Sony FD Trinitron KV-32FX68B, FD Trinitron KV-32FX68E, FD Trinitron KV-32FX68K, FD Trinitron KV-32FX68U Service Manual

- 1 -

SERVICE MANUAL

AE-6B

CHASSIS

MODEL

COMMANDER DEST CHASSIS NO.

KV-32FX68B

RM-932 FR SCC-Q83M-A

KV-32FX68E

RM-932 ESP SCC-Q81P-A

MODEL

COMMANDER DEST CHASSIS NO.

KV-32FX68

RM-932

KV-32FX68K

RM-932 OIRT SCC-Q82H-A

KV-32FX68U

RM-932 UK SCC-Q84M-A

- 2 -

TABLE OF CONTENTS

Section Title Page Section Title Page

Caution .................... 3

Specifications .................... 4

Connectors .................... 6

Self Diagnostic Software .................... 7

1. GENERAL

Switching On the TV and

Automatically Tuning .................... 8

Introducing and Using the Menu

System .................... 9

Menu Guide .................... 9

Teletext .................... 10

Fastext .................... 10

Remote Control Configuration

for VCR/DVD .................... 11

Lifting the TV Set .................... 11

Specifications .................... 12

Troubleshooting .................... 12

2. DISASSEMBLY

2-1. Rear Cover Removal .................... 13

2-2. Speaker Disconnection .................... 13

2-3. Chassis Removal and Refitting .................... 13

2-4. Service Position .................... 14

2-5. G Board Removal .................... 14

2-6. Side Control Module Removal .................... 14

2-7. H2 Board Removal .................... 14

2-8. M Board Removal .................... 15

2-9. Service Connector for M Board.................. 15

2-10. Picture Tube Removal .................... 16

Bottom Plates .................... 17

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .................... 18

3-2. Convergence .................... 19

3-3. Focus Adjustment .................... 21

3-4. Screen (G2), White Balance .................... 21

4. CIRCUIT ADJUSTMENTS

4-1. Electrical Adjustments .................... 22

4-2. Test Mode 2 .................... 24

5. DIAGRAMS

5-1. Block Diagrams (1) .................... 25

Block Diagrams (2) .................... 26

Block Diagrams (3) .................... 27

Block Diagrams (4) .................... 28

5-2. Circuit Board Location .................... 28

5-3. Schematic Diagrams and

Printed Wiring Boards .................... 28

* A Board Schematic .................... 29

* A Board PWB .................... 35

* VM Board Schematic.................... 39

* VM Board PWB .................... 40

* H2 Board Schematic .................... 39

* H2 Board PWB .................... 40

* F4 Board Schematic .................... 39

* F4 Board PWB .................... 40

* H1 Board Schematic .................... 39

* H1 Board PWB .................... 40

* G Board Schematic .................... 41

* G Board PWB .................... 40

* C Board Schematic .................... 42

* C Board PWB .................... 43

* M Board Schematic .................... 44

* M Board PWB .................... 43

* D Board Schematic .................... 46

* D Board PWB .................... 45

5-4. Semiconductors .................... 47

5-5. IC Blocks .................... 50

6. EXPLODED VIEWS

6-1. Chassis .................... 52

6-2. Picture Tube .................... 53

7. ELECTRICAL PARTS LIST .................... 54

CAUTION

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

WARNING !!

AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE POWER LINE.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY SHADING AND MARKED

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.

ATTENTION

APRES AVOIR DECONNECTE LE CAP DE’LANODE, 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 RISQUE D’ELECTROCUTION PROVENANT D’UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR D’ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ Á L’ALIMENTATION SECTEUR.

ATTENTION AUX COMPOSANTS RELATIFS Á

LA SECURITÈ!!

LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE MARQUE SUR LES SCHÈMAS DE PRINCIPE, LES VUES EXPLOSÈES ET LES LISTES DE PIECES SONT D’UNE IMPOR-

TANCE CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS DES SUPPLÈMENTS PUBLIÈS PAR SONY.

- 3 -

CAUTION

Lead Free Soldered Boards

The circuit boards listed below [Table 1] used in these models may have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation e.g. F1, H1 etc [ see examples ]. The servicing of these boards requires special precautions to be taken as outlined below.

Table 1

example 1

example 2

It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints. Lead Free Solder is available under the following part numbers :

Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees centigrade. This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics.

For more information on the use of Lead Free Solder, please refer to http://www.sony-training.com

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WARNING (UK Models only)

The flexible mains lead is supplied connected to a B.S. 1363 fused plug having a fuse of 5 AMP rating. Should the fuse need to be replaced, use a 5 AMP FUSE approved by ASTA to BS 1362, ie one that carries the

ASA

mark.

IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT SUITABLE FOR THE OUTLET SOCKETS IN YOUR HOME, IT SHOULD BE CUT OFF AND AN APPROPRIATE PLUG FITTED. THE PLUG SEVERED FROM THE MAINS LEAD MUST BE DESTROYED AS A PLUG WITH BARED WIRES IS DANGEROUS IF ENGAGED IN A LIVE SOCKET.

