Sony KV-13TR27 Schematic

KV43TR27

RM-781

SERVICE MANUAL

SPECIFICATIONS

Television system

Channel coverage

Picture tube

Power requirements Power consumption

Accessories supplied

Optional accessories

Speaker size :

American TV standards VHF : 2-13 UHF : 14-69 Cable TV : 1-125 Mirror black Trinitron tube 13-inch picture measured diagonally

14-inch picture tube measured diagonally

VIDEO IN (phono jack) : lVp-p,

75ohms unbalanced, sync negative

AUDIO IN(phono jack) : 408mVrms

(100%

impedance : 47k ohms

120V AC, 60Hz 97W (Max.) 3W (STAND BY)

Remote Commander RM-781

with 2 size AA (R6) batteries VHF/UHF telescopic dipole antenna (1) Antenna connector (1)

U/V mixer EAC-66 Connecting cord etc.

77mm X 1

modulation)

VMG606M/607M,

Speaker Impedance Speaker Wattage Dimensions Weight

Designs and specifications are subject to change without notice.

MODELS OF THE SAME SERIES

1 KV-13TR24X

KV-13TR14,‘13TR24

US Model

Chassis No.

SCC-D37L-A

Canadian Model

Chassis No.

P-3B

812

Approx. 2W Approx. 356X 331 X 407 mm (w/h/d) Approx. 10.5kg

SCC-D36H-A

CHASSIS

TRINITRONB

COLOR TV

SONY@

TABLE OF CONTENTS

Section Title

1. GENERAL

Location

1-1.

Presetting

l-2.

Watching

1-3.

Adjusting

l-4.

Enjoying the Convenient Features ....................7

1-5.

Timer/Block..

l-6.

Controls.. ....................................... .

TTJ

Channels.. ....................

TT,~

Programs..

the Picture

................................................... .

2. DISASSEMBLY

Service Position

2-l.

Picture Tube Removal ....................................

2-2.

..............................................

3. SET-UP ADJUSTMENTS

Beam Landing

3-l.

Convergence.. ..................................................

3-2.

Focus ..............................................................

3-3.

Sub

3-4.

3-5.

BRT

White Balance .................................................

.................................................

.........................................................

Z..

...........

..................................

.......................................

13 14 14

Section

4. SAFETY RELATED ADJUSTMENT....................... 15

5. ELECTRICAL ADJUSTMENTS

5-1.

A Board

Adjustment

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. DIAGRAMS

Circuit Board Location.. .................................

6-1. 6-2.

Printed Wiring Board

Schematic Diagram ..........................................

6-3.

Semiconductors.. ..............................................

6-4.

EXPLODED VIEW

ELECTRICAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PARTS LIST

.....................................

. . . . . ..a............................

20 23

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 TO 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 TO SAFE OPERATION

IDENTIFIED IN THIS MANUAL. FOLLOW THESE PRO-

CEDURES WHENEVER CRITICAL COMPONENTS ARE

REPLACED OR IMPROPER OPERATION IS SUSPECTED.

AkE

ATTENTION!!

AFIN D’EVITER TOUT RISQUE D’ELECTROCUTION

PROVENANT D’UN CHkBIS SOUS TENSION, UN TRANSFORMATEUR D’ISOLEMENT DOIT ETRE

UTILISC LORS DE TOUT

LE CHk!SlS DE CE RiCEPtEUR EST DIRECTEMENT

RACCORO~ i& L’ALIMENTATION SECTEUR.

ATTENTION AUX COMPOSANTS RELATIFS A LA

LES COMPOSANTS IDENTIFIiS PAR UNE TRAME ET

PAR UNE MARQUE

LES VUES EXPLOSiES ET LES LISTES DE PIECES SONT D*UirE IMPORTANCE CRITIQUE POUR LA

SiCURlTi

PLACER QUE PAR DES COMPOSANTS SONY DONT LE

NUMiRO DE PIiCE EST INDlOUi DANS LE

MANUEL OU DANS DES SUPPLiMENTB PUBLliS PAR SONY. LES RiGLAGES DE ‘*CIRCUIT DONT L’IMPOR- TANCE EST CRITIQUE POUR LA SkCURITi DU

FONCTIONNEMENT SONT IDENTIFIES DANS LE

PRiSENT MANUEL. SUIVRE CES PROCiDURES LORS

DE CHAOUE REMPLACEMENT DE COMPOSANTS CRITIQUES. OU LORSQU’UN MENT EST SUSPECTi.

DU FONCTIONNEMENT. NE LES REM-

ASUR

DiPANNAGE.

ShURITi!!

