Sony TRINITRON KV-25C5A User manual

SERVICE MANUAL FEF cuassis
MODEL
COMMANDER
DEST
CHASSIS
NO.
MODEL
COMMANDER
DEST
CHASSIS
NO.
KV-25C5A ress tana scocoorn =| KW=29C5A — evssso rain — scocoso.
KV-25C5B ewes wenn sccoreea | KV=29C5B rccss reno sce-cce0.
KV-25C5D ewes ser scocoura | KVe29C5D — rmcor rc? soc.coune
KV-25C5E aves spn socones | KVs29C5E suas son sccanso,
KV-25C5K swsss omr —scc-oran | KWe29C5K rmceso omr — sce-cose.
KV-25C5R ws om scoonma | KV=29C5R smoss or — scoccson
TRINTRON« COLOR TV
SONY:

KV-25C5/29C5
Channel Coverage
Color System
ITALIA VHF : A-H2 (C) UHF : 21-69 PAL
B/G/H VHF : E2-E12 UHF : E21-E69
$1-S41
: $01-S05, M1-M10, U1-U10
PAL
NTSC4.43, NTSC3.58
(VIDEO IN)
L VHF : F02-F10 UHF : F21-F60
CABLE : B-Q B/G/H VHF : E2-E12
$1-S41
$01-S05, M1-M10, U1-U10
ITALIA VHF : A-H2 (C) UHF : 21-69
PAL, SECAM
NTSC4.43, NTSC3.58
(VIDEO IN)
PAL B/G/H VHF : E2-E12 UHF : E21-E69
ITEM MODEL Television System Stereo System
Italian B/G/H GERMAN Stereo
CABLE TV (1):
CABLE TV (2)
UHF : E21-E69
French B/G/H, D/K, L, | GERMAN/NICAM CABLE TV (1):
Stereo CABLE TV (2) :
| UHF : B21-B69
CABLE TV (1) : S1-S41
AEP B/G/H, D/K GERMAN Stereo CABLE TV (2) :
Spanish B/G/H, D/K
ee
$01-S05, M1-M10, U1-U10
ITALIA VHF : A-H2 (C) UHF : 21-69
D/K VHF : RO1-R12 UHF : R21-R69
PAL, SECAM
NTSC4.43, NTSC3.58
(VIDEO IN)
GERMAN/NICAM
Stereo
PAL B/G VHF : E2-E12 UHF : £21-E69
CABLE TV (1) : S1-S41
CABLE TV (2) : S01-S05, M1-M10, U1-U10
ITALIA VHF : A-H2 (C) UHF : 21-69
PAL, SECAM
NTSC4.43, NTSC3.58
(VIDEO IN)
OIRT
B/G/H, D/K
KV-25C5K/29C 5K
GERMAN/NICAM
STEREO
B/G/H VHF : E2-E12 UHF : E21-E69
CABLE TV (1) : $1-S41
D/K VHF : RO1-R12 UHF : R21-R69
PAL, SECAM
NTSC4.43, NTSC3.58
(VIDEO IN)
| MODEL |
KV-25C5R/29C5R
GERMAN STEREO
[PICTURE TUBE]
KV-25C5
KV-29C5
Super Trinitron
Approx. 63cm (25 inches)
(Approx. 59cm picture measured
diagonally)
110 degree deflection
Super Trinitron
Approx. 72cm (29 inches)
(Approx. 68cm picture measured
diagonally)
110 degree deflection
Input/Output Terminals
[REAR]
E17 21-pin Euro connector (CENELEC standard).
Inputs for Audio and Video signals.
Inputs for RGB.
Outputs of TV Video and Audio signals.
(>2/-$9§) 21-pin Euro connector.
inputs for Audio and Video signals.
inputs for S Video.
Outputs for Audio and Video signals (selectable).
Phono Jack
Outputs for Audio Signals
| 2505 | 25C5B 25C5D | 25C5E | 25C5K | 25C5R | | 2008A | | 20C5B | | 2950 |
aa
29C5R
[FRONT]
(+2 Video input - phono jack
2 Audio inputs - phono jacks
5) § Video input 4 pin DIN
() Headphone jacks : stereo minijack
Sound output 2 x 20W (Music Power)
Power requirements 220 - 240V
Dimensions
KV-25C5 Approx 717x507x494mra.
