Sony KV-XA25P52A Service Manual ▷ View online
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KV
-XA25P52A
-XA25P52A
RM-952
22
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 .
any problem persists, contact your Sony dealer .
Possible cause
Symptom
Solutions
• Connection is loose or
the cable is damaged.
• Channel presetting is
inappropriate or
incomplete.
incomplete.
• The antenna type is
inappropriate.
• The antenna direction
is inappropriate.
• Signal transmission is
low.
• Broadcast signals are
too strong.
• The selected sound is
inappropriate.
• The power cord,
antenna or VCR is not
connected.
connected.
• The TV is not turned
on.
4
10
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20
4
12
12
Page
• Check the antenna cable and connection
on the TV, VCR and on the wall.
• Press SELECT until “MANUAL
PROGRAM” appears on the screen, then
preset the channel again.
preset the channel again.
• 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 some channels are noisy,
select the channels, then press A/B to
select the main sound.
select the main sound.
• Check the power cord, antenna and the
VCR connections.
• Press ?/1 (power).
• Press ! (main power) on the TV to turn
off the TV for about five seconds, then
turn it on again.
turn it on again.
Additional Information
23
Possible cause
Symptom
Solutions
Good picture
No sound
Dotted lines or
stripes
Double images or
“ghosts”
No color
Abnormal color
patches
Page
• The volume level is
too low.
• The sound is muted.
• There is local
interference from cars,
neon signs, hair
dryers, power
generators, etc.
neon signs, hair
dryers, power
generators, etc.
• Broadcast signals are
reflected by nearby
mountains or
buildings.
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.
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.
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
• Press 2 + to increase the volume level.
• Press % to cancel the muting.
• Do not use a hair dryer or other
equipment near the TV.
• Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
dealer for advice.
• Use a highly directional antenna.
• Use the fine tuning (FINE) function.
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
• Press SELECT until “COLOR” appears
on the screen, then press + or – to adjust
the color level.
the color level.
• Press SELECT until “COLOR SYS ”
appears on the screen, then check the
color system setting (usually set this to
“AUTO”).
color system setting (usually set this to
“AUTO”).
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Keep external speakers or other electrical
equipment away from the TV. Do not
move the TV while the TV is turned on.
Press ! (main power) on the TV to turn
off the TV for about 15 minutes, then turn
it on again.
move the TV while the TV is turned on.
Press ! (main power) on the TV to turn
off the TV for about 15 minutes, then turn
it on again.
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16
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continued
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KV
-XA25P52A
-XA25P52A
RM-952
24
Additional Information
Possible cause
Symptom
Solutions
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11
21
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Page
• The magnetic
disturbance from
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
• There is interference
from external sources,
e.g., heavy
machineries, nearby
broadcast station.
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.
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.
function is working.
This does not indicate
a malfunction.
• Keep external speakers or other electrical
equipment away from the TV.
• Press SELECT until “PIC ROTATION”
appears on the screen, then press + or –
to adjust the picture position until it is
optimal.
to adjust the picture position until it is
optimal.
• Use the fine tuning (FINE) function.
• Contact your nearest Sony service center.
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Picture slant
Lines moving across
the TV screen.
The
1
indicator on
your TV flashes red
several times
between three
second intervals.
TV cabinet creaks.
A “boom” sound is
heard when the TV
is turned on.
Good m
orning!
Troubleshooting (continued)
Additional Information
25
Overview of controls
TV front panel
L (MONO)
R
2
PROGR
SELECT
AUTO
PROGR
PROGR
MENU
AUTO
PROGR
PROGR
L(MONO)
2
Page
Function
Button
Preset channels automatically.
5
Select the desired item.
11
Select program number.
12
Turn off completely or turn on the TV.
12
Adjust volume.
12
Standby indicator.
12
Select TV or video input.
13
Wake Up indicator.
14
Headphone jack.
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AUTO PROGR
SELECT
PROGR +/–
!
SELECT
PROGR +/–
!
2
+/–
1
t
i
continued
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KV
-XA25P52A
-XA25P52A
RM-952
26
Additional Information
Remote Control
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
The names/symbols of
buttons on the remote are
indicated in different colors to
represent the available
functions.
buttons on the remote are
indicated in different colors to
represent the available
functions.
Label color
White
Green
Button function
For general TV
operations
operations
For Teletext
operations
operations
Page
Button
Function
SELECT
+/–
PROGR +/–
0 – 9, -/--
+/–
PROGR +/–
0 – 9, -/--
2
+/–
?
/1
t
a
%
JUMP
Timer operations
PIC MODE
SOUND MODE
FAVORITE
Bilingual operations
FAVORITE
Bilingual operations
A/B
Teletext operations
x
(red, green,
yellow, blue)
10
10
12
12
12
12
10
12
12
12
12
13
13
13
13
13
13
13
13
13
14
14
15
15
18
14
15
15
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20
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Select the desired item.
Adjust value.
Select program number.
Input numbers.
Adjust volume.
Turn off temporarily or turn on
the TV.
Select TV or video input.
Display the TV program.
Mute the sound.
Display on-screen information.
Jump to previous program
number.
Adjust value.
Select program number.
Input numbers.
Adjust volume.
Turn off temporarily or turn on
the TV.
Select TV or video input.
Display the TV program.
Mute the sound.
Display on-screen information.
Jump to previous program
number.
Set TV to turn on automatically.
Set TV to turn off automatically.
Select picture mode.
Select sound mode.
Display favorite channels.
Set TV to turn off automatically.
Select picture mode.
Select sound mode.
Display favorite channels.
Select bilingual mode.
Not function for your TV.
Overview of controls (continued)
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KV
-XA25P52A
-XA25P52A
RM-952
2-5-2. REPLACEMENT OF LIGHT GUIDE
2-5. REPLACEMENT OF PARTS
For replacement of the Multi Button and Light Guide,
unscrew them, exchange with the new parts, and fix them
with screws (+BVTP) respectively.
unscrew them, exchange with the new parts, and fix them
with screws (+BVTP) respectively.
2-5-1. REPLACEMENT OF MULTI BUTTON
One screw
(+BVTP 3
(+BVTP 3
× 12)
1 Push the claw to direction
of arrow and remove
of arrow and remove
2 Spring compression
3 Power Button
SECTION 2
DISASSEMBLY
2-2. SPEAKER REMOVAL
2-1. REAR COVER REMOVAL
1 Two screws
(+BVTP 4 x16)
(+BVTP 4 x16)
2 Two screws washer head
(+P4 x16)
(+P4 x16)
2-4. SERVICE POSITION
2-3. CHASSIS ASSY REMOVAL
2 Three screws
(+BVTP 4
(+BVTP 4
× 16)
1 Eight screws
(+BVTP 4
(+BVTP 4
× 16)
3 Rear Cover
Note:
Undress necessary wires that creates tension
while placing the chassis into Service Position.
while placing the chassis into Service Position.
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