Sony KV-XF21M31 Service Manual

SERVICE MANUAL
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.

KV-XF21M31 RM-952 New Zealand SCC-U26B-A

MODEL COMMANDER DEST. CHASSIS NO.
TRINITRON
®
COLOR TV
KV -XF21M31
RM-952
Power requirements 110-240 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 Teletext language English, Arabic, French Channel coverage
B/G VHF: 1 to 11 / UHF: 21 to 69 / CATV: S01 to S03, S1 to S41 I UHF: 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
M VHF: A2 to A13 / UHF: A14 to A79 /
˘ (Antenna) 75-ohm external terminal Audio output 5W + 5W 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) 640 × 456 × 498 Mass (kg) 29

SPECIFICATIONS

Note
CATV: S01 to S03, S1 to S4, Z1 to Z39
CATV: A-8 to A-2, A to W+4, W+6 to W+84
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.
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.
– 2 –

TABLE OF CONTENTS

KV-XF21M31
RM-952
Section Title Page
SELF DIAGNOSIS FUNCTION................................ 4
1. GENERAL........................................................................ 8
2. DISASSEMBLY
2-1. Rear Cover Removal................................................ 21
2-2. Chassis Assy Removal ............................................. 21
2-3. F Board Removal ..................................................... 21
2-4. Service Position ....................................................... 21
2-5. Replacement of Parts ............................................... 22
2-5-1. Replacement of Control Button ....................... 22
2-5-2. Replacement of Light Guide ............................ 22
2-6. V1 Board Removal .................................................. 22
2-7. Terminal Bracket Removal ...................................... 22
2-8. Degauss Coil Removal............................................. 23
2-9. Picture Tube Removal.............................................. 23
3. SET-UP ADJUSTMENTS
3-1. Beam Landing .......................................................... 25
3-2. Convergence............................................................. 26
3-3. Focus Adjustment .................................................... 28
3-4. G2 (Screen) and White Balance Adjustments......... 28
Section Title Page
5. DIAGRAMS
5-1. Block Diagram ......................................................... 39
5-2. Frame Schematic Diagram ...................................... 42
5-3 Circuit Boards Location .......................................... 45
5-4. Schematic Diagrams and Printed Wiring Boards ... 46
(1) Schematic Diagram of A (1/2) Board...................... 47
(2) Schematic Diagram of A (2/2) Board...................... 51
(3) Schematic Diagrams of C5 and VM1 Boards ......... 58
(4) Schematic Diagram of V1 Board ............................ 63
(5) Schematic Diagram of F Board ............................... 65
5-5. Semiconductors........................................................ 67
6. EXPLODED VIEWS
6-1. Chassis ..................................................................... 71
7. ELECTRICAL PARTS LIST....................................... 73
4. CIRCUIT ADJUSTMENT
4-1. Adjustments with Commander ................................ 29
4-2. Adjustment Method ................................................. 30
4-3. Picture Quality Adjustments.................................... 35
4-4. A Board Adjustment After IC003 (Memory)
Replacement............................................................. 35
4-5. Picture Distortion Adjustment................................. 36
– 3 –
KV -XF21M31
RM-952

SELF DIAGNOSTIC FUNCTION

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 INDICA TORS
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)
• H.OUT Q511 is shorted. (A board)
• IC1800 is shorted. (C5 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 IC1800 is faulty. (C5 board)
• IC301 is faulty. (A board)
• No connection A board tox C5 board.
• Discharge CRT (C5 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.
– 4 –
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
2 times
5 times
KV-XF21M31
RM-952
Lamp ON 0.3 sec. Lamp OFF 0.3 sec.
Lamp OFF 3 sec.
STANDBY/SLEEP lamp
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. 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.
– 5 –
KV -XF21M31
RM-952
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
SELF DIAGNOSTIC
002 : 000 003 : 000 004 : 000 005 : 001
101 : 000
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
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 –
6. SELF-DIAGNOSTIC CIRCUIT
KV-XF21M31
RM-952
FROM
CRT
FROM
[+B] Q604 C5
[V] Q509/507
IC301
Y/CHROMA JUNGLE
IK-IN
MP/
18 51
PROTECT
SDA
4635
IC001
SYSTEM
IO-8DAT
O-LED
IO-SDAT
MEMORY
B-DAT
54521
IC003
[+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.
[White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.)
– 7 –
The operating instructions mentioned here are partial abstracts
2
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only between 110 – 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. 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 during lightning storms or 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.
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.
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)
VCR
(yellow)
-L (MONO) (white)
-R (red)
Antenna cable (not supplied)
Audio/Video cable (not supplied)
: Signal flow
To antenna output
Antenna cable (not supplied)
Rear of TV
Rear of TV
Connecting a VCR
To watch the video, press
(see page 12).
or
: Signal flow
VIDEO
VIDEO IN
LR
VIDEO OUT
AUDIO
L(MONO)
1
To video and audio outputs
To 1 (video input)
To ˘ (antenna)
from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual.
– 8 –
KV -XF21M31
RM-952
SECTION 1