When an alternative type of plug is used, it should be fitted with a

5 AMP FUSE, otherwise the circuit should be protected by a 5 AMP FUSE at the distribution board.

How to replace the fuse. Open the fuse compartment with a screwdriver blade and replace the fuse.

FUSE

- 6 -

Connected Not Connected (open) * at 20Hz - 20kHz

Pin No 1 2 4 Signal Signal level

1 Audio output B

(right)

Standard level : 0.5V rms Output impedence : Less than 1kohm*

Audio input B (right)

Standard level : 0.5V rms Output impedence : More than 10kohm*

Audio output A (left)

Standard level : 0.5V rms Output impedence : Less than 1kohm*

4 Ground (audio)

5 Ground (blue)

6 Audio input A

(left)

Standard level : 0.5V rms Output impedence : More than 10kohm*

7 Blue input 0.7 +/- 3dB, 75 ohms positive

8 Function select

(AV control)

High state (9.5-12V) : Part mode Low state (0-2V) : TV mode Input impedence : More than 10K ohms Input capacitance : Less than 2nF

9 Ground (green)

10 Open

11 Green Green signal : 0.7 +/- 3dB, 75 ohms,

positive

12 Open

13 Ground (red)

14 Ground (blanking)

_ _ Red input 0.7 +/- 3dB, 75 ohms, positive

_ (S signal Chroma

input)

0.3 +/- 3dB, 75 ohms, positive

16 Blanking input

(Ys signal)

High state (1-3V) Low state (0-0.4V) Input impedence : 75 ohms

17 Ground (video

output)

18 Ground (video

input)

19 Video output 1V +/- 3dB, 75ohms, positive sync 0.3V

(-3+10dB)

_ _ Video input 1V +/- 3dB, 75ohms, positive sync 0.3V

(-3+10dB)

_ Video input

Y (S signal)

1V +/- 3dB, 75ohms, positive sync 0.3V (-3+10dB)

21 Common ground

(plug, shield)

21 pin connector

Rear Connection Panel Front Connection Panel

- +

MONO

L/G/S/I

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- 7 -

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AE-6B SELF DIAGNOSTIC SOFTWARE

The identification of errors within the AE-6B chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See table 1, non fatal errors are reported using this method. Each time the software detects an error it is stored within the NVM. See Table 2.

Table 1

How to enter into Table 2

1. Turn on the main power switch of the TV set.

2. Program Remote Commander for Operation in Service Mode. [See Page 22].

3. Press ‘VIDEO’ ‘VIDEO’ > ‘MENU’ on the Remote Commander.

4. Using the Remote Commander, Scroll to the ‘Error Menu’ item using the down arrow key, then press the right arrow key.

5. The following table will be displayed indicating the error count.

Table 2

Note: To clear the error count data press ‘80’ on the Remote commander.

UNEMRORRE

20E 30E 40E 50E 60E 70E 80E 90E 01E 11E 21E 31E 41E 51E 61E

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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Flash Timing Example : e.g. error number 3

StBy LED

ON ON ON

OFF

- 8 -

Switching On the TV and Automatically Tuning

The first time you switch on your TV, a sequence of menu screens appear on the TV enabling you to: 1)

choose the language of the menu screen, 2) adjust the picture slant, 3) search and store all available

channels (TV Broadcast) and 4) change the order in wh ich the channels (TV Broadcast) appear on the

screen. However, if you need to change any of these settings at a later date, you can do that by selecting

the appropriate option in the (Set Up menu) or by pressing the Auto Start Up Button on t he TV set.

Connect the TV plug to the mains socket (220-240V AC,

50Hz)

The first time that the TV set is c onnected, it is usually

turned on. If the TV is off, press the on/off button on

the TV set to turn on the TV.

The first time you switch on the TV, a Language menu

displays automatically on the TV screen.

Press the or button on the remote control t o select

the language, then press th e OK button to confirm your

selection. From now on all the menus will appear in the

selected language.

The Country menu appears automatically on the TV

screen. Press the or button to select the country in

which you will oper ate the TV set, th en press the OK

button to confirm your selection.

• If the country in which you want to use the

TV set does not appear in the list, select ‘-’

instead of a country.

• In order to avoid wrong teletext characters

for Cyrillic languages we recommend to

select Russia country in the case that your

own country does not appear in the list.

Because of the earth’s magnetism, the picture might

slant. The Picture Rotation menu allows you to correct

the picture slant if it is necessary.

If it is not necessary, press or to select Not

necessary and press OK.

If it is necessary, press or to select Adjust

now, then press OK and correct any slant of the

picture between –5 and +5 by pressing or .

Finally press OK to store.

Language

Select Language:

Svenska

Norsk

English

Nederlands

Français

Italiano

If picture slants, please

adjust picture rotation

Not necessary

Adjust now

Country

Select country:

Sverige

Norge-Italia

Deutschland

Österreich

First Time Operatio n

8 First Time Operatio n

The Auto Tuning menu appears on the screen. Press the

OK button to select Yes.

The TV starts to automatically search and store all

available broadcast channels for you.

This procedure could take some minutes. Please

be patient and do not press any buttons, otherwise

the automatic tuning will not be completed.

