Sony TRINITRON KV-B2531A User manual

SERVICE MANUAL
MODEL
kK
\/-
B
y)
5
3
1
A
RM-833
Italian
SCC-G81Q-A
K\-
B
y)
5
3
1
D
RM-833
AEP
—
SCC-G77Q-A
K
|//-
B
y)
5
3
3
B
RM-833
French
SCC-G85N-A
K\V-
B
)
5
3
3
E
RM-833
Spanish
SCC-G82P-A
BE-3B cuassis
SSIS NO. MODEL
TRINITRON COLOUR TV
ONY.

KV-B253
ITEM MODEL
_
Television
System
Stereo
System
Channel
Coverage
Color
System
|
-|
PAL
B/G/H
VHF:
E2-E12
UHE:
E21-E69
PAL
CABLE
TV
(1):
$1-S41
Italia
B/G/H
alian
GERMAN
Stereo
CABLE
TV
(2):
S01-S05,
M1-M10
,U1-U10
Video)
4.43
ITALIA.
VHF:
A-H2
|
PAL
B/G/H
VHF:
E2-E12
UHF:
E21-E69
CABLE
TV
(1):
S1-S41
CABLE
TV
(2):
S01-S05,
M1-M10
,U1-U10
PAL,
SECAM
French
BIGIH,
L,
|
SEAN,
NIGAM]
TALIA.
VHF:
A-H2
NTSC
3.58/NTSC
4.43
SECAM
L
VHF:
F02-F10
UHF:F21-F69
|
(Video
In)
CABLE(France)
VHF:B-Q
UHF:
S21-S41
|
UHF:
B21-Beg
rs
5
|
PAL
B/G/H
VHF:
E2-E12
UHF:
E21-E69
:
CABLE
TV
(1):
S1-S41
PAL,
SECAM
AEP
B/G/H,
D/K
GERMAN
Stereo
CABLE
TV
(2):
S01-S05,
M1-M10
,U1-U10
NTSC
3.58/NTSC
4.43
ITALIA
VHF:
A-H2
(Video
In)
SECAM
D/K
VHF:
RO1-R12
UHF:
R21-R60
|
ns
7
PAL
B/G/H
VHF:
£2-E12
UHF:
E21-E69
PAL,
SECAM
.
GERMANINICAM
CABLE
TV
(1):
S1-841
Spanish
BGM
Stereo
CABLE
TV
(2):
S01-S05,
M1-M10
,U1-U10
(Video
i),
NTSC
4.43
ITALIA
VHF:
A-H2
French
88Wh
MODEL Italian
Power Consumption 88Ww
Spanish
Specifications
Picture
tube
Super
Trinitron
Approx. 63 cm (25 inches)
(Approx.
59
cm
picture
measured
diagonally)
110° -deflection
Input/Output Terminals
[REAR]
~©)
1
21-pin
Euro
connector
(CENELEC
standard)
Inputs
for
audio
and
video
signals
inputs for RGB
outputs
of
TV
video
and
audio
signals
C 2/€8 2 21-pin Euro connector
inputs
for
audio
and
video
signals
inputs for S video
outputs
for
audio
and
video
signals
(selectable)
[FRONT] ;
3 Video input - phono jack
-©3 Audio inputs - phono jacks
€3 3 S video input - 4-pin DIN
2
Headphone
jack
-
Stereo
minijack
Sound
output
2x30W
(Music
power)
Approx.
663
x
506
x
507
mm
Weight
Approx.
36
kg
Supplied accessories
RM-833 Remote Commander (1)
IEC designation R6 battery (1)
Other features
Nicam
Fastext/TOP-Text
1 battery IEC designation
[RM-833]
Remote
control
system
infrared
control
Power
requirements
1.5V
dc
R6 (size AA)
Dimentions
Weight
Approx. 65 x 222 x 21 mm (w/h/d)
Approx. 157g (Not including battery)
Design
and
specifications
are
subject
to
change
without
notice.
—?—

Model name
item
KV-B2531A
KV-B2533B
V-B2533E
oT OFF
KV-B2531D E
oF oF
PIP
OFF OFF
OFF
|
7
RGB
Priority
ON ON
OFF
OFF
Scart
1
ON
ON
ON ON
ae
Scart
2
ON
ON
ON
a
ON
Front
in
(3)
|
ON
ON
ON
ON
Scart
4
OFF OFF
OFF
OFF
|
Projector
OFF
OFF
OFF
i
OFF
AKB
in
16:9
mode
ON
ON
ON ON
Norm
B/G/H
ON ON ON
ON
OFF
ON
OFF
=
OFF
OFF
OFF
ON
OFF
Norm
AUS
OFF
OFF
OFF
OFF
Norm
L
OFF
|
ON
OFF OFF
Norm
SAT
OFF
OFF
OFF
Norm
M
OFF
OFF OFF OFF
TOP-Text
ON
|
ON
ON
ON
Nicam
stereo
OFF
ON
OFF
ON
Language
Preset
|__ltalian
Fi
French
German
Spanish
KV-B253

