Troubleshooting - Panasonic TH-98LQ70U Operating Instructions Manual

Troubleshooting

Before you call for service, determine the symptoms and make a few simple checks as shown below.
Picture
Interference
Normal
Picture
No Picture
No Picture
No Colour
No remote control operations can be performed.
[Controller ID function] function cannot be used.
The top or bottom of the picture on the screen is
cut off.
There are areas at the top and bottom of the
screen where picture is not displayed.
Parts of the unit become hot.
76
English
Symptoms
Sound
Noisy Sound
No Sound
No Sound
Normal Sound
Normal Sound
Electrical Appliances
Cars / Motorcycles
Fluorescent light
Volume
(Check whether the mute function has been activated on the
remote control.)
Not plugged into AC outlet
Not switched on
Picture and Brightness/Volume setting
(Check by pressing the power switch or stand-by button on
the remote control.)
If a signal with a non-applicable colour system format,
or frequency is input, only the input terminal indication is
displayed.
Colour controls set at minimum level (see page 36, 37)
Check whether the batteries have discharged completely
and, if they have not, whether they were inserted properly.
Check whether the remote control sensor is exposed to an
outdoor light or a strong fluorescent light.
Check whether the remote control designed specifically
for use with the unit is being used. (The unit cannot be
operated by any other remote control.)
Check whether the option other than [Off] is selected in
[Controller user level] in the [Options] menu. (see page 59)
Check whether [Controller ID function] in [Options] menu is
set to [On]. (see page 59)
Check whether <ID MODE> switch is set to <ON>. (see
page 70)
Check whether [Controller ID function] is set to [On], or <ID
MODE> switch is set to <ON>. (see page 59)
(When [Controller ID function] is set to [On], you need to set
<ID MODE> switch to <ON> and set the ID number.)
Adjust the position of the picture on the screen.
(see page 33, 34)
When using a video software program (such as a cinema
size program) with a screen wider than one in the 16:9
mode, blank areas separate from the images are formed at
the top and bottom of the screen.
(see page 29)
Even when the temperature of parts of the front, top and
rear panels has risen, these temperature rises will not pose
any problems in terms of performance or quality.
Check