KV-29C5 Approx 794x567x545mr1a
Weight
KV-25C5 Approx 33kg
KV-29C5 Approx 43kg
RM-883 Remote Comm nder (1)
IEC designated R6 batte-y (1)
NICAM*, FASTEXT, T9PTEXT
*(KV-25C5B/25C5E/25C/
29C5B/29C5E/29CX_ only)
Supplied accessories
Other features
[RM-883]
Remote control system infrared control
Power requirements 1.5V de
1 battery IEC designatia :
R6 (size AA) |
Dimensions Approx 65x225x21mmiw/h/d) |
Weight
Approx
157g
(Not
inclugng
battery)
Design and specifications are subject to change (shout notice.

KV-25C5/29C5
Model Name | | KV-25C5A KV-25C5B KV-25C5D KV-25C5E Kv2scsk | KV-25C5R
har KV-29C5A KV-29C5B -KV-29C5D KV-29C5E KV-29C5K KV-29C5R
‘Pal Comb OFF OFF OFF OFF OFF OFF
PIP OFF OFF OFF OFF OFF OFF
RGB Priority OFF | OFF OFF ON OFF OFF
Woofer Box OFF | OFF OFF OFF OFF OFF
Scart 1 ON ON ON ON ON [ ON
Scart 2 ON ON ON ON ON ON
Front in (3) ON ON ON ON ON ON
Scart 4 OFF OFF OFF OFF OFF =i OFF
| Projector OFF OFF OFF OFF OFF OFF
AKB in 16:9 mode ON ON ON ON ON ON
ON ON ON ON ON ON
= AUS OFF OFF OFF OFF OFF OFF
“Norm SAT - OFF OFF OFF OFF OFF OFF
Et aan Le OFF OFF OFF OFF OFF
Nicam Stereo OFF ON OFF ON ON OFF
| Language Preset Italian | French German | Spanish OIRT OIRT

KV-25C5/29C5
|
. 2,4 u
21
pin
connector
((2>1/-63,
C-2/-692)
[
Pin
No
|
1
|
Signal
Signal
level
Audio output B Standard level : 0.5V rms
O 2 O (right) Output impedence : Less than 1kohm”
Audio output B Standard level : 0.5V rms
O}O JO (right) Output impedence : More than 10kohm*
Audio output A Standard level : 0.5V rms
OJOJO (left) Output impedence : Less than 1kohm* |
| 4 | O10 {© Ground (audio)
ee
_
5
Oo
[o
©
|Ground
(blue)
6 Audio input A Standard level : 0.5V rms
=
6
O}|OJO
(left)
Output
impedence
:
More
than
10kohm*
© 7 O |@ | @ | Blue input 0.7 +/- 3dB, 75 ohms positive
Ge
RIOIDD
High
state
(9.5-12V)
:
Part
mode
Function select Low state (0-2V) : TV mode
O}OjJO (AV control) Input impedence : More than 10K ohms
Input capacitance : Less than 2nF
8 JO [Oo [Seons aren
a) [#9 [0 [0 [0 [oven
SA
:
Green Green signal : 0.7 +/- 3dB, 75 ohms,
21 ees 20 pa O|@ |@ positive
if
Open
{ 19 —— | 2 [ol
c— 18 he 18] O10 [© |Ground (rea)
17 — | 4 Jofo| © | Ground (blanking)
—
16
—
|
_
[Red
input
0.7
+/-
3dB,
75
ohms,
positive
15 a O
co
14
_
(S
signal
Chroma
0.3
+/-
3dB,
75
ohms,
positive
13 (es) O}O input)
rs 12 Blanking input High state (1-3V) Low state (0-0.4V)
11
—)
O|@|@
(Ys
signal)
Input
impedence
:
75
chms
= 10 17 ololo Ground (video
9 1 output)
a 8 Ground (video
7 (je pee O}O}O input)
|
6
Video
output
1V
+/-
3dB,
75ohms,
positive
sync
0.3V
5
=
OjO|O
(-3+10dB)
Ee
4
_
|
—
|Video
input
1V
+/-
3dB,
750hms,
positive
sync
0.3V
3
ee
O
(-3+10dB)
2
-lolo
Video
input
1V
+/-
3B,
750hms,
positive
sync
0.3V
1
a
Y
(S
signal)
(-34+10dB)
Common ground
— FF 7) OO |O |optug, shield)
© Connected @ Not Connected (open) * at 20H2 - 20kHz
