Sony KV-XA25P52A Service Manual
REVISION HISTORY
BG3R
CHASSIS
MODEL
KV-XA25P52A
NO. SUFFIX DATE SUPP / CORR DESCRIPTION
1 -01 2002/7 -- 1st. Issue
PA RT NO. : 9-872-324-01
SERVICE MANUAL
BG3R
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.
KV-XA25P52A
RM-952 Thailand SCC-U49S-A
MODEL COMMANDER DEST. CHASSIS NO.
3
1
2
6
4
5
9
7
8
JUMP
-/--
0
SOUND
PROGR
MODE
FAVORITE
TV
TRINITRON
®
COLOR TV
KV-XA25P52A
RM-952
Power requirements 220-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G
Color system PAL, PAL 60, NTSC3.58 (AV IN), NTSC4.43
Stereo/Bilingual System A2 Bilingual B/G
Channel coverage
˘ (Antenna) 75-ohm external terminal
Audio output (Speaker) 5W + 5W
Number of terminal
D Video Input: 3* Output: 1 Phono jacks; 1 VP-P, 75 ohms *Two input lines available
≥ Audio Input: 3* Output: 1 Phono jacks; 500 mVrms *Two input lines available
(Component Video)
2 (Headphone) Output: 1 Stereo minijack
Picture tube 25 in.
Tube size (cm) 64 Measured diagonally
Screen size (cm) 60 Measured diagonally
Dimension (w/h/d, mm) 696 × 513 × 499
Mass (kg) 36
SPECIFICATIONS
VHF: E2 to E12
UHF: E21 to E69
CATV: S01 to S03, S1 to S41
Input: 1 Phono jacks;
Y: 1 Vp-p, 75 ohms,
sync negative
B : 0.7 Vp-p, 75 ohms
C
R : 0.7 Vp-p, 75 ohms
C
Audio : 500 mVrms
Note
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD,
OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
TABLE OF CONTENTS
KV-XA25P52A
RM-952
Section Title Page
SELF DIAGNOSTIC FUNCTION.............................. 4
1. GENERAL ................................................................. 7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 20
2-2. Speaker Removal .................................................... 20
2-3. Chassis Assy Removal ............................................ 20
2-4. Service Position ...................................................... 20
2-5. Replacement of Parts .............................................. 20
2-5-1. Replacement of Multi Button ...................... 20
2-5-2. Replacement of Light Guide ........................ 20
2-6. J1 Board and Terminal Bracket Removal ............... 21
2-7. H Board Removal.................................................... 21
2-8. A and B9 Boards Removal ..................................... 21
2-9. Picture Tube Removal ............................................. 22
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 23
3-2. Convergence ............................................................ 24
3-3. Focus Adjustment.................................................... 26
3-4. G2 (Screen) and White Balance Adjustments ........ 26
Section Title Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 35
5-2. Circuit Boards Location .......................................... 37
5-3. Schematic Diagrams ............................................... 38
(1) A Board Schematic Diagram ............................ 39
(2) B9 Board Schematic Diagram .......................... 43
(3) C6 Board Schematic Diagram .......................... 45
(4) H Board Schematic Diagram ............................ 47
(5) J1 Board Schematic Diagram ........................... 49
(6) VM1 Board Schematic Diagram....................... 50
5-4. Voltage Measurements ............................................ 51
5-5. Waveforms .............................................................. 54
5-6. Printed Wiring Boards and Parts Location ............. 55
5-7. Semiconductors ....................................................... 60
6. EXPLODED VIEWS
6-1. Picture Tube ............................................................ 62
6-2. Chassis..................................................................... 64
7. ELECTRICAL PARTS LIST.................................... 65
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 27
4-2. Adjustment Method ................................................ 27
4-3. Picture Quality Adjustment .................................... 32
4-4. Deflection Adjustment ............................................ 32
4-5. H-Trapezoid Adjustment......................................... 33
4-6. A Board Adjustment After IC003 (Memory)
Replacement ............................................................ 33
4-7. Picture Distortion Adjustment ................................ 34
– 3 –
KV-XA25P52A
RM-952
SELF DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will
automatically begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/
TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error
symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in
memory to reveal past problems and how often these problems occur.
