Sony Trinitron KV-27S42 User manual

TRINITRON®COLOR TELEVISION
SERVICE MANUAL BA-4D CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
9-965-857-01
KV-27S42 RM-Y165 US SCC-S27H-A
KV-27S42 RM-Y165 CND SCC-S28F-A
KV-27S46 RM-Y167 US SCC-S27K-A
KV-27S66 RM-Y167 US SCC-S27L-A
KV-27S66 RM-Y167 CND SCC-S28G-A
KV-29AL42 RM-Y165 E SCC-S25U-A
KV-29AL42C RM-Y165 E SCC-S25Y-A
KV-29AL66 RM-Y167 E SCC-S25T-A
KV-29AL66C RM-Y167 E SCC-S25V-A
KV-29SL42 RM-Y165 E SCC-S25W-A
KV-29SL42C RM-Y165 E SCC-S25S-A
KV-29SL46 RM-Y167 E SCC-S25X-A
KV-29XL42M RM-Y165 MX SCC-S26C-A
KV-29SL43 RM-Y165 E SCC-S55C-A
KV-29SL43C RM-Y165 E SCC-S55D-A
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 4/1999
ALL REVISIONS AND UPDATES TO THE ORIGINAL MANUAL ARE APPENDED TO THE END OF THE PDF FILE.
REVISION DATE REVISION TYPE SUBJECT
6/1999 CORRECTION-1 CRT PART NUMBER CORRECTION FOR KV-27S66
9/1999 CORRECTION-2 DY PART NUMBER CORRECTION
5/2001 SUPPLEMENT-1 NEW MODEL ADDED: KV-29SL43
8/2001 SUPPLEMENT-2 NEW MODEL ADDED: KV-29SL43C
8/2001 CORRECTION-3 Q550 PART NUMBER CORRECTION-PAGE 55

SERVICE MANUAL
BA-4D CHASSIS
MODEL COMMANDER DEST CHASSIS NO.
KV-27S42 RM-Y165 US SCC-S27H-A
KV-27S42 RM-Y165 CND SCC-S28F-A
KV-27S46 RM-Y167 US SCC-S27K-A
KV-27S66 RM-Y167 US SCC-S27L-A
KV-27S66 RM-Y167 CND SCC-S28G-A
KV-29AL42 RM-Y165 E SCC-S25U-A
KV-29AL42C RM-Y165 E SCC-S25Y-A
KV-29AL66 RM-Y167 E SCC-S25T-A
KV-29AL66C RM-Y167 E SCC-S25V-A
KV-29SL42 RM-Y165 E SCC-S25W-A
KV-29SL42C RM-Y165 E SCC-S25S-A
KV-29SL46 RM-Y167 E SCC-S25X-A
KV-29XL42M RM-Y165 MX SCC-S26C-A
TRINITRON®COLOR TV
RM-Y167KV-29AL66
MICROFILM

— 2 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
KV-29SL46
KV-27S46 KV-29AL42 KV-29AL66C KV-29XL42M
KV-27S42 KV-27S66 KV-29AL42C KV-29AL66 KV-29SL42
KV-29SL42C
120-220V 120-220V 120-220V
Power Requirements 120V,60Hz 120V,60Hz 50/60Hz 50/60Hz 50/60Hz
Number of input/outputs
Video1) 12 231,2(KV-29SL46)
S Video2) 11 111
Audio3) 12 231,2(KV-29SL46)
Audio Out4) 11 111
Monitor Out -- -1-
Speaker Output(W) 5WX2 5WX2 10WX2 10WX2 5WX2
Power Consumption(W) 150W(KV-27S66)
In Use (Max) 140W 140W (KV-27S46) 170W 180W 140W
In Standby 2W 2W 3W 3W 3W
Dimensions(W/H/D)
(mm) 660.4X598 660.4X598 767.4X579.7 767.4X579.7 660.4X598
X505.5mm X505.5mm X547.7mm X547.7mm X505.5mm
(in.) 26x239/16x20in 26x239/16x20in 301/4X227/8x215/8in 301/4X227/8x215/8in 26x239/16x20in
Mass (Kg) 39kg 39kg 42kg 42kg 39kg
(lbs) 86lbs 86lbs 93lbs 93lbs 86lbs
SPECIFICATIONS
Television system
American TV standard/NTSC
Channel coverage
VHF:2-13 / UHF:14-69 / CATV:1-125
Picture tube
Trinitron®tube
Visible screen size
27-inch picture measured diagonally
29-inch picture measured diagonally
Antenna
75 ohm external antenna terminal for VHF/UHF
Supplied accessories
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)
Optional accessories
Connecting
Cables: VMC-810S/820S, VMC-720M.
YC-15V/20V, RK-74A
TV Stand: SU-27A4
U/V Mixer: EAC-66
Design and specifications are subject to change without notice.
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1 Vp-p 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
3) 500 mVrms (100% modulation), Impedance: 47 kilohms
4) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fix); Impedance: 5 kilohms
( ) SRS (SOUND RETRIEVAL SYSTEM)
The( )SRS(SOUND RETRIEVAL SYSTEM)is manufac-
tured 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.
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.

