Daewoo L1711MN User Manual page 11

This guideline will prepare you to a self-checking test before calling for service.
PROBLEM
OUT OF RANGE
POWER LED is
illuminated amber
IMAGE IS NOT
CENTERED
LCD MONITOR
DOES NOT ENTER
POWER SAVING
MODE (AMBER)
POWER LED not
light up (NO
POWER)
NO VIDEO FROM
SCREEN
NO SIGNAL
OSD buttons not
functioning
NO SOUND
FUZZY LINES
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ACTION
Either the frequency of the sync input is beyond the operating range
or the resolution is beyond the supported range of the LCD monitor
o Horizontal Frequency: 31.5-91.1kHz
o Vertical Frequency: 43-85Hz
o Maximum supported resolution 1280 x 1024
For you to change to a valid frequency setting, refer to you Technical
Info. section for more detail on compatible display mode
Display power management mode
There is no sync signal
The signal cable is not properly secure
Check the computer power and graphic adapter configuration
If the problem persists, please contact your local authorized dealer.
Image adjustment has not been configured in the current operating
mode. Use OSD buttons to set up the image according to your
comfortable configuration or press "Auto" button for auto adjustment
Computer video signal is not VESA DPMS standard. Either the PC or
the video controller card is not using the VESA DPMS power
management function
Check power cable is properly plug in to power adapter and power
outlet.
Check if the VGA cable or the optional DVI cable is properly connected
between the LCD monitor and the computer.
Check if the VGA cable or the optional DVI cable is properly connected
between the LCD monitor and the computer.
Check if the power adapter is properly connected to the power outlet.
Reset the LCD monitor by power off and power on from the power
switch.
Check if the 3.5 mm stereo audio cable is properly connected at both
ends. Check if the speakers are muted.
Depending on the images displayed. You may occasionally see some
horizontal fuzzy lines appearing on the images. This is a normal
condition and can be corrected by activating the Automatic Adjustment
feature as described in page 5.
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TROUBLESHOOTING
11