1. DIAGNOSTIC TEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of
the problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a
“0”.
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
• White balance
failure (no
PICTURE)
• Micro reset
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
—
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F7601
(B9)
• H.OUT Q511 is shorted.
(A board)
• IC1800 is shorted.
(C6 board)
• -13V is not supplied.
(A board)
• IC 503 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• Video OUT is faulty.
(C6 board)
• IC301 is faulty. (A board)
• No connection A board to
C6 board.
• Discharge CRT (C6 Board)
• Static discharge
• External noise
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
– 4 –
KV-XA25P52A
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
Diagnostic Item Flash Count*
2 times
5 times
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF 3 sec.
3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER
lamp from flashing.
+B overcurrent/overvoltage 2 times
Vertical deflection stopped
White balance failure 5 times
* One flash count is not used for self-diagnostic.
STANDBY/SLEEP lamp
RM-952
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screendisplay] / channel [5] / Sound volume [-] / Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
SELF DIAGNOSTIC
002 : 000
003 : 000
004 : 000
005 : 001
101 : 000
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
– 5 –
KV-XA25P52A
RM-952
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic
screen during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after
completion of the repairs.
[Clearing the result display]
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the
diagnostic screen is being displayed.
Channel [8] / 0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIAGNOSTIC CIRCUIT
FROM
CRT
FROM
[+B] Q604 C6
[V] Q509/507
IC301
Y/CHROMA JUNGLE
IK-IN
MP/
18 51
PROTECT
SDA
4635
IC001
SYSTEM
IO-8DAT
O-LED
IO-SDAT
MEMORY
B-DAT
54521
IC003
[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to
ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than
seven verticals in a period, the unit will automatically turn off.
[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 and
IC001 shut down the power supply.
[Verticaldeflectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507. Power supply will
be shut down when detect this by IC001.
[Whitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error
will be detected by IC301. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
– 6 –
The operating instruction mentioned here are partial abstracts
2
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only between 220 – 240 V AC.
To prevent fire or shock hazard, do not expose
the TV to rain or moisture.
Do not operate the TV if any liquid or solid object
falls into it. Have it checked immediately by
qualified personnel only.
Do not open the cabinet and the rear cover of the
TV as high voltages and other hazards are
present inside the TV. Refer servicing and
disposal of the TV to qualified personnel.
Your TV is recommended for home use only.
Do not use the TV in any vehicle or where it may
be subject to excessive dust, heat, moisture or
vibrations.
Do not block the ventilation openings of the TV.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
For children’s safety, do not leave children alone
with the TV. Do not allow children to climb onto
it.
Do not plug in too many appliances to the same
power socket. Do not damage the power cord.
Clean the TV with a dry and soft cloth.
Do not use benzine, thinner, or any other chemicals
to clean the TV. Do not scratch the picture tube.
For your own safety, do not touch any part of the
TV, the power cord and the antenna cable during
lightning storms.
Do not place any objects on the TV.
3
Using Your New TV
Pull the power cord out by the plug. Do not pull
the power cord itself. Even if your TV is turned
off, it is still connected to the AC power source
(mains) as long as the power cord is plugged in.
Unplug the TV before moving it or if you are not
going to use it for several days.
Install the TV on a stable TV stand and floor
which can support the TV set weight. Ensure that
the TV stand surface is flat and its area is larger
than the bottom area of the TV.
WARNING (continued)
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remain as in the manual.
SECTION 1
GENERAL
– 7 –
KV-XA25P52A
RM-952
Using Your New TV
4
Getting Started
Step 1
Connect the antenna
If you wish to connect a VCR, see the Connecting a VCR diagram below.
Using Your New TV
IEC connector
(not supplied)
To video and
audio outputs
VCR
(yellow)
-L (MONO) (white)
-R (red)
Antenna cable (not supplied)
To antenna
output
Rear of TV
Rear of TV
Connecting a VCR
To watch the video input, press t (see page 13).