KV-B253
21 pin connector (aN /@2)
431 puede
a
=I
a
ga
a
a
a
a
a
a
Oogggoooo0
ooogogooo000
oa
a
o
a
o
Q
a
o
a
i=]
Signal
Signal level
Audio output B (right)
Standard level: 0.5Vrms
Output impedance:less than 1kohm*
cae
Audio input B (right)
Standard level:0.5Vrms
Input impedance:More than 10kohms’
3
Audio output A (left)
f
Standard level:0.5Vrms
Output impedance:less than 1kohm*
Ground (audio)
Ground (blue)
OC}; @ ofofo} of of ge
; “|
9
Audio input A (left)
Standard level:0.5Vrms
Input impedance:More than 10kohms’
Biue input
Function select (AV control)
0.7V3dB, 75ohms, positive
High state (9.5—12V):Part mode
Low state (0—2V):TV mode
input impedance:More than 10kohms
Input capacitance:Less than 2nF
oO O Ground (green)
i
OY
oe
20
1
O ®
Green Green
signal:0.7V+3dB.
19
a)
75ohms,
positive
17 oe 12 O O Open
7 16 13 Oo © Ground(red)
1 =
ae
14
O
O
Ground
(bianking)
13
12
15
pom
—a
Red
input
0.7V+3dB,
75ohms,
positive
11
Cc
Lo
Ol
(S
signal)
croma
input
0.3V43dB,
750hms,
positive
a
10
=r
;
-
—
16
oO
)
Blanking
input
(Ys
signal)
High
state
(1—3V)
9
Low
state
(0O—0.4V)
cease]
8
Input
impedance:750hms
7 ——
er
6
17
O
O
Ground
(video
output)
5
4
18
O O
Ground
(video
input)
3
c——
19
O O
Video
output
1V+3dB,
75ohms,
positive
|
ad
2
Sync:0.3V(-3,
+10dB)
1
Sj
‘Ss
=
=
|
20
_
Video
input
1V+3dB,
75ohms,
positive
a
JY)
z
Sync:0.3V(-3,
+100B)
—
Oo
Video
1V43dB,
75ohms,
positive
:
input/Y
(S
signal)
Sync:0.3V(-3,
+10dB)
21 © oO Common ground (plug, shield)
©
Connected
®
NotConnected
(open)
*
at
20Hz-
20kHz
Pin
No
Signal
|
Signal
level
|
1 Ground
2 Ground
3
Y
(S_
signal)
input
1V
+
3dB
75
ohm,
positive
Sync.
0.3V
-3/+10
dB
4
C(S
signal)
input
—_[0.3V
£3dB
75
ohm,
positive
Sync.
LG/S/ RID/DID 4a...
1g VEST RODD poses TG

KV-B253
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
1.
GENERAL
5.
DIAGRAMS
Getting
Started
0.0...
csessesesseseenesssescssusstsseeneenessrenes
6
S-L.
Block
Diagram
0...
cecseeseseeseeessecesseeneseeseeeeneseneee
25
Advanced
TV
Operations
.0......:.cccccssscssssscsssssssesesseesscsseses
7
5-2.
Circuit
Boards
Location
......c.ccccececsssseseeseetsesessesees
30
Advanced
Presetting
Functions
......0...ccccccsesscecsecessesesseeee
8
5-3.
Schematic
Diagrams
and
Printed
Wiring
Boards
.......
30
Teletext
Operation
oc
ceceesessesssessessessesesassestessecsececseaes
9
Connecting
Other
Equipment
...0...0.0.0..ccccesscsssessseseeseesees
10
For
Your
Information
.0.0.0...
cc
cccscssssssssssescssscsssserecseesaeses
10
2. DISASSEMBLY
2-1.
Speaker
Cover
Removal
..0.....cccccccssssssesssssssscsessessesseeee
11
2-2. Rear Cover Removal ........... ll
2-3.
Chassis
Assy
Removal
..........sccesssssscssesseesessecesscsseseee
12
5-4,
2-4,
Service
Position
0.00...
cececsecssssssseeseessescesssscsscsassssenens
12
2-5.
A
Board
Removal
.......c.ccssccssesssssesssssssssessessnecsreeseesees
13.
6.
EXPLODED
VIEWS
2-6.
Extension
Board
oi...
eccsssesessssssessessseseessssnsevsseees
13
6-1.
Chassis...
55
2-7.
Picture
Tube
Removal
.0.......ccccccsceccssccecssesesesceseesecsees
14
6-2.
Picture
Tube
56
3.
SET-UP
ADJUSTMENTS
7.
ELECTRICAL
PARTS
LIST..........00euesee
essen
57
3-1. Beam Landing
3-2. Convergence oes
3-3. FOCUS... eee
4. CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustment ..0.000....ccccccsccecceesseseenseseeeees 19
4-2, Test Mode 2 2 oe. eccccecssseeceseesesssseesestesestessssssesseeueas 20
4-3. BE-3B Self Diagnostic Software ........0000ccceeseeseeeees 3
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.
WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF
LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO
THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY SHADING AND MARK /\ ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND, IN THE PARTS
LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-
CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE
L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL,
OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE
OU AU BLINDAGE DU TUBE CATHODIQUE.
ATTENTION !!
AFIN D'EVITER TOUT RISQUE D'ELECTROCUTION PROVENANT
D'UN CHASSIS SOUS TENSION, UN TRANSFORMATEUR
D'ISOLEMENT DOIT ETRE UTILISE LORS DE TOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT RACCORDE
A L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA
SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
MARQUE /\ SUR LES VUES EXPLOSEES ET LES LISTES DE
PIECES SONT D'UNE IMPORTANCE CRITIQUE PUR LA SECURITE
DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE
DANS LE PRESENT MANUEL OU DANS DES SUPPLEMENTS
PUBLIES PAR SONY.