Signal level
Y (S signal) input 1V+/- 3dB 75 ohm, positive Sync 0.3V -3/+10dB |
C (S signal input 0.3V+/- 3dB 75 ohm, positive Sync |
y MONO
eC) ©©®© 8
58) 2 ves ope

KV-25C5/29C5
TABLE OF CONTENTS
Section Title Page Section Title Page
1. GENERAL 4. CIRCUIT ADJUSTMENTS
Overview of TV buttons 4-1. Electrical Adjustments
Using Select Mode 4-2. Test Mode 2
Adjusting the Picture 4-3. FE-1 Self Diagnostic Software
Adjusting the Sound
Using the Sleep Timer 5. DIAGRAMS
Viewing Teletext
Exchanging Programme Pos
Manually Tuning the TV
Fine-Tuning Channels
Using Optional Equipment
Troubleshooting
Specifications
2. DISASSEMBLY
2-1. Rear CoverRemoval ———haasecssecsessersene 12
2-2. Chassis Assy Removal aaeeeeeeeeseseeeees 12
2-3. Service Position
2-4. H1 Board Removal
2-5. S1 Board Removal
2-6. Picture Tube Removal
2-7. Removal and Replacement of the
Main - Bracket bottom plates
3. SET-UP ADJUSTMENTS
3-1. Beam Landing
3-2. Convergence
3-3, Screen [G2] White Balance
3-4, Focus
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE
ANODE CAP
WARNING !!
AN ISOLATING TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE
CHASSIS.
THE
CHASSIS
OF
THIS
RECEIVER
IS
DIRECTLY
CONNECTED TO THE POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED A 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.
5-1. Block Diagram
5-2. Circuit Board Location
5-3. | Schematic Diagrams and
Printed Wiring Boards
* $1 Board
A Board
VM Board (KV-29C5 only)
C Board
H1 Board
5-4. | Semiconductors
5-5. IC Blocks
* * € *
6. EXPLODED VIEWS
6-1. Chassis £2 2 2 nniteecusenseeee 56
6-2. PictureTube eee eetestavsne 57
7. ELECTRICAL PARTS LIST — ue 58
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE’LANODE,
COURT-CIRCUITER LANODE DU TUBE CATHODIQUE ET
CELUI DE L ANODE DU CAP AU CHASSIS METALLIQUE
DE L’-APPAREIL, OU AU COUCHE DE CARBONE PEINT E
SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION !!
AFIN D’EVITER TOUT RISQUE D’ELECTROCUTION PROVENANT
D’UN CHASSIS SOUS TENTION, UN TRANSFORMATEU R
D’'ISOLEMENT DOIT ETRE UTILISE LORS DE TOUT DEFPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTMENT RACCORDE
A LALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS 4 LA
SECURITE !!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR. UNE
MARQUE A SUR LES SCHEMAS DE PRINCIPE, LES VUES
EXPLOSEES ET LES LISTES DE PIECES SONT D’UNE IMP ORTANCE
CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT, DNELES
REMPLACER QUE PAR DES COMPSANTS SONY DONT LE* NUMERO
DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OLJ DANS
DES SUPPLEMENTS PUBLIES PAR SONY.

Basic TV Features
Overview of TV Buttons
from VCR etc.)
Video Input Button.
(selects input signals
SECTION 1 GENERAL
Instruction Manual remain as in the manual.
Additional TV Features
Using Select Mode
You can select different preset picture and sound modes.