GENERAL

5
Using Your New TV
Using Your New 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 ˘ (antenna) terminal, preset the signal
output from the VCR 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.
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.
Insert the batteries into the remote
Front of TV
ONE
-PUSH AUTOMATIC
PROGRAMING
1
1
ONE-PUSH AUTOMATIC PROGRAMMING
1
2
VHF
LOW
AUTO
Now You Are Ready. . .
To watch your TV, see page 11.
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 9).
6
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 picture of the connected equipment, press
(see page 12).
Connecting a camcorder/video game equipment 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 equipment using the Ú (monitor output) jacks
Note
When connecting a monaural VCR, connect the yellow plug to
(the
yellow jack) and the black plug to
-L (MONO) (the white jack).
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
Audio system
To audio inputs
VCR
: Signal flow
: Signal flow
To
2
(video input)
To Ú (monitor output)
or
Audio/Video cable (not supplied)
Antenna cable (not supplied)
Audio/Video cable (not supplied)
or
L(MONO)
1
ONE-PUSH
AUTOMATIC PROG
RAMING
2
– 9 –
KV-XF21M31
RM-952
8
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 automatically
1
Press U to turn on the TV.
2
Press AUTO PROGR.
To preset channels automatically from a specified program number
(1) Press SELECT until
AUT
O PROGRAM” appears.
(2) Press + or –.
The on-screen display will start flashing.
(3) Press PROGR +/– or the number buttons until the desir
ed program number
appears.
(4) Press + or –.
u
Number buttons
SELECT
. +/–
PROGR +/–
+ or –
PIC MODE
VHF
LOW
AUTO
ONE-PUSH AUTOMATIC PROGRAMING
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
7
Using Your New TV
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
A
B
3.8mm
or
10
KV -XF21M31
RM-952
9
Using Your New TV
Using Your New TV
b
b
or
b
Presetting channels manually
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 SELECT until
TV SYS appears.
(2) Press + or – to select the appropriate TV system until the picture or sound quality
is optimal.
continued
MANUAL PROGRAM
SELECT
VHF
LOW
B/G
1
2
3
4
5
6
7
8 0
-/--
9
PROGR
1
SELECT
TV SYS: B/G
B/G
I D/K
M
10
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 SELECT until
COL
SYS appears.
(2) Press + or – to select the appropriate color system until the color is optimal.
Tip
Normally set COL SYS to AUTO”.
Skipping program numbers
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 SELECT 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 SELECT until
MANUAL
PROGRAM” appears on the screen. (3) Press + or – on the remote control once. (4) Press
to display “FINE” on the scr
een.
(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.
Presetting channels (continued)
COL SYS: AUTO
AUTO
PAL SECAM
NTSC 3.58 NTSC 4.43
11
KV-XF21M31
RM-952
KV -XF21M31
12
Using Your New TV
Watching the TV (continued)
To
Turn off temporarily
Turn off completely
Mute the sound
Watch the video input (VCR, camcorder, etc.)
Jump back to the previous channel
Display the on-screen information*
Adjust the volume of each TV program automatically
Adjust the picture position when it is not aligned to the TV screen
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 SELECT repeatedly until
INTELLIGENT VOL
appears, then press + or – to select “ON”. To cancel, select
OFF.
Press SELECT repeatedly until
PIC ROT
ATION 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 /
: ENGLISHappears on the screen.
2
Press + or – to select “ “.
Tip
You can also use SELECT and . +/– on the TV to select the on-screen
display language.
Additional tasks
b
b
SELECT
LANGUAGE / : ENGLISH
/ LANGUAGE:
PIC ROTATION
11
Using Your New TV
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 –
JUMP
FAVORITE
or
continued
1
2
3
4
5
6
7
8 0
-/--
9
PROGR
ONE-PUSH AUTOMATIC PROGRAMING
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
RM-952
12
13
Using Your New TV
Using Your New TV
Setting the Wake Up timer
1
Press until the desired period of time appears.
2
Select the TV program or video mode you want to display when you wake up.
3
Press u 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 TVs main power.
Notes
The Wake Up timer starts immediately after the on-screen display disappears.
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.
To cancel the Sleep timer
Press until SLEEP TIMER: OFF appears or turn the TV of
f.
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
Advanced Operations
Advanced Operations
SOUND MODE
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.
PIC MODE
SELECT + or –
STANDARDDYNAMIC
SOFT
PIC MODE
DYNAMIC
DRAMA
SOFT
SOUND
MODE
TV
SOUND
MODE
FAVORITE
PROGR
Á
13
KV-XF21M31
RM-952
15
Advanced Operations
Advanced Operations
Adjusting the picture and sound settings
1
Press SELECT until the desired setting appears.
Each time you press SELECT, 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 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
¸
+/– on the TV to adjust the picture and
