4/1999 No revisions or updates are applicable at this time.
6/1999 CORRECTION-1 Updated CRT Part Number for KV-27S66
9/1999 CORRECTION-2 Updated DY Part Number
5/2001 SUPPLEMENT-1 New Model Added: KV-29SL43
8/2001 SUPPLEMENT-2 New Model Added: KV-29SL43C
8/2001 CORRECTION-3 Updated Part Number for Q550 (Pg. 55)
9/2003 CORRECTION-4 Added Connection Point to A Board Schematic (Replaced Pg. 31, 32, 33, & 34)
Updated History Information page (Replaced Pg. 1)
Updated last page to reect new service manual part number (Replaced last page)
Remote Commander with 2 size AA (R6) batteries
RM-Y167 (KV-29AL66/29AL66C/29SL46/27S46/27S66)
RM-Y165 (KV-29AL42/29AL42C/27S42/29XL42M/29SL42/29SL42C)
( ) SRS (SOUND RETRIEVAL SYSTEM)
Optional accessories
Connecting
Cables:VMC-810S/820S, VMC-720M.
YC-15V/20V , RK-74A
The ( ) SRS (SOUND RETRIEVAL SYSTEM) is manufactured by Sony Corporation under license from SRS Labs,
Inc. It is covered by U.S. Patent No. 4,748,669. Other U.S.
and foreign patents pending.
TV Stand:SU-27A4
U/V Mixer: EAC-66
Design and specifications are subject to change without notice.
— 2 —
The word ‘SRS’ and the SRS symbol ( ) are registered
trademarks of SRS Labs, Inc.
BBE and BBE symbol are trademarks of BBE Sound, Inc.
and are licensed by BBE Sound, Inc. under U.S. Patent
No. 4,638,258 and 4,482,866.
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
TABLE OF CONTENTS
SectionTitlePage
Warnings and Cautions ..................................................................................................................................... 4
Self-Diagnostic Function ................................................................................................................................... 4
2-7.Service Position ..................................................................................................................................... 12
6-3.Printed Wiring Boards and Schematic Diagrams ................................................................................. 2 6
• A Board .............................................................................................................................................. 27
• P Board .............................................................................................................................................. 3 5
• K Board .............................................................................................................................................. 3 7
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE MET AL CHASSIS, CRT SHIELD, OR CARBON
PAINTED ON THE CR T , AFTER REMOVING THE ANODE.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE TO A VOID POSSIBLE SHOCK HAZARD, BECAUSE OF
LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE AC POWER LINE.
SAFETY-RELATED COMPONENT W ARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS, AND IN THE PARTS
LIST ARE CRITICAL FOR SAFE OPERA TION. 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 OPERATION ARE IDENTIFIED IN THIS MANUAL.
FOLLOW THESE PROCEDURES WHENEVER CRITICAL
COMPONENTS ARE REPLACED OR IMPROPER OPERA TION IS
SUSPECTED.
A TTENTION
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'APP AREIL, OU AU COUCHE DE CARBONE PEINTE SUR LE
TUBE CA THODIQUE 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'ALIMENTA TION SECTEUR.
A TTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES P AR UNE TRAME ET P AR 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'IMPORTANCE 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 STANDBY/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 T est 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”.
Diagnostic ItemNo. of timesDisplay/Probable CauseDetected
* Power does not turn onDoes not light* Power cord is not plugged in.* Power does not come on.
* +B overcurrent (OCP)2 times2:0 or 2:1* H.OUT (Q502) is shorted. (A board)* Power does not come on.
* Vertical deflection4 times4:0 or 4:1* +13V is not supplied. (A board)* Has entered standby state after
stopped* horizontal raster.
lamp flashes
* Fuse is burned out (F5050) (E Board)* No power is suppled to the TV.
* AC power supply is faulty.
* IC1751 is shorted. (C board)* Load on power line is shorted.
* IC1701 is shorted. (CV board)
* IC 541 is faulty (A board)* Vertical deflection pulse is stopped.
* Power line is shorted or power supply
is stopped.
* White balance failure5 times5:0 or 5:1* Video OUT (Q306 to 308) is faulty.(A bd)* No raster is generated.
(not balanced)* IC301 is faulty. (A board)* CRT cathode current detection
* If a +B overcurrent is detected, stoppage of the vertical deflection is detected simulatneously. The symptom that is diagnosed first by the
microcontroller is displayed on the screen.
