Troubleshooting - Bosch UML-323-90 User Manual

Bosch High Performance HD LED Monitors
8

Troubleshooting

Problem
No image displayed on
screen
Display image is not
centered, is too small or
too large in the PC mode
Vertical or horizontal
noise is present in the
picture
Incorrect colors
The error message "Out
of Range" is displayed
Bosch Security Systems, Inc.
Solution
– 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.
Push the down arrow key to activate the Auto Adjust function.
- or -
Adjust the Frequency and Phase in the PC OSD submenu.
Push the down arrow key to activate the Auto Adjust function.
- or -
Adjust the Frequency and Phase in the PC OSD submenu.
Select a color temperature in the Color Tone menu.
- or -
Use the Reset function to reset to the default settings.
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 (60/72/75Hz)
– 720 x 400 (70Hz)
– 800 x 600 (60/75Hz)
– 1024 x 768 (60/75Hz)
– 1280 x 768 (60Hz)
– 1280 x 960 (60Hz)
– 1280 x 1024 (60Hz)
– 1366 x 768 (60Hz)
– 1600 x 1200 (60Hz)
– 1920 x 1080 (60Hz)
User's Manual
Troubleshooting | en 35
F.01U.134.499 | 2.0 | 2012.10