Sony KV-XA21M93 User manual

MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON ® COLOR TV
SERVICE MANUAL BG-3R
MODEL COMMANDER DEST. CHASSIS NO.
KV-XA21M93 RM-952 Hong Kong SCC-U50A-A
TV
123
46
789
÷0
5
JUMP
SOUND
MODE
FAVORITE
PROGRÁ

–2 –
KV-XA21M93
RM-952
SPECIFICATIONS
Note
Power requirements 220-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G, I, D/K, M
Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
Stereo/Bilingual system NICAM Stereo / Bilingual B/G, I; A2 Stereo Bilingual (German) B/G
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: S01 to S03, S1 to S41, Z1 to Z39
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 (TWEETER supplied) 10% distortion
Number of terminal
D(Video) Input: 2* Output: 1 Phono jacks; 1 VP-P, 75 ohms
≥(Audio) Input: 2* Output: 1 Phono jacks; 500 mVrms
2(Headphones) Output: 1 minijack
Picture tube 21 inch
Tube size (cm) 54 Measured diagonally
Screen size (cm) 51 Measured diagonally
Dimension (w/h/d, mm) 640 x 456 x 498
Mass (kg) 26
Design and specifications are subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK !ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
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.

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KV-XA21M93
RM-952
TABLE OF CONTENTS
Section Title Page
SELF DIAGNOSIS FUNCTION ................................ 4
1. GENERAL ........................................................................ 7
2. DISASSEMBLY
2-1. Rear Cover Removal ................................................ 20
2-2. Speaker Removal ..................................................... 20
2-3. Chassis Assy Removal ............................................. 20
2-4. F Bracket Removal .................................................. 20
2-5. J2 Board and Terminal Bracket Removal................ 20
2-6. Service Position ....................................................... 20
2-7. Replacement of Parts ............................................... 21
2-7-1 Replacement of Light Guide .............................................. 21
2-7-2 Replacement of Power Button ........................................... 21
2-8. Picture Tube Removal .............................................. 21
3. SET-UP ADJUSTMENTS
3-1. Beam Landing .......................................................... 23
3-2. Convergence Adjustment ......................................... 24
3-3. Focus Adjustment .................................................... 26
3-4. G2 (Screen) and White Balance Adjustments ......... 27
4. CIRCUIT ADJUSTMENTS
4-1. Adjustments with Commander ................................ 28
4-2. Adjustment Method ................................................. 28
4-3. Picture Quality Adjustments .................................... 33
4-4. Deflection Adjustment ............................................. 33
4-5. A Board Adjustment After IC003
(memory) Replacement ........................................... 33
4-6. Picture Distortion Adjustment ................................. 34
Section Title Page
5. DIAGRAMS
5-1. Block Diagram .......................................................... 35
5-2. Circuit Board Location ............................................. 37
5-3. Schematic Diagrams ................................................. 38
(1) Schematic Diagrams of F, J2 and C1 Boards ..... 39
(2) Schematic Diagram of A Board .......................... 41
5-4. Voltage Measurements .............................................. 57
5-5. Waveforms ................................................................ 60
5-6. Printed Wiring Boards and Parts Location ............... 61
5-7. Semiconductors ......................................................... 65
6. EXPLODED VIEWS
6-1. Picture Tube .............................................................. 67
6-2. Chassis ...................................................................... 68
7. ELECTRICAL PARTS LIST...................................... 69

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KV-XA21M93
RM-952
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically
begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER
lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot
be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past
problems and how often these problems occur.
1. DIAGNOSTIC TEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.
Diagnostic
Item
Description
•Power does not
turn on
•+B overcurrent
(OCP) or
overvoltage
(OVP)
•Vertical deflection
stopped
•Horizontal
deflection
overdrive
•White balance
failure (no
PICTURE)
•Micro reset
Detected
Symptoms
•Power does not come on.
•No power is supplied to the
TV.
•AC power supply is faulty.
•Power does not come on.
•Load on power line is
shorted.
•Has entered standby state
after horizontal raster.
•Vertical deflection pulse is
stopped.
•Power line is shorted or
power supply is stopped.
•No raster is generated.
•CRT cathode current
detection reference pulse
output is small.
•Power is shut down shortly,
after this return back to
normal.
•Detect Micro latch up.
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
* IC700 out is faulty (C1 board).
SELF DIAGNOSTIC FUNCTION
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
—
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
101:00 or
101:001~225
Probable
Cause
Location
•Power cord is not plugged
in.
•Fuse is burned out F4601
(F)
•H.OUT Q511 is shorted. (A
board)
•IC700 is shorted (C1 board)
•-13V is not supplied. (A
board)
•IC 503 faulty (A board)
•G2 is improperly adjusted.
(Note 2)
•CRT problem.
•IC700 out is faulty
(C1 board)
•IC301 is faulty. (A board)
•No connection A board to
C1 board.
•Discharge CRT (C1 Board)
•Static discharge
•External noise

