HP Lp2275w User Guide

A Troubleshooting
Solving Common Problems
The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
ProblemPossible CauseSolution
Screen is blank.Power cord is disconnected.Connect the power cord.
Power button on front panel of the
monitor is turned off.Press the front panel power button.
NOTE: If pressing the power button has no effect, press
and hold the power button for 10 seconds to disable the
power button lockout feature.
Master power switch on...

ProblemPossible CauseSolution
monitor enters into low-power mode. For example, if the
Display Off time is set to 5 minutes from the current time
and the Activity Extension is set to 10 minutes, the HP
Display LiteSaver will not act ually turn off the display until
10 minutes of inactivity has elapsed, even though the
Display Off time is 5 minutes from now.
The HP Display LiteSaver may not
be compatible with the computer
system. Some notebook computers
are not compatible and the monitor
power can not be...

Using the Worldwide Web
For the online access to technical support information, self-solve tools, online assistance, community
forums of IT experts, broad mutlivendor knowledge base, monitoring and diagnostic tools, go to
http://www.hp.com/support
Preparing to Call Technical Support
If you cannot solve a problem using the trouble shooti ng tips in this section, you may need to call
technical support. Have the following information available when you call:
● The monitor
● Monitor model number
● Serial...

B Technical Specifications
NOTE:All performance specifications  are provided by the component manufacturers. Performance
specifications represent the highest specification  of all HPs component manufacturers typical level
specifications for performance and actual pe rformance may vary either higher or lower.
HP LP2275w Model
Table B-1  HP LP2275w Specifications
Display
Type55.9 cm wide screen
TFT LCD22 inches wide screen
Viewable Image Size55.9 cm diagonal22–inch diagonal
Tilt Adjustment-5 to 30°
Swivel...

Relative Humidity20 to 80% 
Power Source90 – 265 VAC, 45/63 Hz 
Altitude:
Operating
Storage
0 to 3657.6 m
0 to 12192 m0 to 12,000 feet
0 to 40,000 feet
Power Consumption (maximum)

Relative Humidity20 to 80% 
Power Source90 – 265 VAC, 45/63 Hz 
Altitude:
Operating
Storage
0 to 3657.6 m
0 to 12192 m0 to 12,000 feet
0 to 40,000 feet
Power Consumption (maximum)

Recognizing Preset Display Resolutions
The display resolutions listed below are the most commonly used modes and are set as factory defaults.
This monitor automatically  recognizes these preset modes and th ey will appear properly sized and
centered on the screen.
HP LP2275w Model
Table B-3   HP LP2275w Factory Preset Modes
PresetPixel FormatHorz Freq (kHz)Vert Freq (Hz)
1640 × 48031.4759.94
2720 × 40031.4770.08
3800 × 60037.8860.32
4800 × 60046.8875.00
5832 × 62449.7274.55
61024 × 76848.3660.00
71024 ×...

PresetPixel FormatHorz Freq (kHz)Vert Freq (Hz)
91024 × 76868.6885.00
101152 × 87068.6875.06
111152 × 90061.8065.96
121280 × 76847.39660.00
131280 × 96060.0060.00
141280 × 102463.9860.02
151280 × 102479.9875.02
161280 × 102491.1585.02
171600 x 100061.64860.00
181600 x 120075.0060.00
191600 x 120093.8075.00
201680 x 105065.2960.00
211920 x 108067.15860.00
221920 x 120074.0460.00
23 1920 x 1200 74.56 60.00
Entering User Modes
The video controller signal may occasionally call for a mode that is not preset...

Energy Saver Feature
When the monitor is in its normal operating mode, the monitor uses less than 95 watts (LP2275w Model)
or 120 watts (LP2475w Model) of power and the Power light is green.
The monitor also supports a reduced power state. The reduced power state will be entered into if the
monitor detects the absence of either the horizontal sync signal and/or the vertical sync signal. Upon
detecting the absence of these signals, the monitor sc reen is blanked, the backlight is turned off, and
the...

C Agency Regulatory Notices
Federal Communications Commission Notice
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in  accordance with the instructions, may cause harmful
interference to radio...