SECTION 1 GENERAL
Remove
the
Check
the
Refit
the
outside
cover
cover.
correct
making
sure
that
the
Full
polarity.
Function
side
is
visible.
About Battery Life
Under normal operation, a battery will last up to half a year.
Always remember to dispose of used battery in an environmental
friendly way.
Connecting
the
Aerial
Connect the aerial to the 1 socket at the rear of the TV.
{cable not supplied)
RY
19
The
operating
instructions
mentioned
here
are
partial
abstracts
from
the
Operating
Instruction
Manual,
The
page
numbers
of
the
Operating
Instruction
Manual
remain
as
in
the
manual.
(See inside of front cover and back cover)
Depress © Hi on the TV.
The TV turns on. ff the standby indicator 1 on the TV is lit,
press CQ @ or any number button @ on the Remote
Commander.
2 Press MENU @ on the Remote Commander.
The SELECT LANGUAGE screen appears,
3
Press
one
of
the
colour
buttons
®
on
the
Remote
Commander
to
select
a
language
(Press
the
white
button
@®
to
display
other
language
alternatives).
The
SELECT
LANGUAGE
screen
clears
and
all
subsequent
menus
appear
in the chosen language.
ENGLISH
* DEUTSCH
« FRANCAIS
* TTALIANO
* MORE
SELECT COL BUTTON
Note:
From
the
second
time
when
you
turn
on
the
TV,
the
MENU
screen
appears
instead
of
the
SELECT
LANGUAGE
screen.
Press
the
yellow
button
@
then
press
the
white
button
@
to
redisplay
the
SELECT
LANGUAGE
screen.
20
‘Tuning
into
Channels
_
You
can
tune
in
up
to
100
channels
to
programme
positions
either
automatically
or
manually.
auto
tuning:
A
single
button
press
allows
all
receivable
channels
to
be
tuned.
Use
if
you
are
unfamiliar
with
the
channel
numbers
of
stations.
manual
tuning:
Use
if
you
are
familiar
with
the
channe!
numbers
of
stations.
Choose the more appropriate way for you.
Tuning
in
to
Channels
Automatically
There
are
two
possibilities
for
auto
tuning;
A.
On
the
TV:
hold
down
@0
Bion
the
front
of
the
TV
tor
2
seconds
Note:
The
button
0
&
for
Automatic
Presetting
of
channels
is
protected
to
prevent
accidental
usage.
Use
the
tip
of
a
pencil
to
press
it
or
B. On the Remote Commander: as follows
1 Press MENU @.
2 Press the white button @.
3 Hold down tha red button @ for 2 seconds,
Note: Press the green button @ to cancel.
Tuning in to Channels Manually
Press MENU @. (=)
The MENU screen appears.
2 Press the white button @ to select PRESET.
The PRESET screen appears.
» AUTO TUNING
* MANUAL TUNING
+ PROGR. EXCHANGE
* EDIT PROGR. NAME
* FINE TUNE
SELECT COL BUTTON
3
Press
the
green
button
@
to
select
MANUAL
TUNING
The MANUAL TUNING screen appears.
01 B/G C21 -SONY
* SKIP OFF
+ OK
ENTER PROGR. NO.
USE NO, BUTTONS OR
CHANGE BY MENU +/—

Press the number buttons © or MENU +/- © to select a
programme position.
I you use the number buttons ©, enter a double-digit
number. (e.g. for programme number 4, first press 0, then 4)
5 Press the green button @,
Note: Use MENU +/- ©
to select TV system.
You can alternatively select input
sources which may be assigned to
programme positions. SELECT SYSTEM/INPUT
The display changes as follows: CHANGE BY MENUS
B/G => D/K =» AV1 =» RGB =» AV2 =» YC2 =» AVS =» YC3
MANUAL TUNING
01 B/G C21 -SONY
* OK
—————
6 Pess the green bution @.
Note: If a video input source is ne
selected in step 5, this is now Oi BIG CASON
stored. *c/S
Refer to step 4 to tune other * OK
programme positions. ENTER CHANNEL NO.
USE NO. BUTTONS OR:
SEARCH BY MENU +/-
Hf you have selected B/G in step 5, press the red button @®
to select C (regular channel) or S (cable channel).
Press the number buttons @ or MENU+/- @ to select the
channel number.
if you use the number buttons @, enter a double-digit
number. (e.g. for channel 23, first press 2, then 3)
9 Press the green button @ to store.
Note: If you want to preset other channels, repeat steps 4 to 9.
10 Press MENU @ twice to return to the normal screen.
Note: You can skip unused programme positions when selecting
programmes with the PROGR +/-— buttons ®.
Press the red button @ to skip in step 4. However, the skipped
programmes may still be called up when you use the number
buttons.
Tuming the TV on and off
Turning on
Depress ® B8 on the TV.
Turning off temporarily
Press © @ on the Remote Commander.
The TV enters standby mode and the standby indicator BJ on the
front of the TV lights up.
Turning on again
Press CO @, PROGR +/- @®, or one of the number butions @ on
the Remote Commander.
Turning off completely
Depress © BJ on the TV.
Note: It is recommended to use © HM to turn off the TV.
This could help you save energy.
Selecting TV Programmes
Press PROGR +/- @ or press the number buttons @.
To select a double-digit number
Press --- @, then the number buttons @.
Adjusting the Volume
Press 1 +/- @.
Muting the Sound
Press 0X @
To resume normal sound, press &X @ again.
Displaying the On-screen Indications
Press & @ once to display the on-screen indications.
Press again to make the indications disappear.
Operating the TV Using the Buttons on the TV
With the buttons on the TV, you can adjust or select the functions
as follows:
B) to adjust the volume.
fo select programme numbers or to turn the
TV on from the standby mode.
Press -2) I to select the input source.
Press 630) 1 to preset channels automatically.
21
You can adjust picture and sound, preset channels to
programme positions and utilise other convenient features by
using the following menu system.
enter the MENU screen
select an item you want to
change (The selected item is
marked by a triangle)
2 a colour button @
change {or adjust) the
contents of the item
3 MENU +/- @
eG
iS)
4 MENU @ return to the MENU screen
5 MENU @ again return to the normal screen
Press MENU @ once or twice whenever you want to return
to the normal screen.
Note: When selecting menus, the picture becomes darker.
lf, however, an item in the PICTURE ADJUSTMENT menu is
selected, normal level of TV picture is restored to allow the best
adjustment.
22
Although picture and sound are adjusted at the factory you can
adjust them to suit your own taste.
Press MENU @.
The MENU screen appears.
2 Press the red button @ to select PICTURE or the green
button @ to select SOUND.
3 Press the respective colour button ® to select an item.
4 Press MENU +/- @ to adjust.
Press MENU @ twice or wait until the menu displays
disappear automatically to return to the normal screen.
PICTURE ADJUSTMENT
(First Page)
+ @ MINMUHL..
oo MINMIL.,
* @D_ WMD
* MORE
SELECT COL BUTTON
ADJUST BY MENU +/-
Press colour button
Red:
For Picture ® Less —-++— More
Green:
For Colour @ Less -+— More
Yeliow:
For Brightness % Darker —+— Brighter
Blue:
For Sharpness Sotter —+— Sharper
White: Next page of
PICTURE ADJUSTMENT

