Akai LCT42Z7TAP, Service Manual

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Product Specification
LC420WU1
Liquid Crystal Display
1. General Description
The LC420WU1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 42.02 inch diagonally
measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 2-port LVDS interface.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
CN1
(51pin)
LVDS
2Port
Source Driver Circuit
TFT - LCD Panel
(1920
×
RGB
×
1080 pixels)
G1
S1 S1920
G1080
Back light Assembly (20 CCFL)
Mini-LVDS(RGB)
Timing Controller
[LVDS Rx + DCR + ODC
integrated]
G
a
te
Driv
er Cir
c
uit
+24.0V
GND
EEPROM
Power Circuit
Block
SDA
SCL
+12.0V
SDRAM
MEM
CTRL
RGB
VBR for DCR
VBR_OUT
Status
12Pin X 2CNS
2Pin X 1CN
DCR
Enable
General Features
Viewing angle free ( R/L 178 (Typ.), U/D 178 (Typ.)) Viewing Angle (CR>10)
8-bit, 16.7 M colors Color Depth
1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement Pixel Format
550 cd/m
2
(Center 1point ,Typ.) Luminance, White
Total 182.3W (Typ.) (Logic=7.3W , Inverter=175W [I
BL
= 6.5mArms] ) Power Consumption
14.5K g (Typ.) Weight
Transmissive mode, Normally black Display Mode
Hard coating(3H), Anti-glare treatment of the front polarizer Surface Treatment
0.4845 mm x 0.4845 mm Pixel Pitch
1005.6(H) x 609.8 (V) x 55.5 mm(D) (Typ.) Outline Dimension
42.02 inches(1067.31mm) diagonal Active Screen Size
78／128