Sony KV.20XBR, KV25XBR Service Manual

SON~

TRINITRON~ COLOR TV

KV.20XBR/25XBR

(CABLE COMPATIBLE TV)

OPERATING INSTRUCTIONS

Welcome to the advanced world of Sony TV. For the

best results and the utmost satisfaction from your new

set, please read this manual thoroughly and retain it for

future reference.

OWNER'S RECORD

The model and serial numbers are located at the rear.

Record these numbers in the spaces provided below. Refer

to them whenever you call upon your Sony dealer regarding

this product.

Model No. Serial No.

CONTENTS

Warn i ng ..... ............ ....... ..................... ....... ................... 2

Precauti ons..................................... ................ ....... ..... 3

Featu res........................... .............. ....................... ...... 3

Location of controls.................................................. 4

Set -u p .. ..................... ....... ............. .............. .................. 5

Speakers..... ....... ..................... ...... ....... .......... .......... 5

Remote Commander .............................................. 6

Operation ........... ........ ....... ............................. .............. 6

Viewing TV programs............................................. 6

Listening to multichannel TV sound (MTS)

broadcasts .............. ....... .................... ......... ..........7

Additional picture and sound adjustments ........ 8

Presettng channels ................................................... 9

Adding channels..................................................... 9

Erasing channels.................................................... 9

Applications with other optional equipment ..........10

Con necti ons...................................... ................ ...... ....11

Optional audio/video connecting cables ......,.....11

VCR connection......................................................12

Microcomputer connection ..................................14

Selecting the various audio and video sources......15

Enjoying FM simulcasted programming .................16

Antenna/cable connection ........................................17

Specificati ons.. ............... ............................... ....... ......18

Troubleshooting ..........................................back cover

The photograph and illustrations in this manual are those of the

KV-25XBR but the operations are the same on the KV-20XBR.

(91984 by Sony Corporation

To prevent fire or shock hazard, do not ex.

pose the unit to rain or moisture.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This symbol is intended to alert the

user to the presence of uninsulated

"dangerous voltage" within the prod-

uct's enclosure that may be of suffi-

cient magnitude to constitute a risk of

electric shock to persons.

This symbol is intended to alert the

user to the presence of important

operating and maintenance (servicing)

instructions in the literature accompa-

nying the appliance.

INFORMATION

This equipment generates and uses radio frequency

energy and if not installed and used properly, that is, in

strict accordance with the manufacturer's instructions,

may cause interference to radio and television recep-

tion. It has been type tested and found to comply with

the limits for a Class B computing device in accordance

with the specifications in Subpart J of Part 15 of FCC

Rules, which are designed to provide reasonable protec-

tion against such interference in a residential installa-

tion. However, there is no guarantee that interference

will nòt occur in a particular installation. If this equip-

ment does cause interference to radio or television

reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following

measures:

Reorient the receiving antenna

Relocate the equipment with respect to the receiver

Move the equipment away from the receiver

Plug the equipment into a different outlet so that

equipment and receiver are on different branch cir-

cuits.

If necessary, the user should consult the dealer or an

experienced radio/television technician for additional suggestions. The user may find the following booklet

prepared by the Federal Communications Commission

helpful:

"How to Identify and Resolve Radio-TV Interference

Problems". This booklet is available from the U.S.

Government Printing Office, Washington, DC 20402,

Stock No. 004-000-00345-4.

CAUTION

TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS

POLARIZED AC PLUG WITH AN EXTENSION CORD,

RECEPTACLE OR OTHER OUTLET UNLESS THE

BLADES CAN BE FULLY INSERTED TO PREVENT

BLADE EXPOSURE.

The shielded interface cable recommended in this

manual must be used with this equipment in order to

comply with the limits for a computing device pursuant

to Subpart J of Part 15 of FCC Rules.

PRECAUTIONS

FEATURES

i Safety I

. Operate the set only on 120 V AC.

. One blade of the plug is wider than the other for the

purpose of safety and will fit into the power outlet only

one way. If you are unable to insert the plug fully into

the outlet, contact your dealer.

. Should any liquid or solid object fall into the cabinet,

unplug the set and have it checked by qualified person-

nel before operating it any further.

