Design and specifications are subject to change without notice.
— 2 —
KV-29FS12A
TABLE OF CONTENTS
SectionTitlePage
Warnings and Cautions ....................................................................................................................................... 4
Self-Diagnostic Function ...................................................................................................................................... 4
2-3.Service Position ...................................................................................................................................... 14
R564 Confirmation Method (HV Hold-Down Confirmation and Readjustments) ................................. 20
• A Board .............................................................................................................................................. 38
• MA Board............................................................................................................................................ 45
• CA Board............................................................................................................................................ 51
• K Board .............................................................................................................................................. 53
• V A Board ............................................................................................................................................ 54
• D Board .............................................................................................................................................. 55
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.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED
DURING ANY SERVICE TO AVOID POSSIBLE SHOCK
HAZARD, BECAUSE OF LIVE CHASSIS. THE CHASSIS
OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE
AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS,
AND IN THE PARTS LIST ARE CRITICAL FOR SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL FOR SAFE OPERA TION ARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED
OR IMPROPER OPERATION IS SUSPECTED.
ATTENTION!!
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER
L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU
CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE
PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR D'ISOLEMENT DOIT ETRE
UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE RÉCEPTEUR EST
DIRECTEMENT RACCORDÉ À L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS
LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES P AR SONY.
LES REGLAGES DE CIRCUIT DONT L'IMPORT ANCE EST CRITIQUE POUR
LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE
PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONTIONNEMENT SUSPECTE.
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the ST ANDBY/TIMER LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER LED 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.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there is
more than one error, the LED will identify the first of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.
— 4 —
Display of Standby/Timer LED Flash Count
2 times
4 times
5 times
KV-29FS12A
LED ON 0.3 sec.
LED OFF 0.3 sec.
LED OFF
3 sec.
STANDBY/TIMER LED
Diagnostic ItemFlash Count*
+B overcurrent2 times
I-Prot4 times
IK5 times
*One flash count is not used for self-diagnostic.
Stopping the Standby/Timer LED 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.
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 occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:
DisplayChannel
5
Sound volume
Power ON
Self-Diagnostic Screen Display
SELFDIAGNOSTIC
2:000
Numeral0meansthatnofaultwasdetected.
3:N/A4:0005:001
Numeral1meansafaultwasdetectedonetimeonly.
101:N/A
Note that this differs from entering the service mode (sound volume
— 5 —
+
).
KV-29FS12A
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 when the diagnostic screen is displayed,
as shown below:
8
ENTERChannel
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn of f the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
FROM
CA BOARD
CN705 PIN 1
FROM
A BOARD
IC501 PIN 3
MA BOARD
IC301
Y/CHROMA JUNGLE
IK IN
36
HP/PROTECT
33
SDA
A BOARD
IC502
V. OUT
3
REF
61
5
43
MA BOARD
IC001
SYSTEM
I-PROT
IO-SDAT
IO-BDAT
O-LED
42
22
DISPLAY
MA BOARD
MEMORY
B-DAT
5
IC003
+B overcurrent (OCP)Occurs when an overcurrent on the +B (135V) line is detected by pin 33 of IC301 (MA Board). If
the voltage of pin 33 of IC301 (MA Board) is less than 1V when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
I-ProtOccurs when an absence of the vertical deflection pulse is detected by pin 5 of IC001 (MA
Board). Power supply will shut down when waveform interval exceeds 2 seconds.
IKIf the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be
detected by IC301 (MA Board). TV will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
— 6 —
SAFETY CHECK-OUT
KV-29FS12A
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
1. Check the area of your repair for unsoldered or poorly
soldered connections. Check the entire board surface
for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.
Be absolutely certain that you have replaced all the
insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair .
Point them out to the customer and recommend their
replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.
6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate;
be suspicious of your HV meter if sets always have
low HV .
8. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.
Leakage Test
The AC leakage from any exposed metal p art to earth
ground and from all exposed metal parts to any exposed
metal part having a return to chassis, must not exceed 0.5
mA (500 microamperes). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester , such as the Simp son 229
or RCA WT-540A. Follow the manufacturers'
instructions to use these instructions.