: Signal flow
12
R
L
Y
C
B
C
R
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
R L
To 8
(antenna
input)
To t 1 or 2
(video input)
or
Antenna cable (not supplied)
Antenna cable (not supplied)
CAUTION
• Do not plug in the power cord until you have completed making all other
connections; otherwise a minimum leakage current might flow through
the antenna and other terminals to ground.
• To avoid battery leakage and damage to the remote, remove the batteries
from the remote if you are not going to use it for several days. If any
liquid that leaks from the batteries touches you, immediately wash it
away with water.
Audio/Video cable
(not supplied)
: Signal flow
Using Your New TV
Using Your New TV
5
Step 3
Preset the channels automatically
Tips
• If you want to stop automatic channel presetting, press SELECT twice.
• If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 10).
Notes
• If you connect a monaural VCR, connect the yellow plug to
(the yellow
jack) and the black plug to
-L (MONO) (the white jack).
• If you connect a VCR to the 8 (antenna input) terminal, preset the signal
output from the VCR to the program number 0 on the TV.
• Do not connect video equipment to the t 2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
• When no signal is input from the connected video equipment, the TV
screen becomes blue.
Step 2
Note
• Do not use old batteries nor use different types of batteries together.
Insert the batteries
into the remote
P
ROGRMENU
AU
TO
PRO
GR
L(MO
NO)
2
1
2
1
1
VHF LOW B/G
Front of TV
KV-XA25P52A
RM-952
– 8 –
Using Your New TV
Using Your New TV
7
Notes
•
If your DVD player can output interlace and progressive mode signals, select
the interlace output when connecting to
(component video input) on your
TV. Your TV can receive either 525i/60Hz or 625i/50Hz interlace signals.
•
Some DVD player terminals may be labeled differently:
•
Since the high quality pictures on a DVD disc contain a lot of information,
picture noise may appear. In this case, adjust the sharpness (see Adjusting the
picture and sound settings on page 16).
Connecting a DVD player using the
(component
video input) jacks
1 Connect R and L under
(component video input) on your TV to the LINE OUT,
AUDIO R and L output connectors on your DVD player.
2 Connect Y, C
B
, and C
R
under
(component video input) on your TV to the
COMPONENT VIDEO OUT Y, C
B
, and C
R
output connectors on your DVD player.
DVD player
To
L (white)
R (red)
Audio cable
(not supplied)
To component
video output
Component video cable
(not supplied)
To audio
output
: Signal flow
To
(component
video input)
Connect To (on the DVD player)
Y (green) Y
C
B
(blue) C
b
, B-Y or P
B
C
R
(red) C
r
, R-Y or P
R
Rear of TV
Connecting a DVD player using the t (video input) jacks
DVD player
Audio/Video cable (not supplied)
(yellow)
-L (MONO) (white)
-R (red)
To t 1 or 2
(video input)
: Signal flow
Rear of TV
VIDEO
R-AUDIO-L
LINE OUT
12
L(MONO)
R
VIDEO
R-AUDIO-L
LINE OUT
Y
COMPONENT VIDEO OUT
S VIDEO OUT
CB C
R
R
L
Y
C
B
C
R
Using Your New TV
6
Connecting optional components
You can connect optional audio/video components, such as a VCR, multi disc player,
DVD, camcorder, video game or stereo system.
To watch the video input of the connected equipment, press t (see page 13).
Connecting a camcorder/video game equipment
using the t (video input) jacks
Notes
• You can also connect video equipment to the t 1 or 2 (video input) jacks
at the rear of your TV.
