Sony TRINITRON KV-LX34M50 User manual

MODEL COMMANDER DEST. CHASSIS NO.
KV-LX34M50 RM-871 IndonesiaSCC-K67D-A
MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON ® COLOR TV
SERVICE MANUAL BG-1L

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KV-LX34M50
RM-871
SPECIFICATIONS
Note
Power requirements 110-240 VAC, 50/60 Hz
Power consumption (W) Indicated on the rear of TV
Television system B/G, I, D/K, M
Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
Channel coverage
B/G VHF: E2 to E12 / UHF: E21 to E69 /
CATV: S01 to S03, S1 to S41
IUHF: B21 to B68 / CATV: S01 to S03, S1 to S41
D/K VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to R60
CATV: Z1 to Z39, S01 to S03, S1 to S41
MVHF: A2 to A13 / UHF: A14 to A79 /
CATV: A-8 to A-2, A to W+4, W+6 to W+84
Antenna 75-ohm external terminal
Audio output (speaker) 5W + 5W + 15W (3D WOOFER)
Number of terminal
D(Video) Input: 4 Output: 1 Phono jacks; 1 VP-P, 75 ohms
≥(Audio) Input: 4 Output: 1 Phono jacks; 500 mVrms
(S Video) Input: 2 Y : 1 Vp-p, 75 ohms,
unbalanced, sync
negative
C : 0.286 Vp-p, 75 ohms
2(Headphone) Output: 1 Minijack
Picture tube 34 in.
Tube size (cm) 86 Measured diagonally
Screen size (cm) 80 Measured diagonally
Dimension (w/h/d, mm) 950 ×662 ×593
Mass (kg) 77
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK !ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND INTHE
PARTS LIST ARE CRITICALTO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAPTOTHE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.

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KV-LX34M50
RM-871
TABLE OF CONTENTS
Section Title Page
1. GENERAL........................................................... 4
2. DISASSEMBLY
2-1. 3D Speaker Box Removal ....................................... 15
2-2. Rear Cover Removal ............................................... 15
2-3. Speaker Removal ..................................................... 15
2-4. Chassis Assy Removal............................................. 15
2-5. Service Position ....................................................... 16
2-6. P1 Board Removal ................................................... 16
2-7. P2 and S1 Boards Removal ..................................... 16
2-8. B3 and DF Boards Removal .................................... 17
2-9. A and D Boards Removal ........................................ 17
2-10. F1, H5 and K Boards Removal ............................... 17
2-11. DGC Removal.......................................................... 17
2-12. Switch Block Removal ............................................ 18
2-13. Picture Tube Removal ............................................. 18
3. SELF DIAGNOSIS FUNCTION ......................... 20
4. SET-UP ADJUSTMENTS
4-1. Beam Landing.......................................................... 21
4-2. Convergence ............................................................ 22
4-3. Focus Adjustment .................................................... 24
4-4. G2 (Screen) and White Balance Adjustments......... 24
5. CIRCUIT ADJUSTMENT
5-1. Adjustments with Commander ................................ 26
5-2. Adjustment Method ................................................. 27
5-3. Picture Quality Adjustments.................................... 32
5-4. Display Position Adjustment ................................... 32
5-5. A Board Adjustment After IC003 (Memory)
Replacement............................................................. 33
5-6. Picture Distortion Adjustment ................................. 33
Section Title Page
6. DIAGRAMS
6-1. Block Diagram ......................................................... 35
6-2. Frame Schematic Diagram ...................................... 37
6-3 Circuit Boards Location .......................................... 40
6-4. Schematic Diagrams and Printed Wiring Boards ... 40
(1) Schematic Diagrams of D, F1, H5 and H6 Boards . 45
(2) Schematic Diagram of A Board............................... 49
(3) Schematic Diagrams of B3, P1, P2
and VM Boards ........................................................ 57
(4) Schematic Diagrams of C1, DF, K and S1
Boards ...................................................................... 61
6-5. Semiconductors........................................................ 67
7. EXPLODED VIEWS
7-1. Picture Tube ............................................................. 69
7-2. Chassis ..................................................................... 70
7-3. 3D Speaker............................................................... 71
8. ELECTRICAL PARTS LIST............................... 72

