Sony Trinitron KV-TF21M80 User manual

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KV-TF21M80 RM-952 India SCC-U22J-A
MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON ® COLOR TV
SERVICE MANUAL BG-3S
MODEL COMMANDER DEST. CHASSIS NO.

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KV-TF21M80
RM-952
SPECIFICATIONS
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK !ONTHE
SCHEMATIC DIAGRAMS, EXPLODEDVIEWS AND INTHE 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. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL.FOLLOW THESEPROCEDURES WHENEVER CRITICAL
COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.
Note
Power requirements 110-240V AC, 50/60Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G, I, D/K, M
Color system PAL, PAL60, 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 : S01 to S03, S1 to S41, Z1 to Z39
MVHF : A2 toA13/ 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 3W + 3W
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(Headphone) Output : 1 Minijack
Picture tube 21 inch
Tube size (cm) 54 Measured diagonally
Screen size (cm) 51 Measured diagonally
Dimension (w/h/d, mm) 490 x 458 x 487
Mass (kg) 25
Design and specifications are subject to change without notice.

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TABLE OF CONTENTS
Section Title Page
SELF DIAGNOSIS FUNCTION................................ 4
1. GENERAL .......................................................... 8
2. DISASSEMBLY
2-1. Rear Cover Removal................................................ 20
2-2. Chassis Assy Removal ............................................. 20
2-3. F Bracket Removal .................................................. 20
2-4. Service Position ....................................................... 20
2-5. Replacement of Parts ............................................... 21
2-5-1. Replacement of Control Button ....................... 21
2-5-2. Replacement of Bar Control............................. 21
2-6. Terminal Bracket Removal ...................................... 21
2-7. Degauss Coil Removal............................................. 21
2-8. Picture Tube Removal.............................................. 22
3. SET-UP ADJUSTMENTS
3-1. Beam Landing.......................................................... 23
3-2. Convergence............................................................. 24
3-3. Focus Adjustment .................................................... 26
3-4. G2 (Screen) and White Balance Adjustments ......... 26
4. CIRCUIT ADJUSTMENTS
4-1. Adjustments with Commander ................................ 27
4-2. Adjustment Method ................................................. 28
4-3. Picture Quality Adjustments.................................... 33
4-4. A Board Adjustment After IC003 (Memory)
Replacement............................................................. 33
4-5. Picture Distortion Adjustment ................................. 34
Section Title Page
5. DIAGRAMS
5-1 Block Diagram ......................................................... 37
5-2 Frame Schematic Diagram ...................................... 40
5-3 Circuit Boards Location .......................................... 42
5-4 Schematic Diagrams and Printed Wiring Boards ... 42
(1) Schematic Diagram of A(1/2) Board....................... 43
(2) Scheamtic Diagram of A(2/2) Board....................... 47
(3) Schematic Diagrams of C3 and F Boards ............... 55
5-5 Semiconductors........................................................ 59
6. EXPLODED VIEWS
6-1. Chassis ..................................................................... 61
7. ELECTRICAL PARTS LIST................................... 63

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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. DIAGNOSTICTEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
• White balance
failure (no
PICTURE)
• Micro reset
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
—
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F4601
(F Board)
• H.OUT Q511 is shorted.
(A board)
• IC1800 is shorted.
(C3 Board).
• -13V is not supplied.
(A board)
• IC 503 faulty (A board)
• IC 301 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• Video OUT IC701 is faulty.
(C3 board)
• IC301 is faulty. (A board)
• No connection A board to
C3 board.
• Discharge CRT
(C3 Board)
• Static discharge
• External noise
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
SELF DIAGNOSTIC FUNCTION

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2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
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.
3. STOPPINGTHE 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.
STANDBY/SLEEP lamp
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
Lamp ON 0.3 sec.
2 times
5 times

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KV-TF21M80
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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 ScreenTest]
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
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.
Numeral “0” means that no fault has been detected.
Numeral “1” means a fault has been detected.
002 : 000
003 : 000
004 : 000
005 : 001
101 : 000
SELF DIAGNOSTIC

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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
FROM
[+B] Q604 C3
[V] Q509/507
IC001
SYSTEM IC003 MEMORY
B-DAT
IO-SDAT
IK-IN
MP/
PROTECT
IO-8DAT
O-LED
SDA
54521
18 51
4635