• Do not connect video equipment to the t 2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
Connecting audio/video equipment using the T
(monitor output) jacks
12
L(MONO)
R
R
L
Y
C
B
C
R
PROGRMENU
AUTO
PROGR
L(MONO)
2
L (MONO)
R
2
Front of TV
Camcorder
Video game
equipment
To video and
audio outputs
Rear of TV
To
antenna
output
To video and
audio inputs
Audio system
To
audio
inputs
VCR
: Signal flow
: Signal flow
To
t
2
(video input)
To T
(monitor
output)
or
Audio/Video cable (not supplied)
Antenna cable (not supplied)
Audio/Video cable
(not supplied)
or
(yellow)
-L (MONO)
(white)
-R (red)
Note
• If you select “DVD” on your TV scr
een, the signal from the T
(monitor output) jacks will not be output properly. This does not indicate
a malfunction (see page 13).
– 9 –
KV-XA25P52A
RM-952
Using Your New TV
Using Your New TV
9
Presetting
channels
You can preset up to 100 TV channels in
numerical sequence from program
number 1 using the remote and the
buttons on your TV as well.
Presetting channels automatically
1
Press ! to turn on the TV.
2
Press AUTO PROGR.
To preset channels automatically from a specified program number
(1) Press SELECT until
“AUT
O PROGRAM” appears.
(2) Press + or – to enter the “AUT
O PROGRAM” mode.
The on-screen display will start flashing.
(3) Press PROGR +/– or the number buttons until the desir
ed program number
appears.
(4) Press + or – to start presetting channels automatically.
TV
1
2
3
4
6
7
8
9
-/--
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
?/1
Number buttons
SELECT
2 +/–
PROGR +/–
+ or –
PIC MODE
VHF
LOW
B/G
L(MONO) R
2
PROGRMENU
AUTO
PROGR
AUTO
PROGR
continued
Using Your New TV
8
Securing the TV
To prevent the TV from falling, secure the TV using one of the following methods:
A
With the supplied screws, attach the band to the TV stand and to the rear of
the TV using the provided hole.
or
B
Put the cord or chain through the clamps to secure the TV against a wall or
pillar.
Note
• Use only the supplied screws. Use of other screws may damage the TV.
20
mm
A
B
3.8mm
or
– 10 –
KV-XA25P52A
RM-952
Using Your New TV
10
Presetting channels (continued)
Presetting channels manually
1
Press SELECT until
“MANUAL PROGRAM”
appears.
2
Press + or – to enter the
“MANUAL PROGRAM”
mode.
3
Press PROGR +/– or the
number buttons until the
desired program number
appears.
4
Press + or – until the
desired channel picture
appears.
5
Press SELECT to exit the
“MANUAL PROGRAM”
mode.
VHF
LOW
B/G
MANUAL PROGRAM
or
1
2
3
4
5
6
7
8
0
-/--
9
PROGR
SELECT
1
SELECT
Using Your New TV
Using Your New TV
11
To change the color system setting
If the color is abnormal when receiving programs through the
8
(antenna input)
terminal or the
t
(video input) jack
(1) Press SELECT until
“COLOR SYS” appears.
(2) Press + or – to select the appropriate
color system until the color is
optimal.
Tip
• Normally set “COLOR SYS” to “AUT
O”.
Skipping program numbers
1
Press PROGR +/
– or the number buttons until the unused or unwanted
program number appears.
2
Press SELECT until
“MANUAL PROGRAM
” appears.
3
Press + or – to enter the “MANUAL PROGRAM
” mode.
4
Press PIC MODE.
5
Press SELECT to exit the
“MANUAL PROGRAM
” mode.
Note
• To restore the skipped program number again, preset the channel
automatically or manually.
Tip
• You can also use SELECT and 2 +/– on the TV to preset channels and
skip program numbers.
To use the fine tuning (FINE) function
The fine tuning (FINE) function may help to reduce the following problems:
double images and lines moving across the TV screen.
You can use the fine tuning function as below:
(1) Select the program number you want to adjust.
(2) Press SELECT until
“MANUAL
PROGRAM” appears.
(3) Press + or – to enter the “MANUAL
PROGRAM” mode.
(4) Press
to display “FINE” on the scr
een.
(5) Press + or – continuously until the above problems are minimized.
The + or – icon on the screen flashes while tuning.
