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Full HD LCD Monitors Troubleshooting | en 49
Bosch Security Systems, Inc. User’s Manual F.01U.172.600 | 1.0 | 2010.10
8 Troubleshooting
Problem Solution
No image displayed on screen – Check that the power cord of the monitor is
securely connected into the wall outlet or grounded
extension cable or strip.
– Power switch should be in the ON position and the
LED lit.
– Check that the Brightness and/or Contrast
adjustments of the display have not been turned
down to minimum levels.
The message "Going to
Sleep" is displayed
– The signal cable should be completely connected to
the video card/computer.
– The video card should be completely seated in its
slot and the computer switched ON.
Display image is not
centered, is too small, or too
large in the PC mode
Push the down key to activate the Auto Adjust function.
- or -
Adjust the Frequency and Phase in the PC OSD submenu.
Vertical or horizontal noise is
present in the picture
Push the down key to activate the Auto Adjust function.
- or -
Adjust the Frequency and Phase in the PC OSD submenu.
Incorrect colors Select 5500°K, 6500°K, or 7500°K in the Color Tone
menu.
- or -
Use the Reset function to reset to the default settings.
The error message “Out of
Range” is displayed
PC is operating with either a resolution or timing mode
that is not supported by the monitor. Change the PC
timing mode to one of the valid combinations below:
– 640 x 480; 60/72/75 Hz
– 720 x 400; 70 Hz
– 800 x 600; 60/75 Hz
– 1024 x 768; 60/75 Hz
– 1280 x 768; 60 Hz
– 1280 x 960; 60 Hz
– 1280 x 1024; 60/75 Hz
– 1366 x 768; 60 Hz