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SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual.
2
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only between 110 – 240 V A .
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. Refer servicing to qualified personnel.
Do not install the TV in hot, humid or excessively
dusty places.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
Do not block the ventilation openings of the TV.
Do not pull the power cord to disconnect the TV.
Pull it out by the plug.
Disconnect the power cord if you are not going
to use the TV for several days.
Install the TV in a stable position. 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.
lean 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.
4
Using Your New TV
Getting Started
Step 1
Connect the antenna
If you wish to connect a V R, see the “ onnecting a V R” diagram below.
Using Your New TV
IEC connector
(not supplied)
To video and
audio outputs
VCR
(yellow)
-L (MONO) (white) -R (red)
ntenna cable (not supplied)
To … 1
(video input)
udio/Video cable
(not supplied) : Signal flow
To antenna
output
ntenna cable
(not supplied)
Rear of TV
Rear of TV
Connecting a VCR
To watch the video, press … (see page 13).
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
R L
L(MONO)
1
or
To ˘
(antenna)
: Signal flow

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5
Using Your New TV
Using Your New TV
Preset the channels auto atically
Tips
• If you want to stop automatic channel presetting, press SELE T twice.
• If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 10).
Note (KV-HF14M80/TF21M80/XF21M83/XF21M80 only)
• During automatic channel presetting, your TV screen will indicate “B/G” ,
“I”, “D/K” or “M” for the TV system.
Now You Are Ready. . .
To watch your TV, see page 12.
Notes
• If you connect a monaural V R, connect the yellow plug to (the
yellow jack) and the black plug to -L (MONO) (the white jack).
• If you connect a V R to the ˘ (antenna) terminal, preset the signal
output from the V R to the program number 0 on the TV.
• When no signal is input to the connected video equipment, the TV screen
becomes blue.
Step 2
Note
• Do not use old batteries nor use different types of batteries together.
Step 3
C UTION
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.
Insert the batteries
into the re ote
ONE-PUSHAUTOMATIC PROGRAMING
1
1
ONE-PUSH AUTOMATIC PROGRAMMING
1
2
VHF LOW AUTO
Front of TV
6Using Your New TV
Connecting the 3D WOOFER
(KV-XF21M83/XF21M93 only)
You can enjoy high quality sound by connecting the 3D WOOFER.
Rear of TV
WOOFER(8 )
L(MONO)
3D WOOFER
Black wire
Red wire
12
1
Attach the 3D WOOFER into the ootholds on the top o your TV.
2
Connect the wires to the 3D WOOFER (8 Ω) terminals at the rear o your TV.
The red wire should be connected to the ‘ red terminal and the black wire
to the ’ black terminal.
Notes
• onnect only the supplied 3D WOOFER; otherwise your TV may
malfunction.
• Unplug your TV from the wall outlet when connecting the 3D WOOFER.
• To prevent a malfunction caused by a short circuit of the terminals, make
sure that none of the 3D WOOFER wire strands stick out, making contact
with the neighbouring speaker terminal.

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KV-TF21M80
RM-952
8Using 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 o
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
AB
3.8 mm
or
7
Using Your New TV
Using Your New TV
Connecting optional co ponents
You can connect optional audio/video components, such as a V R, multi disc player,
camcorder, video game or stereo system.
To watch the picture of the connected equipment, press … (see page 13).
Connecting a ca corder/video ga e equip ent
using the … (video input) jacks
Note
• You can also connect video equipment to the … 1 (video input) jacks at
the rear of your TV.
Connecting audio/video equip ent using the Ú
( onitor output) jacks
Note
• When connecting a monaural V R, connect the yellow plug to (the
yellow jack) and the black plug to -L (MONO) (the white jack).
L(MONO)
1
ONE-PUSHAUTOMATIC PROGRAMING
ONE-PUSHAUTOMATIC PROGRAMING
2
Front of TV
Camcorder
Video game
equipment
To video and
audio outputs
(yellow)
-L (MONO)
(white)
-R (red)
Rear of TV
To
antenna
output
To video and
audio inputs
or
udio system
To
audio
inputs
VCR
:Signal flow
:Signal flow
To
…
2
(video input)
To Ú
(monitor
output)
or
udio/Video cable (not supplied)
ntenna cable (not supplied)
udio/Video cable
(not supplied)
or