(6) Press SELECT to exit the
“MANUAL
PROGRAM” mode.
COLOR SYS: AUTO
AUTO
PAL
NTSC 3.58NTSC 4.43
– 11 –
KV-XA25P52A
RM-952
KV-XA25P52A
Using Your New TV
12
Watching the TV
This section explains functions used
while watching the TV. Most operations
can be done using the remote.
1
Press ! to turn on the TV.
When the TV is in the
standby mode (the 1
indicator on the TV is lit
red), press ?/1 on the
remote or PROGR +/
– on
the TV.
2
Press PROGR +/
– or the
number buttons to select
the program number.
For double digit numbers,
press -, then the number
(e.g., for 25, press -, then
2 and 5).
3
Press 2 +/– to adjust the
volume.
%
?/1
t
a
Number buttons
SELECT
2
+/–
PROGR +/–
+ or –
JUMP
or
PROGRMENU
AUTO
PROGR
L(MONO)
2
PROGRSELECT
AUTO
PROGR
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
1
indicator
1
2
3
4
5
6
7
8
0
-/--
9
PROGR
Using Your New TV
Using Your New TV
13
To
Turn off temporarily
Turn off completely
Mute the sound
Watch the video input
(VCR, camcorder, etc.)
Jump back to the previous program
number
Display the on-screen information*
Adjust the volume of all
program numbers automatically
Adjust the picture position when it
is not aligned to the TV screen
Press
?/1. The 1 indicator on the TV lights up red.
! on the TV.
%.
t to select “VIDEO 1” or “VIDEO 2” or DVD.
To return to the TV program, press a or t on the TV.
JUMP.
.
SELECT repeatedly until
“INTELLIGENT VOL
”
appears, then press + or – to select “ON”.
To cancel, select “OFF”.
SELECT repeatedly until
“PIC ROT
ATION” appears,
then press + or – to adjust the alignment of the picture
position.
The
or
icon on the screen flashes while
adjusting.
Additional tasks
PIC ROTATION
continued
* The picture, sound, and either the program number or video input are
displayed. The on-screen display for the picture and sound information
disappears after about three seconds.
Changing the on-screen display language
1
Press SELECT until
“LANGUAGE/
: ENGLISH”
appears on the screen.
2
Press + or – to select
“
“.
Tip
• You can also use SELECT and 2 +/– on the TV to select the on-screen
display language.
SELECT
LANGUAGE /
: ENGLISH
/ LANGUAGE
:
RM-952
– 12 –
Using Your New TV
14
Setting the Wake Up timer
1
Press
until the desired
period of time appears.
The Wake Up timer starts
immediately after you have
set it.
2
Select the program number or video input you want to display when you
wake up.
3
Press ?/1 or set the Sleep timer if you want the TV to turn off automatically.
The
indicator on the TV lights up orange.
To cancel the Wake Up timer
Press
until “WAKE UP TIMER: OFF” appears or turn off the TV’s
main power.
Note
• If no buttons or controls are pressed for more than two hours after the TV
is turned on using the Wake Up timer, the TV automatically goes into the
standby mode. To continue watching the TV, press any button or control
on the TV or the remote.
Setting the Sleep timer
Press
until the desired
period of time appears.
The Sleep timer starts
immediately after you have
set it.
To cancel the Sleep timer
Press
until “SLEEP TIMER: OFF” appears or turn the TV off.
WAKE UP TIMER:10M
WAKE UP TIMER:OFF
WAKE UP TIMER:12H00M
After 10 minutes
No Wake Up timer After 12 hours
SLEEP TIMER:30M
SLEEP TIMER:60M
SLEEP TIMER:OFF
SLEEP TIMER:90M
After 30 minutes
No Sleep Timer
After 60 minutes
After 90 minutes
Watching the TV (continued)
Advanced Operations
15
Advanced Operations
SOUND MODE
Customizing the
picture and sound
You can customize the picture and
sound by selecting the picture and
sound modes or by adjusting its
settings.
You can change the sound effect by
selecting the surround mode.
