Sony TRINITRON KV-PF21M70 Service Manual page 16

Symptom Solutions
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
equipment near the TV.
• Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
Double images or • Use a highly directional antenna.
"ghosts"
• Use the fine tuning (FINE) function.
(page 10)
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
o
N color • Press SELECT until "COLOR" appears
on the screen, then press + or – to adjust
the color level. (page 15)
• Press SELECT until "COL SYS " appears
on the screen, then check the color
system setting (usually set this to
"AUTO"). (page 9).
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Keep external speakers or other
Abnormal color patches
electrical equipment away from the TV.
Do not move the TV while the TV is
turned on. Press U (main power) on
the TV to turn off the TV for about five
minutes, then turn it on again.
Troubleshooting (continued)
Possible cause
• The volume level is too low.
• The sound is muted.
Lines moving across the
TV screen.
The
TV flashes red a number
of times between
3-second intervals.
• There is local interference
TV cabinet creaks.
from cars, neon signs, hair
dryers, power generators,
etc.
• Broadcast signals are
A "boom" sound is heard
reflected by nearby
when the TV is turned on.
mountains or buildings.
• The antenna direction is
inappropriate.
• Use of a booster is
inappropriate.
• The color level setting is
too low.
• The color system setting is
inappropriate.
• The antenna direction is
inappropriate.
• The magnetic disturbance
from external speakers or
other equipment, or the
direction of the earth's
magnetic field may affect
the TV.
continued
19 20
Additional Information Additional Information
Symptom Solutions
• Use the fine tuning (FINE) function.
(page 10)
• Contact your nearest Sony service
u
indicator on your
center. (page 17)
—
—
Possible cause
• There is interference from
external sources, e.g.,
heavy machineries, nearby
broadcast station.
• Your TV may need service.
• 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.