HP LD4200 HP LD4200 and LD4700 LCD Monitors User Guide - Page 40

Troubleshooting, Solving Common Problems - specifications

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A Troubleshooting Solving Common Problems The following table lists possible problems, the possible cause of each problem, and the recommended solutions. Problem No image is displayed. Possible Cause Power cord not connected. Power is on, power indicator is blue, but Screen needs adjustments. the screen appears extremely dark. Power indicator is amber. Monitor in power saving mode. Out of Range message appears. Input signal is out of frequency range. Solution Be sure the power cord is properly connected to the outlet. ● Verify that the outlet has power to it. ● Check that the fuse or breaker has not tripped or burned out. See if the power switch is turned on. May need service. Adjust brightness and contrast again. Backlight may need repair. Move the mouse or press any key on the keyboard. Turn off equipment and then back on. The signal from the PC (video card) is out of the vertical or horizontal frequency range of the monitor. Adjust the frequency range by referring to the specifications in this manual (maximum resolution: RGB - 1920 x 1080 @ 60Hz; HDMI - 1920 x 1080 @ 60Hz). NOTE: Vertical Frequency - to enable the user to watch the monitor display, screen image should be changed tens of times every second like a fluorescent lamp. The vertical frequency or refresh rate is the times of image display per second. The unit is measured in Hz. Horizontal Frequency - the horizontal interval is the time to display one vertical line. When 1 is divided by the horizontal interval, the number of horizontal lines displayed every second can be tabulated as the horizontal frequency. The unit is measured in kHz. 32 Appendix A Troubleshooting ENWW

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A
Troubleshooting
Solving Common Problems
The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
Problem
Possible Cause
Solution
No image is displayed.
Power cord not connected.
Be sure the power cord is properly
connected to the outlet.
●
Verify that the outlet has power to it.
●
Check that the fuse or breaker has
not tripped or burned out.
See if the power switch is turned on.
May need service.
Power is on, power indicator is blue, but
the screen appears extremely dark.
Screen needs adjustments.
Adjust brightness and contrast again.
Backlight may need repair.
Power indicator is amber.
Monitor in power saving mode.
Move the mouse or press any key on the
keyboard.
Turn off equipment and then back on.
Out of Range message appears.
Input signal is out of frequency range.
The signal from the PC (video card) is out
of the vertical or horizontal frequency
range of the monitor. Adjust the
frequency range by referring to the
specifications in this manual (maximum
resolution: RGB - 1920 x 1080 @ 60Hz;
HDMI - 1920 x 1080 @ 60Hz).
NOTE:
Vertical Frequency - to enable
the user to watch the monitor display,
screen image should be changed tens of
times every second like a fluorescent
lamp. The vertical frequency or refresh
rate is the times of image display per
second. The unit is measured in Hz.
Horizontal Frequency - the horizontal
interval is the time to display one vertical
line. When 1 is divided by the horizontal
interval, the number of horizontal lines
displayed every second can be tabulated
as the horizontal frequency. The unit is
measured in kHz.
32
Appendix A
Troubleshooting
ENWW