1 Press the MENU button on the remote control to
display the menu on the TV screen.
=~
The operating instructions mentioned here are partial abstracts
from the Operating Manual. The page numbers of the Operating
Auto Tune
Button.
2 With the cursor pointing at the [:2] symbol on the
TV screen as shown, press the yellow button.
Volume Control Buttons.
Programme Up or
Down Buttons. 3 Press the blue button to select the desired mode:
To Mute Sound
Press to mute TV sound. Press again
to restore the sound.
To Select Channels
Press to select channels.
For double-digit programme = __
numbers, e.g. 23, press -/-- first,
then the buttons 2 and 3.
To Change Screen Format
Press to view programmes in 16:9
mode.
Press again to return to 4:3 mode.
To Adjust TV Volume
Press to adjust the volume of the TV.
| (e@OC@Ole
=
S|
EGOOOCB
(selects TV channels).
Personal Mode - reverts to settings made in
“Adjusting the Picture and Sound” sections of
the manual
fF Movie Mode - for films
f, Live Mode - for live broadcast programmes
(BOOOOL ®@ |
=| #OQOCOO
PROGR
i a
To Temporarily Switch Off TV ob. “(+)
Press to temporarily switch off TV. Press
again to switch on TV from standby —
mode. NS
To save energy we recommend switching off
completely when TV is not in use.
NOTE: After 15 - 30 minutes without a
TV signal and without any button being
pressed, the TV switches automatically
into standby mode.
4 Press the MENU button to remove the menu
display from the TV screen.
[R) am-sas
Note: The mode selected in step 3 is now stored.
Changing Modes Quickly
1 Press the ™@ button on the remote control to display
To
Reveal
On
Screen
Information
the
three
different
modes.
Press to reveal all on-screen indications.
P
ain
to
1
2
Press
the
@
button
again
to
select
your
desired
Tess
agal
cancel.
mode.
To Select Channels
Press to select channels.

Additional TV Features
Adjusting the Picture
Although the picture is adjusted at the factory, you can modify it to suit your own
requirement.
HOCCEC (oc @
|HO000
€€oOoe(s
1 Press the @ button on the remote control to
display the three different modes on the TV
screen.
2 Press the @ button to highlight the personal mode
symbol as shown.
3 Press the MENU button to display the menu on
the TV screen.
4 Press the blue button on the control to select the
© symbol on the TV screen then press the yellow
button.
5 Press the blue button to select the item you wish
to change (see below).
Additional TV Features
PNo li Uri diatom datsmetel ll ale]
Although the sound is adjusted at the factory, you can modify it to suit your own
6 Press the red or yellow button to alter the selected
item.
7 Press the MENU button to remove the menu
display from the TV screen.
Symbol Item
* Contrast
¢ Colour
° Brightness
* Sharpness
¢ Hue control (only for NTSC video signals)
¢ Reset - resets to factory preset picture level
* Picture rotation - adjusts picture tilt
(only for KV-29C5D model)
¢ Represents the mode selected in the “Using
Select Mode” section.
requirement.
ATER
A S a ate 1 Press the @ button on the remote control to
E- by a display the three different modes on the TV
ge A 2 screen.
oso aoe “a i
eS & & 28 2 Press the @ button to highlight the personal mode
E=ee
@
@)
()
|
symbol
as
shown.
ie OO ©
ES ae oS eT @ @) 3 Press the MENU button to display the menu on
oO () @) the TV screen.
2 4 BS ivecw
7 OFF: Clo &
eae ae 4 Press the blue button to select the J symbol on the
ro TV screen then press the yellow button.
“@, 2 OFF :
ee 7
¥ 4 2 ; 5 Press the blue button to select the item you wish to
& eae i change (see below).
5 Sannin
pee eee
ree
Onn 0
6 Press the red or yellow button to alter the selected
item.
7 Press the MENU button to remove the menu
display from the TV screen.