sound settings.
Selecting the surround mode
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.
MUSIC listen to the sound that gives the feeling of being at a live concert.
OFF turn off the surround sound.
b
b
SELECT
PICTURE 60
PICTURE COLOR
BRIGHT
HUE*
BALANCE TREBLE
BASS
SHARP
SELECT
SURROUND: MOVIE
MUSICMOVIE
OFF
16
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 from 1 to 6 to select the desired channel.
When you use the FAVORITE CH feature for the first time, six preset channels will appear.
FAVORITE
+ or –
PROGR +/–
Number buttons
Changing the favorite channel setting
1
Press SELECT until
FAVORITE CH SET UP
appears.
2
Press + or – to select the favorite 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 favorite channels.
5
Press SELECT.
b
b
b
b
or
FAVORITE CH
1PR01 2PR02 3PR03 4PR04 5PR05 6PR06
FAVORITE
1
2
3
4
5
6
1
SELECT
FAVORITE CH SET UP
1PR01 2PR02 3PR03
4PR04 5PR05 6PR06
1PR01 2PR02 3PR03 4PR04 5PR05 6PR06
FAVORITE CH SET UP
1
2
3
4
5
6
7
8 0
-/--
9
PR01
PR02PR08
PR04 PR05 PR06
123 456
FAVORITE CH SET UP
PROGR
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
14
KV -XF21M31
RM-952
17
Advanced Operations
Advanced Operations
Blocking the channels (CHILD LOCK)
You can prevent a child from watching certain programs by using the buttons on the remote control.
1
Select the TV program you want to lock.
2
Press SELECT until
CHILD LOCK appears on the screen.
3
Press + or to selectON”.
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.
SELECT
+ or –
CHILD LOCK: OFF
SELECT
CHILD LOCK: ON
1
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
18
Advanced Operations
Broadcasting On-screen display (Selected sound)
NICAM stereo
NICAM bilingual
NICAM monaural
Selecting a stereo or bilingual program
You can enjoy stereo sound or bilingual programs of NICAM 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 NICAM 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)
A/B
TV
SOUND
MODE
FAVORITE
PROGR
Á
15
KV-XF21M31
RM-952
KV -XF21M31
19
Advanced Operations
Advanced Operations
When receiving an A2 (German) program
Receiving area for NICAM and A2 (German) programs
Notes
If the signal is very weak, the sound becomes monaural automatically.
If the stereo sound is noisy when receiving a NICAM program, selectMONO. 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 scr
een.
To cancel the monaural sound setting, press A/B
again until
AUTO appears on the screen.
Notes
The MONO or AUT
O 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
AUT
O.
Broadcasting On-screen display (Selected sound)
A2 (German) stereo
A2 (German) bilingual
System
NICAM
A2 (German)
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
20
Advanced Operations
Viewing Teletext
TV stations broadcast an information service called Teletext via some TV channels. Teletext allows you to receive various information, such as shares market or news.
Displaying Teletext
1
Select a TV channel that carries the Teletext broadcast you want to watch.
2
Press
to display the
text.
A Teletext page (normally the index page) is displayed. If there is no Teletext broadcast, “100” is displayed at the top left corner of the screen.
To turn off Teletext
Press ;.
b
;
A/B
FASTEXT
V
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
P166 SECTEXT 166 FR1 MAR 03:59:09
Fom Singapore To PARIS
To OSAKA
To ROMA
To SYDNEY
Day Dep/Arr Flight Alrcraft
1.6 220/0588 SQ28 747 2 2130/1225 PA115 L15 3 2115/1330 SQ26 747
2.7 2130/0745 SQ24
747
4 2300/0915 AZ487 747
2.5 1000/1715 SQ6 747
4.6 0930/2015 CX522 L10
1 2210/0610 SQ21A 747 2 2100/0835 SQ21A 747
RM-952
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21
Advanced Operations
Advanced Operations
Additional Teletext tasks
To
display a Teletext page on the TV picture
check the contents of a Teletext service
select a Teletext page
hold a Teletext page (stop the page from scrolling)
reveal concealed information (e.g., an answer to a quiz)
enlarge the Teletext display
wait for a Teletext page while watching a TV program
* You can also select a Teletext page of any page number that appears in the
colored column at the bottom of the screen using the corresponding color­coded button on the remote.
Using FASTEXT
This feature allows you to quickly access a Teletext page that uses FASTEXT. When a FASTEXT program is broadcasted, the colored menus appear at the bottom of the screen. The colors of the menus correspond to the red, green, yellow, and blue color-coded buttons on the remote.
To access a FASTEXT menu
Press the color-coded button on the remote corresponding to the menu you want. The menu page appears on the screen after several seconds.
Do this
Press
.
Each time you press
, the screen changes as
follows: Teletext n Teletext and TV n TV.
Press
. An overview of the Teletext contents and page numbers appear on the screen.
Press the number buttons to enter the three-digit page number of the desired Teletext page.* If you make a mistake, reenter the correct page number. To access the next or previous page, press PROGR +/–.
Press