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KV-LX34M50
RM-871
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in this manual.
Getting Started
7
123
L (MONO)
R
3
(MONO)
When connecting a monaural VCR
Connect the yellow plug to
D
(VIDEO) and the black plug to
≥ -L (AUDIO-L MONO).
When connecting video game equipment
Connect video game equipment to the …3 (VIDEO 3 INPUT) jacks at the front of your TV or the …(VIDEO IN) 3 jacks at the rear of
your TV.
When connecting a VCR to the (antenna) terminal
Preset the signal output from the VCR to the program position 0.
When connecting video equipment to the …3 (VIDEO 3 INPUT) jacks or the …(VIDEO IN) 3 jacks
Do not connect video equipment to the …3 (VIDEO 3 INPUT) jacks at the front and the …(VIDEO IN) 3 jacks at the rear of your TV
simultaneously; otherwise the picture will not be displayed properly on the screen.
If both S Video and video signals are input simultaneously
The S Video input signal is selected. To view a video input signal, disconnect the (S Video) connection.
Note on the video input
When no signal is input, the screen becomes blue.
Connecting audio/video equipment using Ú(MONITOR/TV OUT) jacks
Front of TV
Camcorder
to S video output
to video and
audio outputs
: Signal flow
Rear of TV
VCR
to
antenna
output
to video and
audio inputs
D
(yellow)
≥
-L (white)
≥
-R (red)
Audio system
to audio
inputs
: Signal flow
to
antenna
socket or
Getting Started
6
123
L (MONO)
R
Connecting a VHF antenna or a combination VHF/UHF antenna
— 75-ohm coaxial cable (round)
Attach an optional IEC antenna connector to the 75-ohm coaxial cable.
Plug the connector into the (antenna) socket at the rear of the TV.
Connecting optional equipment
You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video
game or stereo system.
Connecting video equipment using video input jacks
Connections
On a wall
Rear of TV
Rear of TV
or
Rear of TV
(yellow)
-L (white)
-R (red)
VCR
to
S Video
output
to
antenna
output
to video and
audio outputs
: Signal flow
Getting Started
to
antenna
socket
to
S Video
input

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KV-LX34M50
RM-871
Getting Started
8
Names of buttons on the remote commander are indicated in different colors to represent the available functions.
Label color Button function
White For general TV operations.
Green For Teletext operations. (This is not used for this model)
Yellow For PIP and PROGRAM INDEX operations.
PROGR
MENU
PIP PROGR
GAME
PROGR
INDEX
PIP
TEXT
123
456
78
0
-/--
9
POWER
BASSO
ENTER
A/B
Getting to know the
remote commander
PIP operation buttons
(page 22)
(page 23)
(page 23)
(page 22)
V/v/ENTER
– for PIP PROGR (page 22)
PROGRAM INDEX
operation buttons
PROGR INDEX (page 21)
V/b/v/B/ENTER (page 21)
PROGR +/– (page 21)
GAME (page 27)
Teletext operation buttons
(This is not used for this model)
(page 24, 25)
A/B (page 25)
(page 25)
(page 24)
[] – Red (page 24)
[] – Green (page 24)
[] – Yellow (page 24)
[] – Blue (page 24)
(page 24)
(page 25)
PIP TEXT (page 26)
V/b/v/B/ ENTER (page 26)
POWER BASSO (page 18)
PROGR
MENU
PIP PROGR
GAME
PROGR
INDEX
PIP
TEXT
123
456
78
0
-/--
9
POWER
BASSO
ENTER
A/B
Getting Started
9
Introducing the
menus
You can preset TV channels, adjust the picture and sound qualities, and select some settings using the on-screen
menus. You can use the buttons on both the remote commander and the TV to operate the menus.
A/V CONTROL PIP FEATURES
Getting back to the previous menu
(except for AUTO PROGRAM)
Press Vor vto move the cursor (z) to the first
line (N) of each menu, and press ENTER.
Cancelling the menu screen
Press MENU.
Notes (except for AUTO PROGRAM)
• When a menu is selected after pressing ENTER, the color of
both the menu and the menu symbol change and the cursor
(z) appears beside the first item of the menu.
• When an item on the menu is selected after pressing ENTER,
the color of the item changes.
• You can refer to the guide ( ) at the bottom of the
menus (except for the PRESET menu) for the basic operations
of the menu.
• If more than approximately 60 seconds elapse after you press a
button, the menu screen disappears automatically.
PIP
PIP: OFF
PIP TEXT
STROBE
POS I T I ON:
PROGR I NDEX
PRESET
BASS 80
00
80
TREBLE
BALANCE
AUDI O ADJUST
PRESET
SKIP:
PR02 OFF
TV SYS: B/G
COL
SYS : AUTO
ENGL I SH
AUTO PROGRAM
MANUAL PROGRAM
LANGUAGE / :
P I CTURE
40
100
0
80
V I DEO ADJ UST
COLOR
BR I GHT
HUE
SHARP
VM: HIGH
45
0
TV SYS: B/G
AUTO PROGRAM
VHF LO
W
PR: 01
TV SYS: B/G
VHF
LO W
PR: 01
AT T : OFF
MANUAL PROGRAM
GAME MODE
HYPER SURROUND :
OFF
MONITOR
AV OUT :
FEATURES
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO ADJUST
AUDI O ADJUST
*
( This is not used for this model)
*