Symbol Item
bb * Mono sound/Stereo sound
A: Channel 1 sound/B: Channel 2 sound
(to select your desired language froma
dual sound broadcast)
DSP ¢ On/Off (digital sound processor)
$ ¢ Treble
wa ° Bass
nA ° Balance
Sy ¢ Reset (resets to factory preset sound level)
[=] * Represents the mode selected in the “Using
Select Mode” section of the manual.

Additional TV Features
Using the Sleep Timer
The TV may be set to switch automatically to the standby mode after a length of time
chosen by you. You may set the time in 15 minute steps up to 4 hours.
1 Press the MENU button on the remote control to
display the menu on the TV screen.
2 Press the blue button on the control to select the ®
symbol on the TV screen, then press the yellow
button.
3 Press the yellow button repeatedly until the
required amount of time delay appears on the
screen.
4 Once the time delay has been selected, press the
MENU button to remove the on-screen display.
One minute before standby, the display shown
appears on the screen.
Notes:
¢ When watching TV, press the (4) button to display
time remaining.
* To return to normal operation from standby mode,
press the |/() button.
"
Additional TV Features
Viewing Teletext
Teletext is an information service transmitted by most TV stations.
Selecting Teletext
1 Press a number button on the remote control to
select the channel which carries the teletext service
you wish to receive.
2 Press the & button on the remote control to switch
on teletext.
3 Input three digits for the page number using the
numbered buttons on the control.
4 Press the © button to switch off teletext.
Note: Teletext errors may occur if the broadcasting
signals are weak.
Using Other Teletext Functions
To Superimpose Teletext on to the TV
Press & once in teletext mode or twice in TV mode to
superimpose teletext on to the TV screen.
[Rirmses |
Press &) again to cancel teletext mode.
To Move to Next or Preceding Page
Press PROGR +/- on the remote control to select the
previous or next page.
To Freeze a Teletext Page
Press & on the control to freeze the page.
Press (¥) again to cancel the freeze.
Revealing concealed information (eg: answers
to a quiz).
Press (2) to reveal information.
Press again to conceal the information.
Using colour buttons to access pages (Fastext)
When the colour coded menu appears at the bottom of
a page, press the colour button (green, red, yellow or
blue) to access the corresponding page.
12
TELETEXT
Pevaime s
fo we

Additional TV Features Additional TV Features
Exchanging
Programme
Positions
Manually
Tuning
the
TV
After
tuning
you
may
wish
to
change
the
order
in
which
the
channels
appear
on
the
You
have
already
tuned
the
TV
to
receive
all
available
channels
using
the
TV.
You
may
wish
for
example
to
exchange
the
channel
on
programme
number
8
Automatically
Tuning
the
TV’
procedure
at
the
start
of
this
manual.
You
can
with
the
channel
on
programme
number
4.
however
carry
out
this
operation
manually
using
the
following
instructions.
1 Press
the MENU
button
on
the
remote control.
|
+3
3
| Pa
1
=
:
1
Press
the
MENU
button
on
the
remote control
to
(
yee
at: |
f
o>
display
the
menu
on
the TV
screen.
ae
®
O
ede
@
|
o 8
28
CETTE
oe
=)
font
CO CO
Co
2
Press the
blue button
on
the
control
to
select
Y
on
C9
2
Press the
blue
button
to select
the
Y”
symbol on
the
TV
screen
then press
the yellow
button.
the
TV
screen,
then press
the
yellow
button.
eS,
; ®@
OO®
te
|
woe
@
O@®®
ry
a
3P
Beblic baton
Widest
Seth
i
BAGG
Ea, 7
3
With the
cursor
pointing
at
PROGR
on
the
TV
|
()
(2)
(®)
ress
the
blue
button to
selec
en
press
the
C$
screen
as
shown,
press
PROGR
+
or
- button
on
the
‘eo
@
yellow
button.
CH 05° Huntin
<>
far
remote
control
to allocate
a
programme
number
to
GD
GED
} z
> :
Cy)
the
channel
(eg
PROGR
01). For
double
digit
a
a
numbers
e.g.
