Sony KV-28FS20U Service manual

SERVICE MANUAL

BE-3E

CHASSIS

MODEL

KV-28FS20U

COMMANDER DEST CHASSIS NO.

RM-887 UK SCC-Q25G-A

MODEL

COMMANDER DEST CHASSIS NO.

TABLE OF CONTENTS

Section Title Page Section Title Page

Specifications .................... 3

Connectors .................... 4

Self Diagnostic Software .................... 5

1. GENERAL

Overview of the Remote Control................... 9

AutomaticallyTuning the TV .................... 9

Rearranging the TV Channels .................... 10

Adjusting the Picture .................... 10

Adjusting the Sound .................... 11

Setting up Dolby Pro Logic .................... 11

Changing the Screen Mode .................... 12

Choosing a Language .................... 12

ManuallyTuning the TV .................... 13

T eletext .................... 13

Specifications .................... 14

Troubleshooting .................... 14

2. DISASSEMBLY

2-1. Rear Cover Removal .................... 15

2-2. Chassis Assy Removal .................... 15

2-3.1 Service Position (1) .................... 15

2-3.2 Service Position (2) .................... 15

2-4. Wire Dressing .................... 16

2-5. A Board Removal .................... 16

2-6. A Extension Board .................... 16

2-7. Picture Tube Removal .................... 17

Bottom Plates .................... 18

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .................... 19

3-2. Convergence .................... 20

3-3. Screen (G2), White Balance ................... 22

3-4. Focus Adjustment .................... 22

3-5. White Balance .................... 23

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.

4. CIRCUIT ADJUSTMENTS

4-1. Electrical Adjustments .................... 24

4-2. TT T est Mode .................... 27

4-3. T T est Mode .................... 28

5. DIAGRAMS

5-1. Block Diagram (1) .................... 29

Block Diagram (2) .................... 31

Block Diagram (3) .................... 33

Block Diagram (4) .................... 35

5-2. Circuit Board Location .................... 36

5-3. Schematic Diagrams and

Printed Wiring Boards .................... 37

* C Board .................... 37

* D Board .................... 39

* A1 Board .................... 44

* J1 Board .................... 45

* VM Board .................... 47

* J2 Board .................... 49

* D2 Board .................... 50

* D1 Board .................... 51

* A Board .................... 54

* H Board .................... 63

5-4. Semiconductors .................... 67

5-5. IC Blocks .................... 69

6. EXPLODED VIEWS

6-1. Chassis .................... 71

6-2. Picture Tube .................... 72

7. ELECTRICAL P ARTS LIST .................... 73

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 !!

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 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.

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

LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE MARQUE 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.

SUR LES SCHÈMAS DE PRINCIPE, LES VUES

LA SECURITÈ!!

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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 13 AMP rating. Should the fuse need to be replaced, use a 13 AMP FUSE approved by ASTA to BS 1362, ie one that carries the

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

13 AMP FUSE, otherwise the circuit should be protected by a 13 AMP FUSE at the distribution board.

ASA

mark.

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

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21 pin connector

21 19 17 15 13 11

9 7 5 3 1

20 18 16 14 12 10

6 4 2

Pin No 1 2 4 Signal Signal level

1 Audio output B

3 4 Ground (audio) 5 Ground (blue) 6 Audio input A

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

8 Function select

9 Ground (green) 10 Open 11 Green Green signal : 0.7 +/- 3dB, 75 ohms,

12 Open 13 Ground (red) 14 Ground (blanking)

_ (S signal Chroma

16 Blanking input

17 Ground (video

18 Ground (video

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

_ Video input

21 Common ground

(right) Audio output B

(right) Audio output A

(left)

(AV control)

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

input)

(Ys signal)

output)

input)

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

Y (S signal)

(plug, shield)

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

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

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

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

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

positive

0.3 +/- 3dB, 75 ohms, positive

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

(-3+10dB)

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

(-3+10dB)

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

Rear Connection Panel

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S-Video

socket

BE-3E SELF DIAGNOSTIC SOFTWARE

The errors indicated below can be read using an Error Reader Display (Part Number S-188-90 0-10) connected to the service conn ector. Once an error has been detected it will then be displayed on the two digit error reader. During the power up procedure and during normal run time, the

micro’s self diagnostic procedures monitor for various errors. Errors displayed refer to the table indicated below.

