Sony kv27fs12 schematic

SERVICE MANUAL

MODEL COMMANDER DEST CHASSIS NO.

BA-5 CHASSIS

KV -27FS12
KV -27FS12
KV -27FS16
KV -29FS12
KV -29FS12C

RM-Y168 US SCC-S40D-A
RM-Y168 CND SCC-S41D-A
RM-Y169 US SCC-S40E-A
RM-Y168 E SCC-S38K-A
RM-Y168 E SCC-S38L-A

KV-27FS16

RM-Y168

TRINITRON® COLOR TV

KV-27FS12/27FS16/29FS12/29FS12C

KV-27FS12 KV-27FS16 KV-29FS12 KV-29FS12C

Power requirements 120V, 60Hz 120V, 60Hz 120V/220V, 60Hz/50Hz 120V/220V, 60Hz/50Hz
Number of inputs/outputs

Video

1)

3333

S Video

2)

1111

Audio

3)

3333

Audio Out

4)

1111

Y, P

B

, P

R

5)

1111

Speaker output(W) 5Wx2 5Wx2 10Wx2 10Wx2

Power Consumption(W)

In use(Max) 160W 170W 185W 185W
In standby 1W 1W 1W 1W

Dimensions(W/H/D)

(mm)

700 x 632 x 512 mm. 700 x 632 x 512 mm. 700 x 632 x 512 mm. 700 x 632 x 512 mm.

(in)

27

1/2

x 24

7/8

x 20

1/6

in. 27

1/2

x 24

7/8

x 20

1/6

in. 27

1/2

x 24

7/8

x 20

1/6

in. 27

1/2

x 24

7/8

x 20

1/6

in.

Mass

(kg) 47kg 47kg 47kg 47kg
(lbs) 103 lbs. 10 oz. 103 lbs. 10 oz. 103 lbs. 10 oz. 103 lbs. 10 oz.

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) 500mVrms (100% modulation), impedance: 47kilohms

4) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fix)

5) Y: 1.0 Vp-p, 75 ohms, sync negative; P

R: Vp-p, 75 ohms

P

SPECIFICATIONS

B: 0.7 Vp-p, 75 ohms;

Television system

American TV standard/NTSC

Channel coverage

VHF:2-13/UHF:14-69/CATV:1-125

Visible screen size

27” picture measured diagonally

Actual screen size

29” picture measured diagonally

Antenna

75 ohm external antenna terminal for VHF/UHF

Supplied accessories

Remote Commander RM-Y168 (ALL EXCEPT KV-27FS16)
Remote Commander RM-Y169 (KV -27FS16 ONLY)
Size AA (R6) batteries (2)

Optional accessories

Connecting cables: VMC-810S/820S, VMC-720M,
YC-15V/30V , RK74A
U/V mixer EAC-66
TV Stand: SU27FD3

Design and specifications are subject to change without notice.

— 2 —

KV-27FS12/27FS16/29FS12/29FS12C

TABLE OF CONTENTS

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............................................................................................................................... 14

2-2. Chassis Assembly Removal..................................................................................................................... 14

2-3. Service Position ...................................................................................................................................... 14

2-4. Picture Tube Removal............................................................................................................................. 15

3. SET-UP ADJUSTMENTS

3-1. Beam Landing......................................................................................................................................... 16

3-2. Convergence .......................................................................................................................................... 17

3-3. Focus...................................................................................................................................................... 18

3-4. Screen (G2) ............................................................................................................................................ 19

3-5. Method of Setting the Service Adjustment Mode..................................................................................... 19

3-6. White Balance Adjustment s .................................................................................................................... 19

4. SAFETY RELATED ADJUSTMENTS

4-1.