–5 –
KV-XA21M93
RM-952
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp
from flashing.
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off”or “screen sometimes goes out”that cannot be confirmed, it
is possible to bring up past occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screendisplay] /channel [5] /Sound volume [-] /Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
STANDBY/SLEEP lamp
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
3 times
Diagnostic Item Flash Count*
+B overcurrent/overvoltage 2 times
Vertical deflection stopped
White balance failure 5 times
* One flash count is not used for self-diagnostic.
002 : 000
003 : 000
004 : 000
005 : 001
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
101 : 000
SELF DIAGNOSTIC

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KV-XA21M93
RM-952
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after
completion of the repairs.
[Clearing the result display]
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic
screen is being displayed.
Channel [8] /0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIAGNOSTIC CIRCUIT
[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON
and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001
shut down the power supply.
[Verticaldeflectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be
shut down when detect this by IC001.
[ hitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error will be
detected by IC301. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
IC301
Y/CHROMA JUNGLE
FROM
CRT
[V] Q509/507
IC001
SYSTEM
IC003
MEMORY
IK-IN
MP/
PROTECT O-LED
IO-8DAT B-DAT
IO-SDAT
521
18 51
46
SDA 35
FROM
[+B] Q604 C6
45

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KV-XA21M93
RM-952
SECTION 1
GENERAL
2
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only between 110 – 240 V AC. (For Hong Kong only: 220 – 240 V AC).
To prevent fire or shock hazard, do not expose
the TV to rain or moisture.
Do not operate the TV if any liquid or solid object
falls into it. Have it checked immediately by
qualified personnel only.
Do not open the cabinet and the rear cover of the
TV as high voltages and other hazards are
present inside the TV. Refer servicing and
disposal of the TV to qualified personnel.
Your TV is recommended for home use only.
Do not use the TV in any vehicle or where it may
be subject to excessive dust, heat, moisture or
vibrations.
Do not block the ventilation openings of the TV.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
For children’s safety, do not leave children alone
with the TV. Do not allow children to climb onto
it.
Do not plug in too many appliances to the same
power socket. Do not damage the power cord.
Clean the TV with a dry and soft cloth.
Do not use benzine, thinner, or any other chemicals
to clean the TV. Do not scratch the picture tube.
For your own safety, do not touch any part of the
TV, the power cord and the antenna cable during
lightning storms.
Pull the power cord out by the plug. Do not pull
the power cord itself. Disconnect the TV before
moving it or if you are not going to use it for
several days.
3
GB
Using Your New TV
Do not install the TV in an unstable position.
Use a proper TV stand. Do not place any objects on the TV.
WARNING (continued)
The operating instruction mentioned here are partial abstracts
from the Operating Instruction Manual.The page numbers of
the Operating Instruction Manual remain as in the manual.