** Refer to Screen (G2) Adjustment in Section 3-4 of this manual.
* G2 is improperly adjusted**. reference pulse output is small.
— 4 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
STANDBY/TIMER LED
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Display of Standby/Timer LED Flash Count
2 times
4 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec.
Diagnostic ItemFlash Count*
+B overcurrent2 times
Vertical deflection stopped4 times
White balance failure5 times
*One flash count is not used for self-diagnostic.
LED OFF
3 sec.
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.
T o 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
Note that this differs from entering the service mode (sound volume
+
).
Self Diagnostic Screen Display
SELF DIAGNOSTIC
2:
3:
4:
5:
101:
N/A
N/A
0
0
0
1
0
Numeral “0” means that no fault was detected.
Numeral “1” means a fault was detected one time only.
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:
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
+B overcurrent (OCP)Occurs when an overcurrent on the +B (115V) line is detected by pin 18 of IC301. If the voltage
of pin 18 of IC 301 is less than 1V when V.SYNC is more than seven verticals in a period, the
unit will automatically turn off.
Ve rtical deflection stoppedOccurs when an absence of the vertical deflection pulse is detected by pin 17 of IC001. Power
supply will shut down when waveform interval exceeds 2 seconds.
White balance failureIf the RGB levels* do not balance within 2 seconds after the power is turned on, 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 1K.)
— 6 —
SAFETY CHECK-OUT
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
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 part 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 microampere). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson
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 batteryoperated 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 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 coldwater 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 —
Figure B. Checking for earth ground.Figure A. Using an AC voltmeter to check AC leakage.
The following are partial abstracts from the Operating Instruction
Manual. The page numbers shown reflect those of the Operating
Instruction Manual.
Connecting Your TV
This section covers basic connections in addition to any optional
equipment you may be connecting.
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, it will be necessary to
adjust the orientat ion of the antenna for best reception.
Cable and antenna
KV-27S66, 27V66 only
If your cable provider does not feature local channels, you may find this
set up convenient.
CATV cable
(No connection “TO
CONVERTER” in this case)
Antenna cable
✍ Select CABLE or ANT mode by pressing on the remote control.
(Rear of TV)
AUX
TO CONVERTER
VHF/UHF
User Guide
Connecting Additional Equipment
TV and VCR
2
1
From
Cable/
antenna
!
VCR must be connected and turned on to operate PIP. (KV-27S46 only)
1
Connect the coaxial cable from your TV antenna or cable TV 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 IN 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 inputs, for better picture quality
you should connect A/V cables to AUDIO and VIDEO OUT on your
VCR to AUDIO/VIDEO IN on your TV. You can use the button
to switch between the TV and VCR inputs.
✍
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.
VCR
(Optional connection)
3
TV
Connecting Your TV
TV and Cable Box
1
Connect the coaxial cable from the wall 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 IN 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).
✍
If you will be controlling all channel selection through your cable box, you
should consider using the CHANNEL FIX feature on page24.
34
User Guide
TV, Cable box and Cable
KV-27S 66 , 27V66 only
For this set up, you can switch between scrambled channels (through
your cable box), and normal (CATV) channels by pressing on your
remote control.
✍
When using PIP, the AUX input cannot be viewed in the window picture.
(Rear panel KV-27V66 only)
56
— 8 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Connecting Your TV
TV, VCR, and Cable box
TV
3
VCR
2
Cable box
1
Cable
1 Connect the coaxial cable from the wall 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 IN jack on the TV.
✍ If you will be controlling all channel selection through your cable box, you
should consider using the CHANNEL FIX feature on page24.
(Optional connection)
4 If your VCR is equipped with video inputs, for better picture quality
you should connect A/V cables to AUDIO and VIDEO OUT on your
VCR to AUDIO/VIDEO IN on your TV. You can use the button
to switch between the TV and VCR inputs.
✍ 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.
(Optional connection)
4
User Guide
TV and Digital Satellite Receiver
2
From
cable/
antenna
Satellite receiver
1
Satellite
antenna
cable
3
1 Connect the cable from your satellite antenna to SATELLITE IN on
the satellite receiver.
2 Attach the coaxial connector from your cable or antenna to
VHF/UHF IN on your TV.
3 Using A/V connectors, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your TV. You can use
the bu tton to switch between the satellite receiver and the TV.
✍ For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, your audio connectors must still be
connected.