In some countries the TV B roadcaster installs the

channels automatic ally (ACI system). In th is

case, the TV Broadcaster sends a menu in which

you can select your city by pressing

the or button and OK to store the channels.

If no channels were found during the auto tuning

process then a new menu appears automatically

on the screen asking you to conn ect the aerial.

Please connect the aerial (see page 6) and press

OK. The auto tuning process will start again.

After all available ch annels are captured an d

stored, the Programme Sorting menu appears

automatically on the scr een enabling you to

change the order in which the channels appear on

the screen.

If you wish to keep the broadcast channels in the

tuned order, go to step 8.

If you wish to store the channels in a different

order:

1 Press the or button to select th e

programme number with the channel (TV

Broadcast) you wishto rearrange, then press

the button.

2 Press the or button to select the new

programme number position for yo ur selected

channel (TV Broadcast), then press .

3 Repeat steps b)1 and b)2 if you wish to

change the order of the oth er channels.

Press the MENU button to remove the menu from the

screen.

Your TV is now ready for use

No channel found

Please connect aerial

Confirm

Programme: 01

Channel: C21

Auto Tuning

Searching...

Programme Sorting

Select channel:

Exit:

Programme:

01 TVE

02 TVE2

03 TV3

04 C33

05 C27

06 C58

Programme Sorting

Select new position:

Exit:

Programme:

01 TVE

02 TVE2

03 TV3

04 C33

05 C27

06 C58 05 C27

Do you want to start

automatic tuning?

Yes

The operating instructions mentioned here are partial abstracts from the ‘Operating

Instruction Manual’. The page numbers of the ‘Operating Instruction Manual’ remain

as in the manual.

SECTION 1 GENERAL

- 9 -

Introducing and Using the Menu System

Press the MENU button to switch the first level menu on.2•To highlight the desired menu or option, press or.•To enter to the se lected menu or option , press .

•To return to the last menu or option, press.•To alter settings of your selected option, pr ess / /

or .

•To confirm and store your selection, press OK.3Press the MENU button to remove the menu from the scre en.

Menu System

Menu Guide

PICTURE ADJUSTMENT

The “Picture Adjustment” menu allows you to alter

the picture settings.

To do this: af ter selectin g the item you want to alter

press , then press repeatedly / / or to

adjust it and finally press OK to store the new

adjustment.

This menu also allows you to customise th e

picture mode based on the programme you are

watching:

Live (for live broadcast programmes, DVD and

Digital Set Top Box receivers).

Personal (for individual settings).

Movie (for films).

•Brightness, Colour and Sharpness can only be

altered if “Personal” mode is selected.

•Hue is only available for NTSC colour signal (e.g:

USA video tapes).

•Select Reset and press OK to reset the picture to the

factory preset levels.

Level 1 Level 2 Level 3 / Function

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Your TV uses an on-screen menu system to guide you through the operatio ns. Use the following

buttons on the remote control to operate the menu system:

Menu System

Level 1 Level 2 Level 3 / Function

Effect Natural: Enhances clarity, detail and presence of sound by

using “BBE High Definition Sound system”

Dynamic: “BBE High Definition Sound system”

intensifies

clarity and presence of sound for better intelligibility

and musical realism.

Dolby

Virtual: Simulates the sound effect of “Dolby Surround Pro

Logic”.

Off: Flat response.

Treble Less More

Bass Less More

Balance Left Right

Reset Resets the sound to the factory preset levels.

Dual Sound

•

For a stereo broadcast:

Mono.

Stereo.

•

For a bilingual broadcast:

Mono (for mono channel i f available).

A (for channel 1).

B (for channel 2).

Auto Volume Off: Volume level changes according to the broadcast signal.

On: Volume level of the channels will stay the same, independent of

the broadcast signal (e.g. in the case of advertisements).

• If you are listening to the TV through headphones, the “Effect” option will automatically be

switched to “Off”.

• If you select “Dolby Virtual” on t he “Effect” option , the “Auto Volume” option will automatically

be switched to “Off” and vice versa.

The “BBE High Definition Sound system” is manufactured by So ny Corporation under

license from BBE Sound, Inc. It is covered by U.S. Patent No. 4,638,258 and No. 4,482,866. The

word “BBE” and BB E Symbol are trademarks of BBE Sound, Inc.

This TV has been designed to create the “Dolby Surround” sound effect by simulating the

sound of four speakers with two spea kers, when the broadcast aud io signal is Dolby Surround

encoded. The sound effect can also be improved by connecting a suitable external amplifier (for

details refer to “Connecting to external audio Equipment” on page 18).

Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the

double-D symbol are trademarks of Dolby Laboratories.

SOUND ADJUSTMENT

The “Sound Adjustment” menu allows you to alter

the sound settings.

To do this: after selectin g the item you want to alter,

press . Then press repeatedly / / or to

adjust it and finally press OK to store the new

adjustment.

