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22 en | Maintenance UML-19P-90 LCD Monitor
F01U099396 | 1.0 | 2008.11 User’s Manual Bosch Security Systems, Inc.
9 Maintenance
To clean the LCD panel, wipe off water droplets or oil immediately with absorbent cotton or a
soft lint-free cloth. Staining and discoloration may occur if left on the panel for long periods.
If the surface (polarizer) of the LCD panel is dirty or stained, use absorbent cotton or a soft
lint-free cloth to remove the residue as follows:
1. Turn off the computer or display.
2. Do not spray any liquid directly on the screen. Dampen absorben cotton or a clean, soft,
lint-free cloth with water only (using a paper towel or dirty cloth can scratch the screen).
3. Gently wipe the screen starting from the top of the screen to bottom wiping in a
downward motion. Be careful not to press too hard to avoid damaging the screen.
4. To avoid streaking, wipe the screen again with another clean, dry, lint-free cloth.
Do not use any of the following as a cleaning agent:
– Ketone type materials
–Ethyl alcohol
–Ethyl acid
–Tolulene
– Methyl chloride
– Ammonia
Use of these materials may permanently damage the polarizer due to a chemical reaction.
Vertical or horizontal noise is
present in the picture in VGA
mode
Adjust the Clock and Phase in the Screen submenu.
Incorrect colors – 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 -
– 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 displayed
PC is operating with either a resolution or refresh rate that is not supported.
Change the PC timing mode to one of the valid combinations below:
Timing mode
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
Problem Solution
i
NOTICE! If water does not work, use a mild cleaner labeled for use with LCD panels, available
at office supply stores.