Troubleshooting - Panasonic PT-40LC12 Operating Instructions Manual

I Troubleshooting
Before you call for service, determine the symptoms and make a few simple checks as shown
below.
Symptoms Checks Page
Power does not turn ON • Is the power plug plugged in? 21
Lamp does not light up. • If the Lamp will not light after turning on the power 2 or 3 times, the
Lamp may be damaged. Please consult your nearest dealer.
The power turns OFF
The POWER indicator flashes orange
twice every 5 seconds.
The TEMP indicator flashes 2 or 4
times every 5 seconds.
The TEMP indicator flashes 5 times
every 5 seconds.
Power turns off while another indicator
is flashing.
• The lamp cover is ajar. Firmly replace the cover.
• Check whether or not the vents are clogged.
• Is the set being used in a location that is hot?
• Please clean the Air Filter.
• Please consult your nearest dealer.
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58
Remote control does not function • Are the batteries dead or inserted incorrectly? 7
• Is the remote control sensor in direct light of fluorescent lamps or
other strong sources of light?
• Did you correctly set the remote control code? 61
Image shakes • Is the antenna or antenna cable old, broken or shorted?
Image is not clear • Is the antenna cable connected properly? 12-14
Color patches or no color • When using a VCR and selecting channels on the TV, is the
TV/VIDEO mode for the VCR set to TV?
Image appears doubled or tripled. • Is the antenna facing the right direction?
• Is the antenna receiving any signals reflected off of mountains or
buildings.
Images disappear at the top and bottom of • When using 16:9 image software, there is no picture at the top and
the screen bottom of the screen (cinema vision size software, etc.).
During ZOOM modes, the image is cut off • Has the screen position been changed?
at the top and bottom. If so, adjust screen positioning. 30,31,40,41
The projection display set makes a high • This is the sound of the internal starting UP. This is not a
whistling sound when the power is ON. malfunction.
Some parts of the screen are always lit • This is a characteristic of the LCD panel and not a malfunction.
while others do not light up.
Some parts of the screen do not light up.
Fan is operating even though TV Power • This is because the cooling fan is operating. The fan will stop
is OFF. after about 1 minute. 21
An OSD instructing to clean the filter is • After cleaning the filter, select YES.
displayed. 58
An OSD instructing to replace the lamp is • Replace lamp with a new one.
displayed. (The LAMP indicator is lit red.) 60
Relighting the lamp when it is hot makes • This is a characteristic of the lamp and not a malfunction.
a sound.
Leaving stationary images, such as still • This is a characteristic of the LCD panel and not a malfunction. Try
video images, web pages, or filler bars displaying constantly moving pictures which fill the entire screen, or
(used for NORMAL aspect mode), on- turn the power OFF for a while to return the screen to normal.
screen for an extended period of time
can leave ghost images on the screen.
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