4-2. B+ V oltage Confirmation and Adjustment................................................................................................ 20

5. CIRCUIT ADJUSTMENTS

5-1. Setting the Service Adjustment Mode...................................................................................................... 22

5-2. Memory Write Confirmation Method........................................................................................................ 22

5-3. Adjustment Buttons and Indicators.......................................................................................................... 22

5-4. MA Board Adjustment s............................................................................................................................ 25

6. DIAGRAMS

6-1. Block Diagram......................................................................................................................................... 31

6-2. Circuit Board Location............................................................................................................................. 35

6-3. Printed Wiring Boards and Schematic Diagrams..................................................................................... 35

6-4. Semiconductors ...................................................................................................................................... 57

7. EXPLODED VIEW

7-1. Chassis (KV-27FS16/27FS12 ONL Y) .................................................................................................... 58

7-2. Chassis (KV -29FS12/29FS12C ONL Y)................................................................................................... 59

R564 Confirmation Method (HV Hold-Down Confirmation and Readjustments) ................................. 20

• A Board .............................................................................................................................................. 36

• MA Board............................................................................................................................................ 43

• CA Board............................................................................................................................................ 49

• HX Board............................................................................................................................................ 50

• D Board .............................................................................................................................................. 51

• K Board .............................................................................................................................................. 53

• V A Board ............................................................................................................................................ 54

• P Board .............................................................................................................................................. 55

8. ELECTRICAL PARTS LIST

................................................................................................................................................ 60

— 3 —

KV-27FS12/27FS16/29FS12/29FS12C

WARNINGS AND CAUTIONS

CAUTION

SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE
AND THE ANODE CAP TO THE METAL CHASSIS, CRT
SHIELD, OR CARBON PAINTED ON THE CRT, AFTER
REMOVING THE ANODE.

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-27FS12/27FS16/29FS12/29FS12C

LED ON 0.3 sec.
LED OFF 0.3 sec.

LED OFF

3 sec.

STANDBY/TIMER LED

Diagnostic Item Flash Count*

+B overcurrent 2 times
I-Prot 4 times
IK 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

5

Sound volume

Power ON

Self-Diagnostic Screen Display

SELF DIAGNOSTIC

2: 0
3: N/A 0
4: 0
5: 1
101: N/A 0

Note that this differs from entering the service mode (sound volume

Numeral “0” means that no fault was detected.

Numeral “1” means a fault was detected one time only.

— 5 —

+

).

KV-27FS12/27FS16/29FS12/29FS12C

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

CN 705 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-Prot Occurs 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.

IK If 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-27FS12/27FS16/29FS12/29FS12C

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 the button.



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 setting up your TV for the first time. This section
covers basic connections in addition to any optional equipment you may
be connecting.

KV-27FS12/27FS16/29FS12/29FS12C

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 f rom 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 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

KV-27FS12/27FS16/29FS12/29FS12C



You can use the button to switch between the VHF/UHF and VIDEO
inputs.

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 VH F/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-27FS12/27FS16/29FS12/29FS12C

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 co axi al 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

antenna

1

Satellite

cable

2

From
cable/
antenna

VHF/UHF

IN

OUT

— 11 —

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
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-27FS12/27FS16/29FS12/29FS12C

9

Using the Remote Control and

Using the Remote Control and Basic Functions

15

SLEEP Turns the TV off automatically in

approximately 15, 30, 45, 60, 90,
or 120 minutes. Cancel by
pressing until SLEEP OFF
appears.

MTS/SAP Cycles through the

Multi-channel TV Sound (MTS)
options: Stereo, Mono, and
Auto-SAP (Second Audio
Programming).

DISPLAY Press once to show current time,

(if set) and channel number.

Cycles through available Steady
Sound settings, (see page 23).

JUMP Alternates between the last two

channels selected with the

buttons.

GUIDE Brings up the custom guide of

your satellite receiver.

MENU Displays the on-screen menu.

Press again to exit the menu at
any time.

RESET Press to return to factory settings

while in an on-screen menu.

CODE SET Use 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-27FS12/27FS16/29FS12/29FS12C

— 12 —

/



The remote control shown (RM-Y171) is for KV-27FV16. Your remote control
may not look like the one illustrated.