–8 –
KV-XA21M93
RM-952
Using Your New TV
5
Using Your New TV
Step 2
Note
•Do not use old batteries nor use different types of batteries together.
Front of TV
Notes
•If you connect a monaural VCR, connect the yellow plug to (the
yellow jack) and the black plug to -L (MONO) (the white jack).
•If you connect a VCR to the 8(antenna) terminal, preset the signal
output from the VCR to the program number 0 on the TV.
•When no signal is input from the connected video equipment, the TV
screen becomes blue.
(Not used for this model)
•Do not connect video equipment to the t2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
CAUTION
•Do not connect the power cord until you have completed making all other
connections; otherwise a minimum leakage current might flow through
the antenna and other terminals to ground.
•To avoid battery leakage and damage to the remote, remove the batteries
from the remote if you are not going to use it for several days. If any
liquid that leaks from the batteries touches you, immediately wash it
away with water.
Insert the batteries
into the remote
Step 3
Preset the channels automatically
Tips
•If you want to stop automatic channel presetting, press SELECT twice.
•If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 11).
Note (Not used for this model)
•During automatic channel presetting, your TV screen will indicate
“B/G”, “I”, “D/K”or “M”for the TV system.
AUTO
PROGR
1
1
VHF LOW AUTO
1
2
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
!
Using Your New TV
4
Using Your New TV
Getting Started
Step 1
Connect the antenna
If you wish to connect a VCR, see the Connecting a VCR diagram below.
Using Your New TV
IEC connector
(not supplied)
To video
and audio
outputs
(yellow)
-L (MONO) (white)
-R (red)
Audio/Video cable (not supplied)
Rear of TV
Connecting a VCR
To watch the video input, press t(see page 14).
(Not used for this model)
: Signal flow
: Signal flow
or Antenna cable
(not supplied)
Antenna cable
(not supplied)
(yellow)
-L (MONO) (white)
-R (red)
To video
and audio
outputs Audio/Video cable (not supplied)
To t1 (video input)
To 8(antenna)
To antenna output
: Signal flow
VCR
Antenna cable (not supplied)
To antenna output
VCR
To
t
1 or 2 (video input)
Rear of TV
Rear of TV
L(MONO)R
RL
VIDEO IN
VIDEO OUT
VIDEO
AUDIO
1
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
RL
To 8(antenna)
KV-XA21M93

–9 –
KV-XA21M93
RM-952
Using Your New TV
6
Connecting the TWEETER
You can enjoy high quality sound by connecting the TWEETER.
Connect the wires to the TWEETER terminals at the rear of your TV. The
plain wire should be connected to the 3red terminal and the striped wire
to the #black terminal.
Notes
•Connect only the supplied TWEETER; otherwise your TV may
malfunction.
•Unplug your TV from the wall outlet when connecting the TWEETER.
•To prevent a malfunction caused by a short circuit of the terminals, make
sure that none of the TWEETER wire strands stick out, making contact
with it’s neighbouring TWEETER terminal.
Rear of TV
Striped
wire
Plain
wire
TWEETER (8 )
– +
WOOFER(8 )
– +
TWEETER
Using Your New TV
7
Using Your New TV
Connecting optional components
You can connect optional audio/video components, such as a VCR, multi disc player,
camcorder, video game or stereo system.
To watch the video input of the connected equipment, press t(see page 14).
Connecting a camcorder/video game equipment
using the t(video input) jacks
Notes
(Not used for this model)
•You can also connect video equipment to the t1 (video input) jack at
the rear of your TV.
KV-XG29M50 only
•You can also connect video equipment to the t1 or 2 (video input) jacks
at the rear of your TV.
•Do not connect video equipment to the t2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
Connecting audio/video equipment using the T
(monitor output) jacks
(Not used for this model)
Front of TV
Camcorder
Video game
equipment
To video and
audio outputs
: Signal flow
To
t
2
(video input)
or
Audio/Video cable (not supplied)
(yellow)
-L (MONO)
(white)
-R (red)
Rear of TV
To
antenna
output
To video and
audio inputs
or
Audio system
To
audio
inputs
VCR
: Signal flow
Antenna cable (not supplied)
Audio/Video cable
(not supplied)
L(MONO)R
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
2
21
L(MONO)
R
continued
To T
(monitor
output)
KV-XA21M93
(Not used for this model)

–10 –
KV-XA21M93
RM-952
Using Your New TV
8
Note
•If you connect a monaural VCR, connect the yellow plug to (the yellow
jack) and the black plug to -L (MONO) (the white jack).
KV-XA21M93/XA21M80/XA21M61/XA21M50
(yellow)
-L (MONO)
(white)
-R (red)
Rear of TV
To
antenna
output
To video and
audio inputs
or
Audio system
To
audio
inputs
VCR
: Signal flow
To T
(monitor output)
Antenna cable (not supplied)
Audio/Video cable (not supplied)
L(MONO)
R
1
Connecting optional components (continued)
Using Your New TV
9
Using Your New TV
Securing the TV
To prevent the TV from falling, secure the TV using one of the following methods:
A
With the supplied screws, attach the band to the TV stand and to the rear of
the TV using the provided hole.
or
B
Put the cord or chain through the clamps to secure the TV against a wall or
pillar.
Note
•Use only the supplied screws. Use of other screws may damage the TV.
20
mm
3.8 mm
or
AB

