Trouble Shooting - Philips DELLP1230 Service Manual

Common Problems
The following table contains general information about common monitor problems you might encounter
COMMON SYMPTOMS
No Video/LED off No picture, monitor' s dead.
No Video/LED on No picture or no brightness, power LED has green color
No Video / LED amber No picture, power LED has amber color.
"No signal input from input 1 or 2" A RGB box with the message "No signal input from input 1 or 2 "
appears shows on screen.
"Frequency out of range" appears A red and cyan colored box with the message "Frequency out of
range" appears on screen.
Poor Focus Picture is fuzzy, blurry or ghosting
Shaky/Jittery Video Wavy picture or fine movement
Color Purity Problems Color is not uniform
Picture has color blotches or shades
Color Convergence Problems Characters show red or blue at edges
Missing Color Entire screen is purple or yellow
or Color Flood Entire screen is red, green or blue
Missing Pixels CRT screen has spots, specs or blemishes on the glass
WHAT YOU SEE
DELL P1230 M25P
.
POSSIBLE SOLUTIONS
·
Check connection integrity
·
Verify the AC outlet
·
Ensure power button depressed fully
·
Increase brightness & contrast controls
·
Perform monitor Self test feature check
·
Check signal cable for bent or broken pins
·
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).
·
Make sure the correct input port (1or 2) is selected.
·
Press a key on the PC keyboard or move the mouse to wake up the PC.
·
Check the signal cable connection between computer and monitor.
·
Use the monitor Self test feature described under trouble shooting.
·
Wait 15 seconds for Windows to reset video mode.
·
Manually reset video mode by following procedure:
o
Reboot PC.
o
Press F8 while reboot is processing.
o
Select safe mode.
o
Select Control Panel to decrease resolution.
·
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.
·
Perform monitor "Reset"
·
Check environmental factors
·
Relocate and test in other room
·
Activate the Degauss feature using the OSD degauss menu.
·
Reposition the monitor.
·
Check environmental factors (Speakers too close to monitor).
·
Adjust the purity by using the OSD "ADJUST PURITY"
·
Perform monitor reset (Select "Reset" in main menu).
·
Perform monitor Degauss.
·
Adjust the convergence by using the OSD "ADJUST CONVERGENCE"
·
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
·
If the blemish is on the outside of the glass, try cleaning the CRT screen
7
in "EXTRA CONTROLS" menu.
in EXTRA CONTROLS.