— 3 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Section Title Page
Warnings and Cautions..................................................................................................................................... 4
Self-Diagnostic Function ................................................................................................................................... 4
Safety Check-Out Instructions ........................................................................................................................... 7
1. GENERAL ............................................................................................................................................................ 8
2. DISASSEMBLY
2-1. Rear Cover Removal (KV-27S46/27S66) .............................................................................................................. 11
2-2. Rear Cover Removal (KV-29SL42/29C/29SL46/29XL42M) .................................................................................. 11
2-3. Rear Cover Removal (KV-29AL42/42C/29AL66/66C) .......................................................................................... 11
2-4. Control Switch Removal (KV-29AL42/42C/29AL66/66C).................................................................................... 11
2-5. Chassis Assembly Removal (KV-27S46/27S66/29SL42/29C/29SL46/29XL42M)............................................. 12
2-6. Chassis Assembly Removal (KV-29AL42/42C/29Al66/66C).............................................................................. 12
2-7. Service Position ..................................................................................................................................... 12
2-8. Picture Tube Removal........................................................................................................................... 13
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ....................................................................................................................................... 14
3-2. Convergence.......................................................................................................................................... 15
3-3. Focus ..................................................................................................................................................... 16
3-4. Screen (G2)............................................................................................................................................ 16
3-5. Method of Setting the Service Adjustment Mode ...................................................................................16
3-6. White Balance Adjustments .................................................................................................................. 16
4. SAFETY RELATEDADJUSTMENTS
4-1. R582 and R584 Confirmation Method (HV Hold-Down Confirmation and Readjustments) .......... 17
4-2. B+ Voltage Confirmation and Adjustment ............................................................................................. 17
5. CIRCUIT ADJUSTMENTS
5-1. Setting the Service Adjustment Mode.................................................................................................... 19
5-2. Memory Write Confirmation Method ..................................................................................................... 19
5-3. Adjust Buttons and Indicators............................................................................................................... 19
5-4. A Board Adjustments ............................................................................................................................. 21
6. DIAGRAMS
6-1. Block Diagram ....................................................................................................................................... 23
6-2. Circuit Board Location ........................................................................................................................... 26
6-3. Printed Wiring Boards and Schematic Diagrams................................................................................. 26
• A Board .............................................................................................................................................. 27
• P Board .............................................................................................................................................. 35
• K Board .............................................................................................................................................. 37
• HT Board............................................................................................................................................ 37
• C Board.............................................................................................................................................. 39
• CV Board............................................................................................................................................ 40
• E Board .............................................................................................................................................. 42
• HV Board............................................................................................................................................ 43
6-4. Semiconductors .................................................................................................................................... 45
7. EXPLODED VIEW
7-1. Chassis (KV-27S66).............................................................................................................................. 46
7-2. Chassis (KV-27S42/27S46/27SL42/42C/29SL46/29XL42M) .............................................................. 47
7-3. Chassis (KV-29AL42/29AL42C)............................................................................................................ 48
7-4. Chassis (KV-29AL66/66C) .................................................................................................................... 49
8. ELECTRICALPARTSLIST ...................................................................................................................................................50
TABLE OF CONTENTS