. Unplug the set from the wall outlet if it is not going to

be used for several days or more. To disconnect the

cord, pull it out by the plug. Never pull the cord itself.

¡instaiiation I

. To prevent internal heat build-up, do not block the

ventilation openings.

. Do not install the set in a hot or humid place or in a

place subject to excessive dust or mechanical vibration.

I Cleaning I

Clean the set with a slightly damp soft cloth. Use a mild

household detergent. Never use strong solvents such as

thinner or benzine as they might damage the finish of

the cabinet.

I Repacking I

Retain the original carton and packing materials for

safe transport of this set in the future.

Use of this television receiver for other than private

viewing of programs broadcast on UHF or VHF or

transmitted by cable companies for the use of the

general public may require authorization from the

broadcaster/cable company and/or program owner.

. New MicroblackTM TrinitronOO picture tube with more

finely pitched aperture grille for higher resolution,

higher contrast picture

. Buil.in stereo decoder decodes MTS (Multichannel

TV Sound) broadcasts into left and right stereo or SAP

(Second Audio Program) channels *

. Multi.band VHF/UHF/CATV tuner receives up to 125

cable channels for a total of 181 pOSSible off.air and

cable channels

. Supplied detachable speakers featuring Sony's APM

(Accurate Pistonic Motion) technology, magnetically

shielded to provide superb sound reproduction with no

interference to picture quality

. Two buil.in video and L1R audio line inputs and a new

AV uniconnector allow direct hook-up to VCRs, video

disc players, video games or other audiolvideo sources.

The AV uniconnector receives combined video and L1R

audio signals for one easy connection.

. Buil.in video and L1R audio line outputs provide the

selected output from the TV tuner or any of the equip.

ment connected to the audio-video line inputs or the AV

uniconnector.

. An A V (audio and video combined) type output jack

for continuous output from the TV tuner and easy con-

nection

. Buil-in RGB input for higher resolution display of

computer-generated text and color graphics

. Full-function RM-724 Remote Commander provides

wireless control of all operating controls

. On-screen displays for easy reference to operating

modes and adjustments

. Trinitone™ control allows you to adjust the color

temperature(tint) of the picture for the most pleasing

color

. New Dynamic Coior™ circuitry assures accurate,

life-like skintones and pure whites

. Dynamic Picture™ circuitry automatically adjusts

the picture contrast to produce more detail in bright and

dark areas of the scene

. Dynamic Focus™ circuitry automatically focuses the

scanning electron beam for enhanced sharpness over

the entire picture, especially in the corners

. Colorpure Filter™ separately processes 81W picture

information from color information to produce a

dramatically sharper picture

* Depends on availability of off-air stereo broadcasts.

LOCATION OF CONTROLS

For details on the use of each control, refer to the pages

indicated in brackets.

See page 10 for the location of jacks and controls on the

back.

Front

r-- --,

L_____J

r--------- ---,

L_____________J

".---..

I i

i I

L___-,

On screen display for the following:

. Channel numbers

. "MAIN", "SAP" or "BOTH" modes

. The selected input sources, "VIDEO 1, 2 or 3",

"EXT-A" or "RGB"

. The "AUX", "MUTING" or "SLEEP" indicators.

Item display

The selected item to be adjusted by the ADJUSTMENT buttons

or the "TRINITONE" and "RESET" indicators will appear here.

Adjustment display

Indicates level of the various adjustments made to the

picture and sound.

VIDEO lamp 1151

SLEEP lamp 171

POWER switch 171

Remote control detector 161

STEREO lamp 171

RGB lamp 1151

CHANNEL scan buttons 171

VOLUME buttons 171

~..

PHONES (headphones) jack

(stereo mini.type) 181

VIDEO 2 IN (input) AV uniconnector

110,12,13,141

TV OUT (output) AV jack 110,131

CABLE ON/OFFbutton 171

Projections for attaching speakers.

(¡~

ERASE button 191

TVNIDEO button 1151

RGB button 1151

õ 0 0

PICTURE buttons 171

ADJUSTMENT buttons 181

ANT/AUX button 171

MTS (Multichannel TV sound) button 171

AUTO STEREO selector 171

ADD button 191

SET.U P

. i

SPEAKERS

Placement

Attaching the speakers to the TV

Right speaker

SPEAKER terminals

Turn the knobs on both sides

counterclockwise, adjust the

angle and then turn the knobs

clockwise to lock the speaker

in position.

