Panasonic TX-15TA1C, Operating Instructions Manual

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When connected to a computer (PC)
TROUBLE SHOOTING continued
Symptom Check
See pages
An afterimage remains on the
screen.
• If a picture is displayed too long on a LC-display, this
causes temporary burn-in. Turn off the power supply and
let the unit rest for about one day.
–
The display colors are not
correct.
• Connect the signal cable correctly. 30
Size or position of screen not
changing.
• Check the video output mode of the computer and select
a mode within the operational range of the monitor. (For
details, refer to the instruction manual of the computer.)
–
Characters jittering even
after adjustment.
• If screen resolution is XGA (1024
×
768), set the clock
PHASE so that characters are displayed without
flickering.
• Lower the vertical frequency of the video signal and move
the clock frequency into the predetermined range (80
MHz). (For details, refer to the instruction manual of the
computer.)
39
–
Picture too dark.
• Check the video level from the computer and set the
monitor video level accordingly.
• Adjust backlight, contrast, and brightness.
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36
Harsh character contours.
• Set sharpness (picture quality) to mode 1. 37
• Press only one button at a time.
Button operation not possible.
–
No sound, or sound distorted.
• Connect the audio cable correctly.
• Increase volume using the VOL buttons (+, -).
• Deactivate muting by pressing MUTE.
• Control the volume at the computer. (For details, refer to
the instruction manual of the computer.)
30
33
33
–
Picture brightness changes
when menu is displayed.
• This effect is due to the artificial LC-display intelligence
and does not represent a malfunction.
Please check the setting for artificial LC-display
intelligence.
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