Button Description
POWER Press when you want to turn

FUNCTION Press when you want to control

MUTING Instantly turns off the sound.

SYSTEM
OFF

TV/VIDEO Cycles through available video

ANT Press to change the VHF/UHF

TV/VTR Press when you are finished

PICTURE
MODE

14

connectedequipmentonandoff.

connected equipment with your
remote control.

Press again or press to 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. Press to open the menu. Use the or
buttons on the front A/V panel instead of the

F or

buttons on the remote control. Use the button on
the front A/V panel instead of the

G, g

,and
buttons on the remote control. Press again when
the setting or adjustment is complete. Contact your
nearest Sony dealer to order a replacement.

Cannot access
other menus
whenusing the
Basic Menu



If you use the button to close the Basic menu, only
the Basic menu appears when you press again. 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).



Press sothatMUTINGdisappearsfromthe
screen (page 14).



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-27FS12/27FS16/29FS12/29FS12C

39

KV-27FS12/27FS16/29FS12/29FS12C

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 REMOVAL 2-3. SERVICE POSITION

HX Board

CA Board

CA Board

VA Board

VA Board

Claw

D Board

A Board

MA Board

P Board

K Board

MA Board

D Board

A Board

— 14 —

2-4. PICTURE TUBE REMOVAL

WARNING:

BEFORE REMOVING

THE ANODE CAP

KV-27FS12/27FS16/29FS12/29FS12C

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 tension devices.

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-27FS12/27FS16/29FS12/29FS12C

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

Disk magnets
or rotatable disk
magnets correct

these areas (a-d)

b

d

Purity control

corrects this area

ba

cd

Deflection yoke positioning

corrects these areas

a

— 16 —

c

KV-27FS12/27FS16/29FS12/29FS12C

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 RV 701 to converge).

RGB

Center dot

RV701

V.STAT

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. 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-STAT

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

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 on the following page.

— 17 —

KV-27FS12/27FS16/29FS12/29FS12C

BGR

RGB

BGR

R
G
B

B
G

R

RGB

RGB

G

B

B

G

R

R
G
B

R

BGR RGB

4. Adjust XCV core to balance X axis.

5. Adjust YCH VR to balance Y axis.

6. Adjust vertical red and blue convergence with V.TIL T
(TLV VR).

Note: Perform adjustments while tracking items 1 and 2.

Screen-Corner Convergence

1. Affix a permalloy assembly corresponding to the
misconverged areas.

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

misconvergence
cd

B R R B
(R)(B) (B)(R)

TLH+
TLH-

(TLV)

Focus (FV)

Screen (G2)

— 18 —

KV-27FS12/27FS16/29FS12/29FS12C

r

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 SBR T , 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

Ground

170 VDC

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).

3-6. WHITE BALANCE ADJUSTMENTS

1. Input an entire white signal with burst.

2. Set to Service Adjustment Mode.

3. Set the PICTURE and BRIGHTNESS to minimum.

4. Adjust with SBR T if necessary .

5. Select GCUT and BCUT with

6. Adjust with

and for the best white balance.

7. Set PICTURE and BRIGHTNESS to maximum.

8. Select GDRV and BDRV with

9. Adjust with

and for the best white balance.

10. To write into memory, press

and .

and .

then .

2.

Display Channel

5

Sound volume Powe

+

on the Remote Commander (press each button within a
second).

Service Adjustment Mode In

1. The CR T displays the item being adjusted.

Disp.

Item

(Item)

Data

SERVICE HSIZ 0

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

MUTING

ENTER

Green

Red

— 19 —

KV-27FS12/27FS16/29FS12/29FS12C

SECTION 4

SAFETY RELATED ADJUSTMENTS

4-1.

