Philips BDL4221V/00, Service Manual

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16 420WN6 LCD TV
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Trouble Shooting
Geometric Distortion Screen not
centered correctly
*Perform the LCD Monitor TV reset on "Position Settings Only"
*Auto adjust image through Menu -> Image Setting -> Auto
Adjust
*Adjust the centering controls
*Ensure the LCD Monitor TV is in proper video mode
Note: When operating in DVI mode, the
positioning
adjustments are not available.
Horizontal/Vertical
Lines
Screen has one or
more lines
*Perform the LCD Monitor TV reset
*Auto adjust image through Menu -> Image Setting -> Auto
Adjust
*Adjust Phase and Clock controls via OSD
*Check for bent or broken pins in the video cable connector
Note: When operating in DVI mode, the Pixel
Clock and Phase
adjustments are not available.
Sync Problems Screen is
scrambled or
appears torn
*Perform the LCD Monitor TV reset
* Push Auto Adjust button
* Adjust Phase and Clock controls via OSD
* Check for bent or broken pins
* Boot up in the "safe mode"
LCD Scratched Screen has scratches
or
smudges
*Turn the LCD Monitor TV off and clean the screen
Safety Related
Issues
Visible signs of
smoke or sparks
*Do not perform any troubleshooting steps
*The LCD Monitor TV needs to be replaced
Intermittent Problems The LCD Monitor
TV malfunctions
on & off
*Ensure the LCD Monitor TV is in proper video mode
* Ensure video cable connection between computer and the
LCD monitor TV is secured
*Perform the LCD Monitor TV factory reset (via Menu ->
Factory Reset -> All Settings)
* Perform the LCD Monitor TV self-test feature check to
determine if the intermittent problem occurs in self-test mode
TV and Audio Problems
Poor TV signal
reception
Abnormal picture
seen from the
screen
*The proximity of mountains or high buildings may be
responsible for ghost pictures, echoing or shadows. In this
case, try manually adjusting your pictures: see 'fine tuning' or
adjust the direction of the outside aerial.