PICTURE ADJUSTMENT
(Second Page) —
PICTURE AGIUSTMENT =
COLOUR TONE NORMAL
* FORMAT NORMAL
* ROTATION NORMAL
et MINE.
* BACK
SELECT COL BUTTON
CHANGE BY MENU +/-
SOUND ADJUSTMENT
(First Page)
ts HIM.
* MORE
SELECT COL BUTTON
ADJUST BY MENU +/-
Press colour button
Press colour button Effect
Red:
For Colour Tone Normal => Warm
{reddish colour tone)
=>Cool (blueish colour tone)
Green:
For Format Normal: Normat setting
16:9 Wide screen effect
Yellow:
For Picture Rotation Normal: Normal setting
{only for KV-B2931D) -5 ~ +5: Adjust the picture slant
which may be caused by the
earth magnetism
Blue:
For Hue control KJ Reddish —+— Greenish
(only for NTSC
video signals)
White: Back to first page of
PICTURE ADJUSTMENT
Note: Press >*€ @ on the Remote Commander to reset to the
factory preset levels for picture and sound.
Red:
For Volume 4 less —+— More
Green:
For Treble Less ——+— More
Yellow:
For Bass > Less —-+— More
Blue:
For Balance bk. More left — more right
White: Next page of
SOUND ADJUSTMENT
SOUND ADJUSTMENT
(Second Page)
SOUND ADIUSTMENT
* SPACE SOUND OFF
* LOUDNESS OFF
* dq STEREO
* RESET
* BACK
SELECT COL BUTTON
CHANGE BY MENU +/—
Press colour button Effect
Red:
For Space Sound
OFF: normal sound
ON: for a special acoustic
sound effect
Green:
For Loudness OFF: normal sound
ON: when listening to low volume
sound
Yellow:
Stereo => Mono A (left channel)
=> Mono B (right channel)
=> Mono
For Stereo/Dual
Blue:
For
Reset
Resets
picture
and
sound
to
the
factory
preset
levels.
White: Back to first page of
SOUND ADJUSTMENT
Note:
Press
>*<
@
on
the
Remote
Commander
to
reset
to
the
factory
preset
levels
for
picture
and
sound.
23
With
your
TV
you
can
utilise
special
features
such
as
Parental
Lock
or
Sleep
Timer.
Press MENU @.
The MENU screen appears. (3)
2
Press
the
yellow
button
@
to
select
FEATURES.
3
Press
the
respective
colour button
@
to
select
an
item.
4 Press MENU +/~- © to change.
5
Press
MENU
@
twice
or
wait
until
the
menu
displays
disappear
automatically
to
return
to
the
normal
screen.
———$$_—$$$$_
al
hd
SLEEP TIMER OFF
* PARENTAL LOCK OFF
* TV BUTTON LOCK OFF
* DEMO MODE
* LANGUAGE
SELECT COL BUTTON
CHANGE BY MENU +/-
Press colour button
Red:
For Sleep Timer
{Automatic switch off
OFF => 0:30 => 1:00 =>
1330 => 2:00 (hours)
function)
After
the
selected
time
the
TV
set
switches
itself
automatically
into
standby
mode.
Green:
For Parental Lock
(For preventing
children from watching
programmes which
you consider unsuitable)
OFF: Normal setting
ON: The Tv-channel you are
waiching is now blocked.
In this way you can prevent
undesirable broadcasts
from appearing on the screen.
Yeltow
For TV Button Lock OFF: Normal setting
ON: The buttons on the
TV do not function anymore.
(The Remote Commander
Still operates)
Blue:
For Demo Mode ON: A sequence of menu
pictures is displayed.
Press any button on the
Remote Commander to stop
the function.
White:
For Language The SELECT LANGUAGE
screen appears.
24
Exchanging
Programme
Positions
You
can
exchange
the
programme
positions
to
a
preferred
order
(example:
exchange
programme
09
(channel
C21)
with
programme
15
(channel
C24)).
Press MENU @.
The MENU screen appears (ey)
2 Press the white button @.
The PRESET screen appears.
3 Press the yellow button @.
The
PROGR,
EXCHANGE
SCREEN
appears.
01 B/G C21 - SONY
* NEXT CHANNEL
* PREVIOUS CHANNEL
* STORE
SELECT COL BUTTON
4
Press
the
white
button
@
repeatedly
until
the
desired
Programme
number
(09)
appears.
a
5
Press
the
red
or
the
green
button
@
repeatedly
until
the
desired
channel
number
(C24)
appears.
Press the white button @ to store.
Now
the
exchange
has
been
completed.
Channel
C24
is
tuned
in
to
programme
09
and
channel
C21
is
tuned
in
to
programme
15.
7
Press
MENU
@
twice
to
return
to
the
normal
screen.
Editing Programme Names
In
case
of
channels,
which
broadcast
VPS
signals,
programme
names
are
usually
stored
automatically
during
presetting
of
channels.
You
can
also
edit
the
programme
names
up
to
five
letters.
Press MENU @
The MENU screen appears. (ey)
2 Press the white button @.
The PRESET screen appears,
Press the blue button @.
The EDIT PROGR. NAME screen appears,
The first character flashes.
01 B/G C21 - SONY
* NEXT LETTER
* STORE
CHANGE BY MENU +/—