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Sound Adjustment

Effect: Natural

Treble

Bass

Balance

Reset

Dual Sound: Mono

Auto volume: On

Sound Adjustment

Effect: Natural

Tre bl e

Bass

Balance

Reset

Dual Sound: Mono

Auto volume: On

- 10 -

Menu System

Level 1 Level 2 Level 3 / Function

MANUAL PROGRAMME PRESET

The “Manual Programme Preset” option in the

“Set Up” menu allows you to:

Preset channels or the VCR channel one

by one to the programme order of you r

choice. To do this:

After selectin g the ”Manual Programme

Preset” option, press then with

Programme option highlighted press .

Press or to select on which

programme number you want to preset the

channel (for VCR, select programme

number “0”). Then press .

ii The following option is only available depending on the country you have selected in the

“Language/Country” menu.

After selectin g the System option, press . Then press or to select the TV Broadcast system

(B/G for western European countries, L for Fran ce or I for United Kingdom) . Then press .

iii After selecting the Channel option, press . Then press or to select the channel tuning (“C”

for terrestrial channel or “S” for cable channels). Next press . After that, press the number

buttons to enter directly the channel number of the TV broadcast or the channel of the VCR signal.

If you do not know the channel number, press or to search for it. When you tune the desir ed

channel, press OK twice to store.

Repeat all the above steps to tune and store more channe ls.

Label a channel using up to five characters.

To do this: Highl ighting the P rogramme option, press the PROG +/- button to select the

programme number with the channel you wish to name. When the programme you want to name

appears on the screen, select the Label option and press . Next press or to select a letter,

number or “-“ for a blank. Press to confirm this character. Select the other four characters in the

same way. After selecting all the characters, press OK twice to store.

Fine tune the broadcast reception. Normally the automatic fine tuning (AFT) will give the best

possible picture, however you ca n manually fine tune the TV to obtain a better picture reception

in case the picture is distorted.

To do this: while watchin g the channel (TV Broadcast) you wish to fine tune, select the AFT

option and press . Next press or to adjust the fine tuning between -15 and +15. Finally

press OK twice to store.d)Skip any unwanted programme numbers when they are selected with the PROG +/- buttons.

To do this: Highl ighting the P rogramme option, press the PROG +/- button to select the

programme number you want to skip. When the programme you want to skip

appears on the screen, select the Skip option and press . Next pr ess or to select Yes.

Finally press OK twice to confirm and store.

To cancel this function afterwards, select “No” instead of “Yes” in the step above.e)View and record scramble d channels when using a decoder connected t o Scart i3/r3 directly

or through a VCR.

This option is only available depending on the country you have selected in the ‘Language/

Country’ menu.

To do this: select the Decoder option and press . Next press or to select On. Finally press

OK twice to confirm and store.

To cancel this function afterwards, select “Off” instead of “On” in the step above.

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Set Up

Language

Auto Tuning

Programme Sorting

Progamme Labels

AV Preset

Manual Programme Preset

Detail Set Up

Set Up

Language

Auto Tuning

Programme Sorting

Progamme Labels

AV Preset

Manual Programme Preset

Detail Set Up

Teletext

To switch on Teletext:

After selecting the TV channel which carries the teletext service you wish

to view, press .

To select a Teletext page:

Input 3 digits for the page number, using the numbered buttons.

• If you make a mistake, retype th e correct page number.

• If the counter on the screen continues sea rching, it is because the page is not available. If this is the

case, input another page num ber.

To access the next or preceding page:

Press PROG + ( ) or PROG - ().

To superimpose teletext on to the TV:

Whilst you are viewin g teletext, press . Press it again to ca ncel teletext mode.

To freeze a teletext page:

Press / . Press it aga in to cancel the freez e.

To reveal concealed information (e.g: answer to a quiz):

Press / . Press it again to conceal the information.

To select a sub page:

A teletext page may consist of several sub pages. In this case the page number that appear s on the upper

left corner will change from white to green and one or more arrows will appear next to the page number.

Repeatedly press the or buttons on the remote control to watch the desired sub page.

To Switch Off Teletext:

Press .

Fastext

Teletext

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

Teletext is an information service transmitted by most TV stations. The index page of the teletext

service (usually page 100) gives you information on how to use the service. To operate teletext,

use the remote contr ol buttons as indicated below.

Teletext errors may occur if you use a channel (TV Broad cast) with a weak signal.

Fastext service lets you access Teletext pages with one button push.

When you are in Teletext mode and Fastext is broadcast, a colour coded menu appears at the

bottom of the teletext page. Press the appropriate coloured button (red, green, yellow or blue) to

access the page corresponding to your menu choice.

- 11 -

Remote Control Configuration for VCR/DVD

In its default condition this remote control will operate the basic functions of this Sony TV, Sony DVDs

and most Sony VCRs. To control VCRs and DVDs of other manufacturers (and some Sony VCR models),

please complete the following steps:

Additional Information

• Before you start, look up the 3 digit code for your brand of DVD or VCR from the list below. On

those brands that have more than on e code, enter the first code nu mber.

• Sony will endeavour to update the software according to market changes. Therefore, please refer to

the code table included with the remote control for the latest code set.

Press the Media Selector button on the remote control repeatedly until the required

green light (VCR or DV D) is lit.

If Media Selector is on TV position, code numbers will not be stored.