–11 –
KV-XA21M93
RM-952
Using Your New TV
10
Presetting
channels
You can preset up to 100 TV channels in
numerical sequence from program
number 1 using the remote and the
buttons on your TV as well.
Presetting channels automatically
1Press !to turn on the TV.
2Press AUTO PROGR.
Note (Not used for this model)
•During automatic channel presetting, your TV screen will indicate “B/G”,
“I”, “D/K”or “M”for the TV system.
To preset channels automatically from a specified program number
(1) Press SELECT until “AUTO PROGRAM”appears.
(2) Press + or –.
The on-screen display will start flashing.
(3) Press PROGR +/–or the number buttons until the desired program number
appears.
(4) Press + or –.
Number buttons
~/1
SELECT
2+/–
PROGR +/–
+ or –
PIC MODE
TV
123
46
789
-0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
2
!
VHF LOW AUTO
AUTO
PROGR
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
AUTO
PROGR
!
Using Your New TV
11
Using Your New TV
Presetting channels manually
1Press SELECT until
“MANUAL PROGRAM”
appears.
2Press + or –.
3Press PROGR +/– or the
number buttons until the
desired program number
appears.
4Press + or – until the
desired channel picture
appears.
5Press SELECT.
Note
•If you preset a locked program number, that particular program number
will be unlock automatically (see page 20).
To change the TV system setting
If the picture or sound is abnormal when receiving programs through the
8
(antenna)
terminal
(1) Press SELECT until “TV SYS”appears.
(2) Press + or –to select the appropriate
TV system until the picture or sound
quality is optimal.
or
MANUAL PROGRAM
SELECT
VHF LOW B/G
123
456
78
0
-/--
9
PROGR
1
SELECT
TV SYS: B/G
B/G I D/K M
continued

–12 –
KV-XA21M93
RM-952
Using Your New TV
12
To change the color system setting
If the color is abnormal when receiving programs through the
8
(antenna) terminal
or the
t
(video input) jack.
(1) Press SELECT until “COLOR SYS”appears.
(2) Press + or –to select the appropriate
color system until the color is
optimal.
Tip
•Normally set “COLOR SYS”to “AUTO”.
Skipping program numbers
1Press PROGR +/–or the number buttons until the unused or unwanted
program number appears.
2Press SELECT until “MANUAL PROGRAM”appears.
3Press + or –.
4Press PIC MODE.
5Press SELECT.
To restore the skipped program number again
Preset the channel automatically or manually.
Tip
•You can also use SELECT and 2+/–on the TV to preset channels and
skip program numbers.
To use the fine tuning (FINE) function
The fine tuning (FINE) function may help to reduce the following problems:
incomplete Teletext display (Not used for this model), double images and lines
moving across the TV screen.
You can use the fine tuning function as below:
(1) Select the program number you want to adjust.
(2) Press SELECT until “MANUAL PROGRAM”appears on the screen.
(3) Press + or –on the remote control once.
(4) Press to display “FINE”on the screen.
(5) Press + or –continuously until the above problems are minimized.
The + or –icon on the screen flashes while tuning.
(6) Press SELECT to return to normal screen.
COLOR SYS: AUTO
AUTO PAL SECAM
NTSC 3.58NTSC 4.43
Presetting channels (continued)
Using Your New TV
13
Using Your New TV
Watching the TV
This section explains functions used
while watching the TV. Most operations
can be done using the remote.
1Press !to turn on the TV.
When the TV is in the
standby mode (the 1
indicator on the TV is lit
red), press ?/1on the
remote or PROGR +/–on
the TV.
2Press PROGR +/–or the
number buttons to select
the program number.
For double digit numbers,
press -, then the number
(e.g., for 25, press -, then
2 and 5).
3Press 2+/–to adjust the
volume.
or
1
indicator
%
?/
1
t
a
Number buttons
SELECT
2+/–
PROGR +/–
+ or –
JUMP
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
PROGR
SELECT AUTO
PROGR
!
TV
123
46
789
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-
2
!
123
456
78
0
-/--
9
PROGR
continued