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9
Using Your New TV
Using Your New TV
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 auto atically
1
Press U to turn on the TV.
2
Press AUTO PROGR.
Note (KV-HF14M80/TF21M80/XF21M83/XF21M80 only)
• 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 SELE T 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 –.
TV
123
46
789
÷0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
u
Number buttons
SELECT
. +/–
PROGR +/–
+ or –
PIC MODE
ONE-PUSHAUTOMATIC PROGRAMING
continued
VHF LOW AUTO
10 Using Your New TV
Presetting channels (continued)
1
SELECT
b
SELECT
b
or
123
456
78
0
-/--
9
PROGR
b
Presetting channels anually
1
Press SELECT until
“MANUAL PROGRAM”
appears.
2
Press + or –.
3
Press PROGR +/– or the
number buttons until the
desired program number
appears.
4
Press + or – until the
desired channel picture
appears.
5
Press SELECT.
To change the TV system setting
If the picture or sound is abnormal when receiving programs through the
˘
(antenna)
terminal
(1) Press SELE T until “TV SYS” appears.
(2) Press + or – to select the appropriate TV system until the picture or sound quality
is optimal.
B/G ID/KM
MANUAL PROGRAM
VHF LOW B/G
TV SYS: B/G

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KV-TF21M80
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12 Using Your New TV
Watching the TV
This section explains functions used
while watching the TV. Most operations
can be done using the remote.
1
Press U to turn on the TV.
When the TV is in the
standby mode (the u
indicator on the TV is lit
red), press u on the remote
or PROGR +/– on the TV
.
2
Press PROGR +/– or the
number buttons to select
the TV program.
For double digit numbers,
press ÷, then the number
(e.g., for 25, press ÷, then
2 and 5).
3
Press
. +/– to adjust the
volume.
¤
u
…
;
Number buttons
SELECT
. +/–
PROGR +/–
+ or –
TV
123
46
789
÷0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
SELECT
p
PIC MODE
p
Á
JUMP
F VORITE
123
456
78
0
-/--
9
PROGR
or
ONE-PUSHAUTOMATIC PROGRAMING
11
Using Your New TV
Using Your New TV
To change the color system setting
If the color is abnormal when receiving programs through the
˘
(antenna) terminal
or the
…
(video input) jack
(1) Press SELE T until “ OL SYS” appears.
(2) Press + or – to select the appropriate color system until the color is optimal.
Tip
• Normally set “ OL SYS” to “AUTO”.
Skipping progra nu bers
1
Press PROGR +/– or the number buttons until the unused or unwanted
program number appears.
2
Press SELECT until “MANUAL PROGRAM” appears.
3
Press + or –.
4
Press PIC MODE.
5
Press SELECT.
To preset the skipped program number again
Preset the channel automatically or manually.
Tip
• You can also use SELE T and ¸ +/– on the TV to preset channels and
skip program numbers.
To use the fine tuning (FINE) function
The fine tuning (FINE) function may help to reduce the following problems:
double images and lines moving across the TV screen.
You can use the fine tuning function as below:
(1) Select the program number you want to adjust.
(2) Press SELE T 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 SELE T to return to normal screen.
AUTO PAL SECAM NTSC 3.58 NTSC 4.43
COL SYS: AUTO