Before the green light goes o ut, press and hold the yellow button for approximatel y

6 seconds until the green light starts flashing.3Whilst the green light is flashing, enter all three digits of the code for your brand of

VCR or DVD using the number buttons on the remote control.

If your selected code is entered correctly, all th ree green lights will be lit

momentarily.

Turn on your VCR or DVD and check that the main functions work.

• If your device is not working or some of the functions do not work please

check that you entered the correct code set or try the next code listed against

the brand.

• Your brand codes may be lost if w eak batteries are not replaced within a few

minutes. To reset your brand of DVD or VCR please repeat the above steps.

A small label is added insid e the battery door to allow you to record your

brand codes.

• Not all brands are c overed and not all models of every brand ma y be covered.

VCR Brand List DVD Brand List

Brand Code Brand Code

SONY (VHS)

SONY (BETA)

SONY (DV)

AIWA

AKAI

DAEWOO

GRUNDIG

HITACHI

JVCLGLOEWE

MATSUI

ORION

PANASONIC

PHILIPS

SAMSUNG

SANYO

SHARP

THOMSON

TOSHIBA

301, 302, 303, 308, 309

303, 307, 310

304, 305, 306

325, 331, 351

326, 329, 330

342, 343

358, 355, 360, 361, 320, 351

327, 333, 334

314, 315, 322, 344, 352, 353,

354, 348, 349

332, 338

358, 355, 360, 361, 320, 351

356, 357

328

321, 323

311, 312, 313, 316, 317, 318,

358, 359

339, 340, 341, 345

335, 336

324

319, 350

337

SONY

AIWA

DENON

GRUNDIG

HITACHI

JVC

KENWOODLGLOEWE

MATSUI

ONKYO

PANASONIC

PHILIPS

PIONEER

SAMSUNG

SANYO

SHARP

THOMSON

TOSHIBA

YAMAHA

001

021

018, 027, 020, 002

009, 028, 023, 024, 016, 003

025, 026, 015, 004

006, 017

008

015, 014

009, 028, 023, 024, 016, 003

013, 016

022

018, 027, 020, 002

009, 028, 023, 024, 016, 003

004

011, 014

007

019, 027

012

003

018, 027, 020, 002

Trinitron

Sony Corporation Printed in UK

rin

itr

Recyclable

4-094-189-11

Lifting the TV Set

- 12 -

Troubleshooting

Additional Information

Here are some simple solutions to problems which may affect the picture and sound.

If you continue to experience problems, have your TV serviced by qualified person nel.

Never open the ca sing yourself.

Problem Solution

No picture (screen is dark) and no

sound.

•

Check the aerial connection.•Plug the TV in and press the ! button on the front of the

TV. •If the standby indicator 1 is on, press TV I/1 button on

the remote control.

Poor or no picture (screen is dark),

but good sound.

• Using the menu system, select the “Picture Adjustme nt” menu

and select “Reset” to return to the factory settings .

No picture or no menu information

from equipment connected to the

Scart connector.

• Check that the optional equipment is on and press the t

button repeatedly on the remote control until the correct input

symbol is displayed on the screen.

Good picture, no sound.

• Press the 2+ button on the remote control.

• Check that “TV Speakers” is “On” in the “Detail Set U p”

menu.

• Check that headp hones are not connected.

No colour on colour p rogrammes.

• Using the menu system, select the “Picture Adjustme nt” menu

and select “Reset” to return to factory settings.

Distorted picture when changing

programmes or selecting teletext.

• Turn off a ny equipment connected t o the Scart connector on

the rear of the TV.

Picture slanted

• Using the menu system, select the “Picture Rotation” option in

the “Detail Set Up” menu to correct the picture slant.

Noisy picture when viewing a TV

channel.

• Using the menu system, select the “Manual Programme

Preset” menu and adjust F ine Tuning (AFT) to obtain better

picture reception.

• Using the menu system, select the “Noise Reduction” option in

the “Detail Set Up” menu and select “Auto” to reduce the

noise in the picture.

No unscrambling or unstable pictur e

whilst viewing a scrambl ed channel

with a decoder connected through

the Scart connector i3/r3.

• Using the menu system, select the “Set Up” menu. Then enter

to “Detail Set Up” option and set “AV3 Output” to “TV”.

• Check that the decoder is not connected on the scart

i2/ 2.

Remote control does n ot function.

• Check that the Media Selector on the remote control is set to

the device you are using (VCR, TV or DVD).

• If the re mote control does not op erate the VCR or DVD even

when the Media Selector has been set correctly. Enter the

necessary code set as explained on “Remote Control

Configuration for VCR/DVD” chapte r of this instruct ion

manual.

• Replace the batteries.

The standby indicator 1 on the TV

flashes.

• Contact your nearest Sony service centre.

Specifications

Additional Informati on

TV system: I Colour system:

PAL

SECAM, NTSC 3.58, 4.43 (only Video In)

Channel Coverage:

I: UHF B21-B69

Picture Tube:

Flat Display FD Trinitron WIDE:

•KV-32FX68U: 32” (approx. 82 cm.

measured diagonally)

•KV-28FX68U: 28” (approx. 71 cm.

measured diagonally)

Rear Terminals

1/ 1

21-pin scart connector

(CENELEC standard)

including audio/video

input, RGB input, TV audio/

video output.

