HP L1940T Service Manual

19" LCD Color Monitor HP L1940T
5
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.
Video signal, DDC
Power Board
(
Include ada
p
ter and inverter
)
Flat Panel and
CCFL backlight
Main Board
Audio board
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
110V-240V
Monitor Block Diagram
Keyboard

HP L1940T Specifications

General

3D	No
Pixel pitch	0.294 x 0.294 mm
Aspect ratio	5:4
Response time	8 ms
Display diagonal	19 \
Display resolution	1280 x 1024 pixels
Vertical scan range	56 - 76 Hz
Horizontal scan range	30 - 83 kHz
Viewing angle, vertical	135 °
Contrast ratio (dynamic)	-
Contrast ratio (typical)	700:1
Display number of colors	16.78 million colors
Viewing angle, horizontal	140 °
Display brightness (typical)	300 cd/m²
Supported graphics resolutions	1280 x 1024 (SXGA)
On/off switch	Yes
USB hub version	2.0
DVI-I ports quantity	0
USB Type-A downstream ports quantity	2
Pivot angle	0 - 90 °
Tilt angle range	-5 - 35 °
Panel mounting interface	100 x 100 mm
AC input voltage	95 - 265 V
AC input frequency	50 - 60 Hz
Power consumption (max)	60 W
Power consumption (average)	33 W
Power consumption (standby)	2 W
Power consumption (typical)	40 W
Operating temperature (T-T)	5 - 35 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	20 - 80 %
Package depth	241 mm
Package width	508 mm
Package height	521 mm
Package weight	10200 g
Sustainability certificates	ENERGY STAR
Certification	CSA, CE, CISPR, FCC, ISO, TCO, VCCI, TUV, MPR-II
Country of origin	China

Weight and Dimensions

Depth (without stand)	273 mm
Width (without stand)	413 mm
Height (without stand)	362 mm
Weight (without stand)	8400 g