Akai PDP42Z5TA Service Manual page 125

Cell Defect Specifications
Defect
A-zone
Non-Ignition
☞1)
Dot
☞2)
+ Unstable Dot
B-zone
A-zone
Uncontrollable
☞3)
Dot
B-zone
A-zone
Non-Extinguishing
☞4)
Dot
B-zone
▶ Total sum of all defects N ≤ 17 [cells / full-white screen]
▶ N ≤ 6 , for the stain of which longer-axis length is
☞5)
Stain
▶ N ＝0 , for the stain of which longer-axis length is
☞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.
Product Specification of 42XGA PDP Module
Number of Cell Defects (N)
▶Total N ≤ 4[cells / full screen]
▶ N ≤ 2 [cells / each R,G,B screen]
▶ N ＝ 0 [adjacency of 2-cells / full-white screen]
▶ Total N ≤ 11 [cells / full screen]
▶ N ≤ 5 [cells / each R,G,B screen]
▶ N ≤ 2 [adjacency of 2-cells / full-white screen]
＝ 0 [adjacency of 3-cells / full-white screen]
▶ N ≤ 1 [cells / cells/each R,G,B screen]
▶ Total N ≤ 3 [cells / full screen]
▶ N ＝ 0
▶ N ＝ 0
5mm or shorter.
longer than 5mm.
H
A-zone
(25% of display area)
B-zone
(75% of display area)
H/4 H/2
123／148
Specification
▶A-Zone : ≥ 100mm
▶B-Zone : N≤2
( 100mm
Circle/screen:2points
▶A, B Zone overlap:N≤2
( 100mm
Circle/screen:2points
▶ D ≥ 50 mm
H/4
Distance between two
defects (D)
allowed)
allowed)