23
en | Trouble Shooting Guide
UML-190-90
F01U075712 | 1.0 | 2007.09
Installation Manual
Bosch Security Systems, Inc.
8
Trouble Shooting Guide
Problem
Solution
No image is displayed on
screen
1.
Check that the power cord of the monitor is securely con-
nected into the wall outlet or grounded extension cable or
strip.
2.
Power switch should be in the ON position and the LED lit.
3.
Check that the Brightness and/or Contrast adjustments of the
display have not been turned down to minimum levels.
“Check Input Signal”
message is displayed in
PC mode
1.
The signal cable should be completely connected to the video
card/computer.
2.
The video card should be completely seated in its slot and the
computer switched ON.
Display image is not cen-
tered, is too small, or too
large in the PC mode
Push the down key to activate the Autoset function.
Vertical or horizontal
noise is present in the
picture
Adjust the Clock and Phase in the OSD submenu.
Incorrect colors
1.
Press the Menu button on the front panel of the monitor, then
press the right arrow to select the Color menu. Press the
down arrow on the front panel and select 9300K or 6500K.
- or -
2.
Press the Menu button on the front panel of the monitor, then
press the right arrow to select the Utility menu. Press the
down arrow on the front panel and select Recall to reset to
the default settings.
The error message
“Unsupport Mode” is dis-
played
PC is operating with either a resolution or timing mode that is not
supported by the UML-190-90. Change the PC timing mode to one
of the valid combinations below:
640 x 480; 60/72/75 Hz
800 x 600; 60/72/75 Hz
1024 x 768; 60/70/75 Hz
1280 x 1024; 60/75 Hz