–13 –
KV-XA21M93
RM-952
Using Your New TV
14
To
Turn off temporarily
Turn off completely
Mute the sound
Watch the video input
(VCR, camcorder, etc.)
Jump back to the previous program
number
Display the on-screen information*
Adjust the volume of all
program numbers automatically
Adjust the picture position when it
is not aligned to the TV screen
(KV-XG29M50/XA21M93
/XA21M61 only)
Additional tasks
* The picture, sound, and either the program number or video input are
displayed. The on-screen display for the picture and sound information
disappears after about three seconds.
Changing the on-screen display language
1Press SELECT until
“LANGUAGE / :
ENGLISH”appears on the
screen.
2Press + or –to select
““.
Tip
•You can also use SELECT and 2+/–on the TV to select the on-screen
display language.
PIC ROTATION
Press
?/1. The 1indicator on the TV lights up red.
!on the TV.
%.
tto select “VIDEO 1”or “VIDEO 2”.
To return to the TV program, press a.
JUMP.
.
SELECT repeatedly until “INTELLIGENT VOL”
appears, then press + or –to select “ON”.
To cancel, select “OFF”.
SELECT repeatedly until “PIC ROTATION”appears,
then press + or –to adjust the alignment of the picture
position.
The
+
or icon on the screen flashes while adjusting.
LANGUAGE / : ENGLISH
SELECT
/ LANGUAGE:
Watching the TV (continued)
Using Your New TV
15
Using Your New TV
Setting the Wake Up timer
1Press until the desired
period of time appears.
The Wake Up timer starts
immediately after you
have set it.
2Select the program number or video input you want to display when you
wake up.
3Press ?/1 or set the Sleep timer if you want the TV to turn off automatically.
The indicator on the TV lights up orange.
To cancel the Wake Up timer
Press until “WAKE UP TIMER: OFF”appears or turn off the TV’s
main power.
Note
•If no buttons or controls are pressed for more than two hours after the
TV is turned on using the Wake Up timer, the TV automatically goes into
the standby mode. To continue watching the TV, press any button or
control on the TV or the remote.
Setting the Sleep timer
Press until the desired
period of time appears.
The Sleep timer starts
immediately after you
have set it.
To cancel the Sleep timer
Press until “SLEEP TIMER: OFF”appears or turn the TV off.
WAKE UP TIMER:10M
WAKE UP TIMER:OFF WAKE UP TIMER:12H00M
After 10 minutes
No Wake Up timer After 12 hours
SLEEP TIMER:30M SLEEP TIMER:60M
SLEEP TIMER:OFF SLEEP TIMER:90M
After 30 minutes
No Sleep Timer
After 60 minutes
After 90 minutes

–14 –
KV-XA21M93
RM-952
Advanced Operations
16
Customizing the
picture and sound
You can customize the picture and
sound by selecting the picture and
sound modes or by adjusting its
settings.
You can change the sound effect by
selecting the surround mode.
Selecting the picture and sound modes
To select the picture mode
Press PIC MODE
repeatedly until you get
the desired picture mode.
Select To
“DYNAMIC”receive high contrast pictures.
“STANDARD”receive normal contrast pictures.
“SOFT”receive mild pictures.
To select the sound mode
Press SOUND MODE
repeatedly until you get
the desired sound mode.
Select To
“DYNAMIC”listen to dynamic and clear sound that emphasizes the low and
high sound.
“DRAMA”listen to sound that emphasizes vocals and background music.
“SOFT”receive soft sound.
Advanced Operations
SOUND MODE
PIC MODE
SELECT
+ or –
-
TV
0
SOUND
MODE
FAVORITE
PROGR
2
STANDARDDYNAMIC SOFT
PIC MODE
≥ DYNAMIC
≥ DRAMA
≥ SOFT
SOUND
MODE
Advanced Operations
17
Adjusting the picture and sound settings
1Press SELECT until the
desired setting appears.
Each time you press
SELECT, the setting
item will change as follows:
2Press + or –to adjust the
item.
3To adjust other items, repeat steps 1 to 2.
* “HUE”can be adjusted for the NTSC system only.
Notes
•When you select a picture or sound mode, the adjusted settings will be
reset according to the selected mode.
•You can also use SELECT and 2+/–on the TV to adjust the picture and
sound settings.
SELECT
PICTURE 60
PICTURE COLOR BRIGHT HUE*
BALANCE TREBLE BASS SHARP
Advanced Operations
continued

