Sony FD Trinitron WEGA KV-27FV16 Manual de usuario

SERVICE MANUAL

BA-5 CHASSIS

MODEL COMMANDER DEST CHASSIS NO.

KV-27FV16 RM-Y171 US SCC-S40K-A

KV-27FV16 RM-Y171 CND SCC-S41J-A

KV-29FV16 RM-Y171 E SCC-S38Q-A

KV-29FV16C RM-Y171 E SCC-S38R-A

KV-32FS12 RM-Y168 US SCC-S40F-A

KV-32FS12 RM-Y168 CND SCC-S41F-A

KV-32FS16 RM-Y169 US SCC-S40G-A

KV-32FS16 RM-Y169 CND SCC-S41G-A

TRINITRON®COLOR TV

RM-Y171KV-27FV16

885 Front.p65 4/17/00, 8:51 AM1

— 2 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

SPECIFICATIONS

Design and specifications are subject to change without notice.

Television system

AmericanTVstandard/NTSC

Channel coverage

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

Visible screen size

27” picture measured diagonally (KV-27FV16/29FV16/29FV16C ONLY)

32” picture measured diagonally (KV-32FS12/32FS16 ONLY)

Actual screen size

29” picture measured diagonally (KV-27FV16/29FV16/29FV16C ONLY)

34” picture measured diagonally (KV-32FS12/32FS16 ONLY)

Antenna

75 ohm external antenna terminal for VHF/UHF

Supplied accessories

Remote Commander RM-Y168 (KV-32FS12 ONLY )

Remote Commander RM-Y169 (KV-32FS16 ONLY )

Remote Commander RM-Y171 (KV-27FV16/29FV16/29FV16C ONLY)

SizeAA(R6) batteries (2)

Optional accessories

Connecting cables: VMC-810S/820S,VMC-720M,

YC-15V/30V, RK74A

U/V mixer EAC-66

TV Stand: SU27FD3 (KV-27FV16/32FS12/32FS16 ONLY)

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; PB: 0.7 Vp-p, 75 ohms;

PR: Vp-p, 75 ohms

KV-27FV16 KV-29FV16

KV-29FV16C KV-32FS12 KV-32FS16

Power requirements 120V, 60 Hz 120-220V, 50/60Hz 120V, 60 Hz 120V, 60 Hz

Number of inputs/outputs Video

3333

S Video

2211

Audio

3333

Audio Out

1111

Y,P

, P

1111

Monitor Out 1 1 -- --

Speaker output(W) 15Wx2 15Wx2 5Wx2 5Wx2

Power Consumption(W)

In use(Max) 220W 220W 165W 170W

In standby 1W 1W 1W 1W

Dimensions(W/H/D)

(mm) 762 x 604 x 519 mm 762 x 604 x 519 mm 800 x 704 x 582 mm 800 x 704 x 582 mm

(in) 30 x 23

7/8

x 20

1/2

in. 30 x 23

7/8

x 20

1/2

in. 31

1/2

x 27

3/4

x 23 in. 31

1/2

x 27

3/4

x 23 in.

Mass (kg) 49 kg. 49 kg. 74 kg. 74 kg.

(lbs) 107 lbs. 13 oz. 107 lbs. 13 oz. 162 lbs. 13 oz. 162 lbs. 13 oz.

The (=) SRS (SOUND RETREIVAL SYSTEM)

ismanufactured bySony Corporationunder

license from SRS Labs, Inc. It is covered by

U.S. Patent No. 4,748,669. Other U.S. and

foreignpatentspending.

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.

(=) SRS (SOUND RETREIVAL SYSTEM)

—3 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Section Title Page

Warnings and Cautions ....................................................................................................................................... 4

Self-DiagnosticFunction ...................................................................................................................................... 4

SafetyCheck-OutInstructions.............................................................................................................................. 7

1. GENERAL ........................................................................................................................................................... 8

2. DISASSEMBLY

2-1. Rear Cover Removal ............................................................................................................................... 14

2-2. ChassisAssemblyRemoval..................................................................................................................... 14

2-3. ServicePosition ...................................................................................................................................... 14

2-4. PictureTube Removal ............................................................................................................................. 15

3. SET-UP ADJUSTMENTS

3-1. BeamLanding......................................................................................................................................... 16

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

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

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

3-5. Method of Setting the ServiceAdjustment Mode ..................................................................................... 19

3-6. WhiteBalanceAdjustments .................................................................................................................... 19

4. SAFETY RELATED ADJUSTMENTS

4-1. R564 Confirmation Method (HV Hold-Down Confirmation and Readjustments) ................................. 20

4-2. B+ Voltage Confirmation andAdjustment ................................................................................................ 20

5. CIRCUITADJUSTMENTS

5-1. SettingtheServiceAdjustment Mode...................................................................................................... 22

5-2. MemoryWriteConfirmation Method........................................................................................................ 22

5-3. AdjustmentButtonsandIndicators.......................................................................................................... 22

5-4. MABoardAdjustments............................................................................................................................ 26

6. DIAGRAMS

6-1. BlockDiagram......................................................................................................................................... 31

6-2. CircuitBoardLocation............................................................................................................................. 35

6-3. PrintedWiringBoardsandSchematicDiagrams..................................................................................... 35

•ABoard .............................................................................................................................................. 36

•MABoard............................................................................................................................................ 43

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

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

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

•BC Board............................................................................................................................................ 53

•HA Board ............................................................................................................................................ 55

•HB Board............................................................................................................................................ 56

•K Board .............................................................................................................................................. 57

•VABoard ............................................................................................................................................ 58

•P Board .............................................................................................................................................. 59

6-4. Semiconductors ...................................................................................................................................... 61