LES

SCHiMAS

MAUVAIS

DE PRiNCIPE,

PRhENT

FONCTIONNE-

-2-

SAFETY CHECK-OUT

(US Model only)

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

Check the area of your repair for unsoldered or

poorly-soldered connections. Check the entire board surface for solder splashes and bridges.

Check the inierboard wiring to ensure that no wires are “pinched” or contact high-wattage resistors.

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.

Look for parts which, though functioning, show

obvious signs of deterioration. Point them out

to the customer and recommend their replacement ,

Check the line cord for cracks and abrasion.

Recommend the replacement of any such line

cord to the customer.

Check the condition of the monopole antenna (if any). Make sure the end is not broken off, and has the plastic cap on it. Point out the danger of

impalement on a broken antenna to the customer,

replacement.

Check the B+ and HV to see they are at the values specified. Make sure your instruments are accurate; be suspicious of your HV meter if sets always have low HV.

Check the antenna terminals,

“metallized” knobs, screws, and all other

exposed metal parts for AC leakage. leakage as described below.

and’ recommend the antenna’s

meta!

trim,

Check

(

KV-13W871

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 microampers). current can be measured by any one of three methods.

A commercial leakage tester, such as the

Simpson 229 or RCA manufacturers’ instructions to use these instruments.

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 volt-

The

meter.

analog meters must have an accurate voltage scale. The Simpson 250 and Sanwa

SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. 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

water pipe with an ohmmeter. The reading should be

zero ohms. If a cold-water pipe is not accessible,

connect a 60-100 lamp) between the hot side of the receptacle and the

retaining screw. Try both slots, if necessary, to locate

the

hot side of the line, the lamp should light at

normal brilliance if the screw is at ground potential. (See Fig.

“limit” indication is 0.75V, so

.watts

WT-540A.

trouble light (not a neon

Leakage

Follow the

low-

cold-

liig. A.

To Exposed Me tat

Parts on Set

0.15pF

Earth Ground

Using an AC voltmeter to check AC leakage.

voltmeter

10.75 VI

-3

Trouble Light

Cold-water Pipe

Fig. 6.Checking for earth ground.

l-l. LOCATION OF CONTROLS

Ffefer

to the

pai

mdlcated I” 0 for detals

SECTION I

GENERAL

RemotecornmandsrRY-781

-SLEEP

MUTING button

r----------u

Monitor-

I I

1---------I

TV,VIDEO button ’

On-screen displays

Channel numbers

a *

. “MUTfNG”or “SLEEP” mdlcatlon . ‘VIDEO

b) c) *

lndlcatu3n

‘AUTO PROGRAM’, ‘TIMER or TIMER BLOCK mdlcaton Bar dwplay for volume OP

Currpnt +,me

for

Twner/Block

VOLUME

CHANNEL

picture

adJustmeN

+/-

buttons

+/-

AUDIO IN jack

VIDEO IN jack

buttons

TfMER lamp

bOWER

me....

control detector

switch

TIMER/BLOCK setting buttons (TIMER/BLOCK, CLEAR, AM/PM,

OFF/REPEAT)

Channel presetting buttons (AUTO PGM, ADD, ERASE)

Channel number buttons

DISPLAY button

PICTURE

+I-

buttons

VOL (volume)

+I-

buttons

. In normal operaton.

the Commander does not operate properly, the

might

l To

the battenes when the Commander wll not be used for a

long me.

l If a Remote Commander that

to operate

used to operate another N. the TV may not operate properly

batteries will

be exhausted Replace them wth new ones.

avoid

damage from

this N.

or of the suppked Remote Commander

button

POWER switch

Picture adjusting buttons (SELECT, RESET, LEVEL

CABLE button

TV/VIDEO button

ENTER button

JUMP button

CH (channel) +/-buttons

-The functions of these buttons are also

available

last up to half a year.lf

posstble

battery leakage, remove

not recommended IS used

on ihe TV.

batteries

VHF/UHF antenna terminal

l-2. PRESETTING TV CHANNELS

Press POWER on the TV or the Remote Commander to turn the N on.

To preset VHF or UHF channels channels

Press AUTO PGM.

“AUTO PROGRAM IS dlsplayed on the screen and recavable

channels (other than the channels already preset) wll be preset I”

numerical sequence The channels

umt’s

memory When no more channels can be found the the lowest numbered channel IS dIsplayed

RM-781

Recewable channels of thls TV are:

VHF 2.13

1 UHF ,469 I

Cable

125

To add the channels that

p,og,amm,ng because the,, s,gna, strength was loo weak or lo

erase unnecessary channels, follow the steps I”To preset only

the

dewed

channeis on the next Page

could

not be preset wth

automatic

TO check Preset channels

PESS CH +,-

the “VIDEO” Press the TVNIDEO bunon on the TV or the Remote Commander so that a channel “umber appears

md,catlon IS dasplayed

prewously

programrmng

To preset cable TV

preset reman I” the

stops ant

on the screen

-ENTER

Repeat steps 1 and 2 for other channels to be added or erased

Number on this TV

Correspo”d!“g

Check

,nformabon on the ava,,able channels

CAT” channel A 8 A-7 A-6 A

w,th your local cable TV company for more complete

6 14 15 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30

. . . . . . . . . . . . . . . .

