Read Sharp PN-Y475 Service Manual online
PN-Y325/Y425/Y475/Y555 HARDWARE DESCRIPTIONS
9 - 1
CHAPTER 9. HARDWARE DESCRIPTIONS
1. OVERVIEW
1-1. SYSTEM COMPONENT
This monitor consists of LCD module, Main PWB, Speed relay PWB, T-CON PWB, LED/KEY PWB, Power PWB and LED Driver PWB.
1-2. LCD UNIT
No
Items
PN-Y325
PN-Y425
PN-Y475
PN-Y555
1 LCD
32”
Class
Wide
LCD（AUO） 42”
Class
Wide
LCD（LG） 47”
Class
Wide
LCD（LG） 55”
Class
Wide
LCD（LG）
2
Display size
32 inch (80.1cm diagonal)
42 inch (106.7cm diagonal)
47 inch (119.3cm diagonal)
55 inch (138.8cm diagonal)
3
Max resolution
1920 x 1080
4
Max colors
1677 million color
10.6 billion color
5
Pixel
pitch
0.364 0.485 0.542 0.630
6 Max
brightness
350cd/㎡ 450cd/㎡
7 Contrast
ratio
3000：1 1500：1
8
Viewing angle
Up, down, left and right 178°
9
Display screen size
698.4 X 392.9 mm
930.2 X 523.3mm
1039.7 X 584.8mm
1209.6 X 680.4mm
10
Panel response speed
8ms
12ms
11 Backlight
Edge
LED
12
Backlight life
50,000(landscape, horizontal installation)
13 Screen
uniformity
70%
1-3. Main PWB
Main PWB controls the audio and video input/output.
The menu for the monitor and the set value of PICTURE in process mode is stored to IC3804. (Refer to the “4. PARTS LAYOUT“ for
location.)
1-4. Temperature sensor
Temperature sensor is mounted to U4251 on Main PWB. (Refer to the “4. PARTS LAYOUT“ for location.)
Backlight brightness is decreased once abnormal temperature is detected.
In addition, the monitor enters standby state once the temperature is further increased.
*The power lamp blinks in red and green alternately once the abnormal temperature is detected.
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