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KV-LX34M50
RM-871
10
Getting Started
Changing the menu
language
pKV-LX34M31
If you prefer Chinese to English, you can change the
menu language. You can use buttons on both the
remote commander and the TV.
1 Press Uto turn on the TV.
2 Press MENU.
3 Press Vor vto move the cursor (”) to the
PRESET menu ( ), and press ENTER.
MENU
ENTER
4
Make sure the cursor (
” ) appears beside
LANGUAGE/ , and press ENTER.
5 Press V/b/v/Bto select , and press ENTER.
All of the menus change to Chinese.
6 Press MENU to return to the normal screen.
PRESET
SKIP: PR02 OFF
TV SYS: B /G
COL SYS : AUTO
ENGL I SH
AUTO PROGRAM
MANUAL PROGRAM
LANGUAGE / :
ENTER ENTER
ENTER MENU AUTO
PROGR
ONE PUSH AUTOMATIC PROGRAMMING
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
MENU
„w‡]
‚ı¶V W „D¡GPR02 ˆ
„q ł¤t†˛¡GB/G
–mƒ ¤ ƒ¡¡Gƒ ˚
⁄⁄⁄
ƒ˚‰¥x
⁄˚‰¥x
»y¤¥/ LANGUAGE :
ENTER ENTER
Getting Started
11
You can preset TV channels easily by storing all the
receivable channels automatically. You can also preset
channels manually or disable program positions (see
page 12 ).
Presetting channels automatically
You can preset up to 100 TV channels in numerical
sequence from the program position 1. You can preset
channels automatically using the button on the TV or
the menu.
1 Press Uto turn on the TV.
2
Press AUTO PROGR.
The TV starts scanning and presetting channels
automatically. When all of the receivable channels
are stored, the AUTO PROGRAM menu disappears
and the first nine preset TV programs appear on
the nine sub screens. The nine sub screens
disappear after being displayed for several seconds.
Presetting channels
Note
• If you want to return to the normal screen while the nine sub
screens are being displayed, you can press PROGR INDEX on
the remote commander.
To preset channels automatically using
the menu
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
PRESET menu ( ), and press ENTER.
3 Press Vor vto move the cursor (z) to AUTO
PROGRAM, and press ENTER.
Presetting channels manually
To change the program position for a channel or to
receive a channel with a weak signal which you cannot
receive by automatic presetting, preset the channel
manually.
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
PRESET menu ( ), and press ENTER.
3 Select your local TV system.
(1) Press Vor vto move the cursor (z) to TV SYS, and
press ENTER.
(2) Press V/b/v/Buntil your local TV system appears
on the menu, and press ENTER.
MENU
ENTER
PRESET
SKIP: PR02 OFF
TV SYS: B /G
COL SYS : AUTO
ENGL I SH
AUTO PROGRAM
MANUAL PROGRAM
LANGUAGE / :
ENTER ENTER
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
ENTER MENU AUTO
PROGR
ONE PUSH AUTOMATIC PROGRAMMING
TV SYS:B/G
AUTO PROGRAM
VHF LO
W
PR: 0 1
123
456
789
AUTO
PROGR