–15 –
KV-XA21M93
RM-952
Advanced Operations
18
Selecting the surround mode
Not used for this model
1Press SELECT repeatedly
until “SURROUND”
appears.
2Press + or –to select the
desired surround sound.
Select To
“MOVIE”listen to sound that spreads out over a large area, giving the feeling
of being at a movie theatre.
“MUSIC”listen to the sound that gives the feeling of being at a live concert.
“OFF”turn off the surround sound.
KV-XA21M93/XA21M80/XA21M61/XA21M50
1Press SELECT repeatedly
until “SURROUND”
appears.
2Press + or –to select “ON”.
To turn off the surround
mode, select “OFF”.
SURROUND: MOVIE
SELECT
MUSICMOVIE OFF
SURROUND: ON
SELECT
ON OFF
Customizing the picture and sound (continued)
Advanced Operations
19
Viewing your
favorite channels
You can display six of your favorite
channels for quick and easy selection.
You can program the favorite channel
setting as well.
Selecting a favorite channel
1Press FAVORITE.
2Press the number button
from 1 to 6 to select the
desired favorite channel.
When you use the “FAVORITE CH”
feature for the first time, six preset channels will appear.
FAVORITE
+ or –
PROGR +/–
Number buttons
Programming the favorite channel
1Press PROGR +/–or
number buttons to select
the program number you
want to program (e.g.,
program number 8).
2Press SELECT until
“FAVORITE CH SETUP”
appears.
3Press + or –to select the
favorite channel you want to
program (e.g., 3).
4Press SELECT.
The selected favorite channel
(e.g., 3) turns red for about
one second.
5To program other favorite channels, repeat steps 1 to 4.
or
123
46
789
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-
2
FAVORITE
FAVORITE CH
1PR01 2PR02 3PR03
4PR04 5PR05 6PR06
123
456
1
123
456
78
0
-/--
9
PROGR
8
SELECT
FAVORITE CH SETUP :
FAVORITE CH SETUP :
SELECT
KV-XA21M93

–16 –
KV-XA21M93
RM-952
Advanced Operations
20
Blocking the
channels
(CHILD LOCK)
You can lock some program numbers to
prevent children from watching certain
channels, by using the buttons on the
remote control.
1Select the program number you want to lock.
2Press SELECT until “CHILD
LOCK”appears on the
screen.
3Press + or –to select “ON”.
The symbol appears on
the screen.
To cancel, press + or –to
select “OFF”. The
symbol disappears from
the screen.
Note
•If you preset a locked program number, that particular program number
will be unlocked automatically (see page 11).
SELECT
+ or –
TV
123
46
789
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-
2
CHILD LOCK: OFF
SELECT
CHILD LOCK: ON
1
Advanced Operations
21
Enjoying stereo or
bilingual programs
You can enjoy stereo sound or bilingual
programs of NICAM and A2 stereo
systems.
Press A/B repeatedly until you
receive the sound you want.
The on-screen display changes to
show the selected sound.
The indicator on the TV lights up
red when receiving any stereo or
bilingual program.
When receiving a NICAM program
Broadcasting On-screen display (Selected sound)
NICAM stereo
NICAM bilingual
NICAM monaural
A/B
indicator
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
TV
123
46
789
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-
2
NICAM
NICAM MONO
(Stereo sound) (Regular sound)
NICAM
MAIN
MONO
(Main sound)
(Regular sound)
NICAM
SUB
(Sub sound)
NICAM
MAIN
MONO
(Main sound)
(Regular sound)
continued