Error Number Error Description

00 No error (TV Error Reader shows 00 in normal condition) 01 Not allowed (may be confused with Sircs response flash on LED) 02 Protection circuit trip (OCP, OVP & No V-Sync) 03 Reserved for OVP (Included in error 2 for BE-3E) 04 Reserved for No V-Sync (Included in error 2 for BE-3E) 05 AKB 06 IIC Scl Low <Power Up only> 07 IIC Sda Low <Power Up only> 08 IIC Sda & Scl Low <Power Up only> 09 Jungle controller no acknowledge <Power Up only> 10 Video Switch (CXA2040) no acknowledge <Power Up only> 11 Tuner no acknowledge 12 MSP no acknowledge 13 NVM no acknowledge 14 AV switch (CXA2089) no acknowledge (DS20 & DX20) 15 Not used 16 Port Expander (CXA1875) no acknowledge (DS20 & DX20) 17 Not used 18 Dynamic Convergence (CXA8070) no acknowledge 19 Cannot Initialise jungle (after initial power on check OK) - <Chassis Initialisation> 20 Jungle controller response failure after power up check (+9V test) 21 Video Switch (CXA2040) cannot power on reset - <Chassis Initialisation> 22 Video Switch (CXA2040) response failiure after power up check (+9V test) 23 NVM acknowledge fail after initialisation (STBY +5V - same as micro!) 24 MSP run-time failure <May Not Be Fatal - Display On Error Reader> 25 DSP run-time failure <May Not Be Fatal - Display On Error Reader> 26 M3L bus Clock low time out after data send <Run-Time Failure> 27 M3L bus Clock low time out after data send <At Power Up Check> 28 M3L bus Clock low time out after data send <At Initialisation> 29 M3L Txd Low <Power Up Only> 30 M3L Rxd Low <Power Up Only> 31 M3L Enable Low <Power Up Only> 32 Compact Text test fail <Power Up Only> 33 Compact Text does not respond (+5V test) 34 Compact text run-time failure <May Not Be Fatal - Display On Error Reader>

Protection Error (Error 2):

Once every main loop (approximately 200ms OSD mode, 50ms text or menu mode), the micro checks the protection pin (pin 66). If the protection pin is high 6 successive times, a protection error is diagno s ed . T he protection pin is not checked during the first 3 - 4 seconds after AC on.

If this error is diagnosed, the respective NVM register will be updated and the set goes straight into diagnostic standby with 2 flashes - no reset is attempted.

AKB Error (Error 5):

Once every main loop the micro checks the AKB stability by reading the IKR return from the Jungle IC. IKR=1 means that the AKB is stable, IKR=0 means that the AKB is unstable. If the AKB status is unstable for 10 seconds, an AKB error is diagnosed. AKB stability is not checked during the first 20 seconds after AC switch on.

If this error is diagnosed, the respective NVM register will be updated and the response LED will flash 5 times continually, but the set will not go into standby mode. If the AKB status becomes stable, and remains stable for 10 seconds, the LED will stop flashing.

Time / seconds

10090807050 60403020100

IKR Return

BCD EF

A. IKR Return first goes high after 12 seconds. B. Micro begins checking IKR Return status 20 seconds after power on. C. Micro detects IKR return = 0. D. Micro detects that IKR has been 0 for 10 seconds; NVM counter is incremented and the LED

starts flashing (flashes 5 times, off for 2 seconds, flashes 5 times, etc. E. Micro detects that IKR=1; LED continues to flash. F. Micro detects that IKR has been high for 10 seconds; LED stops flashing.

Startup Diagnostic Errors (Errors 6-18, 27, 29-32):

NVM Error Description

6 SCL pin low 7 SDA pin low 8 Both SCL and the SDA pins are low 9 No acknowledge from the jungle (CXA2076) 10 No acknowledge from the video switch (CXA2040) 11 No acknowledge from the tuner 12 No acknowledge from the MSP 13 No acknowledge from the NVM 14 No acknowledge from the CXA2089 video switch (DS20 & DX20) 16 No acknowledge from the CXA1875 video Port Expander (DS20 & DX20) 18 No acknowledge from the Dynamic Convergence (CXA8070) 27 M3L_TXD pin low after Compact Text RAM test. 29 M3L_TXD pin low 30 M3L_RXD pin low 31 M3LEN pin low 32 Compact Text RAM test fail

If any of these errors are detected, the re spective NVM register will be incremented. The software will then carry on with the power up sequence.

General IIC Device Run-time Errors (Error s 19-23):

NVM Error Description

19 No acknowledge from Jungle when attempting to initialise. 20 No acknowledge from Jungle when attempting to read registers. 21 AV Switch cannot complete reset during initialisation. 22 No acknowledge from AV Switch when attempting to read registers. 23 No acknowledge from NVM when attempting to read or write.