55,
press the
-/-- button
on
the
remote
> Pee
7
control
then
the
corresponding
numbered buttons.
ee
4
Press the
blue
button
to select
the
channel
type
4
With
the
cursor
pointing
at PROGR on
the
TV
ys BROKR Es
(C to preset
a
regular
channel
or
S to
preset
a
cable
a
screen
as
shown,
press
PROGR
+ or
-
button
until
SCTE
channel) then press
the
yellow
button
to
highlight
(+
B
ae
the
channel you
wish to rearrange
appears
on
By
the
desired
channel
type.
:
a
screen, then press the
blue button
once.
s Q
3
:
8
i
Ean
Pg
eee
ean
1
ae
a
eae oe
ve
oz
5
Press
the
blue
button
to select
the
tuning
bar
scale
AM-883
5 Press the
red
or
yellow
button
to
select
the
new PROGR!
=
4”
then press the
yellow
or
red
button
once
to start
the
programme
number
(e.g.
PROGR
04)
for
your
L
lee
channel search.
(Yellow
to search
up the
scale
or
|
selected
channel.
Do)
red
to search
down).
When
a
channel
is
found
it
|
appears
on
the
TV
screen.
6
If
you
do
not
wish to store
this channel
on
the
=
programme
number
you
selected,
press
the
yellow
6
Press the
blue
button
to
select
} then press the
=!
“BROGR<
&
or
red
button
to
continue
searching
for
the
desired
yellow
button
to
exchange
the
channels.
Peers
channel.
D>
ie
‘
7
If this is
the
channel you
wish to
store,
press
the
blue
button
to select
the
4
symbol on
the
screen
then press
the
yellow
button
to store.
7
Repeat
steps
4 to
6 if
you
wish to
change
the
order
of
the other
channels
on
your
TV,
then press
MENU
to
return
to
normal
TV
screen.
8
Repeat steps
3
to 7 if
you
wish to
store more
channels then press the MENU button to remove
the menu from the TV screen.
8 Press the PROGR+/- button to view your selected
channels on their new programme numbers.
13 14

Ol
Additional TV Features
Fine-Tuning Channels
If a channel is slightly off tune, you can use this fine tune procedure to obtain a better
picture reception.
1 With the channel you wish to fine-tune on the
screen, press the MENU button on the remote
control, The menu display appears on the TV
screen.
Os|
® ®
2 Press the blue button on the remote control to
select the ’ symbol on the TV screen then press
the yellow button.
3 Press the blue button to select the «+ symbol on
the TV screen then press the red or yellow button
to adjust the tuning.
eOOCO 0s
OOOO
4 Press the blue button to select the symbol on the
TV screen then press the yellow button to store.
5 Press the MENU button to remove the menu from
the TV screen.
TE
CE pe
CH 05 muuuiuinyt-----
MR
er ‘on
Cag
85
| 15
Optional Connections
Using Optional Equipment
You can connect optional audio or video equipment to your TV, such asa VCR, a
camcorder or video games as shown.
Front of TV
Select and View the Input Signal
1 Connect your equipment to the designated TV socket.
2 Press the €) button repeatedly on your remote control until the
correct input symbol appears on the TV screen.
Symbol Input signals
a1 ¢ Audio/video input signal through the Euro AV
connector
eo) ¢ RGB input signal through the Euro AV
connector
2 ¢ Audio/video input signal through the Euro AV
connector J or the phono sockets [qj and BJ
r=) * S video input signal through the socket EJ.
3 Switch on the connected equipment.
4 To return to normal TV picture, press the ©) button on the remote
control.
S -VHS/Hi8
camcorder
Note: To avoid picture distortion, do not connect equipment to the
i @ or BH connectors at the same time.
Rear of TV
Additional Information
Connecting a VCR
We recommend you tune in the VCR signal to TV programme number °0'
using the ‘Manually Tuning in the TV' section of this instruction manual.
Connecting Headphones
Plug in your headphones to the socket J on the front of the TV set.
Connecting Decoders
Plug in decoders to the socket [J on the rear of the TV.
Connecting to External Audio Equipment
Plug in your Hi-Fi equipment to the J sockets on the rear of the TV if
you wish to amplify the audio output from the TV.