Press MENU +/- @ to edit the first letter.
The first letter changes as follows
A emp B oem... oe Z eo 1 ee... 9 ee “” (Space).
re
5 Press the red button @ to move to the next letter.
6 Repeat steps 4 to 5, until the fifth letter is chosen.
Press the green button @.
The programme name is stored, and the normal screen
appears. To edit another programme name, repeat
steps 1 to 7
Fine Tuning
You can adjust the receiving conditions by the FINE TUNE
function.
Press MENU @ ,
The MENU screen appears.
Press the white button ®.
The PRESET screen appears.
Press the white button ® again.
The FINE TUNE screen appears.
»* STORE
© EXITAVATCH
ADMUST BY MENU +/—
4 Press MENU +/- © to adjust the receiving condition.
5 Press the red button @ to store the adjustment, or press
the green button @ not to store.
Now the normal screen appears. if you have pressed the
green button, the fine tuned condition is cancelled once you
choose another programme.
Note: If the FINE TUNE screen disappears automaticalty before
you press the red button ®, the fine tuned condition is not
stored. Repeat steps 1 to 5.
Tuning in to a Channel Temporarily
You can tune in to a channel temporarily, even when it has not
been preset.
1 Press C @ on the Remote Commander.
For cable channels press © @ twice. The indication “C”
(or “S” for cable channels) appears on the screen.
Enter a double digit channel number using the number
buttons (e.g. for channel 23, first press 2, then 3).
The channel appears.
However, the channel is not stored.
25
“Teletext
Or
TV stations broadcast teletext programmes via the TV channels.
For basic operation of teletext, use the simple side of the Remote
Commander. For the advanced teatures of teletext, use the
buttons indicated in green on the full function side of the Remote
Commander.
Basic Teletext Operation
Switching Teletext on and off
Select the channel which carries the teletext service you
wish to view.
2 Press ©) @ to display Teletext.
H no teletext signal is broadcast, the
indication P100 is displayed on a black
screen.
Input three digits for the page number using the number
buttons ©.
The numbers are displayed on the screen and the requested
page appears in a few seconds.
Note: If you make a mistake, type in any three digits, then re-
enter the correct page number.
4 Press © @ to return to the TV mode.
Notes:
To change the teletext channels. First press CO @ to return to
the TV mode, then repeat steps 1 to 3.
* If the signal of a TV channel is weak, teletext errors may occur.
Advanced Teletext Operation
Using Fastext
With Fastext you can access pages with one button press.
When a Fastext page is broadcast, a colour-coded menu will
appear at the bottom of the screen. The colours of this menu
correspond to the red, green, yellow and blue buttons @ on the
Remote Commander.
Press the corresponding colour button @ on the Remote
Commander which corresponds to the colour-coded menu. The
page will be displayed in a few seconds.
Requesting the Index page
Press @ @. The Index page appears.
Accessing the next or preceding page
Press Ga(PAGE -) or @3 (PAGE +) @. The next or the preceding
page appears on the screen.
Superimposing the teletext display on the TV picture
Press © @ once if you are in text mode or press @ @ twice if in
TV mode.
To return to the normat teletext display press
© @ twice.
Preventing a teletext page from being updated or changed
Press @ (HOLD) @. The HOLD symbol (8) appears on the
screen and the selected subpage is held until you press © @ to
cancel.
26
Enlarging the teletext display
Press @) @ once to enlarge the upper half. Press twice to
enlarge the lower half.
Press again to restore
the normal display.
Revealing concealed information (6.g. answers to a quiz}
Press (2) (REVEAL) @. The information is revealed. Press (1 ®
again to conceal the information,
Watching TV while waiting for a requested page to be
displayed
1 Request a new teletext page.
2 Prass [X) (TEXT CL) @.
The TV programme is displayed and the symbol @ is
displayed at the top of the page.
Note: When the requested page is available the page number
is displayed at the top of the screen.
3 Press © @ to view the page.
To cancel the request
Display the teletext page, then press @ @. The request is now
cancelled. Press C @ to resume TV mode.
Using the Favourite Page system
You can store up to four of your favourite teletext pages per
programme with the help of the Favourite page systern. In this
way you have quick access to the pages you watch frequently.
Storing the Favourite Pages
Select the page you would like to store using the number
buttons ©.
Press + ® twice.
The colour prompts at the bottom of the screen flash.
Press any of the colour buttons © on the Remote
Commander to store the selected page.
The page is now stored on this button.
Repeat steps 1 to 3 for the other 3 pages available.
Displaying the Favourite pages
1 Press -> @.
2 Press the colour button © corresponding to the colour
Prompt onto which the desired page is stored.
The page is requested. (It may take a few seconds to be
received).
Note: Step 1 must be taken before every favourite page selection
otherwise the normal Fastext facility operates.
Using the Time Function in the TY mode
Press ©) @ to request the time. Press again to cancel the
request.
Note: This function is available only when teletext is broadcast.