TV
Connecting Your TV
TV, Digital Satellite Receiver and VCR
Satellite
antenna
1
4
VCR
Satellite receiver
1 Connect the cable from your satellite antenna to SATELLITE IN on
the satellite receiver.
2 Attach the coaxial connector from your cable or antenna to
VHF/UHF IN on your VCR.
3 Using a coaxial cable, connect VHF/UHF OUT on your VCR to
VHF/UHF IN on your TV.
4 Using A/V connectors, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your VCR.
5 Using A/V connectors, connect AUDIO and VIDEO OUT on your
VCR to AUDIO and VIDEO IN on your TV.
✍ To view from the satellite or VCR, select the video input to which your
satellite receiver or VCR is connected by pressing on the remote
control.
Cable
2
3
5
7
8
User Guide
Connecting a Camcorder
Using A/V cables, connect AUDIO and VIDEO OUT on your camcorder
TV
to AUDIO and VIDEO IN on your TV.
A/V output
(Front A/V Panel KV-27V42, 27V66 only)
✍ Connection can also be made to the rear A/V panel of your TV.
Connecting a DVD Player
Using A/V connectors, connect LINE OUT on your DVD to VIDEO IN
on your TV.
(Rear of DVD player)
A/V outputs
(Rear of TV)
✍ For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, your audio connectors must still be
connected.
Using audio connectors, connect AUDIO OUT on your TV to one of the
unused line inputs (e.g. TV, AUX, TAPE 2) on your stereo.
1
AUDIO-L
AUDIO-R
Line
input
2
✍ Set your stereo to the chosen line input. (See page 20 for additional audio
setup instructions.)
User Guide
Connecting two VCRs for Tape Editing
KV-27V42, 27V66 only
MONITOR OUT gives you the ability to use a second VCR to record a
program being played by the primary VCR to perform tape editing.
(Rear panel KV-27V66 only)
VCR (for playback)
1
1 Connect the VCR intended for playback using the setup instructions
on page 4 of this manual.
2 Using A/V connectors, connect AUDIO and VIDEO IN on your VCR
intended for recording to MONITOR AUDIO and VIDEO OUT on
your TV.
✍ To perform tape editing; set the TV to the video input intended for playback
by pressing
on the remote control.
VCR (for recording)
2
11
User Guide
Troubleshooting
If you are having a problem with your TV, try the suggestions below. If
the problem persists, contact your nearest Sony dealer.
Cannot operate
single tuner
PIP (KV-27S46)
No picture, no
sound
Poor or no
picture, good
sound
Good picture,
no sound
No color❏ Adjust COLOR in the VIDEO menu (page 19).
Only snow
appears on the
screen
❏ Make sur e the VCR is connect ed correctly (see page 4).
❏ Check to see if the VCR is on.
❏ Make sure your remote control is programmed to
operate your VCR (see page 31).
❏ Make sure the power cord is plugged in.
❏ If a red light is flashing on the front of your TV for
more than a few minutes, call your local service center.
❏ Check the TV/VIDEO set tings: whe n watching TV, set
to TV; when watching video equipment, set t o VIDEO
(page 19).
❏ Make sure the batteries have been inserted correctly
into the remote control.
❏ Check your PARENTAL CONTROL settings (pages
28-29).
❏ Try another channel, it could be station trouble.
❏ Adjust PICTURE in the VIDEO menu (page 19).
❏ Adjust BRIGHTNESS in the VIDEO menu (page19).
❏ Check the antenna and/or cable connections (page 3).
❏ Press so that MUTING disappears from the
screen (page 13).
❏ Check your AUDIO settings. Your TV may be set to
SAP (page 21).
❏ Check the CABLE setting in the CHANNEL SET UP
menu (page 24).
❏ Check the antenna and/or cable connections (page 3).
❏ Make sure the channel selected is currently
broadcasting.
❏ Press the button on the remote control.
12
Other Information
Dotted lines or
stripes
Double images
or ghosts
Cannot receive
higher number
channels (UHF)
when using an
antenna
Cable stations
don’t seem to
work
Remote
Control does
not operate
The TV needs
to be cleaned
Lost password
for PARENTAL
CONTROL
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).
❏ 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.
❏ Make sure CABLE is set to OFF in the CHANNEL SET
UP menu (page24).
❏ Use AUTO PROGRAM to add channels that are not
presently in the memory (page24).
❏ Make sure CA BLE is set t o ON in the CHANNEL S ET
UP menu (page24).