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KV-LX34M50
RM-871
Getting Started
12
Disabling program positions
By disabling unused or unwanted program positions,
you can skip those positions when you press PROGR
+/–.
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
PRESET menu ( ), and press ENTER.
3 Press Vor vto move the cursor (z) to SKIP,
and press ENTER.
4 Press Vor vuntil the unused or unwanted
program position appears on the menu,
and press ENTER.
5 Press V/b/v/Bto select ON, and press ENTER.
6 To disable other program positions, repeat
steps 4 and 5.
7
Press MENU to return to the normal screen.
To cancel the skip setting
1Display the PRESET menu.
2Press Vor vto move the cursor (z) to SKIP, and
press ENTER.
3Press Vor vuntil the program position you want to
cancel the skip setting appears, and press ENTER.
4Press V/b/v/Bto select OFF, and press ENTER.
4 Press Vor vto move the cursor (z) to
MANUAL PROGRAM, and press ENTER.
5
Select the program position to which you
want to preset a channel.
(1) Make sure the cursor (z) appears beside PR, and
press ENTER.
(2) Press V/b/v/Buntil the program position you
want appears on the menu, and press ENTER.
6 Select the desired channel.
(1) Press Vor vto move the cursor (z) to VHF LOW,
and press ENTER.
(2) Press V/b/v/Buntil the desired channel picture
appears on the TV screen, and press ENTER.
7
Press MENU to return to the normal screen.
If the TV signal is too strong
The picture may be distorted. You can reduce the
picture distortion as described below.
1Display the PRESET menu.
2Press Vor vto move the cursor (z) to MANUAL
PROGRAM, and press ENTER.
3Press Vor vto move the cursor (z) to ATT, and
press ENTER.
4Press V/b/v/Bto select ON, and press ENTER.
If the TV system is not properly selected
The picture color may be poor and/or the sound may
be noisy. In this case, select the appropriate TV system.
1Press PROGR +/– or the number buttons to select
the program position.
2Display the PRESET menu.
3Press Vor vto move the cursor (z) to TV SYS, and
press ENTER.
4Press V/b/v/Buntil the appropriate TV system
appears, and press ENTER.
Notes
• The TV system and the ATT (attenuator) settings are
memorized for each program position.
• If you do not know your local TV system, consult your nearest
Sony dealer or authorized service center.
TV SYS:B/G
VHF
LO W
PR: 0 1
AT T : OFF
MANUAL PROGRAM
ENTER ENTER
Operations
13
Watching the TV
To scan through program positions
Press PROGR +/– on the remote commander or the
TV until the program position you want appears.
3
Press Á+/– on the remote commander or
the TV to adjust the volume.
Turning off the TV
To turn off the TV temporarily
Press uon the remote commander or the TV. The u
indicator lights up.
To turn off the TV completely
Press Uon the TV.
Watching the video input
Press …on the remote commander or …on
the TV.
1 Press Uto turn on the TV.
When the TV is turned on in the standby mode, the
uindicator on the TV lights up. To turn on the TV
completely, press uon the remote commander or
the TV. When the TV is turned on completely, the
PROGR +/–, Á+/–, and …indicators on the TV
light up.
2 Select the TV program you want to watch.
To select a program position directly
Press the number button.
To select a two-digit program position, press “÷”
before the number buttons.
For example: to select program position 25, press
“÷,” then “2” and “5.”
PROGR
2
-/--
5
VIDEO 1 VIDEO 2 VIDEO 3 1
Operations
123
456
78
0
-/--
9
/O
FREEZE SWAP PIP
PROGR

– 8 –
KV-LX34M50
RM-871
Operations
14
To watch TV
Press ;on the remote commander or …on the TV.
Switching back quickly to the previous
channel
Press JUMP.
Muting the sound
Press ¤.
Displaying the on-screen information
Press .
Note
• The on-screen display shows the program position or the video
mode, the picture and sound information. The on-screen
display for the picture and sound information disappears after
being displayed for approximately three seconds.
Setting the Wake Up Timer
You can set the TV to turn on automatically after the
period of time you want.
1
Press repeatedly to set the timer.
The on-screen display appears.
2 If you want a particular TV program or
video mode to be displayed using the Wake
Up Timer, select the TV program or video
mode.
3 Press uon the remote commander or the
TV, or set the Sleep Timer to turn off the TV
in the standby mode.
The indicator lights up in amber color.
To cancel the Wake Up Timer, press repeatedly
until “WAKE UP TIMER: OFF” appears, or turn off the
main power of the TV.
Notes
• The Wake Up Timer starts immediately after the on-screen
display disappears.
• The last TV program position or video mode just before the TV
turns into the standby mode will appear when the TV is turned
on using the Wake Up Timer.
• 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 turns into the standby mode. If you want to
continue watching the TV, press any button or control on the
TV or remote commander.
MUTING
After 10 minutes
After 12 hours
No Wake Up Timer
POWER BASSO: ON
DYNAMIC
8
WAKE UP TIMER:10M
WAKE UP TIMER:OFF WAKE UP TIMER:12H00M
Operations
15
Setting the Sleep Timer
You can set the TV to turn off automatically after the
period of time you want.
Press .
To cancel the Sleep Timer, press repeatedly until
“SLEEP TIMER: OFF” appears, or turn the TV off.
After 30 minutes After 60 minutes
No Sleep Timer After 90 minutes
SLEEP TIMER:30M SLEEP TIMER:60M
SLEEP TIMER:OFF SLEEP TIMER:90M

