Bosch UML-262-90 User Manual

Full HD LCD Monitors

Troubleshooting | en

Bosch Security Systems, Inc.

User’s Manual

F.01U.172.600 | 1.0 | 2010.10

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