You can connect optional audio/video equipment to this TV such
as VCRs, video disc players, cameras or stereo systems.
Available
output signal
Acceptabie
input signal
31 Audio/video Audio/video signal
(AV1/RGB) and RGB signal from TV Tuner
> 2/3 2 Audio/video Audio/video signal
(AV2/YC2) and S-video from selected source
signal
O3/-23 Audio/video No outputs
({AV3) signal
-©3/-433 BB Audio/S-video No outputs
(YC3)
To watch a video input picture, press ©) @ until the desired
video input appears.
To return to the normal TV picture, press =) @ repeatedly or
press CO @. Ss
If you have a decoder, connect it to 4) 1
signal
Connecting a VCR Using the TV Aerial Terminal
Connect the aerial output of the VCR to the aerial terminal EM of
the TV, It is recommended to tune in the VCR signal to
programme number "0”. For details, see "Tuning in to Channels
Manually” on page 20.
S$ video input (¥/C input) 0B.
Video signals may be separated into Y (luminance or brightness)
and C (chrominance) signals.
Separating the Y and C signals prevents them from interfering
with each other and therefore improves the picture quality
(especially luminance). This TV is equipped with 2 video input
terminals through which these signals can be input directly.
Checking
and
Selecting
the
Input
and
Output
Sources
‘Using
the
Menu
—
You can display a menu screen to see which input and output
source are selected. You can also change the selecting using this
menu.
Checking the input and Output Sources
Press MENU @.
The MENU screen appears.
2 Press the blue button @ to select INPUT/OUTPUT.
The INPUT/OUTPUT screen appears.
INPUTZOUTPOT: STs
Laks
AV2
wv <<]
SELECT COL BUTTON
CHANGE BY MENU +/-
Selecting an input Signal
Press
the
red
button
@
to
select
INPUT.
Press
MENU
+/-
@
to
select
the
desired
input
source.
You can select among the following sources:
TV @> AV1 @> RGB emp AV2 <=> YC? «=e AVS emp YCR
a eee ee er
Selecting an Output Signal
The CS 2/-€8 2 connector MM outputs the source input from the
other
connectors.
Press
the
green
button
@
to
select
OUTPUT.
Press MENU +/~ @ to select the desired output source.
You can select among the following sources:
TV => AVI e=> AV2 em YC2 tmp AV3 ame YC
eee ee
Note: Press @ twice or wait until the menu display disappears
automatically to return to the normal screen.
‘Remote Control of Other Sony
‘Equipment
You can use the TV Remote Commander to control most Sony
remote-controlled video equipment such as: Beta, 8 mm or VHS
VCRs or video disc players.
Tuning the Remote Comander to the
equipment
1 Set the VTR 1/2/3 MDP selector @ according to the
equipment you want to control:
VTR 1: Bela or VCR
VIR 2: 8mm VCR
VTR 3: VHS VCR
MOP: Video Disc Player
2 Use the buttons @ to operate the additional equipment.
Notes:
* if your video equipment is furnished with a COMMAND MODE
selector: set this selector to the same position as the VIR 42/3
MCP selector on the TV Remote Commander.
* if the equipment does not have a certain function, the
corresponding button on the Remote Commander will not
operate
* When you use the @ (record) button, make sure to press this
button and the one to the right of it simultaneously,
Using Headphones
You can utilise headphones. Connect them to the headphone
jack Hl, then the sound from the speakers goes off.
Note: You can't controt the sound adjustment except for volume.
27
For your Information
Troubleshooting
Here
are
some
simple
solutions
to
problems
which
may
affect
the
picture
and
sound.
No picture (screen is dark), no sound
+ Plug the TV in.
*
Press
©
BM
on
the
TV.
(If
the
standby
indicator
BB
is
lit,
press
©
@
or
any
number
button
@
on
the
Remote
Commander)
+ Check if the selected video source is on,
*
Turn
the
TV
off
for
three
or
four
seconds
and
then
turn
it
on
again
using
OW.
Poor
or
no
picture
(screen
is
dark),
but
good
sound
+
Press
MENU
@
to
enter
the
MENU
screen,
and
press
the red button @, then adjust @ and x,
Tr
Good picture but no sound
+ Press 1+ ®,
*
If
8X
is
displayed
on
the
screen,
press
ox
@.
No colour for colour programmes
*
Press
MENU
@
to
enter
the
MENU
screen,
and
press
the red button @, then adjust @.
Remote
Commander
does
not
funcion
+ Replace the battery.
it
you
continue
to
have
problems,
have
your
TV
serviced
by
qualified
personnel.
Never
open
the
casing
yourself.
28
ee ee ee

KV-B253
SECTION 2
DISASSEMBLY
2-1.
SPEAKER
COVER
REMOVAL
ae
Hold
the
speaker
cover
by
the
front-top
with
one
hand,
¥
and
pull
it
up
by
the
rear-bottom
with
the
other.
@® Speaker cover (L)
@) Two screws
(BVTP4x16)
as @) Two screws
: % (BVTP4x16)
@) Five screws
(BVTP4x16)
ee
8) Rear cover
S44

KV-B253
2-3.
CHASSIS
ASSY
REMOVAL
8) H bracket
@) After the assembly of the main
chassis, lift and puil out the rear
part of the main chassis towards
the rear.
of
the
arrow
and
remove
the
H
bracket
upwards.
2-4. SERVICE POSITION
—12—

KV-B253
2-5.
A
BOARD
REMOVAL
A Board
2-6. EXTENSION BOARD
BE-3B
A
extension
board
A
Board
fs, ce

KV-B253
2-7.
PICTURE
TUBE
REMOVAL
© Degaussing coil
Spring
@) Two DGC holder @) Chassis assy
6) Reflector
® Deflection yoke
6) Reflector
Picture tube
Cushion
¢
REMOVAL
OF
ANODE-CAP
Note:
Short
circuit
the
anode
of
the
picture
tube
and
the
anode
cap
to
the
metal
chassis,
CRT
shield
or
carbon
paint
on
the
CRT,
after
removing
the
anode.
* REMOVING PROCEDURES.
o&
6.
Gd)
Turn
up
one
side
of
the
rubber
cap
in
Q)
Using
a
thumb
pull
up
the
rubber
cap
@®
When
one
side
of
the
rubber
cap
is
the
direction
indicated
by
the
arrow
(a)
firmly
in
the
direction
indicated
by
the
separated
from
the
anode
button,
the
arrow
©)
anode-cap
can
be
removed
by
turning
up
the
rubber
cap
and
pulling
it
up
in
¢
HOW
TO
HANDLE
AN
ANODE-CAP
the
direction
of
the
arrow
©
Don't
damage
the
surface
of
anode-cap
with
sharp
shaped
material
!
Don't
press
the
rubber
hardly
not
to
hurt
inside
of
anode-caps
!
A
metal
fitting
called
as
shatter-hook
terminal
is
built
into
the rubber.
Don’t
turn
the
foot
of
rubber
over
hardly
!
The
shatter-hook
terminal
will
stick
out
or
damage
the
rubber.
—14—