Press the channel number button(s) and then ENTER to select

the channel to be added or erased.

To add channels - Press A

A ‘+ appears ior a moment

This

To erase channels - Press ERASE.

A - appears for a moment

Thus

The next

skipped

c 0

$3 95 96 97 98 99 100 to, 102

ADD

channel has now bee” added to the channel scan memory

ERASE

channel has now bee” erased from the channel scan memory

t,me

the CH +/- button IS pressed

CableT” channel chart’

Cable TV systems use letters or numbers 10 designate channels To tune I” a channel refer lo the

FGHIJK

115 1\4 4\3 .a2 1\? w-59w.60~.6

The des,g”at,on of the cable TV channels conformS 10 the

EWNCTA recommendat~o”

cha”

below

LMNOPrI

..__

this

channel

W.82 W.83

will

123 124 125

wed

l-3. WATCHING TV PROGRAMS

14. ADJUSTING THE PICTURE

Press POWER on the N or the

Commander to turn the N on.

Press CABLE so that the

Select a channel in one of the

To scan the preset channels in numerICal :

SeCf”e”Ce,

press CH

+I-

ENTER-

Remote

appropriate

wew

VHF or UHF

channels

followmg

To select a channel dwectly,

press the channel number

I button(s) and then ENTER I For example, to select channel 1

10.

To wew cabel TV channels

two ways:

press 1 0 and ENTER

RESET

SELECT

LEVEL+/-

-PICTURE +/-

RM-781

Press SELECT repeatedly appears. then press LEVEL +/-

purplish

decrease 1

color mterwty

unto1

the on-screen

- LEVEL +

r--I

k-*

- 1 TO

BRIGHT (brightness)

- LEVEL +

HUE

- LEVEL +

display

of the

color

Item

lo be adjusted

mcrease

lntenslty

RM-781

press VOL + or-to adlust the volume.

Darker

’

- .y

SHARP (sharpness)

- LEVEL +

Srlghter

Note

To turn off the N

Press POWER on the TV or the Remote Commander

awn

adlust plCt”FZ COtItraSt

IZF-

PICTURE

press

InCreaSe pcture

cm,,ras, w,,h wwd

Sharper

color

l-5. ENJOYING THE CONVENIENT FEATURES l-6. TIMER/BLOCK

MUTING-

DISPLAY-

RM-7t

-SLEEP

-JUMP

Muting the sound

Press MUTING.

The “MUTING” indication will appear on the screen.

To restore the sound. press MUTING

Keeping the channel displayed

Press DISPLAY.

To make the channel display disappear, press DISPLAY

agal”.

Using

the SLEEP timer

Press SLEEP

The TV will be turned off automatically after about one hour. The green “SLEEP ON” indication will appear on the screen for a few seconds when SLEEP 1s pressed and the red “SLEEP” indication will appear one mmute before the TV is turned off. To cancel the SLEEP timer, press SLEEP the TV. The “SLEEP OFF” indication will appear when SLEEP is pressed

Switching quickly between two channels

Press JUMP

Each time JUMP IS pressed. the channel which appeared on the screen directly before IS recalled. you to keep track of two programs alternately.

agam.

agal”

or VOL +

agam.

Thts

button enables

or turn off

Internal clock

Program start

Channel BLOCK

The buttons used for the above functions are located on the Remote Commander.

Once the Internal clock IS set. the current time will appear on the screen. It IS necessary to set the clock correctly to activate the program stalt TIMER and channel

TlMER

Makes a program of your Blocks a channel from appearmg on the screen for 12 hours.

Use channel BLOCK to mevent children from watchma undesirable

CLEAR

TIMER/BLOCKTIMER/BLOCK

AM/PM OFF/REPEAT

Channel numberChannel number

buttons

ENTER

choice

appear on the screen automatically at the dewed time.

proarams.

To set the mternal clock, program start TIMER and channel BLOCK,

must summon the corresponding “pages”. “clock page.” “TIMER page”

and “BLOCK page.” To change the “pages”. press TIMEWBLOCK.

IT/Bstands for the TIMEWBLOCK button.

