JVC PD-42WV74, Руководство по обслуживанию

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(No.52169)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.
2.2.1.1 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 0.304mm (1 pixel
0.897mm) horizontally and 0.693mm vertically.The cell is arrayed in each RGB color as shown in Fig. 1. One pixel is formed by inter-
lacing each RGB color cell.One cell size is 0.304mm horizontally and 0.693mm vertically.
Fig.1 Alignment of pixel (cell)
2.2.1.2 PIXEL FAULT
There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
(1) BRIGHT FAULT
In this pixel fault, a cell that should not light originally is lighting on and off.
For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
(2) DARK FAULT
In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.
For checking this pixel fault, input 100% of each R/G/B colour and find out the cell that is not lighting.
(3) FLICKER FAULT
In the pixel fault, a cell that should light originally or not light originally is flashing on and off.
For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB colour and find out the cell that is flashing on
and off.
B G R B G R
B G R B G R
G R B G R
G R B G R
B
B
B G R B G R
B G R B G R
G R B G R
G R B G R
B
B
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
0.912mm(Horizontally)
Pixel pitch
0.304mm(Vertically)
Cell pitch
0.693mm
(Verticall)
Pixel pitch
(Cell pitch)
1 pixel
(1 dot)
No.767
Pixel line
No.768
Pixel line
B Cell
G Cell
R Cell