HP LP2275w Service Manual

22" LCD Color Monitor HP LP2275w
19
REMARK:
1) MCU initialize.
2) Is the EEprom blank?
3) Program the EEprom by default values.
4) Get the PWM value of brightness from EEprom.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Save the power key status into EEprom.
Turn on the LED and set it to green color.
Scalar initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re any signals coming?
13) Does the scalar send out an interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog port?
16) Display "No connection Check Signal Cable" message. And go into standby mode after the message
disappear.
17) Program the scalar to be able to show the coming mode.
18) Process the OSD display.
19) Read the keyboard. Is the power key pressed?

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