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Troubleshooting: Dell E771p Color Monitor User's Guide

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Troubleshooting: Dell™ E771p Color Monitor User's Guide

Monitor Specific Troubleshooting • Common Problems • Product Specific Problems

Monitor Specific Troubleshooting

Self-Test Feature Check (STFC)

Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:

Turn off both your computer and the monitor.
Unplug the video cable from the back of the computer.
Turn on the monitor.
If the monitor is functioning properly, you will see a flashing RGB box with a white border and black text inside, as shown in the following illustration:

This box also appears during normal system operation if the video cable becomes disconnected or damaged. This box will remain on for one minute, go off five seconds, then on for one minute, and will repeat cycle.

Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor.
While in self-test mode, the LED remains green and the pattern remains on and stationary.

If your monitor screen still remains dark after you use the previous procedure, check your video controller and computer system; your monitor is functioning properly.

On-Screen Messages

If there is something wrong with the input signal, a message appears on the screen although the power indicator LED is still on. The message may indicate that the monitor is out of scan range or that you need to check the signal cable.

OSD Lock

If the OSD is locked, the following message window appears when you push any of the control buttons.

Switch off OSD lock.

Common Problems

The following table contains general information about common monitor problems you might encounter.

COMMON SYMPTOMS	WHAT YOU SEE	POSSIBLE SOLUTIONS
No Video/LED off	No picture, monitor’s dead.	Check connection integrity Verify the AC outlet Ensure power button depressed fully
No Video/LED on	No picture or no brightness, power LED has green color	Increase brightness & contrast controls Perform monitor Self test feature check Check signal cable for bent or broken pins
No Video / LED amber	No picture, power LED has amber color.	Check that the PC power is plugged in and turned on. Check that signal cable is firmly attached to the video port of the PC (blue coded video port). Hit a key on the PC keyboard or move the mouse to wake up the PC.
"Check signal cable" appears	A RGB box with the message "Check signal cable" shows on screen.	Check the signal cable connection between computer and monitor. Use the monitor Self test feature described under trouble shooting.
"Frequency out of range" appears	A red and cyan colored box with the message "Frequency out of range" appears on screen.	Wait 15 seconds for Windows to reset video mode. Manually reset video mode by following procedure: Reboot PC. Press F8 while reboot is processing. Select safe mode. Select Control Panel to decrease resolution. Restart your computer.
Poor Focus	Picture is fuzzy, blurry or ghosting	Eliminate video extension cables. Perform monitor reset (Select "Reset" in main menu). Select "Moiré" from advanced controls and set H & V Moiré at 0%. Decrease brightness & contrast controls Lower video resolution or increase font size.
Shaky/Jittery Video	Wavy picture or fine movement	Perform monitor "Reset" Check environmental factors Relocate and test in other room
Color Purity Problems	Color is not uniform Picture has color blotches or shades	Activate the Degauss feature using the OSD degauss menu. Reposition the monitor. Check environmental factors (Speakers too close to monitor).
Color Convergence Problems	Characters show red or blue at edges	Perform monitor reset (Select "Reset" in main menu). Perform monitor Degauss. Adjust "Rotation" in geometry menu.
Missing Color or Color Flood	Entire screen is purple or yellow Entire screen is red, green or blue	Check that signal cable is firmly attached to the video port of the PC (blue coded video port). Perform monitor reset (Select "Reset" in main menu) Perform monitor Self test feature. Check signal cable for bent or broken pins. Reset the video card
Missing Pixels	CRT screen has spots, specs or blemishes on the glass	If the blemish is on the outside of the glass, try cleaning the CRT screen
Brightness Problems	Picture too dim or too bright	Perform monitor "Reset" Adjust brightness & contrast controls
Geometric Distortion	Screen not sized or centered correctly	Perform monitor "Reset" Ensure monitor is in proper video mode Adjust the appropriate geometric control
Moiré (Thin Curvy Lines)	Screen shows wavy or elliptical lines Screen shows wood grain patterns	Ensure monitor is in proper video mode Adjust horizontal or vertical size Clear the moiré pattern by using the OSD "Moiré" menu in "extra controls" menu. Explanation of Moiré patterns.
Audible Noise Problems	Has humming sound or high frequency squeal	Ensure monitor is in proper video mode Reposition the monitor A loud hum when turning on or during manual degaussing is normal
CRT Scratched	Screen has scratches or smudges	Turn monitor off and clean the screen, see Maintenance instructions
Safety Related Issues	Visible signs of smoke or sparks	Do not perform any troubleshooting steps Switch off the monitor and disconnect the mains cord. The monitor needs to be replaced.
Intermittent Problems	Monitor malfunctions on & off	Check connection integrity of mains cables. Check the signal cable connection between computer and monitor. Ensure monitor is in proper video mode. Perform monitor "Reset" Use the monitor Self test feature described under trouble shooting.

PRODUCT SPECIFIC SYMPTOMS

SPECIFIC SYMPTOMS	WHAT YOU SEE	POSSIBLE SOLUTIONS
Picture size	Picture is too large or too small.	Adjust the Horizontal and/or Vertical Size. Adjust the Zoom.
Iterative picture	Picture has a double image	Eliminate the use of a video extension cable and/or video switch box.
Unstable picture	Picture is flickering.	Increase your refresh rate.
Operation problem	Problem with OSD	Click here for OSD menu operations.
OSD Locked		Switch off OSD lock.

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