Left speaker

Connection

The speaker cord marked with a red line should be con-

nected to the EB (red) terminal and the cord unmarked to

the e (black) terminal for correct in-phase operation.

While pressing the

button, insert the

wire into the hole,

then release the

button.

Pull lightly on the

connection to make

sure it is secure.

Right speaker Left speaker

The "APM" label should be right side up.

If desired, the speakers can be placed separately from

the TV by unfolding the stand.

Unfold

If desired, larger 8-ohm speakers can be used as long as

they are rated at 8-ohm impedance.

Expose and twist the wire ends of the cords of your

speakers as illustrated below, and make the correct EB

e connections. For large speakers, set BASS BOOST

switch on the TV to "OFF" to prevent excessive bass.

Strip about 5/8" (15mm)

. Adjust the angle of the speakers, for best sound pro.

duction.

Caution

. Be sure to use speakers that are rated at 8-ohm im-

pedance with normal power holding capacity of more

than 7W for the KV-20XBR and of more than 10W for the

KV-25XBR.

. Make sure that none of the wire strands stick out,

making contact with the neighboring speaker terminals.

. If you have connected a pair of speakers other than

the supplied speakers, make sure to place the TV set at

a distance away from the speakers so that it will not be

affected by the speaker magnets. If a temporary prox-

imity to magnets should cause portions of the picture to

have poor color, turn the POWER off, and after about 10

minutes, turn it on again.

Speakers with low magnetic flux leakage such as the SS-X10A

speaker system (optional) may be placed near the set.

of the wire insulation

from the ends...

. Never connect an amplifier and this TV simulta-

neously to the speakers as this may damage the TV.

5/8" (15mm)

Speaker system

Amplifier

Speaker cords

and then twist the

wire ends.

OPERATION

REMOTE COMMANDER

1 Turn the Remote Commander face down, press the

tab and lift the cover.

2 Place batteries in the Commander with the polarities

in the correct directions, as illustrated inside the

case.

3 Replace the cover.

Notes

. Use 2 size AA batteries (IEC designation R6).

. In normal operation, batteries will last up to half a

year. If the set does not operate properly, the batteries

might be exhausted. Replace all with new ones.

. To avoid damage from possible battery leakage,

remove the batteries for extended unused periods.

. Be sure that there are no obstructions between the

Commander and the TV.

. Operable range is limited.

Remote control

detector

VIEWING TV PROGRAMS

ThisTV set is capable of receiving normal VHF and UHF

broadcasts plus cable TV channels. (See "Cable TV

channel chart" below.)

Usually the Remote Commander is all that is needed to

operate the TV set in everyday use.

Remote Commander

RM.724

SLEEP button

MUTING button

TRINITONE

button

Channel number

buttons

DISPLAY button

ENTER button

POWER switch

RESET button

SELECT button

LEVEL +(R)/-(L)

buttons

ANT/AUX (antennal

auxilary) button

TVIVIDEO button

RGB button

MTS (Multichannel

TV Sound) button

~:J::

~::::

Buttons which

are not

duplicated

on the TV

CH (channel)

scan buttons

VOL (volume) buttons

PICTURE buttons

Cable TV channel chart *

Cable TV systems use letters or numbers to designate

channels. To tune in a channel, refer to this chart.

Number on this TV

Corresponding CATV channel

18 19

E F

31 32

R S T

20 21 22 23

G H I

33 34 35

U V

95 96 97 98 99 100 101 102 ......... ......... 123 124 125

A-5 A-4 A-3 A-2 A-1 W+59 W+60 W+61 ......... ......... W+82 W+83 W+84

Check with your local cable TV company for more com-

1 5

A-8 A-7 A-6

24 25 26

J K L M N

36 37 38 39 .................. 93 94

W W+1 W+2 W+3 ......... ......... W+57 W+58

6 14 15 16 17

28 29

plete information on the available channels.

*The designation of the cable TV channels conforms to

the EIA/NCTA recommendation.

+ 14 hidden pages