–17 –
KV-XA21M93
RM-952
Advanced Operations
22
When receiving an A2 program
Receiving area for NICAM and A2 programs
Notes
•If the signal is very weak, the sound becomes monaural automatically.
•If the stereo sound is noisy when receiving a NICAM program, select
“MONO”. The sound becomes monaural, but the noise is reduced.
•Before receiving a NICAM stereo program in China, please check the
NICAM broadcast condition at your area. When receiving a NICAM
stereo program, the receiving conditions might vary depending on area.
In addition, different strength of the NICAM broadcast signal might affect
the receiving quality.
If the sound is distorted when receiving a monaural
program through the 8(antenna) terminal
Press A/B repeatedly until “MONO”appears on the screen.
To cancel the monaural sound setting, press A/B again until
“AUTO”appears on the screen.
Notes
•The “MONO”or “AUTO”setting is memorized for each program
number.
•You cannot receive stereo broadcast signal when the TV is in the
“MONO”setting. Normally set the TV to “AUTO”.
Broadcasting On-screen display (Selected sound)
A2 stereo
A2 bilingual
System
NICAM
A2
Receiving area
Hong Kong, Singapore, New Zealand, Malaysia,
Thailand, etc.
Australia, Malaysia, Thailand, etc.
STEREO
MONO
(Stereo sound)
(Regular sound)
MAIN SUB
(Main sound) (Sub sound)
MONO AUTO
Enjoying stereo or bilingual programs
(continued)
Additional Information
25
Additional Information
Additional Information
Self-diagnosis function
Your TV is equipped with a self-diagnosis function. If there is a
problem with your TV, the 1indicator flashes red. The number of
times the 1indicator flashes indicates the possible causes.
1Check that the 1indicator flashes red a number of times between 3-second
intervals.
2Count the number of times the 1indicator flashes.
3Press !(main power) to turn off your TV.
4Inform your nearest Sony service center about the number of times the 1
indicator flashes.
Be sure to note the model name and serial number located on the rear of
your TV.
Front of TV
1indicator
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
!

–18 –
KV-XA21M93
RM-952
Additional Information
26
Snowy picture
Noisy sound
Distorted picture
Noisy sound
Good picture
Noisy sound
No picture
No sound
Troubleshooting
If you find any problem while viewing your TV, please check the following guide.
If any problem persists, contact your Sony dealer.
Possible causeSymptom Solutions
•Connection is loose or
the cable is damaged.
•Channel presetting is
inappropriate or
incomplete.
•The antenna type is
inappropriate.
•The antenna direction
is inappropriate.
•Signal transmission is
low.
•Broadcast signals are
too strong.
•The TV system setting
or channel presetting
is inappropriate or
incomplete.
•The selected sound is
inappropriate.
•The power cord,
antenna or VCR is not
connected.
•The TV is not turned
on.
4
11
–
–
–
–
10
11
21
4
14
13
•Check the antenna cable and connection
on the TV, VCR and on the wall.
•Press SELECT until “MANUAL
PROGRAM”appears on the screen, then
preset the channel again.
•Check the antenna type (VHF/UHF).
Contact a Sony dealer for advice.
•Adjust the antenna direction. Contact a
Sony dealer for advice.
•Try using a booster.
•Turn off or disconnect the booster if it is in
use.
•If the sound of all the channels are noisy,
check the TV system (TV SYS) setting,
then press AUTO PROGR to preset the
channels again.
•If the sound of some channels are noisy,
select the channel, then select the
appropriate TV system (TV SYS).
•
If the sound of some channels are noisy,
select the channel, then press A/B to select
the main sound (KV-XA21M93/
XA21M61 only).
•Check the power cord, antenna and the
VCR connections.
•Press ?/1 (power).
•Press !(main power) on the TV to turn
off the TV for about five seconds, then
turn it on again.
Page
Additional Information
27
Additional Information
Good picture
No sound
Dotted lines or
stripes
Double images or
“ghosts”
No color
Abnormal color
patches
TV cannot receive
stereo broadcast
signal
(KV-XA21M93/
XA21M61 only)
•Press 2+ to increase the volume level.
•Press %to cancel the muting.
•Press A/B until a better sound is heard
(KV-XA21M93/XA21M61 only).
•Do not use a hair dryer or other
equipment near the TV.
•Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
•Use a highly directional antenna.
•Use the fine tuning (FINE) function.
•Adjust the antenna direction. Contact a
Sony dealer for advice.
•Turn off or disconnect the booster if it is
in use.
•Press SELECT until “COLOR”appears
on the screen, then press + or –to adjust
the color level.
•Press SELECT until “COLOR SYS ”
appears on the screen, then check the
color system setting (usually set this to
“AUTO”).
•Adjust the antenna direction. Contact a
Sony dealer for advice.
•Keep external speakers or other electrical
equipment away from the TV. Do not
move the TV while the TV is turned on.
Press !(main power) on the TV to turn
off the TV for about five minutes, then
turn it on again.
•Press A/B until “AUTO”appears
on the screen.
Possible cause
Symptom Solutions
•The volume level is
too low.
•The sound is muted.
•Broadcast signal has a
transmission problem.
•There is local
interference from cars,
neon signs, hair
dryers, power
generators, etc.
•Broadcast signals are
reflected by nearby
mountains or
buildings.
•The antenna direction
is inappropriate.
•Use of a booster is
inappropriate.
•The color level setting
is too low.
•The color system
setting is
inappropriate.
•The antenna direction
is inappropriate.
•The magnetic
disturbance from
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
•The stereo reception
setting is
inappropriate.
13
14
21
–
–
–
12
–
–
17
12
–
–
21
Page
continued