R564 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:

Part Replaced ( )

DY , T505, CRT , IC501, C507,
C520, C505, C509, C515, T504,
T503, C551, L510, C546, C537,
C547, D517, D518, D519, R560,
R561, R562, R563, R565, R566,

R567, R525 ...................... .A Board

IC301.............................. MA Board

Adjustment (

HV HOLD-DOWN
R564

)

Preparation Before Confirmation

1. Using a Variac, apply AC input voltage: 120-220 ± 2 VAC.

2. T urn the POWER switch ON.

3. Input a white signal and set the PICTURE and
BRIGHTNESS controls to maximum.

4. Confirm that the voltage between C546 (+) or TP503
and ground is more than 21.0 VDC.

Hold-Down Operation Confirmation

1. Connect the current meter between Pin 1 1 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 = 1730 ± 100 µA.

3. Confirm the voltage of A Board TP-600 is 135 ± 1.5 VDC.

4. Connect the digital voltmeter and the DC power supply
via diode 1SS119 to C546 (+) and ground. (See Figure 1
on the next page.)

5. Increase the DC power voltage gradually until the picture
blanks out.

6. T urn DC power source off immediately .

7. Read the digital voltmeter indication
(standard < 24.78+0,-0.1 VDC).

8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 1730 ± 100 µA.

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 R564 component marked with

T505

FBT

ammeter

3.0 mA DC
range

ABL

+

IABL

-

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 the A Board.

