Samsung SyncMaster 721N User Manual page 33

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Check List
Before calling for assistance, check the information in this section to see if you can remedy
any problems yourself. If you do need assistance, please call
Information section or contact your
Symptom
No images on the
Is the power cord connected
screen. I cannot
properly?
turn on the
Can you see "Check Signal
monitor.
Cable" on the screen?
If the power is on, reboot the
computer to see the initial
screen(the login screen),
which can be seen.
Can you see "Not Optimum
Mode","Recommended
Mode 1280 x 1024 60Hz" on
the screen?
dealer.
Check List
Check the power cord connection
and supply.
Check the signal cable connection.
If the initial screen (the login screen)
appears, boot the computer in the
applicable mode (the safe mode for
Windows ME/XP/2000) and then
change the frequency of the video
card.
(Refer to the
Note: If the initial screen (the login
screen) does not appear,
the Service Center or your
You can see this message when the
signal from the video card exceeds
the maximum resolution and
frequency that the monitor can
handle properly.
Adjust the maximum resolution and
frequency that the monitor can
handle properly.
If the display exceeds SXGA or
75Hz, a "Not Optimum
Mode","Recommended Mode
1280 x 1024 60Hz" message is
displayed. If the display exceeds
85Hz, the display will work properly
but the "Not Optimum
Mode","Recommended Mode
1280 x 1024 60Hz" message
appears for one minute and then
disappears.
the phone number on the
Solutions
Preset Timing
Modes)
contact
dealer.

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