❏ Use AUTO PROGRAM to add channels that are not
presently in the memory (page24).
❏ Batteries could be weak. Replace them (page 2).
❏ Move the TV 3-4 feet away from fluorescent lights.
❏ 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.
❏ In the password screen, enter the following master
password: 4357. After using the master pass word, you
must create a new password, it cannot be used to
unlock currently blocked channels.
High voltage remains in the CRT even
after the power is disconnected. To
avoid electric shock, discharge CRT
before attempting to remove the anode
cap. Short between anode and CRT
coated earth ground strap.
Coated Earth
Ground Strap
T ension Spring
Degaussing Coil
Deflection Y oke
T w o DGC holders (M)
(KV-29AL66/29AL66C/
29AL42/29AL42C)
Four Screws
(T apping scre w 7)
Anode Cap
E board
C / CV
board
A board
K board
HV board
(KV-29AL66/29AL66C/
29AL42/29AL42C)
Picture tube
Cushion
(KV-29AL66/29AL66C/
27S66/29AL42/
29AL42C)
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
Use your thumb to pull the rubber
a
.
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.
— 13 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
Blue Red
Green
29AL66C/29SL42/29SL42C/29SL46/29XL42M
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: Test 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.
Purity Control
3. Turn 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.
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
corrects this area
ba
Disk magnets
or rotatable disk
cd
Deflection yoke positioning
corrects these areas
magnets correct
these areas (a-d)
a
c
b
d
— 14 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
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)
Center dot
R G B
R
G
B
V.STAT magnet
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. Static
convergence.
2. Rotate BMC magnet (b) to correct insufficient V. Static
convergence.
3. After adjusting the BMC magnet, repeat Beam Landing
Adjustment.
PURITY
V. STAT
BMC MAGNET
BMC magnet
a
2. Tilt the V.STAT magnet and adjust static convergence to
open or close the V.STAT magnet.
When the V.STAT 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
a
b
B
G
R
BGR
b
RGB
a
R
G
b
b
B
G
R
B
G
B
R
b
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 below:
1. Using a Variac, apply AC input voltage: 120 ± 2 VAC
(or 120-220 ± 2 VAC for KV-29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M only.)
2. Turn the POWER switch ON.
3. Input a white signal and set the PICTURE and
BRIGHTNESS controls to maximum.
4. Confirm that the voltage between C574 (+) or TP503
and ground is more than 105 VDC.
Hold-down Readjustment
If the setting indicated in step 2 of Hold-down Operation
Confirmation cannot be met, readjustment should be performed
by altering the resistance value of R584, components marked
with
.
T504
FBT
ammeter
3.0 mA DC
range
ABL
+
A
IABL
-
4-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Note: The following adjustments should always be performed
when replacing the following components, which are marked
with
on the schematic diagram on schematic diagram.
Hold-down Operation Confirmation
1. Connect the current meter between Pin 11 of the FBT
(T505) and the PWB land where Pin 11 would normally
attach. (See Figure 1 on the next page.)
2. Input a dot signal and set PICTURE and BRIGHTNESS
to minimum: IABL = 100 + 100/-95 µA.
3. Confirm the voltage of A Board TP-600 is 135 ± 3 VDC.
4. Connect the digital voltmeter and the DC power supply
via diode 1SS119 to C574 (+) and ground. (See Figure 1 on
the next page.)
5. Increase the DC power voltage gradually until the picture
blanks out.
6. Turn DC power source off immediately.
7. Read the digital voltmeter indication
(Standard: less than or equal to 141.3 VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS
to maximum.
9. Repeat steps 4 to 7.
IC601, IC602
1. Using a Variac, apply AC input voltage: 130 ± 2 VAC
(or 120-220 ± 2 for KV-29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M only.)
2. Input a dot signal.
3. Set the PICTURE and BRIGHTNESS controls to minimum.
4. Set to service adjustment mode.
5. Select PADJ with
6. Adjust with
7. Confirm that the voltage of A Board TP-600 is less than
138 VDC.
8. If step 7 is not satisfied, replace the components listed
above, then repeat the above steps.
See ID map
See ID map
See ID map
See ID map
See ID map
See ID map
See ID map
See ID map
*2: TV/VIDEO
SERVICE ID0 25
Notes:
Item numbers 1-122 show the sequence of adjustments that may be selected while in service mode.
Data Range indicates the range of possible settings for each adjustment mode.
Initial Data indicates the standard settings for each adjustment mode.
— 20 —
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