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PDF L1940T Data sheet ( Hoja de datos )
| Número de pieza | L1940T | |
| Descripción | LCD Monitor SERVICE MANUAL | |
| Fabricantes | HP | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L1940T (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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19" LCD Color Monitor
HP L1940T
SERVICE MANUAL
19” LCD Monitor
L1940T
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY
OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.
1
1 page  
19" LCD Color Monitor
HP L1940T
2. LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and which house the flat panel control logic,
brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
Monitor Block Diagram
CCFT Drive.
Flat Panel and
CCFL backlight
Power Board
(Include adapter and inverter)
AC-IN
110V-240V
Main Board
Audio board
Keyboard
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
Video signal, DDC
5
5 Page 
19" LCD Color Monitor
4.2 Factory Preset Display Modes
HP L1940T
Preset
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Pixel
Format
640 x 480
640 x 480
640 x 480
720 x 400
800 x 600
800 x 600
800 x 600
832 x 624
1024 x 768
1024 x 768
1024 x 768
1152 x 870
1152 x 900
1280 x 1024
1280 x 1024
Horz Freq
(KHz)
31.469
37.861
37.500
31.469
37.879
48.077
46.875
49.726
48.363
56.476
60.023
68.68
71.71
63.98
79.97
Horz
Polarity
-
-
-
-
+
+
+
±
-
-
+
-
-
+
+
Vert Freq (Hz)
59.940
72.809
75.000
70.087
60.317
72.188
75.000
74.551
60.004
70.069
75.029
75.06
76.05
60.02
75.02
Vert
Polarity
-
-
-
+
+
+
+
±
-
-
+
-
-
+
+
Pixel Clk
(MHz)
25.175
31.500
31.500
28.322
40.000
50.000
49.500
57.284
65.000
75.000
78.750
100.000
105.561
108.000
135.000
Source
VGA
VESA
VESA
VGA
VESA
VESA
VESA
MAC
VESA
VESA
VESA
Mac
Sun
VESA
VESA
4.3 Power Supply Requirements
PARAMETER
AC Input Voltage
AC Input Frequency
Inrush Current
Leakage Current
Power consumption
RANGE
90 to 265V
47 to 63 Hz
50A MAX AT 220VAC and 30A AT 120VAC
5 mA MAX at 120VAC
≤70W
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet L1940T.PDF ] | |
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