“AM”/“PM”

indication disappears

k--l

before “AM/PM”

T/B

YOU

All settmgs will be erased from the unit3 memory it the umt 15 unplugged. or if a power

failure

omws.

. The TIMER and BLOCK will overate ontv if :he clock is set correctI”. . ,I the TIMER and BLOCK are

blocked channel wilt appear on the screen at the time set on the TIMER.

;et tar o”&pp,“g

times .,n the

sam;

channel. the

Example: To set the clock to

Press TIMER/BLOCK once to change from “normal page”

“clock

page.-

Press 0.9,O. 5 AM/PM (0 necessary).

9:OS

I I 1

TIMEWBLOCK

“clock page”

Make

sure

that the clock has been set correctly before Setting the channel BLOCK.

Example: To set the BLOCK for a program which begins at

Press TIMER/BLOCK three times to change from “normal page” to “BLOCK page.”

Press

0.9.3.0.

Numbers will “wmk” to

Press 8, ENTER (0 not necessary). Numbers will “wmk” to

Indicate

ENTER (0 necessary).

Indicate

that the time has been Set.

that the channel has been Set.

930 AM

TIMEWBLOCK

on channel 9

“BLOCK page”

(indications m red)

If you have performed the operation correctly, press

ENTER.

The numbers will “wmk” to set. (The 0 m front will disappear.)

If you have made a mistake, press CLEAR and return to step 2. The “AM/PM” indication will disappear after 2 seconds.

To summon “TIMER page,” press TIMER/BLOCK before the “AM”/“PM” indication disappears.

To retwn to the “AM”/“PM” indication has disappeared.

“normal

page,” press TIMER/BLOCK after

To reset the clock, s”mm~” “cloCk page” and

before the “AMY’PM” indication disappears. Then follow the

Indicate

that the clock has been

Press

CLEAR

ENTER

The BLOCK has now been set.

If you have made a mstake, press CLEAR and return to step 2.

At the preset time, the be blocked from wew and the sound will be muted. A red “BLOCKED’ indication will appear on the screen while the channel is blocked. Normal reception will be resumed after 12 hours.

To return to normal reception white the channel is blocked,

recall “BLOCK page” and press CLEAR. The BLOCK setting blocks a speafled channel for the same

12.how pewad everyday.

TO clear BLOCK setting. summon “BLOCK page” and Press CLEAR. To reset, clear the setting and follow fhe steps

steo 2.

picture

of the selected channel will

above

from

Make sure that the clock has been set correctly before setting the program start TIMER.

Example: To set the TIMER for a program

Press TIMERBLOCK once to change from

“normal page” to “clock page.”

Press TIMER/BLOCK before the “AWf’PM”

indlcabon

disappears and summon “TIMER

page

which

begins at IO:30 PM on channel 12

TIMEWBLOCK

TIMER/BLOCK

“clock page”

Press 1.0.3.0, AM/PM, ENTER

Numbers

will

“v,“W lo

lndlcate

been

SB,

Press 1,2, ENTER (0 not necessary) Numbers

will

channel has been set

The TIMER lamp

been set

If you have

made

A, the preset and the TIMER lamp wtll go out The TIMER

you are wa,ch,ng a TV Program or a VCR playback. or

have turned OR the TV

If no

button

is pressed within 2 hours after the preset time. an

‘OFF

,“d,ca,,on “,,I, appear

1s sttll

no,

,o”cCed during

a”tOmatlCally

a* a

“wmk” to

wtll ltght

nIlstake, p’ess

tme,

the selected channel

the screen

the 1

m,n”,e. the

safely

precautvx

up to

&I&;,

. I 6

mdlcate

lndlcate

CLEAR

and ref”m 10 step

WI,,

appear on the screen

w,,,

for 1

TV wl,

that the

that the TIMER has

operate whether

m,n”,e If

turn

bme

has

AM/PM ENTER

eve”

If you

bunon

o”

me TIMER operates Only once. but the bme and the channel I”,,,

remam m fhe “W’s

If you want to preset the same channel at the same time for a

MUE lo indwte ,hai

If you want agan so that ,he TIMER ‘amp goes out I, IS no, necessary to summa” -TIMER page” to “se the OFF/REPEAT F”“hermore. ,h,s ,“m?.d ofi

To clear the TlUER setting. summon “TIMER page” and press CLEAR To reset. clear the seblng and lollaw the s,ePs from step 3

memory

de, press OFF~EPEAT

the TIMER has been r.?acWa,ed

deact,vate

button 15

“TIMER page”

TIMER lamp

w,,

,lght “p

the TIMER, press OFF/REPEAT

effective even 1, the

bun””

TV has bee”

+ 20 hidden pages