— 4 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
WARNINGS AND CAUTIONS
CAUTION
SHORTCIRCUIT THEANODE OF THE PICTURE TUBEAND THE
ANODECAPTOTHEMETALCHASSIS,CRTSHIELD,ORCARBON
PAINTED ONTHECRT,AFTERREMOVINGTHEANODE.
WARNING!!
ANISOLATIONTRANSFORMERSHOULDBE USED DURINGANY
SERVICETOAVOID POSSIBLE SHOCK HAZARD, BECAUSE OF
LIVECHASSIS. THECHASSIS OF THISRECEIVER IS DIRECTLY
CONNECTEDTOTHEACPOWERLINE.
SAFETY-RELATEDCOMPONENTWARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ON THE
SCHEMATICDIAGRAMS,EXPLODEDVIEWS,ANDIN THEPARTS
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
CRITICALFORSAFEOPERATIONAREIDENTIFIEDINTHISMANUAL.
FOLLOW THESE PROCEDURES WHENEVER CRITICAL
COMPONENTSARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.
ATTENTION
ATTENTION!!
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER
L'ANODEDUTUBECATHODIQUEETCELUIDEL'ANODEDUCAPAUCHASSIS
METALLIQUEDEL'APPAREIL,OUAUCOUCHEDECARBONEPEINTESURLE
TUBECATHODIQUEOUAUBLINDAGE DU TUBECATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSISSOUSTENSION,UNTRANSFORMATEURD'ISOLEMENTDOITETRE
UTILISÉLORSDETOUTDÉPANNAGE.LECHÁSSISDECERÉCEPTEUREST
DIRECTEMENTRACCORDÉÀL'ALIMENTATIONSECTEUR.
ATTENTIONAUXCOMPOSANTSRELATIFSALASECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES LISTES
DEPIECES SONT D'UNEIMPORTANCECRITIQUE POUR LA SECURITE DU
FONCTIONNEMENT.NELESREMPLACERQUEPARDESCOMPOSANTSSONY
DONTLENUMERODEPIECEEST INDIQUEDANSLEPRESENTMANUELOU
DANSDESSUPPLEMENTSPUBLIESPARSONY.LESREGLAGESDECIRCUIT
DONT L'IMPORTANCE EST CRITIQUE POUR LA SECURITE DU
FONCTIONNEMENTSONTIDENTIFIESDANSLEPRESENTMANUEL.SUIVRE
CESPROCEDURESLORSDECHAQUEREMPLACEMENTDECOMPOSANTS
CRITIQUES,OULORSQU'UNMAUVAISFONTIONNEMENTSUSPECTE.
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 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”.
Diagnostic Item No. of times Display/ Probable Cause Detected
Description STANDBY/TIMER Diagnostic result Location Symptoms
lamp flashes
* Power does not turn on Does not light * Power cord is not plugged in. * Power does not come on.
* Fuse is burned out (F5050) (E Board) * No power is suppled to the TV.
* AC power supply is faulty.
* +B overcurrent (OCP) 2 times 2:0 or 2:1 * H.OUT (Q502) is shorted. (A board) * Power does not come on.
* IC1751 is shorted. (C board) * Load on power line is shorted.
* IC1701 is shorted. (CV board)
* Vertical deflection 4 times 4:0 or 4:1 * +13V is not supplied. (A board) * Has entered standby state after
stopped* horizontal raster.
* IC 541 is faulty (A board) * Vertical deflection pulse is stopped.
* Power line is shorted or power supply
is stopped.
* White balance failure 5 times 5:0 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
* G2 is improperly adjusted**. reference pulse output is small.
*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.

— 5 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Display of Standby/Timer LED Flash Count
LED ON 0.3 sec.
LED OFF 0.3 sec. LED OFF
3 sec.
2 times
4 times
5 times
Diagnostic Item Flash Count*
+B overcurrent 2 times
Vertical deflection stopped 4 times
White balance failure 5 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:
Display Channel 5Sound volume
Note that this differs from entering the service mode (sound volume ).
Power ON
+
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:
ENTERChannel 8
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.
STANDBY/TIMER LED

— 6 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Self-diagnostic Circuit
IC301
Y/CHROMA JUNGLE IC541 V. OUT IC001 SYSTEM IC003 MEMORY
IK IN
FROM
CRT 21
HP/PROTECT
SDA
FROM
IC521
PIN 7 18
35 IO-SDATO-LED 37
REF 3I-PROTIO-BDAT
17 36 B-DAT
5
18 DISPLAY
+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.
Vertical deflection stopped Occurs 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 failure If 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.)

