HP LP2275w Service Manual

22" LCD Color Monitor HP LP2275w
49
10. White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding
White-Balance adjustment.
1. How to do the Chroma-7120 MEM .Channel setting
A. Reference to chroma 7120 user guide
B. Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the
TEXT description Following is the procedure to do white-balance adjust
2. Setting the color temp. You want
A. 9300k color:
9300 color temp. parameter is x = 283 ±15, y = 297 ±15, Y> 200 cd/m
2 ,
B. sRGB color:
sRGB color temp. parameter is x = 313±15, y = 329 ±15, Y>230 cd/m
2
)
C. 6500K color:
6500K color temp. parameter is x = 313±15, y = 329 ±15, Y>230 cd/m
2
)
3. Into factory mode of HP LP2275W:
Turn on power, press the menu button, pull out the power cord, and then plug the power cord. Then the factory
OSD will be at the left top of the panel.
4. Bias adjustment:
Set the Contrast
to 80
Adjust the Brightness
to 90.
5. Gain adjustment :
Move cursor to “-F-” and press MENU key
A. Adjust 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283±15, y = 297 ±15, Y>200 cd/m
2
3. Switch the chroma-720 to RGB MODE (with press “MODE” button to change )
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached
the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached
the value G=100
6. Adjust the BLUE of color 9300K on factory window until chroma 7120 indicator reached
the value B=100
7. Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100±2

HP LP2275w Specifications

General

3D	No
Panel type	PVA
Pixel pitch	0.282 x 0.282 mm
Response time	6 ms
Display diagonal	22 \
Display resolution	1680 x 1050 pixels
Display technology	LCD
Vertical scan range	48 - 85 Hz
Horizontal scan range	30 - 93 kHz
Contrast ratio (typical)	1000:1
Display number of colors	-
Display brightness (typical)	300 cd/m²
Supported graphics resolutions	1280 x 1024 (SXGA), 1440 x 900 (WXGA+), 640 x 480 (VGA), 800 x 600 (SVGA)
Storage temperature (T-T)	20 - 60 °C
Operating temperature (T-T)	5 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	20 - 80 %
Non-operating relative humidity (non-condensing)	5 - 90 %
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	85 W
Power consumption (standby)	2 W
Power consumption (typical)	56 W
Plug and Play	Yes
Tilt angle range	-5 - 30 °
Height adjustment	100 mm
Cable lock slot type	Kensington
Panel mounting interface	100 x 100 mm
USB hub version	2.0
HDMI ports quantity	0
USB Type-A downstream ports quantity	4
Product color	Black
Country of origin	China
Dimensions (W x D x H) (imperial)	19.9 x 10 x 18.8 \
Package weight	11300 g

Weight and Dimensions

Depth (with stand)	253 mm
Width (with stand)	506 mm
Height (with stand)	477 mm
Depth (without stand)	82.6 mm
Height (without stand)	328 mm
Weight (without stand)	8500 g