If any of these errors are detected, the respective NVM register will be incremented and the software will carry on.

Compact Text Run-time Errors (Errors 26, 28, 33 & 34):

NVM Error Description

26 M3L_TXD pin low when checking register 81 (implies that no communication was

28 M3L_TXD pin low when attempting to initialise (implies that no communication was

33 Compact Text RAM test failed during initialisation of devices.

In the case of these errors, the ‘device reset’ pin will be held low for 60ms, causing a hardware reset of Compact Text. Following this reset, a longer timeout will be all owed fo r the M3L b us to recover . If the err o r still e xists, th e NVM register will be incremented and the software will carry on.

possible).

NVM Error Description

34 Register 81 check fai l, b ut M3L_TXD pin high (impl ies that Compact Text has either

reset or become corrupted).

In the case, the ‘device r eset’ pin will b e held low for 60ms, causing a har dwar e re set of Compact Text. Compact T e xt will then be r e-ini tialised and the NVM counter up dated. This is the same as for errors 26, 28 and 33 except that the M3L bus timeo ut is not changed.

MSP and DSP Run-time Errors (Errors 24 & 25):

NVM Error Description

24 Error 24 can be caused by any of the following :

- After MSP initialisation, Scart Prescale Register check fail (implies that the MSP has either reset or become corrupted).

- MSP fails to acknowledge reset instruction.

- Scart Prescale Register check fail (implies that the MSP has either reset or become corrupted).

25 - DSP test byte corrupted (implies that the MSP has either reset or become

For both these errors, the software will refresh the MSP and DSP registers. If the errors still exist, the NVM counter will be incremented, and the software will carry on.

corrupted).

Error Display Mode

Error Display Mode is entered by the following sequence of commands :

Standby -> Informati on -> Digit 5 -> Volume Down -> TV

This mode will display a special menu, which will list all possible errors and the number of occurrances of each error (0 - 255, as stored in the NVM). There will also be a display of the current error (00 if no error). This display mode will appear as follows :

ERROR DISPLAY MODE

Current Error Code = 00

Error Code Occurrences Error Code Occurrences

2 2 19 0 3 -- 20 0 4 -- 21 89 5 0 22 0 6 0 23 0 7 0 24 0 8 0 25 4

9 0 26 5 10 0 27 0 11 0 28 3 12 0 29 0 13 0 30 0 14 3 31 0 15 0 32 0 16 0 33 3 17 0 34 38 18 6

Whilst in this mod e, the number of occurences of each error can be reset to 0 by following sequence of Sircs commands: Digit 8 -> Digit 0.

‘TT08’ will also reset this NVM data.

This mode can only be exited by switching off the TV.

The Current Error Code can also be read by using a TV Error Reader (IIC slave address 42H). This device simply receives 1 data byte, which is the error number in binary coded decimal form.

SECTION 1 GENERAL

Yes

Confirm: OK

Do you want to start

automatic tuning?

buttons on

‘LANGUAGE’ menu appears automatically on the TV

screen enabling you to select in which language you wish

to read the TV menu screens. Press the

the remote control to select your chosen language then

1. When switching on the TV for the first time, the

buttons to select

your selected language. Press the

press the OK button to confirm your selection.

‘YES’ then press the OK button to confirm.

2. The ‘automatic tuning’ menu appears on the TV screen in

Confirm: OK

Please confirm that

antenna is connected

the OK button to confirm. The TV starts to automatically

search and store all available channels for you. Please be

3. Ensure the antenna is connected as instructed, then press

patient and do not press any buttons.

channels, the ‘PROGRAMME SORTING’ menu appears

on the TV screen enabling you to change the order of the

channels on your TV.

If you do not wish to use this option, proceed to step 5.

If you wish to change the channel order, pr ess the

buttons to select the new programme number position for

your selected channel then press the OK button to

confirm. The selected channel now moves to its new

want to move, then press the OK button. Press the

programme position. Repeat this procedure if you wish to

buttons on your remote control to select the channel you

4. When the TV has finished tuning in all available

screen.

sort the order of other channels on your TV.

5. Press the MENU button to remove the menu from the TV

remote control to view the TV channels.

6. Press the PROGR+/- or the numbered buttons on the

6. Automatically tuning the TV

Quick Start Guide

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.

When you first switch on the TV, the following sequence of menu screens appear on the TV enabling you to 1) choose a language

for the TV menu screens, 2) tune channels to the TV, 3) arrange the channels.

To temporarily switch off TV

Press to temporarily switch off TV. Press again to

switch on from standby mode. To save energ y, w e

recommend switching off completely when TV is not

in use.