7. EXPLODED VIEW

7-1. Chassis (KV-27V16/29FV16/29FV16C ONLY) ...................................................................................... 62

7-2. Picture Tube (KV-27V16/29FV16/29FV16C ONLY) ............................................................................... 63

7-3. Chassis(KV-32FS12/32FS16ONLY) ..................................................................................................... 64

7-4. Picture Tube (KV-32FS12/32FS16 ONLY) .............................................................................................. 65

8. ELECTRICAL PARTS LIST................................................................................................................................................ 66

TABLE OF CONTENTS

—4 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

WARNINGSAND 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

OFTHIS RECEIVERIS DIRECTLYCONNECTED TOTHE

AC POWER LINE.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK

ONTHE SCHEMATICDIAGRAMS,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

ARECRITICALFORSAFE OPERATIONAREIDENTIFIED

IN THIS MANUAL. FOLLOW THESE PROCEDURES

WHENEVERCRITICALCOMPONENTSARE 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

CHÁSSISSOUSTENSION,UNTRANSFORMATEURD'ISOLEMENTDOITETRE

UTILISÉLORSDETOUTDÉPANNAGE.LECHÁSSISDECERÉCEPTEUREST

DIRECTEMENTRACCORDÉÀL'ALIMENTATIONSECTEUR.

ATTENTIONAUX COMPOSANTS RELATIFS ALASECURITE!!

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

LEPRESENTMANUELOUDANS DESSUPPLEMENTSPUBLIESPAR SONY.

LESREGLAGES DECIRCUITDONT L'IMPORTANCE ESTCRITIQUE 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 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”.

—5 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Display of Standby/Timer LED Flash Count

2 times

4 times

5 times

LED ON 0.3 sec.

LED OFF 0.3 sec. LED OFF

3 sec.

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

Turnoffthepower switchon theTVmain unitor unplugthepower cord fromtheoutlet tostop theSTANDBY/TIMER LAMPfrom 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: 0

3: N/A 0

4: 0

5: 1

101: N/A 0

Numeral “0” means that no fault was detected.

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

STANDBY/TIMER LED

—6 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

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.

Self-Diagnostic Circuit

+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 (MABoard) is less than 1V whenV.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 (MABoard). TV will stay on, but there will be no picture.

*(Refers to the RGB levels of theAKB detection Ref pulse that detects 1K).

—7 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

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 absolutelycertainthatyouhavereplacedall the

insulators.

4. Look for unauthorized replacement parts, particularly

transistors,that were installedduringaprevious 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. Makesure your instrumentsare accurate;

be suspicious of your HV meter if sets always have

low HV.

8. Checktheantennaterminals,metaltrim,“metallized”

knobs, screws, and all other exposed metal parts forAC

leakage. Check leakage as described below.

SAFETY CHECK-OUT

Leakage Test

TheAC 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 microamperes). Leakage current can be

measured by any one of three methods.

1. Acommercial leakage tester, such as the Simpson 229

or RCAWT-540A. Follow the manufacturers'

instructions to use these instructions.

2. Abattery-operatedAC milliammeter.The DataPrecision

245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means

of a VOMor battery-operatedAC 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

aresuitable.Nearlyallbattery-operateddigital

multimeters that have a 2 VAC range are suitable

(see FigureA).

How to Find a Good Earth Ground

Acold-waterpipe isa guaranteed earthground; thecover-

plateretainingscrewonmostAC outletboxesisalso atearth

ground.If theretainingscrewis to be used asyourearth

ground,verifythat itisat groundbymeasuringthe resistance

betweenitand a cold-water pipewithanohmmeter.The

readingshouldbezero ohms. If acold-waterpipeisnot

accessible, connecta 60-to100-watttrouble- light(nota

neonlamp) between the hot side of the receptacleand the

retainingscrew.Trybothslots,ifnecessary,to locatethehot

sideonthe line;thelampshould lightatnormal brillianceifthe

screwisat ground potential(seeFigureB).

Figure B. Checking for earth ground.FigureA. Using an AC voltmeter to checkAC leakage.

Trouble Light

AC Outlet Box Ohmmeter

Cold-water Pipe

—8 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Theinstructions mentioned here are partialabstractsfromthe Operating Instruction Manual.

The page numbers shown reflect those of the Operating Instruction Manual.

SECTION 1 GENERAL

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.

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.

Operating Instructions

Cable Box Connections

Some pay cable TV systems to use scrambled or encoded signals that

requireacableboxtoviewallchannels.

Cable Box

Connect the coaxial cable from your cable service to the IN jack on

your cable box.

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

TO CONVERTER

(Signal)

VHF/UHF

75-ohm coaxial cable (not supplied)

CATV cable (unscrambled channels)

—9 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Connecting Your TV

Connecting Additional Equipment

TV and VCR

Connect the coaxial cable from your TV antenna or cable service to

the IN jack on your VCR.

2Connect a coaxial cable (not supplied) from the OUT jack on your

VCR to the VHF/UHF jack on the TV.

(Optional connection)

3If 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.



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.



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

inputs.

(Optional connection)

From

cable/

VCR

antenna

Rear of TV

Operating Instructions

TV and Cable Box

Connect the coaxial cable from your cable service to the IN jack on

your cable box.

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).

cable

Cable Box

Rear of TV

From

—10 —

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Connecting Your TV

TV, Cable box, and Cable

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 .



When using PIP, the AUX input cannot be viewed in the window picture.

Cable Box

From

Cable

Rear of TV (KV-27FV16 only)

Operating Instructions

TV, VCR, and Cable box

1Connect the coaxial cable from your cable service 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 jack on the TV.

(Optional connection)

4If 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.

Cable

4(Optional connection)

Cable box

VCR

Rear of TV

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