— 7 —
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.
SAFETY CHECK-OUT
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 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 guaranteed earth ground; the cover-
plate 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).
Figure B. Checking for earth ground.Figure A. Using an AC voltmeter to check AC leakage.

— 8 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Thefollowing are partial abstractsfrom the Operating Instruction
Manual. Thepage numbers shownreflect those of the Operating
Instruction Manual.
SECTION 1
GENERAL
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:
Cable and antenna
KV-27S66, 27V66 only
If your cable provider does not feature local channels, you may find this
set up convenient.
✍If you are connecting to an indoor or outdoor antenna, it will be necessary to
adjust the orientation of the antenna for best reception.
✍Select CABLE or ANT mode by pressing on the remote control.
CATV cable
(No connection “TO
CONVERTER” in this case)
Antenna cable VHF/UHF
TO CONVERTER
AUX
(Rear of TV)
User Guide
Connecting Additional Equipment
TV and VCR
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.
(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.
! VCR must be connected and turned on to operate PIP. (KV-27S46 only)
✍ To watch video programs from your VCR, tune your TV to channel 3 or 4 (as
set on the rear of your VCR).
✍ 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)
From
Cable/
VCR
TV
2
1
3
antenna
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 page 24.
User Guide
TV, Cable box and Cable
KV-27S66, 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)
5 6
3 4

— 9 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Connecting Your TV
7
TV, VCR, and Cable box
1Connect the coaxial cable from the wall to the IN jack on your cable
box.
2Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the IN jack on your VCR.
3Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF IN jack on the TV.
(Optional connection)
4If 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.
✍If you will be controlling all channel selection through your cable box, you
should consider using the CHANNEL FIX feature on page 24.
✍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.
3
TV
Cable
4(Optional connection)
Cable box
1
VCR
2
8
User Guide
TV and Digital Satellite Receiver
1Connect the cable from your satellite antenna to SATELLITE IN on
the satellite receiver.
2Attach the coaxial connector from your cable or antenna to
VHF/UHF IN on your TV.
3Using A/V connectors, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your TV. You can use
the button 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
Satellite receiver
Satellite
antenna
cable
1
2
3
From
cable/
antenna
Connecting Your TV
9
TV, Digital Satellite Receiver and VCR
1Connect the cable from your satellite antenna to SATELLITE IN on
the satellite receiver.
2Attach the coaxial connector from your cable or antenna to
VHF/UHF IN on your VCR.
3Using a coaxial cable, connect VHF/UHF OUT on your VCR to
VHF/UHF IN on your TV.
4Using A/V connectors, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your VCR.
5Using 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.
Satellite receiver
4
5
2
3
1Cable
TV
VCR
Satellite
antenna
10
User Guide
Connecting a Camcorder
Using A/V cables, connect AUDIO and VIDEO OUT on your camcorder
to AUDIO and VIDEO IN on your TV.
Connecting a DVD Player
Using A/V connectors, connect LINE OUT on your DVD to VIDEO IN
on your TV.
✍Connection can also be made to the rear A/V panel of your 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.
(Front A/V Panel KV-27V42, 27V66 only)
A/V output
A/V outputs
(Rear of TV)
(Rear of DVD player)