KV-B253
SECTION 3
SET
-
UP
ADJUSTMENTS
*
When
complete
readjustment
is
necessary
or
a
new
*
Carry
out
the
following
adjustments
in
this
order
:
picture
tube
is
installed,
carry
out
the
following
1.
Beam
landing
adjustments.
2.
Convergence
*
Unless
there
are
specific
instructions
to
the
contrary,
3.
Focus
carry
out
these
adjustments
with
the
rated
power
4.
White
balance
supply.
*
Unless
there
are
specific
instructions
to
the
contrary,
set
Note:
Testing
equipment
required.
the
controls
and
switches
to
these
settings
:
1.
Colour
bar/pattern
generator
2.
Degausser
QD
Contrast
ow.
80%
(or
remote
control
3.
DC
power
supply
normal)
4,
Digital
multimeter
xx
Brightness
...........
50%
5.
Oscilloscope
Preparation:
Fig.
3-2
,
*
In
order
to
reduce
the
influence
of
geomagnetism
on
:
ual
pone
the
set's
picture
tube,
face
it
east
or
west.
*
Switch
on
the
set's
power
and
degauss
with
the
degausser.
3-1.
BEAM
LANDING
1.
Input
the
white
signal
with
the
pattern
generator,
CONTRAST
CiSMRAt
BRIGHTNESS
2.
Set
the
pattern
generator
raster
signal
to
red.
3.
Move
the
deflection
yoke
forward
and
adjust
with
the
purity
control
so
that
the
red
is
at
the
centre
and
the
blue
and
the
green
take
up
equally
sized
areas
on
each
side.
(See
Fig.
3-1
-
3-3)
4.
Move
the
deflection
yoke
forward
and
adjust
so
that
the
entire
screen
becomes
red.
(See
Fig.
3-1)
5.
Switch
the
raster
signal
to
blue,
then
to
green
and
verify
the
condition.
Disk
magnets
or
6.
When
the
position
of
the
deflection
yoke
has
been
rotatable
disk
decided,
fasten
the
deflection
yoke
with
the
screws.
Heeameec.
d)
7.
Ifthe
beam
does
not
land
correctly
in
all
the
corners,
:
use
a
magnet
to
adjust
it.
(See
Fig.
3-4)
Fig.
3-4
—15—

KV-B253
3-2. CONVERGENCE
Preparation:
°
Before
starting
this
adjustment,
adjust
the
focus,
°
Tilt
the
V.STAT
magnet
and
adjust
the
static
horizontal
size,
and
vertical
size.
convergence
by
opening
or
closing
the
V.STAT
magnet.
* Minimize the brightness setting.
¢ Provide a dot pattern.
(1)
Horizontal
and
vertical
static
convergence
Center dot
4.
If
the
V.STAT
magnet
is
moved
in
the
direction
of
the
(a)
and
(b)
arrows,
the
red,
green,
and
blue
points
move
as
shown
below.
SCREEN
1.
(Moving
horizontally),
adjust
the
HSTAT
control
so
that
the
red,
green,
and
blue
points
are
on
top
of
each
other
at
the
centre
of
the
screen.
2.
(Moving
vertically),
adjust
the
V.STAT
magnet
so
that
the
red,
green,
and
blue
points
are
on
top
of
each
other
at
the
centre
of
the
screen.
3.
Ifthe
H.STAT
variable
resistor
cannot
bring
the
red,
green,
and
blue
points
together
at
the
centre
of
the
screen,
adjust
the
horizontal
convergence
with
the
©
H.STAT
variable
resistor
and
the
V.STAT
magnet
in
©
3
ye
the manner given below.
(In
this
case,
the
H.STAT
variable
resistor
and
the
’®
V.STAT magnet influence each other)
46

KV-B253
*
Operation
of
BMC
(Hexapole)
Magnet
*
The
respective
dot
position
resulting
from
moving
each
magnet
interact,
so
be
sure
to
perform
adjustment
while
tracking.
Use
the
H.STAT
VR
to
adjust
the
red,
green,
and
blue
dots
so
they
coincide
at
the
centre
of
the
screen
(by
moving
the
dots
in
the
horizontal
direction).
(2)
Dynamic
convergence
adjustment.
Preparation:
2.
Remove
the
deflection
yoke
spacer.
°
Before
starting
this
adjustment,
adjust
the
horizontal
3.
Move
the
deflection
yoke
as
shown
in
the
figure
static
convergence
and
the
vertical
static
convergence.
below
and
optimize
the
convergence.
1.
Slightly
loosen
the
deflection
yoke
screws.
4.
Tighten
the
deflection
yoke
screws.
5. Re-install the deflection yoke spacer.
B GRR GB
OrO4t0
—17—

KV-B253 |
(3)
Screen
corner
convergence.
If
you
are
unable
to
adjust
the
corner
convergence
properly,
correct
them
with
the
use
of
permalloy
assemblies.
a-d:
screen-corner
convergence defect
Install
the
permalloy
assembly
for
the
section
with
fault
Permalloy
3-3. FOCUS
Adjust
the
focus
to
optimize
the
screen.
FOCUS
3-4.
WHITE
BALANCE
Screen G2 Setting
1.
Input
the
dot
signal
from
the
pattern
generator.
.
Set
the
picture
brightness
control
to
its
lowest
level.
3.
Apply
180V
DC
to
the
R,G,
and
B
cathodes
with
an
external
power
supply.
4.
While
watching
the
picture,
adjust
G2
control
RV701
(Screen)
to
the
point
just
before
the
return
lines
disappear.
White balance adjustment
1. Receive an all-white signal.
Enter
into
service
mode.
(Refer
to
the
section
4
"Electrical
Adjustment"
on
how
to
enter
service
mode.)
3. Select TDA8366 1 on menu.
DEVICE : TDA8366 1
STAT: 12
O NEXT
O PREVIOUS
O OK
USE COLOUR KEYS
SONY TEST MENU.
4.
Press
the
White
button
on
the
Remote
Commander
to
enter
into
the
device
Menu.
5.
Press
the
Red
button
10
times
"Next"
"Next"
"Next"
to
select
HWB
RED,
adjust
to
32.
6.
Press
the
Red
button
to
select
HWB
GREEN,
adjust
with
the
+
and
-
menu
buttons
so
that
the
white
balance
becomes
optimum.
7.
Press
the
Red
button
to
select
HWB
BLUE,
adjust
with
the
+
and
-
menu
buttons
so
that
the
white
balance
becomes
optimum.
8.
Press
the
TV
button
twice
on
the
Remote
Commander
to
store
the
data
and
return
to
TV
operation.
— 18 —

