JVC pd-42dxt, Руководство по обслуживанию

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PD-42DXT
(No.52108)1-7
2.2 TECHNICAL INFORMATION
2.2.1 PDP STRUCTURE AND CHARACTERISTIC
This unit (Display Unit) uses the flat type panel PDP (Plasma Display Panel), instead of the conventional CRT (Cathode Ray Tube),
as a display unit.
2.2.2 PIXEL (CELL) ARRAY
PDP is constructed by sealing the xenon, which emits neon and ultraviolet rays for discharging purpose, in between the electrodes
lay on the front glass substrate and rear glass substrate.
One pixel is composed of 3 RGB cells, with cell pitch of 0.299mm (1 pixel 0.897mm) horizontally and 0.675mm vertically.
The cell is arrayed in each RGB color as shown in Fig. 1. One pixel is formed by interlacing each RGB color cell.
One cell size is 0.299mm horizontally and 0.675mm vertically.
Fig.1 Alignment of pixel (cell)
2.2.3 PIXEL DEFECTS
Though PDP is made by means of ultra precise technology, there are cases whereby not all pixels (cell) will function properly. Pixel
defects, pixels that are always not lit, and on the contrary pixels that are always lit, exist depending on each case.
There are 2 types of Pixel defects, [Bright Dot Defects] and [Dark Dot Defects], as defined respectively in the following:
(1)Bright Dot Defects
Bright dot defects are pixel defects where the pixel should basically be unlit, but lit or blinks.
The presence of bright dot defects can be confirmed by inputting a full black signal (pattern).
(2)Dark Dot Defects
Black dot defects are pixel defects where the pixel should basically be lit, but does not lit, or is twice as bright when lit.
The presence of black dot defects can be confirmed by inputting a 100% full white signal (pattern).
R G B R G B
R G B R G B
G B R G B
G B R G B
R
R
R G B R G B
R G B R G B
G B R G B
G B R G B
R
R
No.1
Pixel
sequence
No.2
Pixel
sequence
No.1023
Pixel
sequence
No.1024
Pixel
sequence
No.1
Pixel line
No.2
Pixel line
Horizontally
Vertically
Direction
0.897mm(Horizontally)
Pixel pitch
0.299mm(Vertically)
Cell pitch
0.675mm
(Verticall)
Pixel pitch
(Cell pitch
1 pixel
(1 dot)
No.767
Pixel line
No.768
Pixel line
R Cell
G Cell
B Cell