Panasonic TH-37PWD4 Operating Instructions Manual page 40

I Troubleshooting
I Before call for determine the and make few checks shown below
you service, symptoms
a
slmp|e
as
Symptoms
Picture
Interface
Normal Picture
No Picture
No Picture
No Color
Sound
\
Noisy Sound
No Sound
No Sound
\
Normal Sound
J
Normal Sound
Checks
Electrical Appliances
Cars/Motorcycles
Fluorescent light
Volume
(Check whether the mute function has been
activated on the resole control )
Not plugged into AC outlet
Not swilched on
PICTURE and BIGHTNESSNolume setting
(Check by pushing the power switch or
stand-by button on the remote control )
If a signal with a non-applicable color system
formal, or frequency is input, only the =npul
terminal indication ks displayed
Color controls set st minimum level
Color system (see page 2B, 29)
Plasma Display panel
Symptoms Check
The plasma display panel ksmanufactured using an extremely high level of precision
Some parts of the screen do not technology, however, sometimes some parfs of the screen may be missing picture
light up elements or have luminous spots This is not a malfunction
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After-images appear
Do not allow a stdl ptcture to be displayed for an extended period, as this can
cause a permanent sfter-lrnage to rematn on the Plasma Display
Examples of slill pictures include loges, vLdeo games, computer images, teletext
and tmages dtsplayed in 4 3 mode
Note:
The permanent after4mage on the Plasma Dtsplay resulhng from fixed image use
IS not an operatmg defect and as such is not covered by the Warranty
This product is not designed to display fixed images Ior extended penods el time
Whtrring sounds can be heard The display unitis httedwith a coohng fan to dmsipateheat generated dunngnormal use
from the display unit The whlrnng sound is caused by rotellon of the fan and ts not a maliuncbon
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