–19 –
KV-XA21M93
RM-952
KV-XA21M93
Additional Information
28
Possible causeSymptom Solutions Page
•Check the antenna cable and connection
on the TV, VCR and on the wall.
•Adjust the antenna direction. Contact a
Sony dealer for advice.
•Press A/B until a better sound is heard.
—
•Check the antenna cable and connection
on the TV, VCR, and at the wall.
•Adjust the antenna direction. Contact a
Sony dealer for advice.
•Try using a booster.
•Use the fine tuning (FINE) function.
•Keep external speakers or other electrical
equipment away from the TV.
•Press SELECT until “PIC ROTATION”
appears on the screen, then press + or –
to align the picture to the TV screen.
•Use the fine tuning (FINE) function.
•Contact your nearest Sony service center.
—
—
Troubleshooting (continued)
4
–
21
23
4
–
–
12
–
14
12
25
–
–
•Connection is loose or
the cable is damaged.
•The antenna direction
is inappropriate.
•Broadcast signal has a
transmission problem.
•The channel carries no
Teletext broadcast.
•Connection is loose or
the cable is damaged.
•The antenna direction
is inappropriate.
•Signal transmission is
too low.
•The magnetic
disturbance from
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
•
There is interference
from external sources,
e.g., heavy machineries,
nearby broadcast
station.
•Your TV may need
service.
•
Changes in room
temperature
sometimes make the
TV cabinet expand or
contract, making a
noise. This does not
indicate a malfunction.
•
The TV’s demagnetizing
function is working.
This does not indicate a
malfunction.
Stereo broadcast
sound switches on
and off or is distorted.
or
The sound switches
between monaural
and stereo frequently.
“100”appears on
the top of the
screen and there is
no Teletext display.
(Not used for this
model)
Teletext display is
incomplete
(snowy picture or
double images).
(not used for this
model)
Picture slant
Lines moving across
the TV screen.
The 1indicator on
your TV flashes red
a number of times
between 3-second
intervals.
TV cabinet creaks.
A “boom”sound is
heard when the TV
is turned on.
Additional Information
29
Additional Information
Overview of controls
TV front panel
(Not used for this model)
PageFunctionButton
PROGR
SELECT
AUTO
PROGR
2
(MONO)
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
2
L(MONO) R
PROGR
SELECT AUTO
PROGR
!
Preset channels automatically.5
Select the desired item. 12
Select program number. 13
Turn off completely or turn on 13
the TV.
Adjust volume. 13
Standby indicator.13
Select TV or video input. 14
Wake Up indicator. 15
Stereo indicator. 21
Headphone jack. –
AUTO PROGR
SELECT
PROGR +/–
!
2 +/–
t
(KV-XA21M93/
XA21M61 only)
i
continued
1

–20 –
KV-XA21M93
RM-952
2-5. J2 BOARD AND TERMINAL
BRACKET REMOVAL
2Terminal bracket
3J2 Board
One screw
(+BVTP 4x16)
1
2-6. SERVICE POSITION
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL 2-2. SPEAKER REMOVAL 2-3. CHASSIS ASSY REMOVAL
2-4. F BRACKET REMOVAL
Note:
1. Disconnect the speaker connection on the right side.
2. Undress necessary wires that creates tension while
placing the chassis into Service Position.
1Two screws
(+BVTP 4 × 16)
2Six screws
(+BVTP 4 × 16)
3Rear Cover
2Two screws washer head
(+P4 x16)
3F Board bracket
5Two claws
1Three connectors
4F board