2/ 2

21-pin Scart connector

(CENELEC standard)

including audio / video

input, RGB input, monito r

audio/video output.

21-pin Scart connector

(SMARTLINK)

(CENELEC

standard) including audio /

video input, S video inpu t,

selectable audio / video

output and Smartlink

interface.

Audio outputs (Left/Right) -

phono jacks

Side Terminals

S Video input – 4 pin DIN

video input – phono jack4 a udio input – phono jacks

headphones jack

Sound Output:

2 x 20 W (music power)

2 x 10 W (RMS)

Woofer:

30 W (music power)

15 W (RMS)

Power Consumption:

KV-32FX68U: 130 W

KV-28FX68U: 125 W

Standby Power Consumption:

0.3 W

Dimensions (w x h x d):

KV-32FX68U: approx. 882 x 567 x 5 62 mm.

KV-28FX68U: approx. 797 x 519 x 5 23 mm.

Weight:

KV-32FX68U: approx. 6 5 Kg.

KV-28FX68U: approx. 4 5 Kg.

Accessories supplied:

1 Remote Control (RM-932)

2 Batteries (IEC designated)

Other features:

• 100 Hz picture

• Teletext, Fastext, TOPtext (250 page TEXT

memory)

• Sleep Timer

• Smartlink (direct link between your TV set

and a compatible VCR. For more information

on Smartlink, please refer to the Instruction

Manual of your VCR).

• Dolby Virtual.

• BBE Digital

• Auto Format.

• ACI (Auto Channel Installation).

Design and specifications are subject to change without notice.

- 13 -

Remove the rear cover fixing screws indicated. Take care when removing the rear cover not to damage the speaker cables [Disconnect the speaker connector] as speakers are fitted inside the rear cover.

SECTION 2 DISASSEMBLY

2-1. Rear Cover Removal

To remove lift the main bracket rear slightly and slide the chassis away from the beznet. Ensure that the interconnecting leads are released from their purse locks to prevent damage being caused.

2-2. Speaker Connector Disconnection

When refitting the chassis ensure that the main bracket is located in the beznet guide slots before sliding the chassis forwards. Refit the interconnecting leads in their respective purse locks.

Before completely removing the rear cover disconnect the speaker connector which is located on the inside.

2-3. Chassis Removal and Refitting

- 14 -

2-4. Service Position 2-5. G Board Removal

To remove the G Board release the clips circled and ease the board gently away from the support bracket. Removal of the D board follows the same procedure.

Position the chassis as indicated to access the solder side. To gain access to the underside of the boards follow the instructions on page 17. [Removal and Replacement of the main bracket bottom plates ].

2-6. Side Control Module Removal

Clips

2-7. H2 Board Removal

Remove the two screws fixing the user control module to the side of the set. The control module can then be removed by sliding it towards the rear of the set allowing access to the H2 Board.

Screws

To remove the H2 Board release the two clips circled and ease the board gently away from the support bracket.

Clips

- 15 -

If the M Board needs to be removed for testing when the chassis is placed in its service position, it would be necessary to use an extender board and extension cable as indicated above. The Extender board and extension cable are available as a service part by ordering the part number as indicated.

2-8. M Board Removal

To remove the M Board gently release the two clips with a screwdriver and remove the board from its socket vertically.

2-9. Service Connector for M Board

To A Board

From M Board

Extender Board Assembly A-1642-293-A

- 16 -

Anode button

* REMOVING PROCEDURES.

Turn up one side of the rubber cap in the direction indicated by the arrow a

2 Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b

3 When one side of the rubber cap is separated from the anode button, the anode-cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c

How to handle the Anode-Cap

1. To prevent damaging the surface of the anode-cap do not use sharp materials.

2. Do not apply too great a pressure on the rubber, as this may cause damage to the anode connector.

3. A metal fitting called a shatter hook terminal is fitted inside the rubber cap.

4. Do not turn the rubber foot over excessively, this may cause damage if the shatter hook sticks out.

Removal of the Anode-Cap

2-10. Picture Tube Removal

WARNING:

BEFORE REMOVING

THE ANODE CAP

High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.

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 assy, degaussing coils and CRT grounding strap.

3. Remove the C Board from the CRT.

4. Remove the chassis assembly.

5. Loosen the Neck assembly fixing screw and remove.

6. Loosen the Deflection yoke fixing screw and remove.

7. Place the set with the CRT face down on a cushion and remove the Degaussing Coil holders.

8. Remove the Degaussing Coils.

9. Remove the CRT grounding strap and spring tentioners.

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.]

- 17 -

REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET

BOTTOM PLATES.

(1) REMOVING THE PLATES

In the event of servicing being required to the solder side of the printed wiring boards, the

bottom plates fitted to the main chassis bracket require to be removed.

This is performed by cutting the gates with a sharp wire cutter at the locations indicated by the

arrows.

Note : There are 3 plates fitted to the main bracket.

Only remove the necessary plate to gain access to the printed wiring board.

(2) REFITTING THE PLATES

Because the plates differ in size it is important that the correct plates are refitted in their original

location.

