JVC LT-52GZ79 Service Manual page 7

2.3 MAIN DIFFERENCE LIST
Item
POWER CORD
ANALOG PWB
SW PWB
LED PWB
MAIN POW ASSY
DC-DC PWB
DIGITAL PWB
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.
Item
Maximum dimensions ( W × H × D ) 119.2 cm × 68.8 cm × 5.9 cm
Weight
Screen size
Aspect ratio
Drive device / system
Number of Pixels
Pixel pitch (pixel size)
Displayed colour
Brightness
Contrast ratio
Response time (G to G)
View angle
Surface polarizer
Colour filter
Backlight
Power supply voltage in LCD
Power supply voltage in inverter
Panel interface system
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 color 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 color and find out the cell that is flashing on
and off.
LT-52GZ79 LT-52GZ79/BA
EU Type (2 Pins) EU Type (2 Pins)
SFL-1237A-H2
SFL-7221A-H2
SFL-8728A-H2
SFL-90A5A-H2 SFL-90A5A-H8
SFL-91A1A-H2 SFL-91A1A-H8
SFL0D403A-H2 SFL0D403A-H8
19.0 kg
Diagonal: 132.1 cm (H: 93.1 cm × V: 52.4 cm)
16 : 9
a-Si-TFT active matrix system
Horizontally 1920 × Vertically 1080
Horizontally: 0.6 mm, Vertically: 0.6 mm
16777216 colours 256 colours for R G and B
2
500 cd/m
3000 : 1
6 ms
Horizontally: 178°, Vertically: 178°
Anti-Glare type Low reflective coat
Vertical stripe
Cold cathode fluorescent lamp × 24
12 V
24 V
LVDS (Low Voltage Differential Signaling)
LT-52GZ79/BA
EU Type (2 Pins)
SFL-1237A-H8 SFL-1237A-H2
SFL-7221A-H8 SFL-7221A-H2
SFL-8728A-H8 SFL-8728A-H2
SFL-90A6A-H2
SFL-91A1A-H2
SFL0D403A-H2
Specifications
LT-52GZ79/S
UK Type (3 Pins)
SFL-1237A-H2
SFL-7221A-H2
SFL-8728A-H2
SFL-90A5A-H2
SFL-91A1A-H2
SFL0D404A-H2
(No.YA665<Rev.001>)1-7