— 10 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Connecting Your TV
11
Connecting an audio system
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.
✍Set your stereo to the chosen line input. (See page 20 for additional audio
setup instructions.)
AUDIO-L
AUDIO-R
Line
input
1
2
12
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.
1Connect the VCR intended for playback using the setup instructions
on page 4 of this manual.
2Using A/V connectors, connect AUDIOand 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.
(Rear panel KV-27V66 only)
VCR (for playback) VCR (for recording)
2
1
34
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.
Cannotoperate
single tuner
PIP (KV-27S46)
❏Make sure the VCR is connected 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).
No picture, no
sound ❏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 settings: when watching TV, set
to TV; when watching video equipment, set to 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.
Poor or no
picture, good
sound
❏Adjust PICTURE in the VIDEO menu (page 19).
❏Adjust BRIGHTNESS in the VIDEO menu (page 19).
❏Check the antenna and/or cable connections (page 3).
Good picture,
no sound ❏Press so that MUTING disappears from the screen (page 13).
❏Check your AUDIO settings. Your TV may be set to
SAP (page 21).
No color ❏Adjust COLOR in the VIDEO menu (page 19).
Only snow
appears on the
screen
❏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.
35
Other Information
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).
Dotted lines or
stripes ❏Adjust the antenna.
❏Move the TV away from other electronic equipment.
Some electronic equipment can create electrical noise,
which can interfere with TV reception.
Double images
or ghosts ❏Check your outdoor antenna or call your cable service.
Cannot receive
higher number
channels(UHF)
when using an
antenna
❏Make sure CABLE is set to OFF in the CHANNEL SET
UP menu (page 24).
❏Use AUTO PROGRAM to add channels that are not
presently in the memory (page 24).
Cable stations
don’t seem to
work
❏Make sure CABLE is set to ON in the CHANNEL SET
UP menu (page 24).
❏Use AUTO PROGRAM to add channels that are not
presently in the memory (page 24).
Remote
Control 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.

— 11 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/29AL66C/
29SL42/29SL42C/29SL46/29XL42M
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL
(KV-27S46/27S66)
Rear Cover
Seven screws
(BVTP 4X16)
Two screws
(BVTP 3X10)
Nine Screws
(BVTP 3x12)
Rear Cover
Two Screws
(BVTP 3x10)
Control Switch
Four Claws
2-2. REAR COVER REMOVAL
(KV-29SL42/29SL42C/29SL46/29XL42M)
2-3. REAR COVER REMOVAL
(KV-29AL42/29AL42C/29AL66/29AL66C) 2-4.CONTROL SWITCH REMOVAL (KV-29AL42/29AL42C/29AL66/29AL66C)

— 12 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
2-5. CHASSIS ASSEMBLY REMOVAL
(KV-27S46/27S66/29SL42/29SL42C/29SL46/29XL42M)
2-7. SERVICE POSITION
A Board E Board
Board claw
2 clips
(KV-27S42/27S46/27S66 only)
2 clips
A Board
E Board
P Board
C Board
A Board
E Board
K Board
HV Board
Board Claw
2-6. CHASSIS ASSEMBLY REMOVAL
(KV-29AL42/29AL42C/29AL66/29AL66C)
(KV-27S42/27S46/27S66 only)

— 13 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/29AL66C/
29SL42/29SL42C/29SL46/29XL42M
2-8. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
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.
a
REMOVAL PROCEDURES
HOW TO HANDLE AN ANODE CAP
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
NOTE: After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield,
or carbon painted on the CRT.
1
Do not use sharp objects which may cause damage to the
surface of the anode cap.
3
Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
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.
2
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 .
1
Turn up one side of the rubber cap in
the direction indicated by arrow
a .
b
Anode Button
c
ANODE CAP REMOVAL
Tension Spring
Two DGC holders (M)
Four Screws
(Tapping screw 7)
Anode Cap
A board
Cushion
E board
Picture tube
C / CV
board HV board
K board
Degaussing Coil
DeflectionYoke
(KV-29AL66/29AL66C/
27S66/29AL42/
29AL42C)
(KV-29AL66/29AL66C/
29AL42/29AL42C)
(KV-29AL66/29AL66C/
29AL42/29AL42C)
Coated Earth
Ground Strap

— 14 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M SECTION 3
SET-UP ADJUSTMENTS
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.
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.
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.
ba
cd
d
b
c
Purity control
corrects this area
Disk magnets
or rotatable disk
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas
a
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: STANDARD
PICTURE control:................ Normal
BRIGHTNESS control......... Normal
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
Purity Control
Blue Red
Green

— 15 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
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
b
a
BMC magnet
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:
RGB BGR
RGB
R
R
R
G
B
G
B
G
B
RGB
BGR
R
G
BR
G
B
BGR RGB
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
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)
B
G
R
Center dot
R G B
V.STAT magnet
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:
a
bbB
G
R
ab
B
G
R
aBGR
RGB
b
R
G
B
b
b
a
R
G
B
(1)
(3)
(2)

