Polaroid V23D series Service Manual page 23

CODE SYMPTOM
Stripe noise.
PP5
No color, too light or too
PP6
dark
Poor picture on particular
PP7
channel.
Good picture, no sound
NS1
NS2 Noisy noise
PC1 PC display is Not Full
Screen
PC2 Horizontal Noise or Color
pattern is not uniform
PC3 "Out of Range" message
PC4 No Sound
PC5 After "No Signal " has
appeared on PC mode for
a while, the view
disappears and the LED
Indicator turns from
Green to"Amber" .
COUNTERMEASURES
Check the coaxial cable connected with the TV is not
oxidized
Do not use 300 ohm twin lead cables as interference
may occur
It is recommended to use a 75 ohm coaxial cable
(not supplied) to get premium quality picture.
Keep the aerial cable away from other connecting
cables.
Adjust the picture settings — APC, Brightness,
Contrast, Saturation , Color Temp.
Press RESET button on remote control to return all
settings to factory settings.
Use "Fine Tune" in OSD to manually adjust a
particular channel for optimal reception.
Make sure the headphone is not connected. (option)
Check audio connections between Equipment &
LCD-TV.
Press MUTE or VOL Up to cancel the muting.
Make sure that the antenna connected is 75 ohm
coaxial cable (not supplied) , not 300 ohm twin lead
cables .
Keep the antenna cable away from other connecting
cables.
Press MTS button to select "Mono" which will
reduce the noise.
Adjust BASS or TREBLE properly on remote
control.
Select "Auto Image" in OSD menu to optimize the
image .
If executing Auto Image Adjust still can not achieve
full screen display, adjust "V. Position" and "H.
Position" in PC mode
Select "Auto Image" in OSD menu to optimize the
image .
If still no good , adjust "Phase" in OSD menu
Maximum PC resolution supported is 1280x768
, so the screen will appear "Out of range" at higher
resolution.
Reduce the resolution to1280x768 from the PC.
Note
20〞panel resolution is 640 x 480.
Make sure PC audio Input is well connected.
Press any key on keyboard or move the mouse to
activate the PC , because the PC may go to power
saving status.
Check if the D-sub or DVI connector (Cable) is
disconnected or loose.
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