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KV-LX34M50
RM-871
Operations
16
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
Selecting the picture and sound modes
1 Press MENU.
2 Make sure the cursor (”) appears in the A/V
CONTROL menu ( ), and press ENTER.
3
Press Vor vto move the cursor (”) to
DYNAMIC, STANDARD, SOFT, or PERSONAL,
and press ENTER.
Select To
DYNAMIC Receive high contrast picture with
powerful sound.
STANDARD Receive normal contrast picture with
medium listening sound.
SOFT Receive mild picture with soft sound.
PERSONAL Receive the last picture and sound
settings that are adjusted using VIDEO
ADJUST and AUDIO ADJUST.
4 Press MENU to return to the normal screen.
Adjusting the
picture and sound
MENU
ENTER
ENTER ENTER
MENU
Press V/b
Increase picture
contrast.
Increase color
intensity.
Brighten the picture.
Make picture tones
become greenish.
Sharpen the picture.
Increase emphasis on
picture edges.
Adjusting the picture settings
(VIDEO ADJUST)
You can adjust the picture settings to suit your taste
with the VIDEO ADJUST option. The adjusted settings
are stored in the PERSONAL option.
1 Press MENU.
2 Make sure the cursor (”) appears in the A/V
CONTROL menu ( ), and press ENTER.
3 Press Vor vto move the cursor (”) to VIDEO
ADJUST, and press ENTER.
4 Press Vor vto move the cursor (”) to the
item you want to adjust, and press ENTER.
5 Press V/b/v/Bto adjust the selected item,
and press ENTER.
For details on each item, see “Description of adjustable
items” below.
6 To adjust other items, repeat steps 4 and 5.
7
Press MENU to return to the normal screen.
Description of adjustable items
Item Press v/B
PICTURE Decrease picture
contrast.
COLOR Decrease color
intensity.
BRIGHT Darken the picture.
HUE Make picture tones
become reddish.
SHARP Soften the picture.
VM Decrease emphasis
on picture edges.
Note
• You can adjust HUE for the NTSC system only.
P I CT URE
40
100
0
80
V I DEO AD JUST
COLOR
BR I GHT
HUE
SHARP
VM: HIGH
45
0
ENTER ENTER
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
Operations
17
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
Press V/b
Increase the bass
sound.
Increase the treble
sound.
Increase the right
speaker's volume.
If the picture is slightly snowy
You may try to improve the picture by changing the
VM setting as described below:
1Display the VIDEO ADJUST menu.
2Press Vor vto move the cursor (”) to VM, and
press ENTER.
3Press V/b/v/Bto select LOW, and press ENTER.
If the picture color is abnormal when receiving
programs through the ˘(antenna) terminal
Change the color system or the TV system from the
PRESET menu as described below until the color
becomes normal.
1Display the PRESET menu.
2Press Vor vto move the cursor (”) to
COL SYS or TV SYS, and press ENTER.
3Press V/b/v/Bto change the color system or the
TV system until the color becomes normal, and
press ENTER.
Note
• Normally set the color system (COL SYS) to AUTO.
Adjusting the sound settings
(AUDIO ADJUST)
You can adjust the sound settings to suit your taste
with the AUDIO ADJUST option. The adjusted settings
are stored in the PERSONAL option.
1 Press MENU.
2 Make sure the cursor (”) appears in the A/V
CONTROL menu ( ), and press ENTER.
3 Press Vor vto move the cursor (”) to
AUDIO ADJUST, and press ENTER.
4 Press Vor vto move the cursor (”) to the
item you want to adjust, and press ENTER.
5 Press V/b/v/Bto adjust the selected item,
and press ENTER.
For details on each item, see “Description of adjustable
items” below.
6
To adjust other items, repeat steps 4 and 5.
7
Press MENU to return to the normal screen.
Description of adjustable items
Item Press v/B
BASS Decrease the bass
sound.
TREBLE Decrease the treble
sound.
BALANCE Increase the left
speaker's volume
If the sound is distorted or noisy when
receiving programs through the (antenna)
terminal
Change the TV system from the PRESET menu as
described below until the sound becomes normal.
1Display the PRESET menu.
2Press Vor vto move the cursor (”) to TV SYS, and
press ENTER.
3Press V/b/v/Bto change the TV system until the
sound becomes normal, and press ENTER.
BASS 80
00
80
TREBLE
BALANCE
AUDIO ADJUST
ENTER ENTER

– 10 –
KV-LX34M50
RM-871
Operations
18
Listening to the
POWER BASSO
sound
The POWER BASSO sound enables you to enjoy a high
quality sound mode with the best combination of all
types of sound. It reproduces dynamic and clear
sounds and emphasizes low and high audio effects as
well.
Press POWER BASSO.
The sound mode of the TV program or the video input
changes to the POWER BASSO sound.
To restore the previous sound mode
Press POWER BASSO again.
Note
• You can select any of the surround sound modes (HYPER
SURROUND) to cancel the POWER BASSO sound.
POWER
BASSO
POWER BASSO: ON
Operations
19
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
Description of adjustable items
Select To
MOVIE Listen to a sound that emphasizes the bass
audio effect of movie theater.
MUSIC Listen to a dynamic and clear sound that
emphasizes the low and high audio effect.
NEWS〈BBE〉Listen to a sound that emphasizes voice.
HALL〈SRS〉Listen to a sound that spreads out over a
large area, giving the feeling of being at a
concert hall.
SPACE Listen to a monaural sound that gives a
stereo-like effect.
OFF Turn off the surround sound.
Notes
• The BBE is manufactured by Sony Corporation under license
from BBE Sound, Inc. It is covered by U.S. Patent No. 4,638,258
and No. 4,482,866. The word “BBE” and the BBE symbol are
the trademarks of BBE Sound, Inc.
• The (r)® SRS (SOUND RETRIEVAL SYSTEM) is
manufactured by Sony Corporation under license from SRS
Labs, Inc. It is covered by U.S. Patent No. 4,748,669.
The word “SRS” and the SRS symbol (r) are registered
trademarks of SRS Labs, Inc.
Listening to the
surround sound
(HYPER SURROUND)
MENU
ENTER
GAME MODE
HYPER SURROUND:
OFF
MONITOR
AV OUT :
FEAT URES
ENTER ENTER
The HYPER SURROUND feature enables you to enjoy
a surround sound effect that is like being in a concert
hall or movie theater when receiving stereo signals.
1 Press MENU.
2
Press Vor vto move the cursor (z) to the
FEATURES MENU ( ) , and press ENTER.
3 Press Vor vto move the cursor (z) to
HYPER SURROUND, and press ENTER.
4 Press V/b/v/Bto select MOVIE, MUSIC,
NEWS〈BBE〉, HALL〈SRS〉or SPACE, and press
ENTER.
nMOVIE nMUSIC nNEWS〈BBE〉
OFF NSPACE NHALL〈SRS〉N
For details on each item, see “Description of adjustable
items“ below.
5 Press MENU to return to the normal screen.