Please note that the plates need to be rotated 180 degrees from their cut position to allow the

tabs to be fitted into their catch positions.

Ta b

Catch

For safety reasons, on no account should the plates be removed

and not refitted after servicing.

- 18 -

• When complete readjustment is necessary or a new picture tube is installed, carry out the following adjustments.

• Unless there are specific instructions to the contrary, carry out these adjustments with the rated power supply.

• Unless there are specific instructions to the contrary, set the controls and switches to the following settings :

Contrast .................................. normal

Brightness .................................. normal

Preparation :

1. In order to reduce the influence of geomagnetism on the set’s picture tube, face it in an easterly or westerly direction.

2. Switch on the TV set’s power and degauss with a degausser.

(1) Adjustment of Correction Magnet for Y-Splitting Axis.

1. Input a crosshatch signal from the pattern generator.

2. Set the Picture control to minimum and confirm that the Brightness control is set to normal.

3. Position the neck assembly as indicated in Fig.3-2.

4. Loosen the deflection yoke fixing screw.

5. Move the deflection yoke as far forward as is possible.

6. Adjust the upper and lower pin symmetrically by opening or closing the Y-splitting axis correction magnets located on the neck assembly. [See Fig 3-3]

7. Return the deflection yoke to its original position and re-tighten its fixing screw.

Carry out the adjustments in the following order :

3-1. Beam Landing. 3-2. Convergence. 3-3. Focus. 3-4. White Balance.

Note : Test equipment required.

1. Color bar/pattern generator.

2. Degausser.

3. Oscilloscope.

4. Digital multimeter.

Fig.3-1

(2) Landing

Note : Before carrying out the following adjustments adjust the

magnets as indicated [See Fig.3-4].

1. Input a crosshatch signal from the signal generator.

2. Rough-adjust the focus and horizontal convergence.

3. Switch from the crosshatch pattern to an all-red pattern.

4. Move the deflection yoke backwards and adjust with the purity magnet so that the red is at the centre and it aligns symmetrically [See Fig.3-5].

5. Move the deflection yoke forward to the point where the entire screen just becomes red [Mark its position].

6. Move the deflection yoke further forward until the screen just changes colour at the edges. [Mark its position]

7. Position the deflection yoke between the two marks indicated above.

8. Input a crosshatch pattern from the pattern generator and rotate the deflection yoke so that the horizontal lines are parallel with the top and bottom of the screen.

9. When the position of the deflection yoke has been determined, fasten it with its fixing screw.

10. Switch the pattern generator to green then blue and confirm the purity.

11. If the beam does not land correctly in all the corners of the screen, use disk magnets to correct it. [Confirm the corner landing forgreen and blue]

Caution :

High voltages are present on the Deflection yoke terminals - take care when handling the Deflection yoke whilst carrying out adjustments.

Y-splitting axis correction magnet

Fig.3-3

Fig.3-2

Neck assy

Align the edge of the neck assy with the edge of the G2 grid on the G3 side.

SECTION 3 SET-UP ADJUSTMENTS

3-1. Beam Landing

- 19 -

GREEN

BLUE

RED

(1) Screen centre convergence [Static convergence]

1. Input a dot pattern signal from the pattern generator.

2. Normalize the picture setting.

3. [Moving vertically], adjust the V.STAT magnet so that the vertical red, green and blue dots coincide at the centre of the screen.

3-2. Convergence

By opening or closing the V.STAT magnet, the red green and blue dots move in the direction indicated below.

Note: Do not adjust the H.STAT by rotating the V.STAT

magnets as this can affect the focus setting.

Fig.3-5

Purity magnets

Align pips on each magnet

Fig.3-4

Align both Purity magnets to the vertical position

Purity control corrects this area

Disk magnets or rotatable disk magnets correct these areas (a-d)

Deflection yoke positioning corrects these areas

Disk Magnets

Center dot

R G

C Board

RV7375 (H STAT) H STAT Convergence (on mount side)

H STAT

convergence

control

V.STAT Vertical Static Magnet

Purity control magnets

- 20 -

4. Correction for HMC [Horizontal mis-convergence] and VMC [Vertical mis-convergence] by using the BMC [Hexapole] magnet.

a). HMC correction by BMC [Hexapole] magnet and movement of

the electron beam.

b). VMC correction by BMC [Hexapole] magnet and movement of

the electron beam.

Adjust the HAMP using HAMPL and HAMPR registers in the Dynamic Convergence section of the service menu.

HTIL correction can be performed by adding a THL correction assembly to the Deflection yoke.

C < D

C = D C > D C = D

R G

C D

R G B

R G

VMC correction(A) VMC correction(B)

THL Correction assy

HAMP Adjustment

HTIL Adjustment

YCH Adjustment

HMC correction(A) HMC correction(B)

A < B

A = B

RG B

A > B

A = B

RGB

RG B

TLV Adjustment

H-TRAP Adjustment

The H-TRAP should not be adjusted unless absolutely necessary as it affects the TLV settings.