Selecting the picture and sound modes
To select the picture mode
Press PIC MODE
repeatedly until you get
the desired picture mode.
Select To
“DYNAMIC” view high contrast pictures.
“STANDARD” view normal contrast pictures.
“SOFT” view mild pictures.
To select the sound mode
Press SOUND MODE
repeatedly until you get
the desired sound mode.
Select To
“DYNAMIC” listen to dynamic and clear sound that emphasizes the low and
high sound.
“DRAMA” listen to sound that emphasizes vocals and background music.
“SOFT” listen to soft sound.
PIC MODE
SELECT
+ or –
TV
0
SOUND
MODE
FAVORITE
PROGR
STANDARDDYNAMIC
SOFT
PIC MODE
≥
DYNAMIC
≥
DRAMA
≥
SOFT
SOUND
MODE
Advanced Operations
continued
– 13 –
KV-XA25P52A
RM-952
Advanced Operations
16
Adjusting the picture and sound settings
1
Press SELECT until the
desired setting appears.
Each time you press
SELECT, the setting
item will change as follows:
2
Press + or – to adjust the
item.
3
To adjust other items, repeat steps 1 to 2.
* “HUE” can be adjusted for the NTSC system only.
Notes
• When you select a picture or sound mode, the adjusted settings will be
reset according to the selected mode.
• You can also use SELECT and
2
+/– on the TV to adjust the picture and
sound settings.
Selecting the wide mode
1
Press SELECT repeatedly
until “WIDE MODE”
appears.
2
Press + or – to select
“ON”.
Select To
“ON” change the picture size when receiving wide mode (16:9) picture
signal.
“OFF” turn off the wide mode.
PICTURE COLOR
BRIGHT
HUE*
BALANCE TREBLE
BASS
SHARP
PICTURE
60
SELECT
WIDE MODE: OFF
SELECT
OFF
ON
Customizing the picture and sound (continued)
Advanced Operations
17
SURROUND: MOVIE
SELECT
MUSIC
MOVIE
OFF
Selecting the surround mode
1
Press SELECT repeatedly
until “SURROUND”
appears.
2
Press + or – to select the
desired surround sound.
Select To
“MOVIE” listen to sound that spreads out over a large area, giving the feeling
of being at a movie theatre.
“MUSIC” listen to the sound that gives the feeling of being at a live concert.
“OFF” turn off the surround sound.
– 14 –
KV-XA25P52A
RM-952
Advanced Operations
18
Viewing your
favorite channels
You can display six of your favorite
channels for quick and easy selection.
You can program the favorite channel
as well.
Selecting a favorite channel
1
Press FAVORITE.
2
Press the number button
from 1 to 6 to select the
desired favorite channel.
When you use the
“F
AVORITE CH”
feature for the first time, six preset channels will appear.
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
FAVORITE
+ or –
PROGR +/–
Number
buttons
SELECT
FAVORITE CH SETUP :
FAVORITE CH SETUP :
1
2
3
4
5
6
1
FAVORITE
FAVORITE CH
1PR01 2 PR02 3PR03
4PR04 5 PR05 6PR06
SELECT
Programming the favorite channel
1
Press PROGR +/
– or
number buttons to select
the program number you
want to program (e.g.
program number 8).
2
Press SELECT until
“FAVORITE CH SETUP
”
appears.
3
Press + or – to select the
favorite channel you want to
program (e.g. 3).
4
Press SELECT.
The selected favorite channel (e.g.,3) turns
red for about one second.
5
To program other favorite channels, repeat steps 1 to 4.
or
1
2
3
4
5
6
7
8
0
-/--
9
PROGR
8
Advanced Operations
19
Blocking the
channels
(CHILD LOCK)
You can lock some program numbers to
prevent children from watching certain
channels by using the buttons on the
remote control.
1
Select the program number you want to lock.
2
Press SELECT until
“CHILD
LOCK” appears on the
screen.
3
Press + or – to select
“ON”.
The
symbol appears on
the screen.
To cancel, press + or – to
select “OFF”. The
symbol disappears from
the screen.
Note
• If you preset a locked program number, that particular program number
will be unlocked automatically.
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
SELECT
+ or –
CHILD LOCK: OFF
SELECT
CHILD LOCK: ON
1
– 15 –
KV-XA25P52A
RM-952
Advanced Operations
20
Enjoying bilingual
programs
You can enjoy bilingual programs of A2
bilingual system by using the A/B
button.
Press A/B repeatedly until you
receive the sound you want.
The on-screen display changes to
show the selected sound.
When receiving an A2 program
MAIN
A/B
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
Broadcasting On-screen display (Selected sound)
A2 bilingual
MAIN
SUB
(Main sound)
(Sub sound)
Additional Information
21
Self-diagnosis function
Your TV is equipped with a self-diagnosis function. If there is a
problem with your TV, the 1 indicator flashes red. The number of
times the 1 indicator flashes indicates the possible causes.
1
Check that the 1 indicator flashes red several times between three second
intervals.
2
Count the number of times the 1 indicator flashes.
3
Press ! (main power) to turn off your TV.
4
Inform your nearest Sony service center about the number of times the
1 indicator flashes.
Be sure to note the model name and serial number located on the rear of
your TV.
Front of TV
Additional Information
1
indicator
PROGRMENU
AUTO
PROGR
L(MONO)
2
Additional Information
– 16 –
KV-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 .
Possible cause
Symptom
Solutions
• 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 selected sound is
inappropriate.
• The power cord,
antenna or VCR is not
connected.
• The TV is not turned
on.
4
10
–
–
–
–
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.
• 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.
• 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.
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.
• Broadcast signals are
reflected by nearby
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.
• 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.
• 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.
• Press SELECT until
“COLOR SYS ”
appears on the screen, then check the
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.
12
13
–
–
–
11
–
–
16
11
–
–
continued
– 17 –
KV-XA25P52A
RM-952
24
Additional Information
Possible cause
Symptom
Solutions
–
13
11
21
–
–
Page
• The magnetic
disturbance from
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.
• 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.
• Keep external speakers or other electrical
equipment away from the TV.
• Press SELECT until
“PIC ROT
ATION”
appears on the screen, then press + or –
to adjust the picture position until it is
optimal.
• Use the fine tuning (FINE) function.
• Contact your nearest Sony service center.
—
—
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
PROGRSELECT
AUTO
PROGR
PROGRMENU
AUTO
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. –
AUTO PROGR
SELECT
PROGR +/–
!
2 +/–
1
t
i
continued
KV-XA25P52A
RM-952
– 18 –
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.
Label color
White
Green
Button function
For general TV
operations
For Teletext
operations
PageButton Function
SELECT
+/–
PROGR +/–
0 – 9, -/--
2 +/–
?/1
t
a
%
JUMP
Timer operations
PIC MODE
SOUND MODE
FAVORITE
Bilingual operations
A/B
Teletext operations
x (red, green,
yellow, blue)
10
10
12
12
12
12
13
13
13
13
13
14
14
15
15
18
20
–
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.
Set TV to turn on automatically.
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)
– 19 –
KV-XA25P52A
RM-952
KV-XA25P52A
One screw
(+BVTP 3 × 12)
1 Push the claw to direction
of arrow and remove
2 Spring compression
3 Power Button
1 Two screws
(+BVTP 4 x16)
2 Two screws washer head
(+P4 x16)
2 Three screws
(+BVTP 4 × 16)
1 Eight screws
(+BVTP 4 × 16)
3 Rear Cover
– 20 –
2-1. REAR COVER REMOVAL
2-4. SERVICE POSITION
SECTION 2
DISASSEMBLY
2-2. SPEAKER REMOVAL
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.
RM-952
2-3. CHASSIS ASSY REMOVAL
Note:
Undress necessary wires that creates tension
while placing the chassis into Service Position.
2-5-1. REPLACEMENT OF MULTI BUTTON
2-5-2. REPLACEMENT OF LIGHT GUIDE
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