to display the symbol
j” at the top
left corner of the screen. To resume normal Teletext operation, press
or
.
Press
.
To conceal the information, press the button again.
Press A/B
.
Each time you press A/B
, the Teletext display changes as follows: Enlarge upper half n Enlarge lower half n Normal size.
1 Enter the Teletext page number that you want to refer to, then press
.
2 When the page number is displayed, press
to
show the text.
22
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 u indicator flashes red. The number of times the u indicator flashes indicates the possible causes.
1
Check that the u indicator flashes red a number of times between 3-second intervals.
2
Count the number of times the u indicator flashes.
3
Press U (main power) to turn off your TV.
4
Inform your nearest Sony service center about the number of times the u indicator flashes. Be sure to note the model name and serial number located on the rear of your TV.
Front of TV
ONE-PUSH AUTOMATIC PROGRAMING
u indicator
17
KV-XF21M31
RM-952
23
Additional Information
Additional Information
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
Check the antenna cable and connection on the TV, VCR and on the wall. (page 4)
Press SELECT until
MANUAL
PROGRAM appears on the screen then preset the channel again. (page 9)
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 (page 9), then press AUTO PROGR to preset the channels again (page 8).
If the sound of some channels are noisy, select the channel, then select the appropriate TV system (TV SYS). (page 9)
Check the power cord, antenna and the VCR 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.
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 power cord, antenna or VCR is not connected.
The TV is not turned on.
continued
24
Additional Information
Possible causeSymptom
Solutions
Good picture
No sound
Dotted lines or stripes
Double images or ghosts
No color
Abnormal color patches
TV cannot receive stereo broadcast signal
Press ¸ + to increase the volume level.
Press ¤ to cancel the muting.
Press A/B H until a better sound is
heard.
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.
(page 10)
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. (page 15)
Press SELECT until
COL
SYS appears on the screen, then check the color system setting (usually set this to
AUTO). (page 10)
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 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.
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.
Troubleshooting (continued)
KV -XF21M31
RM-952
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26
Additional Information
Identifying parts and controls
Refer to the pages indicated in parentheses ( ) for details.
Front panel
1
U
(main power) button (11)
2 PROGR +/ (program) buttons (11) 3
¸
+/– (volume) buttons (11)
4
(TV/video) button (12)
5 AUTO PROGR (program) button (5) 6 SELECT button (9) 7
2
(headphone) jack
ONE-PUSH AUTOMATIC PROGRAMING
ONE-PUSH AUTOMATIC PROGRAMMING
2
25
Additional Information
Additional Information
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.
Teletext display is incomplete (snowy picture or double images).
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.
A “boom” sound is heard when the TV is turned on.
Possible causeSymptom
Solutions
Check the antenna cable and connection on the TV, VCR and on the wall. (page 4)
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. (page 4)
Adjust the antenna direction. Contact a Sony dealer for advice.
Try using a booster.
Use the fine tuning (FINE) function.
(page 11)
Press SELECT until
PIC ROT
ATION appears on the screen, then press + or – to align the picture to the TV screen. (page 12)
Use the fine tuning (FINE) function. (page 10)
Contact your nearest Sony service
center. (page 22)
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 terrestrial magnetism affects your TV set.
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 TVs demagnetizing
function is working. This does not indicate a malfunction.
19
KV-XF21M31
RM-952
27
Additional Information
Additional Information
Remote Control
Button function
For general TV operations
For Teletext operations
1 u (power) button (11) 2 ; (TV) button (12) 3 Number buttons (11) 4 JUMP button (12) 5 PROGR +/ buttons (11) 6 SELECT button (9) 7 PIC MODE button (14) 8 +/ buttons (9) 9
(display) button (12)
¤ (muting) button (12) (video) button (12) !™ . +/ (volume) buttons (11)A/B button (18) Timer setting buttons (13)
(wake up timer) (sleep timer)
!∞ FAVORITE button (16)
SOUND MODE button (14)Teletext operation buttons (20, 21)
(text)
(enlarge)
(reveal)
(hold)
(index)
(text clear)
p
(FASTEXT: red, green, yellow, blue)
Names/symbols of buttons on the remote are indicated in different colors to represent the available functions.
Label color
White
Green
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
1
2
3
4
5
6
7
8
9
0
!™ !£
!∞
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
TV
20
KV -XF21M31
RM-952
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