JVC LT-26AX5, Service Manual

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(No.YA344)1-7
2.4 TECHNICAL INFORMATION
2.4.1 LCD PANEL
This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the
conventional CRT (Cathode Ray Tube), as a display unit.
Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light
does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.
2.4.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
2.4.1.2 PIXEL FAULT
There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
„ 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.
„ 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.
„ 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.
Item
Specifications
LT-26AX5 LT-32AX5
Maximum dimensions ( W
×
H
×
D ) 626.0 mm
×
373.0 mm
×
51.0 mm 760.0 mm
×
450.0 mm
×
50.0 mm
Weight 4.7 kg 7.5 kg
Effective screen size Diagonal: 650 mm (H: 576 mm
×
V: 324 mm) Diagonal: 800 mm (H: 697 mm
×
V: 392 mm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Resolution Horizontally 1366
×
Vertically 768
×
RGB < W-XGA > 3147264 dots in total
Pixel pitch (pixel size) Horizontally: 0.4215 mm Vertically: 0.4215mm Horizontally: 0.51075 mm Vertically: 0.51075 mm
Displayed colour 16777216 colours 256 colours for R G and B
Brightness 500cd/m2
Contrast ratio 800 : 1 1000 : 1
Response time 8ms
View angle Horizontally: 170
°
Vertically: 170
°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight U-type Cold cathode fluorescent lamp
×
8 Direct-type Cold cathode fluorescent lamp
×
16
Power supply voltage in LCD 6.5 V
Power supply voltage in inverter 26.4 V 25.2 V
Panel interface system LVDS (Low Voltage Differential Signaling)