2. A battery-operated AC milliammeter . The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The “limit”
indication is 0.75 V , so analog meters must have an
accurate low voltage scale. The Simpson’s 250 and
Sanwa SH-63TRD are examples of passive VOMs that
are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable
(see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the coverplate retaining screw on most AC outlet boxes is also at earth
ground. If the retaining screw is to be used as your earth
ground, verify that it is at ground by measuring the resistance
between it and a cold-water pipe with an ohmmeter. The
reading should be zero ohms. If a cold-water pipe is not
accessible, connect a 60- to 100-watt trouble- light (not a
neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary , to locate the hot
side on the line; the lamp should light at normal brilliance if the
screw is at ground potential (see Figure B).
— 7 —
Trouble Light
AC Outlet Box
Figure B. Checking for earth ground.Figure A. Using an AC voltmeter to check AC leakage.
Ohmmeter
Cold-water Pipe
The instructions mentioned here are partial abstracts from the Operating Instruction Manual.
4
Operating Instructions
Cable Box Connections
Some pay cable TV systems to use scrambled or encoded signals that
requireacableboxtoviewallchannels.
Cable Box
1
Connect the coaxial cable from your cable service to the IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the VHF/UHF jack on your TV.
Cable Box and Cable
For this set up, you can switch between scramble channels (through your
cable box), and normal (CATV) channels by using thebutton.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
If you are connecting a cable box through the AUX input and would like to
switch between the AUX and normal (CATV) input, you should consider using
the Channel Fix feature, (see page 26).
Your Sony remote control can be programmed to operate your cable box,
(see page 36).
When using PIP, you cannot view the AUX input in the window picture.
Cable
IN
OUT
(Rear of TV)
VHF/UHF
Cable Box
Cable Box
(Rear of TV)
AUX
OUT
IN
TO CONVERTER
(Signal)
VHF/UHF
75-ohm coaxial cable (not supplied)
CATV cable (unscrambled channels)
The page numbers shown reflect those of the Operating Instruction Manual.
Connecting Your TV
Read this chapter before s etting up your TV for the first time. This section
covers basic connections in addition to any optional equipment you may
be connecting.
KV-29FS12A
SECTION 1 GENERAL
— 8 —
Basic Connections
TV with indoor or outdoor antenna, or CATV cable
Depending on the cable available in your home, choose one of the
connections below:
If you are connecting to an indoor or outdoor antenna, you may need to
adjust the orientation of the antenna for best reception.
3
Connecting Your TV
6
Operating Instructions
TV and Cable Box
1
Connect the coaxial cable from your cable service to th e IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the VHF/UHF jack on the TV.
To view channels from your cable box, tune your TV to channel 3 or 4 (as set
on the rear panel of your cable box) and use the cable box’s remote control to
change channels.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
1
cable
2
Cable Box
Rear of TV
From
Connecting Additional Equipment
TV and VCR
1
From
cable/
antenna
— 9 —
1 Connect the coaxial cable from your TV antenna or cable service to
the IN jack on your VCR.
2 Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF jack on the TV.
To watch video programs from your VCR, tune your TV to channel 3 or 4 (as
set on the rear of your VCR).
(Optional connection)
3 If your VCR is equipped with video outputs, you can get better
picture quality by connecting A/V cables (not supplied) from
AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on
your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
2
VCR
(Optional connection)
3
Rear of TV
You can use the button to switch between the VHF/UHF and VIDEO
inputs.
KV-29FS12A
5
TV, Cable box, and Cable
8
Operating Instructions
TV, VCR, and Cable box
1
Connect the coaxial cable from your cable service to the IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the IN jack on your VCR.
3
Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF jack on the TV.
(Optional connection)
4
If your VCR is equipped with video outputs, you can get better
picture quality by connecting A/V cables (not supplied) from
AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on
your TV.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and VIDEO
inputs.
3
Cable
4
(Optional connection)
Cable box
1
VCR
2
Rear of TV
KV-27FS16, KV-27FV16, KV-32FS16, KV-29FV16 only
For this set up, you can switch between scrambled channels (through
your cable box) and normal (CATV) channels by pressing.
Cable Box
KV-29FS12A
Connecting Your TV
Rear of TV (KV-27FV16 only)
— 10 —
When using PIP, the AUX input cannot be viewed in the window picture.
