Technical Data - HP L1940 Service Manual

LCD Panel
Type NR. :LM190E02_A5 (LPL)
Number of Pixels. : 1280 (H) x 1024 (V)
Physical Size. : 404.2(H)*330.0(V)*20.0(D) mm
Pixel Pitch. : 0.294 x 0.294 mm
Color pixel arrangement. : RGB stripes arrangement
Support Color. : 8 bit (16.7M Colors)
Display Mode. : Transmissive Mode,Normally Black
Backlight. : CCFL edge light system
Active area. (WxH). : 376.32(H) x 301.056(V)mm (19
Viewing Angle. : Vertical 176 degree, Horizontal 176 degree
Contrast ratio. : 500:1
Luminance. : 250 cd/m
Scanning frequencies
H-Frequency. : 30K - 83 K Hz
V-Frequency. : 56 - 76 Hz
: 90-265 V AC, 50/60 ± 2 Hz
Power input.
: 90-265 V AC, 50/60 ± 2 Hz
Power input.
The input signals can be applied in two different modes:
1). VESA Analog
The video input consists of red, green, and blue signals. The video
signals are analog levels, where 0V corresponds to black and 700mV is
the maximum signal amplitude. Input impedance of video pins is 75 ohm
+- 1%. The VESA VSIS specification states the video voltages shall be
700 mV +10%/-5% with 12% for the overshoot. The apability of sync
signal inputs shall include separate sync. input impedance: 2k2 ohms The
signals are defined as follow:
Separate sync 3.3V and 5 volt TTL level ,Positive/Negative
2). Intel DVI Digital
Input signal: Four channel TMDS signals. The digital interface shall
be comprised of 2 electrical layer component: a TMDS interface for low-
voltage differential serial encoding of the digital display data(Panel Link
compliant) and a DDC2B electrical interface. Refer to the Digital Display
Working Group(DDWG) document,
Specification, Revision 1.0 for the exact requirements.
Pin Assignment
Pin No. Assignment
Red video input
1
2
Green video input
3
Blue video input
4
GND
Cable detect
5
Red video GND
6
Green video GND
7
8
Blue video GND
Input DVI-D connector pin

Technical Data

(CR=10)
2
(Typ)
Digital Visual Interface(DVI)
Assignment
Pin No.
9
DDC +3.3V OR +5V
10
GND
11
GND
12 Serial data line (SDA)
H-sync
13
V-sync
14
15
Data clock line (SCL)
Pin No.
1
2
3
4
5
6
7
8
9
10
diagonal)
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Unit dimension / Weight
Set dimension (incl. pedestal)
Net weight.
Tilt and swivel base
Basic base: tilt angle
swivel rotation
Shipping dimension/Weight
Carton dimension.
Gross weight.
Susceptibility of display to external environment
Temperature Ranges
Operating Temperature (Independent of altitude) : 5°C to 35°C.
Non-Operating Temperature (Independent of altitude) : -20°C to 60°C.
Humidity
Operating (non-condensing) : 20% to 80%
Non-Operating (38.7°C maximum wet bulb temperature) : 5% to 90%
Altitude
Operating 0 to 12,000 feet [3,658 m].Equivalent to 14.7 to 10.1 psia.
Non-Operating 0 to 40,000 feet [12,192 m]. Equivalent to 14.7 to 4.4 psia
HP L1940
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Description
T.M.D.S data2-
T.M.D.S data2+
T.M.D.S data2 shield
No connect
No connect
DDC clock
DDC data
No connect
T.M.D.S data1-
T.M.D.S data1+
T.M.D.S data1 shield
No connect
No connect
+5V power
Ground (for +3.3V)-Cable detect
Hot plug detect
T.M.D.S data0-
T.M.D.S data0+
T.M.D.S data0 shield
No connect
No connect
T.M.D.S clock shield
T.M.D.S clock+
T.M.D.S clock-
: 413(W) * 477(H) * 265(D) mm
: 8.4 kg
: -5 ° to +35 ° ( operation )
: ± 90°
: 524(W) * 239(D) * 513(H) mm
: 10 Kg
3