SECTION 4
CIRCUIT
ADJUSTMENTS
4-1.
ELECTRICAL
ADJUSTMENTS
Service
adjustment
to
this
model
can
be
performed
with
the
supplied
remote
commander
RM-833.
HOW
TO
ENTER
INTO
SERVICE
MODE
1.
Turn
on
the
main
power
switch
of
the
set
and
enter
into
standby
mode.
| KV-B253
Initial
Conditions
for
setup
of
TDA8366,
TDA6612
and
SAA7283.
(
Stereo
Models
Only
)
2.
Press
the
following
sequence
of
buttons
on
the
Remote
Commander.
Pratl
+
(DISPLAY
(DIGIT
5)
(VOLUME
+)
(Ty)
ON
SCREEN)
“TT
”
will
appear
in
the
top
right
corner
of
the
screen.
Other
status
information
will
also
be
displayed.
3.
Press
the
MENU
button
on
the
Remote
Commander
to
obtain
the
menu
on
the
screen.
DEVICE
NAME
STAT
:
xxxx
QO
NEXT
O
PREVIOUS
O
OK
USE
COLOUR
KEYS
SONY
TEST
MENU.
4.
Press
the
Red
(Next)
and
Green
(Previous)
buttons
to
select
the
device
corresponding
to
the
adjustment
item
from
the
table.
Then
press
the
White
button
(OK).
[ DEVICE NAME i
00 ADJUSTMENT : xxx
O NEXT
O PREVIOUS
SELECT COL.BUTTON
CHANGE BY MENU +/-
5.
Press
the
Red
(Next)
or
Green
(previous)
buttons
to
select
the
adjustment
item.
Then
press
the
[and
|/\
buttons
to
change
the
data
to
comply
with
each
standard.
-
6.
Turn
off
the
power
to
quit
the
service
mode
when
adjustments are completed.
pipers
1
|
INIT
VALUE
|
TDA8366
2
|
INIT
VALUE
Hue
31
Interlace
00
H
Shift
is
Adj
Sync
Mode
00
[H
Size
Adj
Col
Dec
t-
00
Pin
Amp
Adj
Vert
Div
00
ComPin
|
Adj
~_
[Mato
00
Tilt
Adj
EHT
Track
01
|
V.Linear
Adj
En
V
Grd
00
V.Size
Adj
Serv
Bik
=r
00
|
S.Corr
Adj
OVP
Mode
00
V.Cent
~T
Adj
Aspect
R
00
|
HWB
Red
Start
Freq
00
HWB
Green
00
00
00
07
Picture
\
AGC Set
TDA6612
|
INIT
VALUE
|
tpaest2
INIT
VALUE
MPX Per 00 [a 2
Quasi
St
00
cists
Bass Exp 00 C1/2KH
H Pulse 0 Mono
[Matix St 00
Bypass 00
Vol L Sp 07
is
RSp
wis
07
SAA7283
00
Mon
M1/M2
0
DM Select
~-
Mute 1
SSWIT 123 07
Treble
03
te
2
00
Bass
09
Mute
Def
00
|
han Adj Adj AMDIS 00
80
Ot
—19—
8

KV-B253
4-2.
TEST
MODE
2:
Is
available
by
pressing
Test
button
twice,
OSD
'TT
'
appears.
The
functions
described
below
are
available
by
pressing
the
two
numbers.
To
release
the
Test
Mode
2,
press
0
twice,
or
switch
the
TV
into
Stand-by
Mode.
01 picture maximum
picture minimum
Volume 35%
Volume
50%
|
Volume 65%
Volume 80%
Ageing
Condition
(Volume
min.,
Picture
max.,
Brightness max.
Shipping
Condition
(Analog
Values
are
RESET
due
to
08
|
factory
setting,
Prog
1
is
selected,
TT
Mode
is
switched
off)
09
hen
Flag
request
10 Tenth entry is deleted
+5 are
[44 dummy
Read factory setting from NVM
Reads
Volume,
Balance,
Treble,
Bass,
Brightness,
Contrast,
Hue,
Sharpness,
Colour
values
from
ROM
to
the
actual
used
values
(Last
Power
Memory)
Save actual used values as RESET values
Memorize
actual
used
values
Balance,
Treble,
Bass,
Hue,
Sharpness
at
RESET
position
in
NVM.
Preset Label for AV Sources
RGB Priority on/off
Clear all preset labels
Tenth entry is deleted
Sub Contrast
Sub Colour
Sub Brightness
Set destination = U RGB Priority = Off
Set destination = D RGB Priority = Off
Set destination = B RGB Priority = On
Set destination = K RGB Priority = Off
Set destination = L RGB Priority = Off
Set destination = E RGB Priority = Off
|
00
|
switch
Test
Mode
2
off
+
30 ‘| Tenth entry is deleted
31 | Set Destination =A RGB Priority = On
| 2 | dummy
33
34 =| NS Pin Adjust
35 (| Manual AGC Adjust
SENET
eae
dummy
% | To Activate Rotation Coil Adjustment
39
|
'Check
Rotation
Coil
Adjustment
al
40
| Tenth
entry
is
deleted
41 | Re-initialise NVM
Production use only
Initialise all favorite pages = 100
42
43 | Initialise Geom Settings
44
45
Channel locks = off
IR Channel Pressetting Mode
46
|The
channel!
pressetting
can
be
done
by
a
Special
IR
Transmitter ( Ver 2 and above software only)
Set NVM testbyte to 44h
Erase the NVM Testbyte (this byte detects already
49
|
stored
NVM's)
After
selecting
this
function,
switch
TV
Off and On -> the NVM will be preset by y1-Controller.
In
Test
Mode
the
Menu
display
is
switchable
by
the
Speaker-Off
button.
Note
:
For
Test
Modes
41
-
49
it
is
necessary
to
ensure
that
the
TV
is
set
to
Prog
59.
— 20 —