, Page: 6 / 64

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Table 2 Cell Defect Specifications
Specification
Defect
Number of Cell Defects (N)
Distance between two defects
(D)
A-zone
► Total N ≤ 4 [cells/full screen]
► N ≤ 2 [cells/each R,G,B screen]
► N=0 [adjacency of 2-cells/full-white screen] Non-Ignition
Dot*
1)
+Unstable Dot*
2)
B-zone
► Total N ≤ 11 [cells/full screen]
► N ≤ 5 [cells/each R,G,B screen]
► N ≤ 5 [adjacency of 2-cells/full-white screen]
=0[adjacency of 3-cells/full-white screen]
A-zone ► N ≤ 1 [cells/each R,G,B screen]
Uncontrollable
Dot*
3)
B-zone ► Total N ≤ 3 [cells/ full screen]
A-zone ► N=0
Non-Extinguishing
Dot*
4)
B-zone ► N=0
► Total sum of all defects N ≤ 17 [cells/full-white screen]
► A-Zone: ≥ 100mm
► B-Zone: N ≤ 2
(100mm circle/screen: 2points
allowed)
► A, B Zone overlap: N ≤ 2
(100mm circle/screen: 2points
allowed)
Stain*
5)
► N ≤ 6, for the stain of which longer-axis length is 5mm or
shorter.
► N=0, for the stain of which longer-axis length is longer than
5mm.
► D ≥ 50mm
1) Non-Ignition Dot (Dark Defect) is defined as “A cell of which more than 50% area is not ignited”
2) Unstable Dot (Flickering) is defined as “A cell which repeats On and Off”
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”
4) Non-Extinguishing Dot (brightness defect) is defined as “A cell of which more than 50% area is
always ON”
5) Stain is defined as “A blob due to local color contamination in white or simple color pattern”
● The decision distance is 3H away from the panel, intensity of illumination is between 100 Lux and 200
Lux.
A -Zone
(25% of display area) V
H/4 H/2 H/4
V/2
V/4
V/4
H
B -Zone
(75% of display area)