Samsung SyncMaster 720T User Manual page 68

SyncMaster 720B/721B
Before calling for service, 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
screen. I cannot turn
on the monitor.
Downloaded from ManualMonitor.com Manuals
dealer.
Check List
Is the power cord connected
properly?
Can you see "Check Signal 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?
the phone number on the
Solutions
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 Preset Timing
Note: If the initial screen (the login
screen) does not appear, contact a
service center or your dealer.
You can see this message when the
signal from the video card exceeds
the maximum resolution and
frequency that the monitor can
properly handle.
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.
Please change to the recommended
mode during this one-minute period.
Modes)