From
Cable
7
Connecting Your TV
10
Operating Instructions
TV, Satellite Receiver, and VCR
1
Connect the cable from your satellite antenna to SATELLITE IN on
your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the
IN jack on your VCR.
3
Using a coaxial cable, connect the OUT jack on your VCR to the
VHF/UHFjackonyourTV.
4
Using A/V cables, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your VCR.
5
Using A/V cables, connect AUDIO and VIDEO OUT on your VCR to
AUDIO and VIDEO IN on your TV.
To view from the satellite receiver or VCR, select the video input to which
your satellite receiver or VCR is connected by pressing on the remote
control.
AUDIO R AUDIO L VIDEO
VHF/UHF
OUT
IN
LINE OUT
LINE IN
VHF/UHF
OUT
IN
SATELLITE IN
AUDIO R AUDIO L VIDEO
LINE OUT
Satellite receiver
4
5
2
3
1
Rear of TV
VCR
Satellite
antenna
From
antenna
cable/
cable
TV and Satellite Receiver
Satellite receiver
SATELLITE IN
LINE OUT
AUDIO R AUDIO L VIDEO
3
Satellite
antenna
cable
1
2
From
cable/
antenna
VHF/UHF
IN
OUT
— 11 —
1
Connect the cable f rom your satellite antenna to SATELLITE IN on
your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the
VHF/UHFjackonyourTV.
3
Using A/V cables, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and satellite
receiver inputs.
Rear of TV
KV-29FS12A
9
Using the Remote Control and
Using the Remote Control and Basic Functions
15
SLEEPTurns the TV off automatically in
approximately 15, 30, 45, 60, 90,
or 120 minutes. Cancel by
pressing until SLEEP OFF
appears.
MTS/SAPCycles through the
Multi-channel TV Sound (MTS)
options: Stereo, Mono, and
Auto-SAP (Second Audio
Programming).
DISPLAYPress once to show current time,
(if set) and channel number.
Cycles through available Steady
Sound settings, (see page 23).
JUMPAlternates between the last two
channels selected with the
buttons.
GUIDEBrings up the custom guide of
your satellite receiver.
MENUDisplays the on-screen menu.
Press again to exit the menu at
any time.
RESETPress to return to factory settings
while in an on-screen menu.
CODE SETUse to program your remote
control to operate connected
video equipment, (see page 36).
For information on Picture in Picture (PIP) operation buttons, see page 17.
If you lost your remote control, see page 40.
0 9
Basic Functions
This section shows you how to use the more advanced buttons on the
remote control and how to use the on-screen menus.
Using the Remote Control
KV-29FS12A
— 12 —
/
The remote control shown (RM-Y171) is for KV-27FV16. Your remote control
may not look like the one illustrated.
ButtonDescription
POWERPress when you want to turn
FUNCTIONPress when you want to control
MUTINGInstantly turns off the sound.
SYSTEM
OFF
TV/VIDEOCycles through available video
ANTPress to change the VHF/UHF
TV/VTRPress when you are finished
PICTURE
MODE
14
connectedequipmentonandoff.
connected equipment with your
remote control.
Press again or pressto restore
sound.
Powers off all Sony equipment at
once, (may not work with older
equipment).
inputs.
input to the AUX input
(KV-27FS16, KV-27FV16,
KV-32FS16 only).
using a VCR and you want to
switch to the TV input. Your
VCR power will remain on.
Moves the cursor in the onscreen menus. Press the arrow
buttons to move the cursor. Press
the center button to select or
access an option.
Cycles through the available
Video Mode settings.
Other Information
40
Operating Instructions
If, after reading these Operating Instructions, you have additional questions related to the use of your
Sony television, please call our Direct Response Center at 1-800-222-SONY (7669) (U.S. residents
only) or (416) 499-SONY (7669) (Canadian residents only).
Cannot receive
higher number
channels(UHF)
when using an
antenna
Make sure Cable is set to OFF in the Channel Setup
menu (page 25).
Perform Auto Program to add channels that are not
presently in the memory (page 16).
Cable stations
don’t seem to
work
Make sure Cable is set to ON in the Channel Setup
menu (page 25).
Perform Auto Program to add channels that are not
presently in the memory (page 16).
Remotecontrol
does not
operate
Batteries could be weak. Replace them (page 2).