+ +

YCH VR

Deflection Yoke

+ +

TLV VR

Deflection Yoke

HTRAP VR

+ +

Deflection Yoke

- 21 -

3-3. Focus Adjustment

1. Receive a television broadcast signal.

2. Normalize the picture setting.

3. Adjust the focus control located on the flyback transformer to obtain the best focus at the centre of the screen. Bring only the centre area of the screen into focus, the magentaring appears on the screen. In this case, adjust the focus to optimize the screen uniformly.

3-4. Screen (G2), White Balance

[Adjustment in the service mode using the remote commander]

G2 adjustment

1. Input a dot signal from the pattern generator.

2. Set the Picture, Brightness and Colour to minimum.

3. Apply 165V DC from an external power supply to the R, G and B cathodes of the CRT.

4. Whilst watching the picture, adjust the G2 control [SCREEN] located on the flyback transformer to the point just before the flyback return lines disappear.

Layout of each control

Note : If you are unable to adjust the corner convergence properly,

this can be corrected with the use of permalloy magnets.

1. Input an all-white signal from the pattern generator.

2. Program the Remote Commander for operation in Service Mode. [ See Page 22 ].

3. Enter into the ‘Service Mode’ by pressing ‘VIDEO’ button twice and ‘MENU’ on the Service Commander.

4. Select ‘Service’ from the on screen menu display and press ‘Right Arrow’.

5. The ‘Service’ menu will appear on the screen.[See Page 23]

6. Set the ‘Contrast’ to MAX.

7. Set the ‘R-Drive’ to 50.

8. Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white balance becomes optimum.

9. Press the ‘OK’ button to write the data for each item.

10. Set the ‘Contrast’ to MIN.

11. Set the ‘R-Cutoff’ to 29.

12. Adjust the ‘G-Cutoff’, and the ‘B-Cutoff’ with the left and right buttons on the remote commander so that the white balance becomes optimum.

13. Press the ‘OK’ button to write the data for each item.

White balance adjustment for TV mode

Y-splitting axis correction magnet

V STAT convergence magnet

BMC (Hexaploe) magnet

Purity magnet

a-d: screen-corner convergence defect

Permalloy Assy X-4387-214-1

Install the permalloy assembly for the area that needs correcting.

Convergence adjustment with permalloy

Focus

Screen

- 22 -

4-1. Electrical Adjustments

Service adjustments to this model can be performed using the supplied remote Commander RM-932.

SECTION 4 CIRCUIT ADJUSTMENTS

3. Press 99999. All three LED’s should light. The remote commander is now set to Service Mode.

4. To return the remote commander to normal operation mode repeat steps 1. and 2. then press 00000. All three LED’s should light. The remote commander is now set to normal mode.

Programming the Remote Commander for Operation in Service Mode

Setting the TV into Service Mode

1. Program the remote commander for operation in Service Mode as described above.

2. Turn on the TV main power switch.

3. Press the video standby button on the remote commander twice. ‘TT ’ will appear in the upper right corner of the screen. Other status information will also be displayed.

4. Press ‘MENU’ on the remote commander to obtain the following menu on the screen.

5. Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.

6. Press the right arrow button to enter into the required menu item.

7. Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.

Note :

· After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.

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1. Press the VCR/TV/DVD button until the TV LED lights.

2. Press and hold the yellow button for approx. 5 seconds until the TV LED flashes quickly.

- 23 -

Sub Colour Adjustment

1. Receive a PAL colour bar signal.

2. Connect an oscilloscope to Pin 6 of CN7001 [A Board].

3. Program the Remote Commander for operation in Service Mode. [ See Page 22 ].

4. Adjust the ‘Sub Colour’ [ Using ‘VIDEO’ ‘VIDEO’ ‘12’ ] so that the Cyan, Magenta and Blue colour bars are of equal levels as indicated below.

Same Level

B-Out Waveform

Sub Brightness Adjustment

1. Input a Monoscope pattern.

2. Program the Remote Commander for operation in Service Mode. [ See Page 22 ].

3. Press ‘VIDEO’ ‘VIDEO’ 13 on the Remote Commander.

4. Adjust the ‘Sub-Brightness’ data so that there is barely a difference between the 0 IRE and 10 IRE signal levels.

1. Input a video signal that contains a small 100% white area on a

black background.

2. Connect an digital voltmeter to Pin 10 of J7378 [C Board].

3. Program the Remote Commander for operation in Service Mode. [ See Page 22 ].

4. Adjust the Sub-Contrast [ Using ‘VIDEO’ ‘VIDEO’ ‘11’ ] to

obtain a voltage of 105 +/- 5V.

Sub Contrast Adjustment

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DNUOS

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LWS FWS

DACMACIN

rorrEMACIN

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)721+,0+( )721+,0+(

)1-,821-(

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)86+,0+(

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)04+,5+(

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ECIVRES

LOCBUS

EUHBUS

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THGIRBBUS

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EVIRD-R

EVIRD-G

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FFOTUCG

FFOTUCB

TXTrB

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jdA 82 42 64

+ 52 hidden pages

Sony FD Trinitron KV-32FX68B, FD Trinitron KV-32FX68E, FD Trinitron KV-32FX68K, FD Trinitron KV-32FX68U Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual