Sony TRINITRON KV-PF21DK7 - Page 20

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KV-PF21N70/PF51P40/PF21P70/PF21Q40
RM-915 RM-952 RM-952 RM-952
KV-PF21Q70/PF21M70/PF21DK7
RM-952 RM-952 RM-952
20
Additional Information
Lines moving across the
TV screen.
The u
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.
Troubleshooting (continued)
Possible causeSymptom
Solutions
• Use the fine tuning (FINE) function.
(page 10)
• Contact your nearest Sony service
center. (page 17)
—
—
• 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.
24
Additional Information
“100” appears on the top
of the screen and there is
no Teletext display.
(not used this models)
Teletext display is
incomplete
(snowy picture or double
images).
(not used this models)
Lines moving across the
TV screen.
The
u 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.
Possible causeSymptom
Solutions
––
• Check the antenna cable and connection
on the TV, VCR, and at the wall. (page 4)
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Try using a booster.
• Use the fine tuning (FINE) function.
(page 10)
• Use the fine tuning (FINE) function.
(page 10)
• Contact your nearest Sony service
center. (page 19)
—
—
• The channel carries no
Teletext broadcast.
• Connection is loose or the
cable is damaged.
• The antenna direction is
inappropriate.
• Signal transmission is too
low.
• 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.
Troubleshooting (continued) (KV-PF51P40)