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13
Using Your New TV
Using Your New TV
To
Turn off temporarily
Turn off completely
Mute the sound
Watch the video input
(V R, camcorder, etc.)
Jump back to the previous channel
Display the on-screen information*
Adjust the volume of all TV
programs automatically
Adjust the picture position when it
is not aligned to the TV screen
(KV-XF21M93/XF21M83/
XF21M80 only)
Do this
Press u. The u indicator on the TV lights up red.
Press U on the TV.
Press ¤.
Press … to select “VIDEO 1” or “VIDEO 2”.
To return to the TV program, press ;.
Press JUMP.
Press .
Press SELE T repeatedly until “INTELLIGENT VOL”
appears, then press + or – to select “ON”.
To cancel, select “OFF”.
Press SELE T repeatedly until “PI ROTATION”
appears, then press + or – to adjust the alignment of the
picture position.
The or icon on the screen flashes while
adjusting.
* The picture, sound, and either the program number or video mode are
displayed. The on-screen display for the picture and sound information
disappears after about 3 seconds.
Changing the on-screen display language
1
Press SELECT until
“LANGUAGE / :
ENGLISH”appears on the
screen.
2
Press + or – to select
“ “.
Tip
• You can also use SELE T and . +/– on the TV to select the on-screen
display language.
Additional tasks
continued
PIC ROTATION
STANDARDDYNAMIC SOFT
PIC MODE
LANGUAGE / :
13
Using Your New TV
Using Your New TV
Setting the Wake Up ti er
1
Press until the
desired period o time
appears.
The Wake Up timer starts
immediately after you have
set it.
2
Select the TV program or video mode you want to display when you wake
up.
3
Press u or set the Sleep timer i you want the TV to turn o 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 ti er
Press until the
desired period o 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

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16 Advanced Operations
Adjusting the picture and sound settings
1
Press SELECT until the
desired setting appears.
Each time you press
SELE T, the setting
item will change as follows:
2
Press + or – to adjust the
item.
3
To adjust other items, repeat steps 1 to 2.
* “HUE” can be adjusted for the NTS 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 SELE T and ¸ +/– on the TV to adjust the picture and
sound settings.
Selecting the surround ode
1
Press SELECT repeatedly
until “SURROUND”
appears.
2
Press + or – to select the
desired surround sound.
Select To
MOVIE listen to sound that spreads out over a large area, giving the feeling
of being at a movie theatre.
MUSI listen to the sound that gives the feeling of being at a live concert.
OFF turn off the surround sound.
MUSICMOVIE OFF
SURROUND: MOVIE
Customizing the picture and sound (continued)
b
SELECT
b
SELECT
PICTURE 60
PICTURE COLOR BRIGHT HUE*
BALANCE TREBLE BASS SHARP
15
Advanced Operations
Advanced Operations
Advanced Operations
SOUND MODE
Custo izing 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 odes
To select the picture mode
Press PIC MODE
repeatedly until you get
the desired picture mode.
Select To
DYNAMI 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
DYNAMI 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.
PIC MODE
SELECT
+ or –
LANGUAGE / :
STANDARDDYNAMIC SOFT
PIC MODE
continued
SOUND
MODE
FAVORITE
PROGR
Á

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KV-TF21M80
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17
Advanced Operations
Advanced Operations
Viewing your
favorite channels
You can display six of your favorite
channels for quick and easy selection.
You can change the favorite channel
setting as well.
Selecting a favorite channel
1
Press FAVORITE.
2
Press the number button
rom 1 to 6 to select the
desired channel.
When you use the FAVORITE H
feature for the first time, six preset channels will appear.
123
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5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
F VORITE
+ or –
PROGR +/–
Number
buttons
1
FAVORITE CH
1PR01 2PR02 3PR03
4PR04 5PR05 6PR06
FAVORITE CH SET UP
1PR01 2PR02 3PR03
4PR04 5PR05 6PR06
1PR01 2PR02 3PR03
4PR04 5PR05 6PR06
FAVORITE CH SET UP
Changing the favorite channel setting
1
Press SELECT until
“FAVORITE CH SET UP”
appears.
2
Press + or – to select the
avorite channel you want
to change (e.g. 3 PR03).
3
Press PROGR +/–, or
number buttons to
change the program
number.
4
Repeat steps 2 and 3 to set other avorite channels.
5
Press SELECT.
b
FAVORITE
123
456
b
SELECT
b
b
123
456
78
0
-/--
9
PR01 PR02 PR08
PR04 PR05 PR06
123
456
FAVORITE CH SET UP
PROGR
or
18 Advanced Operations
Blocking the
channels
(CHILD LOCK)
You can prevent a child from watching
certain channels by using the buttons on
the remote control.
1
Select the channel you want to lock.
2
Press SELECT until “CHILD
LOCK” appears on the
screen.
3
Press + or – to select
“ON”.
The symbol appears on
the screen.
To unlock the channel,
press + or – to select
“OFF”. The symbol
disappears from the screen.
Note
• If you preset a locked channel, that particular channel will be unlocked
automatically.
CHILD LOCK: ON
1
CHILD LOCK: OFF
SELECT
TV
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SOUND
MODE
FAVORITE
PROGR
Á
SELECT
+ or –

