Sony KV-PF21M70 Service Manual page 41

Symptom
Good picture
• Press ¸ + to increase the volume level.
• Press ¤ to cancel the muting.
No sound
• Do not use a hair dryer or other
Dotted lines or stripes
• Adjust the antenna direction for
• Use a highly directional antenna.
Double images or
• Use the fine tuning (FINE) function.
"ghosts"
• Adjust the antenna direction. Contact a
• Turn off or disconnect the booster if it is
• Press SELECT until "COLOR" appears
o
N color
• Press SELECT until "COL SYS " appears
• Adjust the antenna direction. Contact a
• Keep external speakers or other
Abnormal color patches
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Solutions Possible cause
• The volume level is too low.
• The sound is muted.
• There is local interference
equipment near the TV. from cars, neon signs, hair
dryers, power generators,
etc.
minimum interference. Contact a Sony
dealer for advice.
• Broadcast signals are
reflected by nearby
(page 10) mountains or buildings.
• The antenna direction is
Sony dealer for advice. inappropriate.
• Use of a booster is
inappropriate.
in use.
• The color level setting is
on the screen, then press + or – to adjust too low.
the color level. (page 15)
• The color system setting is
on the screen, then check the color inappropriate.
system setting (usually set this to
"AUTO"). (page 10).
• The antenna direction is
Sony dealer for advice.
inapproriate.
• The magnetic disturbance
electrical equipment away from the TV. from external speakers or
Do not move the TV while the TV is other equipment, or the
turned on. Press U (main power) on direction of the earth's
the TV to turn off the TV for about five magnetic field may affect
minutes, then turn it on again. the TV.
Additional Information
Troubleshooting (continued)
Symptom
"100" appears on the top
of the screen and there is
no Teletext display.
Teletext display is
incomplete
(snowy picture or double
images).
Picture slant
Lines moving across the
TV screen.
u
The indicator on your
TV flashes red a number
of times between
3-second intervals.
TV cabinet creaks.
A "boom" sound is heard
when the TV is turned on.
continued
21 22
Additional Information
Solutions Possible cause
• The channel carries no
Teletext broadcast.
––
• Connection is loose or the
• Check the antenna cable and connection
cable is damaged.
on the TV, VCR, and at the wall. (page 4)
• The antenna direction is
• Adjust the antenna direction. Contact a
inappropriate.
Sony dealer for advice.
• Signal transmission is too
• Try using a booster.
low.
• Use the fine tuning (FINE) function. (page 10)
• Press SELECT until "PIC ROTATION" • The terrestrial magnetism
appears on the screen, then press + or –
affects your TV set.
to align the picture to the TV screen.
(page 12)
• Use the fine tuning (FINE) function.
• There is interference from
(page 10)
external sources, e.g.,
heavy machineries, nearby
broadcast station.
• Contact your nearest Sony service
• Your TV may need service.
center. (page 19)
• Changes in room
temperature sometimes
make the TV cabinet
— expand or contract,
making a noise. This does
not indicate a malfunction.
• The TV's demagnetizing
function is working. This
—
does not indicate a
malfunction.