A BOARD: IC601, PH601

1. Using a Variac, apply AC input voltage: 130 ± 2 V AC.

2. Input a dot signal.

3. Set the PICTURE and BRIGHTNESS controls to minimum.

4. Confirm that the voltage of A Board TP-600 is <136.5 VDC.

5. If step 3 is not satisfied, replace the components listed above,
then repeat steps 1–3.

— 20 —

11119

+

+
+

+

18
1818

9

5

6

C

9

5

6

C

9

5

6

9

5

C

6

C

R601

R601
R601R601

R615

R615
R615R615

D616

D616
D616D616

1

6

0

B

1

F

0

6

B

F

1

6

0

B

1

F

0

6

B

F

C624

C624
C624C624

H.DRIVE

H.DRIVE
H.DRIVEH.DRIVE

CN511

CN511

C611

C611

CN511CN511

C611C611

C654

C654
C654C654

CN506

CN506
CN506CN506

1111

1111

CN515

CN515
CN515CN515

+B

+B
+B+B

R515

R515
R515R515

C536

C536
C536C536

D521

D521
D521D521

4444

1111

5555

7777

R503

R503
R503R503

R516

R516
R516R516

C503

C503
C503C503

C554

C554
C554C554

R502

R502
R502R502

9
99

10

1018
1010

5

6

R

5

6

R
9

9

5

6

R

5

6

R
9

9

L602

L602
L602L602

C629

C629
C629C629

H.PULSE

H.PULSE
H.PULSEH.PULSE

FB503

FB503
FB503FB503

R507

R507
R507R507

T503

T503
T503T503

T502

T502
T502T502

Q501

Q501
Q501Q501

C504

C504
C504C504

R547

R547
R547R547

KV-27FS12/27FS16/29FS12/29FS12C

POWER
SUPPLY

DIGITAL

MULTIMETER

+

–

1SS119

+

–

R564

C546

R438

R438
R449

R449

R454

R454
R454R454

JR503

JR503
JR503JR503

R445

R445
R445R445

Q411

Q411
Q411Q411

D620

D620
D620D620

C524

C524
C524C524

R506

R506
R506R506

D506

D506

C510

C510
C510C510

L502

L502

T504

T504
T504T504

L509

L509
L509L509

C513

C513
C513C513

R504

R504
R504R504

L502L502

L505

L505
L505L505

C517

C517
C517C517

E

E
E

E

R505

R505
R505R505

C555

C555
C555C555

2

0

5

Q

2

0

5

Q

2

0

2

5

0

Q

5

Q

O

-

H

O

-

H

T

U

T

U

O

-

O

H

-

H

T

U

T

U

C505

C505
C505C505

C515

C515
C515C515

R553

R553
R553R553

D506D506

C550

C550
C550C550

C511

C511
C511C511

L501

L501
L501L501

B

B
B

B

B

B
B

B

C

C
C

C

C509

C509
C509C509

L510

L510
L510L510

R568

R568
R568R568

R449R449

C448

C448
C448C448

R450

R450
R450R450

R567

R567
R567R567

R565

R565
R565R565

IC501

IC501
IC501IC501

R522

R522
R522R522

R525

R525
R525R525

Q503

Q503
Q503Q503

R447

R447
R447R447

D507

D507
D507D507

8888

1111

R527

R527

R541

R541
R541R541

R514

R514
R514R514

FB502

FB502
FB502FB502

R527R527

B

B
E

E

BB
E

E

E

E
E

E

C525

C525
C525C525

5555

4444

3333

2222

1111

5

1

N

0

C

1

5

0

N

C

5

1

N

0

C

1

5

0

N

C

R546

R546

R546R546

R533

R533
R533R533

R534

R534

C551

C551

R534R534

C551C551

R438R438

C530

C530
C530C530

R529

R529
R529R529

5555

R573

R573

R573R573
R531

R531
R531R531

4444

C541

C541
C541C541

D510

D510
D510D510

6

6
66

R539

R539
R539R539

R518

R518
R518R518

7

7
77

R540

R540
R540R540

C543

C543
C543C543

C519

C519
C519C519

R537

R537
R537R537

D511

D511
D511D511

C552

C552
C552C552

R403

R403
R403R403

R563

R563
R563R563

C546

C546
C546C546

H.PROT

H.PROT
H.PROTH.PROT

C542

C542
C542C542

6

6

2

2
6

6

22

4

4
44

2

2
22

C518

C518
C518C518

IC502

IC502
IC502IC502

1

1
11

TH501

TH501
TH501TH501

R543

R543
R543R543

6

6
6

6

200V

200V
200V200V

6666

V DY -

V DY ­V DY -V DY -

V DY +

V DY +
V DY +V DY +

H DY -

H DY ­H DY -H DY -

H DY -

H DY ­H DY -H DY -

H DY +

H DY +
H DY +H DY +

H DY +

H DY +
H DY +H DY +

R545

R545
R545R545

L507

L507
L507L507

R225

R225
R225R225

D235

D235
D235D235

D234

D234
D234D234

C213

C213
C213C213

R218

R218

R218R218
R407

R407
R407R407

-13V

-13V

-13V-13V

HEATER

HEATER
HEATERHEATER

1

1
1

1

C211

C211
C211C211

Q205

Q205
Q205Q205

Q206

Q206
Q206Q206

C523

C523
C523C523

CN502

CN502
CN502CN502

D232

D232
D232D232

R232
R232R232

R511

R511

R511R511

R532

R532
R532R532

R561

R561

R561R561

T505

FBT

Q201

Q201
Q201Q201

D236

D236
D236D236

R231

R231R232
R231R231

D233

D233
D233D233

D518

D518
D518D518

D517

D517
D517D517

D514

D514
D514D514

C532

C532
C532C532

JR502

JR502
JR502JR502

D516

D516
D516D516

135V

135V
135V135V

T505

T505
T505T505

R804

R804
R804R804

ABL11

R226

R226
R226R226

R227

R227
R227R227

D520

D520
D520D520

R558

R558
R558R558

R559

R559
R559R559

R557

R557
R557R557

Q505

Q505
Q505Q505

R554

R554
R554R554

R555

R555
R555R555

R535

R535
R535R535

JUMPER-ID

JUMPER-ID
JUMPER-IDJUMPER-ID

R801

R801
R801R801

R803

R803
R803R803

CN504

CN504
CN504CN504

TP600

AMMETER

3mA dc range

A

+

–

Figure 1

— 21 —