http://cxema.ru
– 16 –
KV-TF21M80
RM-952
19
Advanced Operations
Advanced Operations
TV
SOUND
MODE
FAVORITE
PROGR
Á
Broadcasting On-screen display (Selected sound)
NI AM stereo
NI AM bilingual
NI AM monaural
Selecting a stereo
or bilingual
progra
(KV-XF21M93 only)
You can enjoy stereo sound or bilingual
programs of NI AM and A2 (German)
stereo systems.
Press A/B repeatedly
until you receive the
sound you want.
The on-screen display changes
to show the selected sound
and the  indicator on the TV
lights up red.
When receiving a NIC M program
b
STEREO
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
/B
20 Advanced Operations
When receiving an 2 (German) program
Notes
• If the signal is very weak, the sound becomes monaural automatically.
• If the stereo sound is noisy when receiving a NI AM program, select
“MONO”. The sound becomes monaural, but the noise is reduced.
If the sound is distorted or noisy when receiving a monaural
program through the ˘ (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
position.
• 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 (German) stereo
A2 (German) bilingual
STEREO
MONO
(Stereo sound)
(Regular sound)
MONO AUTO
Selecting a stereo or bilingual program (continued)
MAIN SUB
(Main sound) (Sub sound)

http://cxema.ru
– 17 –
KV-TF21M80
RM-952
21
Additional In ormation
ONE-PUSHAUTOMATIC PROGRAMING
Additional Infor ation
Self-diagnosis
function
Your TV is equipped with a self-diagnosis function. If there is a
problem with your TV, the u indicator flashes red. The number of
times the u indicator flashes indicates the possible causes.
1
Check that the u indicator lashes red a number o times between 3-second
intervals.
2
Count the number o times the u indicator lashes.
3
Press U (main power) to turn o your TV.
4
In orm your nearest Sony service center about the number o times the
u indicator lashes.
Be sure to note the model name and serial number located on the rear o
your TV.
Front of TV
u indicator
Additional Infor ation
22 Additional In ormation
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
•
heck the antenna cable and connection
on the TV, V R and on the wall. (page 4)
• Press SELE T until “MANUAL
PROGRAM” appears on the screen then
preset the channel again. (page 10)
• heck the antenna type (VHF/UHF).
ontact a Sony dealer for advice.
• Adjust the antenna direction. ontact 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
(page 10), then press AUTO PROGR to
preset the channels again (page 9).
• If the sound of some channels are noisy,
select the channel, then select the
appropriate TV system (TV SYS).
(page 10)
• If the sound of some channels are noisy,
select the channel, then press A/B H to
select the main sound. (KV-XF21M93
only) (page 19)
• heck the power cord, antenna and the
V R connections.
• Press u (power).
• Press U (main power) on the TV to turn
off the TV for about five seconds, then
turn it on again.
• onnection is loose or the
cable is damaged.
• hannel 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 V R is not connected.
• The TV is not turned on.

