User Manual BDL4211x
4
2 SAFETY AND TROUBLESHOOTING INFORMATION
2.1 SAFETY PRECAUTIONS AND MAINTENANCE
WARNING: Use of controls adjustments or procedures other than those specified in this
documentation may result in exposure to shock electrical hazards and/or mechanical
hazards.
Read and follow these instructions when connecting and using your computer monitor:
• Unplug the monitor if you are not going to use it for an extensive period of time.
• Unplug the monitor if you need to clean it with a slightly damp cloth. The screen many be
wiped with a dry cloth when the power is off. However, never use alcohol, solvents or
ammonia-based liquids.
• Consult a service technician if the monitor does not operate normally when you have
followed the instructions in this manual.
• Only qualified service personnel should open the casing cover.
• Keep the monitor out of direct sunlight and away from stoves or any other heat source.
• Remove any object that could fall into the vents or prevent proper cooling of the monitor’s
electronics. Do not block the ventilation holes on the cabinet.
• Keep the monitor dry. To avoid electric shock, do not expose it to rain or excessive
moisture.
• If turning off the monitor by detaching power cable or DC power cord, wait for 6 seconds
before attach the power cable or DC power cord for normal operation.
• To avoid the risk of shock or permanent damage to the set do not expose the monitor to
rain or excessive moisture.
• When positioning the monitor, make sure the power plug and outlet are easily accessible.
• IMPORTANT: Always activate a screen saver program during your application. If a still image
in high contrast remains on the screen for an extended period of time, it may leave an 'after-
image' or 'ghost image' on the front of the screen. This is a well-known phenomenon that is
caused by the shortcomings inherent in the LCD technology. In most cases the after-image
will disappear gradually over a period of time after the power has been switched off. Be
aware that the after-image symptom cannot be repaired and is not covered under warranty.
Consult a service technician if the monitor does not operate normally when the operating
instructions given in this manual have been followed.
