Panasonic TH-84LQ70 Operating Instructions - Page 79

Troubleshooting

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Troubleshooting Before you call for service, determine the symptoms and make a few simple checks as shown below. Symptoms Picture Interference Sound Noisy Sound Electrical Appliances Cars / Motorcycles Fluorescent light Check Normal Picture No Picture No Picture No Sound Volume (Check whether the mute function has been activated on the remote control.) No Sound 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, Normal Sound or frequency is input, only the input terminal indication is displayed. No Colour Colour controls set at minimum level (see page 37, 38) Normal Sound 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. 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 60) Check whether [Controller ID function] in [Options] menu is set to [On]. (see page 60) Check whether switch is set to . (see page 73) Check whether [Controller ID function] is set to [On], or switch is set to . (see page 60) (When [Controller ID function] is set to [On], you need to set switch to and set the ID number.) Adjust the position of the picture on the screen. (see page 34, 35) 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 30) 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. English 79

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79
English
Troubleshooting
Before you call for service, determine the symptoms and make a few simple checks as shown below.
Symptoms
Check
Picture
Sound
Electrical Appliances
Cars / Motorcycles
Fluorescent light
Interference
Noisy Sound
Normal
Picture
No Sound
Volume
(Check whether the mute function has been activated on the
remote control.)
No Picture
No Sound
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.)
No Picture
Normal Sound
If a signal with a non-applicable colour system format,
or frequency is input, only the input terminal indication is
displayed.
No Colour
Normal Sound
Colour controls set at minimum level (see page 37, 38)
No remote control operations can be performed.
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 60)
Check whether [Controller ID function] in [Options] menu is
set to [On]. (see page 60)
Check whether <ID MODE> switch is set to <ON>. (see
page 73)
[Controller ID function] function cannot be used.
Check whether [Controller ID function] is set to [On], or <ID
MODE> switch is set to <ON>. (see page 60)
(When [Controller ID function] is set to [On], you need to set
<ID MODE> switch to <ON> and set the ID number.)
The top or bottom of the picture on the screen is
cut off.
Adjust the position of the picture on the screen.
(see page 34, 35)
There are areas at the top and bottom of the
screen where picture is not displayed.
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 30)
Parts of the unit become hot.
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.