Move the TV 3-4 feet away from fluorescent lights.
The TV needs
to be cleaned
Clean the TV with a soft dry cloth. Never use strong
solvents such as thinner or benzine, which might
damage the finish of the cabinet.
Lost password
for Parental
Control
In the password screen, enter the following master
password: 4357. After using the master password, you
must create a new password, it cannot be used to
unlock currently blocked channels.
You lost your
remote control
You can use the front A/V panel controls to access the
menu. Pressto open the menu. Use theor
buttons on the front A/V panel instead of the
F or
buttons on the remote control. Use thebutton on
the front A/V panel instead of the
G, g
,and
buttons on the remote control. Pressagain when
the setting or adjustment is complete. Contact your
nearest S ony dealer to order a replacement.
Cannot access
other menus
whenusing the
Basic Menu
If you use thebutton to close the Basic menu, only
the Basic menu appears when you pressagain. To
have access to the other menus, use the button to
select Advance Menu (page 35).
F
F
Troubleshooting
If you are having a problem with your TV, try the suggestions below. If
the problem persists, contact your nearest Sony dealer.
— 13 —
No picture, no
sound
Poor or no
picture, good
sound
Good picture,
no sound
No color
No signal
Dotted lines or
stripes
Double images
or ghosts
Make sure the power cord is plugged in.
If red light is flashing on the front of your TV for more
than a few minutes, disconnect and reconnect the
power cord to restore the TV. If the problem continues,
call your local service center.
Check the TV/VIDEO settings: when watching TV, set
to TV; when watching video equipment, set to VIDEO
(page 14).
Make sure the batteries have been inserted correctly
into the remote control (page 2).
Try another channel, it could be station trouble.
Adjust Picture in the Video menu (page 22).
Adjust Brightness in the Video menu (page 22).
Check the antenna and/or cable connections (page 3).
Check your Audio settings. Your TV may be set to
Auto-SAP (page 24).
Adjust Color in the Video menu (page 22).
Check the Cable setting in the Channel Setup menu
(page 25).
Check the antenna and/or cable connections (page 3).
Make sure the channel selected is currently
broadcasting.
Adjust the antenna.
Move the TV away from other electronic equipment.
Some electronic equipment can create electrical noise,
which can interfere with TV reception.
Check your outdoor antenna or call your cable service.
KV-29FS12A
39
KV-29FS12A
2-1. REAR COVER REMOV AL
SECTION 2
DISASSEMBLY
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Rear Cover
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
2-2. CHASSIS ASSEMBL Y REMOVAL2-3. SERVICE POSITION
CA Board
VA Board
Claw
Chassis
Assembly
MA Board
D Board
A Board
— 14 —
2-4. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
KV-29FS12A
1
10
High voltage remains in the CRT
even after the power is disconnected.
T o avoid electric shock, discharge
CRT before attempting to remove the
9
8
7
anode cap. Short between anode and
CRT coated earth ground strap.
6
5
Coated
Earth
Ground
Strap
1.Discharge the anode of the CRT and remove the anode cap.
2.Unplug all interconnecting leads from the deflection yoke, neck
assembly, degaussing coils and CR T grounding strap.
3.Remove the CA Board from the CRT.
4.Remove the chassis assembly.
5.Loosen the neck assembly fixing screw and remove.
2
3
4
6.Loosen the deflection yoke fixing screw and remove.
7.Place the set with the CR T face down on a cushion and remove
the degaussing coil holders.
8.Remove the degaussing coils.
9.Remove the CRT grounding strap and spring tentioners.
10. Unscrew the four CRT fixing screws [located on each CRT
corner] and remove the CRT [Take care not to handle the
CRT by the neck].
ANODE CAP REMOV AL
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
NOTE: After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield,
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
or carbon painted on the CRT.
REMOVAL PROCEDURES
c
b
a
Anode Button
1
Turn up one side of the rubber cap in
the direction indicated by arrow
2
a
.
Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow
b
.
3
When one side of the rubber cap
separates from the anode button,
the anode cap can be removed by
turning the rubber cap and pulling
it in the direction of arrow
c
.
HOW TO HANDLE AN ANODE CAP
1
Do not use sharp objects which may cause damage to the
surface of the anode cap.