http://cxema.ru
– 18 –
KV-TF21M80
RM-952
23
Additional In ormation
Possible causeSymptom Solutions
continued
Good picture
No sound
Dotted lines or stripes
Double images or
“ghosts”
No color
bnormal color patches
TV cannot receive stereo
broadcast signal
(KV-XF21M93 only)
• Press ¸ + to increase the volume level.
• Press ¤ to cancel the muting.
• Press A/B H until a better sound is
heard. (KV-XF21M93 only) (page 19)
• Do not use a hair dryer or other
equipment near the TV.
• Adjust the antenna direction for
minimum interference. ontact a Sony
dealer for advice.
• Use a highly directional antenna.
• Use the fine tuning (FINE) function.
(page 11)
• Adjust the antenna direction. ontact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
• Press SELE T until “ OLOR” appears
on the screen, then press + or – to adjust
the color level. (page 16)
•
Press SELE T until “ OL SYS ” appears on the screen, then check the color
system setting (usually set this to
“AUTO”). (page 11).
• Adjust the antenna direction. ontact 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 U (main power) on
the TV to turn off the TV for about five
minutes, then turn it on again.
• Press A/B H until “AUTO” appears
on the screen. (page 19)
•
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
inapproprite.
• Use of a booster is
inappropriate.
• The color level setting is
too low.
• The color system setting is
inappropriate.
• The antenna direction is
inapproriate.
• 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.
24 Additional In ormation
Stereo broadcast sound
switches on and off or is
distorted. or
The sound switches
between monaural and
stereo frequently.
(KV-XF21M93 only)
Picture slant
Lines moving across the
TV screen.
The
u
indicator on your
TV flashes red a number
of times between
3-second intervals.
TV cabinet creaks.
“boom” sound is heard
when the TV is turned on.
Troubleshooting (continued)
Possible causeSymptom Solutions
• heck the antenna cable and connection
on the TV, V R and on the wall. (page 4)
• Adjust the antenna direction. ontact a
Sony dealer for advice.
• Press A/B until a better sound is
heard. (page 19)
• Keep external speakers or other
electrical equipment away from the TV.
• Press SELE T until “PI ROTATION”
appears on the screen, then press + or –
to align the picture to the TV screen.
(page 13)
• Use the fine tuning (FINE) function.
(page 11)
• ontact your nearest Sony service
center. (page 21)
—
—
• onnection is loose or the
cable is damaged.
• The antenna direction is
inappropriate.
• Broadcast signal has a
transmission problem.
• 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.
• hanges in room
temperature sometimes
make the TV cabinet
expand or contact, making
a noise. This does not
indicate a malfunction.
• The TV’s demagnetizing
function is working. This
does not indicate a
malfunction.

http://cxema.ru
– 19 –
KV-TF21M80
RM-952
25
Additional In ormation
Identifying parts and controls
Refer to the pages indicated in parentheses ( ) for details.
Front panel
1
U
(main power) button (12)
2PROGR +/– (program) buttons (12)
3
¸
+/– (volume) buttons (12)
4
…
(TV/video) button (13)
5AUTO PROGR (program) button (5)
6SELECT button (10)
7
2
(headphone) jack
ONE-PUSHAUTOMATIC PROGRAMING
ONE-PUSH AUTOMATIC PROGRAMMING
2
26 Additional In ormation
Button function
For general TV operations For Teletext operations
Re ote Control
9
!º
!¡
!™
!£
!¢
!∞
!§
TV
123
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JUMP
SOUND
MODE
FAVORITE
PROGR
SELECT
p
PIC MODE
p
Á
TV
123
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5
JUMP
SOUND
MODE
FAVORITE
PROGR
SELECT
p
PIC MODE
p
Á
1u (power) button (12)
2; (TV) button (13)
3Number buttons (12)
4JUMP button (13)
5PROGR +/– buttons (12)
6 SELECT button (10)
7 PIC MODE button (15)
8 +/– buttons (10)
9(display) button (13)
!º ¤ (muting) button (13)
!¡ … (video) button (13)
!™ . +/– (volume) buttons (12)
!£ A/B button (19)
(KV-XF21M93 only)
!¢ Timer setting buttons (14)
(wake up timer)
(sleep timer)
!∞ FAVORITE button (17)
!§ SOUND MODE button (15)
!¶ Teletext operation buttons
(not used or KV-HF14M80/
TF21M80/XF21M93/XF21M83/
XF21M80)
(text) (enlarge)
(reveal) (hold)
(index) (text clear)
p
(FASTEXT: red, green, yellow, blue)
1
2
3
4
5
6
7
8
!¶
Names/symbols of buttons on the
remote are indicated in different colors
to represent the available functions.
Label color
White
Green

http://cxema.ru
– 20 –
KV-TF21M80
RM-952
SECTION 2
DISASSEMBLY
2-2. CHASSIS ASSY REMOVAL
2-1. REAR COVER REMOVAL 2-3. F BRACKET REMOVAL
1Three connectors
2F board
Lever
Six screws
(BVTP 4×16)
Rear cover
1
2Two screws
(BVTP 4×16)
1Chassis assy
Lever
Lever
2-4. SERVICE POSITION
(Note: Remove F Bracket first.)