KV-XF21M80 - Sony TV Service Manual (repair manual). Page 16

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KV
-XF21M80
RM-952
19
Additional Information
ONE-PUSH  AUTOMATIC  PROGRAMING
Additional Information
Self-diagnosis
function
Your TV is equipped with a self-diagnosis function. If there is a
problem with your TV, the u indicator flashes red. The number of
times the u indicator flashes indicates the possible causes.
1
Check that the red flashes of the u indicator are about 3 seconds per
interval.
2
Count the number of times the u indicator flashes.
3
Press U (main power) to turn off your TV.
4
Inform your nearest Sony service center about the number of times the
u
 indicator flashes.
Be sure to note the model name and serial number located on the rear of
your TV.
Front of TV
20
Additional Information
Snowy picture
Noisy sound
Distorted picture
Noisy sound
Good picture
Noisy sound
No picture
No sound
Troubleshooting
If you find any problem while viewing your TV, please check the following guide. If
any problem persists, contact your Sony dealer .
Possible cause
Symptom
Solutions
• Check the antenna cable and connection
on the TV, VCR and on the wall. (page 4)
• Press SELECT until “MANUAL
PROGRAM” appears on the screen then
preset the channel again. (page 9)
• Check the antenna type (VHF/UHF).
Contact a Sony dealer for advice.
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Try using a booster.
• Turn off or disconnect the booster if it is
in use.
• If the sound of all the channels are
noisy, select the appropriate TV system
then press AUTO PROGR to preset the
channels again. (page 8)
• If the sound of some channels are noisy,
select the channel, select the appropriate
TV system. (page 9)
• Check the power cord, antenna and the
VCR connections.
• Press u (power).
• Press U (main power) on the TV to turn
off the TV about five seconds, then turn
it on again.
• Connection is loose or the
cable is damaged.
• Channel presetting is
inappropriate or
incomplete.
• The antenna type is
inappropriate.
• The antenna direction is
inappropriate.
• Signal transmission is low.
• Broadcast signals are too
strong.
• The TV system setting is
inappropriate.
• The power cord, antenna
or VCR is not connected.
• The TV is not turned on.
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