Ask Proxima Impact 400 - Manual (Page 18)

USER GUIDE LCD PANEL
17
8 PRACTICAL HINTS AND TIPS
This is a list of what to do when things go wrong. Check the symptoms
carefully if you experience any problem. The cure may be at your hands!
Always press the RESET key and observe that the LED on the
LCD panel is flashing. This indicates that the LCD panel receives
signals from the remote control..
The LCD image is completely black
- Check the BLACK switch
- Check the CONTRAST and BRIGHTNESS settings
- Check if the cables are connected and that power is on
(LED on front panel)
- Check the ON/OFF key on the remote control
The LCD image is too dark or too light
- Check the CONTRAST and BRIGHTNESS settings
- Try the RESET key
Some colors are unstable or flickering
- Try to adjust the CONTRAST, BRIGHTNESS or possibly TUNE
The whole LCD image appears unstable or misplaced
- Try to adjust the FREQUENCY, TUNE or POSITION
- Check that you run a resolution/refresh rate within specifications
- Alternatively, you are most probably connected to a
non-standard computer or video card. See the Features section
for frequency adjustment and positioning
The cooling fan is not working
- The fan operation is controlled by the overhead projector light
Is the OHP turned on?
- Is the panel positioned so that the housing footprint fits the OHP
glass exactly?
- Check that the panel power supply is attached
- Try to unplug the power cord and replug it again
- Do not use the LCD if the fan appears defective, as overheating
may occur