– 11 –
KV-LX34M50
RM-871
Operations
21
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
To restore the normal screen
Press PROGR INDEX again or .
You can also select PROGR INDEX or PIP : OFF from
the PIP menu, and press ENTER to restore the normal
screen.
To view multiple programs on the nine sub
screens using the menu
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
PIP menu ( ), and press ENTER.
3
Make sure the cursor (z) appears beside
PROGR INDEX, and press ENTER.
Notes
•You can change the position of the nine sub screens using the
PIP menu (as described in “Changing the position of the PIP
screen” on page 23).
•You can hear the sound of the main screen when viewing
multiple programs on the nine sub screens.
•You can use the number buttons on the remote commander to
change the program position of the main screen when viewing
multiple programs on the nine sub screens.
Viewing multiple
programs at the
same time
(PROGRAM INDEX)
The PROGRAM INDEX feature allows you to view all
the preset TV programs and the video inputs on the
nine sub screens within the main screen at the same
time.
You can view multiple programs on the nine sub
screens using the button on the remote commander or
the menu.
Press PROGR INDEX.
The first nine preset programs appear on the nine sub
screens.
To view the next or the previous nine preset
programs on the nine sub screens
Press PROGR +/– on the remote commander or the TV.
To select the program you want to watch
directly after viewing multiple programs on
the nine sub screens
Press the number buttons, …, or press
V/b/v/Bto move the cursor (>>>) that appears on the
first screen to the screen of the program you want to
watch, and press ENTER.
PROGR
INDEX
123
456
789
>>>
123
456
789
10 11 12
V1 V2 V3
123
>>> >>>
PIP
PIP: OFF
STROBE
POS I T I ON:
PROGR I NDEX
ENTER ENTER
Operations
22
With the Picture-in-Picture (PIP) feature, you can
display a sub screen within the main picture of
different TV programs or video inputs.
Displaying the PIP screen
You can display the PIP screen using the button on the
remote commander or the menu.
Press .
Selecting a TV program or video input in the
PIP screen
To select a TV program, press Vor v, and press
ENTER.
To select a video input, press on the remote
commander or …on the TV.
To display the PIP screen using the menu
1 Press MENU.
2 Press Vor vto move the cursor (”) to the
PIP menu ( ), and press ENTER.
3 Press Vor vto move the cursor (”) to PIP,
and press ENTER.
4
Press V/b/v/Bto select ON, and press ENTER.
5 Press MENU to return to the normal screen.
Using the Picture-in-
Picture (PIP)
features
Displaying frame-
by-frame pictures
(STROBE)
You can watch a slow motion movement of the main
screen picture which is displayed frame-by-frame on
the nine sub screens within the main screen.
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
PIP menu ( ), and press ENTER.
3 Press Vor vto move the cursor (z) to
STROBE, and press ENTER.
To restore the normal screen
Select STROBE again or PIP : OFF from the PIP menu,
and press ENTER.
You can also press ;, …, PROGR +/–, or to
restore the normal screen.
Notes
• You can change the position of the nine sub screens using the
PIP menu (as described in "Changing the position of the PIP
screen" on page 23).
• You can hear the normal sound when using the STROBE
feature.
MENU
ENTER
PIP
PIP: OFF
STROBE
POS I T I ON:
PROGR I NDEX
ENTER ENTER
;
…
V/v/ENTER
123
456
78
0
9
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU

– 12 –
KV-LX34M50
RM-871
Operations
23
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
Swapping pictures between the main
and PIP screens
Press .
Freezing the PIP screen
Press .
The PIP screen will freeze.
To restore the normal screen
Press again.
Notes
• When you display a video input on the PIP screen at an
abnormal speed, the picture may be noisy depending on the
VCR.
• If you display different color systems on the main screen and
the PIP screen, the size of the PIP screen may be different and
the PIP picture may be noisy. This does not indicate a
malfunction of the TV.
Changing the position of the PIP screen
1 Press MENU.
2 Press Vor vto move the cursor (”) to the
PIP menu ( ), and press ENTER.
3 Press Vor vto move the cursor (z) to
POSITION, and press ENTER.
4 Press V/b/v/Bto select the position you
want, and press ENTER.
5
Press MENU to return to the normal screen.
PIP
PIP: OFF
STROBE
POS I T I ON:
PROGR I NDEX
ENTER ENTER
MENU
ENTER
Operations
27
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
To restore the normal picture and sound
modes
Press ;, …, or PROGR +/–.
Notes
• If you press the GAME button when the TV is in the standby
mode, the TV turns on automatically and the picture and
sound change to the mode that is suitable for a video game.
•To display a video game screen, connect the video game
equipment to the …3 (VIDEO 3 INPUT) jacks at the front of
the TV or the …(VIDEO IN) 3 jacks at the rear of the TV.
The GAME MODE feature enables you to view a video
game screen in the optimum mode that gives soft
picture and dynamic sound effect.
You can display a video game screen using the button
on the remote commander or the menu.
Press GAME.
The picture and sound change to the mode that is
suitable for a video game.
To view a video game screen using the menu
1 Press MENU.
2 Press Vor vto move the cursor (z) to the
FEATURES menu ( ), and press ENTER.
3 Make sure the cursor (z) appears beside
GAME MODE, and press ENTER.
Viewing a video
game screen
(GAME MODE)
GAME
GAME
GAME MODE
HYPER SURROUND:
OFF
MONITOR
AV OUT :
FEATURES
ENTER ENTER

– 13 –
KV-LX34M50
RM-871
Operations
28
Customizing the TV
Using the AV OUT (advanced rec-out)
terminal
You can select the output signal from the Ú
(MONITOR/TV OUT) jacks at the rear of the TV.
However, the signals of the PROGRAM INDEX,
STROBE, PIP modes cannot be output even though
MONITOR is selected.
1
Press MENU.
2 Press Vor vto move the cursor (z) to the
FEATURES menu ( ), and press ENTER.
3
Press Vor vto move the cursor (z) to AV
OUT, and press ENTER.
4 Press V/b/v/Bto select the output signal,
and press ENTER.
Select To
TV Output the signal of the TV broadcast.
MONITOR Output the signal of the picture you are
watching as a main picture.
Note
• Do not change the channel while recording with a VCR
through the Ú(MONITOR/TV OUT) jacks. If you change the
channel, it also changes the channel you are recording.
A / V CONT ROL
DYNAMIC
SOFT
STANDARD
PERSONAL
V I DEO AD JUST
AUDIO ADJUST
MENU
GAME MODE
HYPER SURROUND:
OFF
MONITOR
AV OUT :
FEAT URES
ENTER ENTER
Operations
29
Troubleshooting
Good picture
Noisy sound
/Check the TV system (TV SYS) setting.
No picture
No sound
/Press u.
/Press Uto turn off the TV for about five
seconds and then turn it on again.
/Check the power cord connection.
/Check the antenna connection.
/Check the VCR connections.
Good picture
No sound
/Press Á+.
/Press ¤.
No color
/Adjust the COLOR level in the VIDEO
ADJUST menu of the PERSONAL option.
/Check the color system (COL SYS) setting.
TV cabinet creaks
/Even if the picture or the sound is normal,
changes in the room temperature
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
Additional Information
If you have any problems, read this manual again and
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest Sony
dealer or authorized service center.
Snowy picture
Noisy sound
/Check the antenna.
/Check the antenna connection on the TV
and on the wall.
/Check the TV system (TV SYS) setting.
/Check the ATT (attenuator) setting.
Dotted lines or stripes
/This may be caused by local interference
(e.g. cars, neon signs, hair dryers, etc.).
Adjust the antenna for minimum
interference.
Double images or “ghosts”
/This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the
picture.
Additional Information

– 14 –
KV-LX34M50
RM-871
Getting Started
5
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only at 110-240 V AC.
• Do not open the cabinet and the rear cover of the TV.
Refer servicing to qualified personnel.
• 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 block the ventilation openings.
• Do not install the appliance in a confined space, such
as a bookcase or built-in cabinet.
• Do not install the TV in hot, humid or excessively
dusty places.
• Do not install the TV where it may be exposed to
mechanical vibrations.
• Do not keep the TV plugged in if you are not going to
use it for several days.
• Do not pull the power cord to disconnect the TV. Pull
it out by the plug.
• Use only the supplied screws (as shown on page 2) to
fasten the TV to the TV stand or to stabilize the TV
against a wall or a pillar. Use of other screws may
damage the TV.
Note on the remote commander
• The supplied remote commander is used on several models of
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. .
Notes
• When you turn on the TV, you may hear the “boon” sound
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
• The picture color may become abnormal if you change the
direction of your TV. To obtain the normal picture color, press
Uor uon the TV to turn off the TV for five minutes and then
turn it on again.

