Troubleshooting - Panasonic PT-40LC12-K Operating Instructions Manual

Troubleshooting

Before you call for service, determine the symptoms and make a few simple checks as shown
below.
Symptoms
Power does not turn ON
Lamp does not light up.
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.
Remote control does not function
Image shakes
Image is not clear
Color patches or no color
Image appears doubled or tripled.
Images disappear at the top and bottom of
the screen
During ZOOM modes, the image is cut off
at the top and bottom.
The projection display set makes a high
whistling sound when the power is ON.
Some parts of the screen are always lit
while others do not light up.
Some parts of the screen do not light up.
Fan is operating even though TV Power
is OFF.
An OSD instructing to clean the filter is
displayed.
An OSD instructing to replace the lamp is
displayed. (The LAMP indicator is lit red.)
Relighting the lamp when it is hot makes
a sound.
Leaving stationary images, such as still
video images, web pages, or filler bars
(used for NORMAL aspect mode), on-
screen for an extended period of time
can leave ghost images on the screen.
72
Checks
• Is the power plug plugged in?
• 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 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.
• Are the batteries dead or inserted incorrectly?
• 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?
• Is the antenna or antenna cable old, broken or shorted?
• Is the antenna cable connected properly?
• When using a VCR and selecting channels on the TV, is the
TV/VIDEO mode for the VCR set to TV?
• Is the antenna facing the right direction?
• Is the antenna receiving any signals reflected off of mountains or
buildings.
• When using 16:9 image software, there is no picture at the top and
bottom of the screen (cinema vision size software, etc.).
• Has the screen position been changed?
If so, adjust screen positioning.
• This is the sound of the internal starting UP. This is not a
malfunction.
• This is a characteristic of the LCD panel and not a malfunction.
• This is because the cooling fan is operating. The fan will stop
after about 1 minute.
• After cleaning the filter, select YES.
• Replace lamp with a new one.
• This is a characteristic of the lamp and not a malfunction.
• This is a characteristic of the LCD panel and not a malfunction. Try
displaying constantly moving pictures which fill the entire screen, or
turn the power OFF for a while to return the screen to normal.
Page
21
-
64
-
-
62
-
7
-
65
-
12-14
-
-
-
-
30,31,40,41
-
-
21
62
64
-
-