Sharp PN-U423 (serv.man2) Service Manual ▷ View online
PN-U553/U473/U423 HARDWARE DESCRIPTIONS
8 - 1
CHAPTER 8. HARDWARE DESCRIPTIONS
1. CIRCUIT DESCRIPTIONS
1. CIRCUIT DESCRIPTIONS
1-1. SYSTEM COMPONENT
・
This machine have adopted the liquid crystal module of 55 / 47 / 42 type.
・
By using the (edge-light type) high-brightness LED backlight,55/47 type to achieve the brightness 700cd/m2.
42 type 500cd/m2.
・
This machine adopt a 1920 × RGB × 1080 dot panel.
・
This machine adopt a AUO panel.
・
This 55/42 type adopt a AUO panel. 47 type adopt the LG panel.
・
This machine adopts the DisplayPort of the input terminal. But output terminal not equipped with.
HDMI is equipped with only one port.
In addition, the DVI terminal needed a interface expansion board(PN-ZB01), but are standard equipment.
1-2. UNIT COMPOSITION
PN-U553
PN-U473
PN-U423
LCD module
P550HVN03.0(AUO)
LD470EUP(LG)
P420HVN03.0(AUO)
Back light
LED edge
Brightness 700cd/㎡ 500cd/㎡
Contrast 4000:1
1300:1
4000:1
Power consumption
130W
115W
PWB Main
PWB
○
○
○
Power PWB
○
○
○
Relay PWB
-
○
-
LED PWB
○
○
○
KEY PWB
○
○
○
Harness Inlet
harness
○(3pin)
○(3pin)
○(3pin)
Speaker
○
○
○
1-3. LCD UNIT
No Item
PN-U553
PN-U473
PN-U423
1 Screen
size
(Diagonal)
55" Class [54-5/8 inch
(138.8cm) diagonal]
TFT LCD
47" Class [46-15/16
inch (119.3cm)
diagonal] TFT LCD
42" Class [42 inch
(106.7cm) diagonal]
TFT LCD
2
Max. resolution
1920 x 1080
3
Max. colors
Approx. 1.06 billion colors
4
Pixel pitch
0.630 mm (H) ×
0.630 mm (V)
0.542 mm (H) ×
0.542 mm (V)
0.485 mm (H) ×
0.485 mm (V)
5 Max.
brightness
700cd/㎡ 500cd/㎡
6 Video
color
system
NTSC 72%
7 Contrast
ratio
4,000：1 1,300：1 4,000：1
8 Viewing
angle
178° right/left/up/down (contrast ratio ≥ 10)
9
Backlight
LED backlight (Top edge)
LED backlight (L/R edge)
PN-U553/U473/U423 HARDWARE DESCRIPTIONS
8 - 2
10
Backlight life
50,000(landscape, horizontal installation)
11 Screen
uniformity
70%
PN-U553/U473/U423 HARDWARE DESCRIPTIONS
8 - 3
1-4．I/F PWB Unit
Type
Input signal
terminal
PC Display
port
1
DVI-D connector
1
D-sub15pin 1
3.5mm stereo mini-jack
1
D-sub9pin 1
DVI-I connector
-
BNC connector
-
AV HDMI
connector
1
BNC connector
1
RCA connector (Red/White)
1
S terminal connector
-
Output signal
terminal
PC DVI-D
connector
1
D-sub9pin 1
Display port
-
3.5ｍｍ stereo mini-jack
-
Modular connector
-
AV
RCA connector (Red/White)
1
Speaker output terminal (L/R)
-
LAN terminal
1
USB terminal(Type A)
-
PN-U553/U473/U423 HARDWARE DESCRIPTIONS
8 - 4
2. BLOCK DIAGRAM
■ BLOCK DIAGRAM
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