— 16 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the
misconverged areas.
ba
cd
a
b
d
a-d: screen-corner
misconvergence c
3-3. FOCUS
1. Adjust FOCUS control for best picture.
FOCUS
SCREEN
(FV)
(G2)
3-4. SCREEN (G2)
1. Input a dots pattern.
2. Set the PICTURE and BRIGHTNESS controls at minimum
and COLOR control at normal.
3. Adjust SBRT, GCUT, BCUT in service mode with an
oscilloscope as shown below so that voltages on the red,
green, and blue cathodes are 170 VDC.
Pedestal
170 VDC
Ground
4. Observe the screen and adjust SCREEN (G2) VR in FBT
to obtain the faintly visible background of dot signal.
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
2.
Display Channel 5Sound volume Power
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode In
1. The CRT displays the item being adjusted.
SERVICE HSIZ 0
Disp.
(Item) Item Data
2. Press or on the Remote Commander to select the
item.
3. Press or on the Remote Commander to change the
data.
4. Press then to save into the memory.
Service Adjustment Mode Memory
Turn set off then on to exit service adjustment mode.
SERVICE WRITE Green
Red
MUTING
ENTER
3-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
2. Set to Service Adjustment Mode.
3. Set DCOL to “0”.
4. Set the PICTURE and BRIGHTNESS to minimum.
5. Adjust with SBRT if necessary.
6. Select GCUT and BCUT with and .
7. Adjust with and for the best white balance.
8. Set PICTURE and BRIGHTNESS to maximum.
9. Select GDRV and BDRV with and .
10.Adjust with and for the best white balance.
11. Reset DCOL to “1”.
12.To write into memory, press then .

— 17 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
SECTION 4
SAFETY RELATED ADJUSTMENTS
4-1. R584 CONFIRMATION METHOD
(HV HOLD-DOWN CONFIRMATION)
AND READJUSTMENTS
The following adjustments should always be performed when
replacing the following components which are marked with
on the schematic diagram:
DY, C508, C505, C507, C509, C511, C515, C520, C573,
C574, C575, D572, D573, D574, IC301, IC521, IC602, L591,
L501, R582, R583, R585, R578, R586, R625, R626, T504
Preparation Before Confirmation
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 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.
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 .
+
IABL
ABL
T504
FBT
range
-
ammeter
3.0 mA DC
A
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.
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 and .
6. Adjust with to the 0 level.
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.
9. Adjust with and for: 135+ 3 VDC
10.Write into the memory by pressing then
.

— 18 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
TP600
Ammeter
3mA DC Range
T505
FBT
ABL11
C574
+
–
A
Figure 1
Digltal
Multimeter
+
–
R584
+
–
Power
Supply
1SS119
Digital
Multimeter
+
–

— 19 —
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
5-1. Setting the Service Adjustment Mode
1. Standby mode (power off).
2.
Display Channel 5Sound volume Power ON
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode On
1. The CRT displays the item being adjusted.
SERVICE HSIZ 0
Disp.
(Item) Item Data
2. Press or on the Remote Commander to select an
item.
3. Press or on the Remote Commander to change the data.
4. Press then to save into the memory.
Service Adjustment Mode Memory
SERVICE WRITE Green
Red
MUTING
ENTER
1. Press then on the Remote Commander to
initialize.
SERVICE RESET
2. Turn set off then on to exit service adjustment mode.
SECTION 5
CIRCUIT ADJUSTMENTS
Carry out step 1 when adjusting
IDs 0–4 and when replacing
and adjusting IC003.
5-2. Memory Write Confirmation Method
1. After adjustment, remove the power plug from the AC
outlet, then plug it in again.
2. Turn the power switch ON and set to service mode.
3. Call the adjusted items again to confirm they were adjusted.
5-3. Adjust Buttons and Indicators
Use the Remote Commander (RM-Y168) to perform the circuit adjustments in this section.
NOTE: Test Equipment Required:
• Pattern generator
• Frequency counter
• Digital multimeter
• Audio oscillator