2
To avoid damaging the anode cap, do not squeeze the rubber
covering too hard. A material fitting called a shatter-hook terminal
is built into the rubber.
3
Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
— 15 —
KV-29FS12A
SECTION 3
SET -UP ADJUSTMENTS
The following adjustments should be made when
a complete realignment is required or when a new
picture tube is installed.
These adjustments should be performed with rated
power supply voltage unless otherwise noted.
Set the controls as follows unless otherwise noted:
VIDEO MODE: ST ANDARD
PICTURE control: ................ Normal
BRIGHTNESS control: ........ Normal
3-1. BEAM LANDING
Before beginning adjustment procedure:
1. Degauss the entire screen.
2. Feed in the white pattern signal.
Adjustment Procedure
1. Input a raster signal with the pattern generator .
2. Loosen the deflection yoke mounting screw and set the purity
control to the center as shown below.
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Note: T est equipment required:
• Color Bar Pattern Generator
• Degausser
• DC Power Supply
• Digital Multimeter
5. Move the deflection yoke forward and adjust so that the entire
screen becomes green.
6. Switch over the raster signal to red and blue and confirm
the condition.
7. When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.
8. If landing at the corner is not right, adjust by using the disk
magnets.
Purity Control
3. T urn the raster signal of the pattern generator to green.
4. Move the deflection yoke backward and adjust the purity
control so that green is in the center and red and blue are
at the sides evenly.
Blue Red
Green
Diskmagnetsorrotatablediskmagnetscorrect
theseareas(a-d)
b
d
Puritycontrol
correctsthisarea
ba
cd
Deflectionyokepositioning
correctstheseareas
a
— 16 —
c
KV-29FS12A
3-2. CONVERGENCE
Before starting convergence adjustments:
1. Perform FOCUS, V.LIN AND V .SIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Feed in dot pattern.
Vertical Static Convergence
1. Adjust V.STAT magnet to converge red, green and blue
dots in the center of the screen (Vertical movement adjust
V .STAT RV701 to converge).
RGB
Centerdot
RV701
V.STAT
RGB
V.STATmagnet
Horizontal Static Convergence
If the blue dot does not converge with the red and green dots,
perform the following:
1. Move BMC magnet (a) to correct insufficient H. S tatic
convergence.
2. Rotate BMC magnet (b) to correct insufficient V. Static
convergence.
3. After adjusting the BMC magnet, repeat Beam Landing
Adjustment.
V.S TAT
BMC MAGNET
PURITY
2. T ilt the V.STAT magnet and adjust static convergence to open
or close the V.STA T magnet.
When the V.STA T magnet is moved in the direction of arrows
a and b, red, green, and blue dots move as shown below:
(1)
a
b
(2)
a
(3)
b
b
b
a
b
a
B
G
R
BGR
RGB
R
G
B
b
B
G
R
B
G
R
b
BMCmagnet
Dynamic Convergence Adjustment
Before performing this adjustment, perform Horizontal
and Vertical Static Convergence Adjustment.
1. Slightly loosen deflection yoke screw .
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence
as shown on the following page.
— 17 —
KV-29FS12A
RGB
BGR
RGB
RGB
BG
R
BGR
RGB
G
B
4. Adjust XCV core to balance X axis.
BGR
5. Adjust YCH VR to balance Y axis.
6. Adjust vertical red and blue convergence with V.TIL T
(TLV VR).
Note: Perform adjustments 3-6 while tracking items 1 and 2.
BGRRGB
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the
misconverged areas.
RGB
R
b
a
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
TLH Plate Adjustment
1. Input crosshatch pattern.
2. Adjust PICTURE QUALITY to standard, PICTURE and
BRIGHTNESS to 50%, and OTHER to standard.
3. Adjust the Horizontal Convergence of red and blue dots
by tilting the TLH plate on the deflection yoke.
RV701
V.STAT
CA
Board
VA
Board
TLH Plate
XCV
YCH
TLV
a-d:screen-corner
d
c
3-3. FOCUS
1. Adjust FOCUS control for best picture.
ba
misconvergencecd
B R R B
(R)(B) (B)(R)
TLH+
TLH-
(TLV)
Focus (FV)
Screen (G2)
— 18 —
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