– 15 –
KV-LX34M50
RM-871
SECTION 2
DISASSEMBLY
2-1. 3D SPEAKER BOX REMOVAL
Note: Remove 3D SPEAKER BOX before you remove REAR COVER. 2-3. SPEAKER REMOVAL
2-2. REAR COVER REMOVAL
3Connector
23D speaker box
1Three screws (step hilo tapping)
2-4. CHASSIS ASSY REMOVAL
Two screws (washer head)
(+BVTP 4 ×16)
Speaker brock assy 1
2
Three screws
(+BVTP 4 ×16)
1
Ten screws
(+BVTP 4 ×16)
2
Chassis assy
Two claws
2
1

– 16 –
KV-LX34M50
RM-871
2-5. SERVICE POSITION 2-6. P1 BOARD REMOVAL
2-7. P2 AND S1 BOARDS REMOVAL
One screw (washer head)
(+P 3 ×12)
1
PC board holder
2
Main bracket assy
3
3PCB holder
P1 Board
5
2One claw
P1 Board
Extension Board
(3-702-715-01)
•Prepare the above extension board
(3-702-715-01) for measurement.
1Screw (Washer head) (+P 3×12)
1S1 Board
3P2 Board
2P-P Cable
S1 Board
Extension Board
(3-702-716-01)
•Prepare the above extension board
(3-702-716-01) for adjustment.

– 17 –
KV-LX34M50
RM-871
2-8. B3 AND DF BOARDS REMOVAL 2-10. H5 AND K BOARDS REMOVAL
1B3 board
2DF board
2-9. A AND D BOARDS REMOVAL
2Five screws (+BVTP 3×12)
4A Board
3Three claws
5Four screws
(+BVTP 3×12)
1Four connectors
7D Board
6Four claws
$Two claws
%K board
#One connector
7One connector
1Two connectors
"Three connectors
5Three connectors
9Screw (+BVTP 3 ×12)
!H5 board
3F1 board
8Two claws
2Two claws
4Two flat cable
6Two connectors
2-11. DGC REMOVAL
5DGC 3Seven clamps
1Four nuts
2CRT shield
4Seven clamps
6DGC
9H6 board
8H6 blacket
7Claw

– 18 –
KV-LX34M50
RM-871
2-12. SWITCH BLOCK REMOVAL 2-13. PICTURE TUBE REMOVAL
2Holder panel
1Loosen screw (+BV 3 ×25)
3Switch block top
6Two nuts (special CRT)
8C1 board
9Neck assy
!Deflection yoke
4Anode cap
Two screws
(waher head +P4 ×16)
2Speaker block assy (L)
"Picture tube
Cushion 2Speaker block assy (R)
3H6 block assy
Two screws
(washer head +P 4 ×16)
6Two nuts (special CRT)
5Chassis assy
7DGC with CRT shield
1
1

– 19 –
KV-LX34M50
RM-871
1Turn up one side of the rubber cap in the direction indicated by the arrow a.
2Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.
3When one side of the rubber cap is separated from the anode button, the anode-cap
can be removed by turning up the rubber cap and pulling it up in the direction of the
arrow c.
•REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short circuit the anode of the picture tube and the
anode cap to the metal chassis, CRT shield or carbon paint on the CRT.
•REMOVING PROCEDURES
•HOW TO HANDLE AN ANODE-CAP
1Do not damage the surface of anode-caps with sharp shaped objects.
2Do not press the rubber too hard so as not to damage the inside of anode-caps.
A metal fitting called the shatter-hook terminal is built into the rubber.
3Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the rubber.
a
a
b
b
c
Anode button

– 20 –
KV-LX34M50
RM-871 SECTION 3
SELF DIAGNOSIS FUNCTION
When turning on the TV, a self diagnosis function is executed.
If no acknowledgement is returned from a device which is turned "ON", the device has a problem.
In this case, one of the LED's responding to the problem device will flicker a defined number of times.
The flickering frequency responding to each failed device is shown below.
Board name
Ref. No.
Device
Flickering Frequency
All the devices are checked one after another from the left of the table.
If an error is found, the responding LED will start flickering.
So, if more than 1 device has failed, only the one on the left side will flicker.
A Board
IC206
SURROUND
PROCESSOR
(TDA8424)
6
A Board
IC003
NONVOLATILE
MEMORY
1
A Board
IC104
MAIN Y/C
(CXA2050S)
3
A Board
IC1201
AV SWITCH
(CXA1855S)
2