NOTE: After 15-30 minutes without a TV signal and

without any button being pressed, the TV switches

automatically into standby mode.

To select input signal or freeze teletext

Press to select inputs from the TV sockets (see Using

Optional Equipment section). In teletext mode, press

to freeze the displayed page. Press again to cancel.

To return to previous channel

Press to return to the previous channel you were

watching. Note: This can be done only if you watched

the previous channel for at least 5 second s.

To display the menu

Press if you wish to use the TV menu system. Press

again to remove the menu from the TV screen.

To select menu items

Use these buttons and the OK button to select the

options available in the menu system of this TV.

This button has no function

To change screen format

Press to change the size of the screen.

See Teletext section of manual for details.

To select channels

Press to select channels.

Overview

Overview of the remote control buttons

To mute sound

Press to mute TV sound. Press again to

restore the sound.

To reveal on screen information

Press to reveal all on-screen indications.

Press again to cancel. In teletext mode,

press to reveal concealed information (eg

answers to a quiz) then press again to

cancel.

To select channels

Press the numbered buttons to select

channels.

For double digit programme numbers,

e.g.23, press -/-- first, then the buttons 2 and

3. If you enter an incorrect first digit, select

-/-- button again to enter the programme

number of your choice.

To return to TV mode

Press to return to normal operatio n from

teletext mode or standby mode.

To select Teletext

Press to switch on Teletext.

To display picture menu

Press to change the picture settings. Press

the OK button to remove the displa y.

To display sound menu

Press to change the sound settings . Press the

OK button to remove the display.

To adjust TV volume

Press to adjust the volume of the TV.

Personal

Movie

Live

b button to

Adjusting the picture

Additional TV Features

Although the picture is adjusted at the factory, you can modify it to suit your own taste.

b button to confirm. For a

Movie (for films)

screen.

Picture Mode Picture Modeb Personal (for individual settings)

B Live (for live broadcasts)

Brightness*

Colour*

Sharpness*

Hue**

Scroll

Auto 16:9 b Off B On

Changing picture and sound modes quickly

You can quickly change the Picture Mode or the Sound Mode

without entering the ‘PICTURE CONTROL’ or the ‘SOUND

Contrast

Reset Resets picture to factory preset levels

Format Format (refer to page 15 for details)

*Only if you select ‘Personal’ in ‘Picture Mode’.

** Available for NTSC colour system only.

CONTROL’ menu screens.

V or v buttons to select the desired mode.

or the symbol for sound modes.

2. Press the

screen.

3. Press the OK button to remove the display from the TV

1. Press the symbol on the remote control for picture modes

b button to confirm.

V or v buttons on the remote control to select the

V or v buttons to select the item on the screen you

symbol on the menu screen then press the

menu on the TV screen.

1. Press the MENU button on the remote control to display the

2. Press the

wish to adjust then press the

description of the menu items and their effects, see the table

enter the ‘PICTURE CONTROL’ menu.

below.

3. Press the

b or B buttons to adjust your selected item.

V or v buttons to select the item on the screen you wish to

adjust then press the

5. Press the

4. If you selected ‘Picture Mode’ or ‘Format’ in step 3, press the

B button to return to the ‘PICTURE CONTROL’ menu.

store the new setting.

8. Repeat steps 3-7 to adjust the other items.

6. As soon as you have adjusted the item, press the OK button to

9. Press the MENU button to remove the menu from the TV

7. If you selected ‘Picture Mode’ or ‘Format’ in step 3, press the

Additional TV Features

Re-arranging the TV channels

After tuning the TV, you can use this feature to change the channel order.

button to enter the

buttons to select the symbol on the

the menu on the TV screen.

1. Press the MENU button on the remote control to display

2. Press the

menu screen then press the

‘PRESET’ menu.

button to select ‘Programme Sorting’ then

3. Press the

button to enter the ‘PROGRAMME

SORTING’ menu.

press the

buttons to select the channel you want

4. Press the

to move then press the OK button to confirm.

buttons to select the new programme

position (eg PROG 4) for your selected channel then

5. Press the

press the OK button to confirm. The selected channel

now moves to its new programme position.

6. Repeat steps 4 and 5 if you wish to sort other c hannels.

screen.

7. Press the MENU button to remove the menu from the TV

b button to

Additional TV Features

Setting up Dolby Pro Logic

Before listening to Dolby Pro Logic encoded programmes, you can adapt the Dolby features to suit your own taste. Normally this

is only required when you install the TV and the speakers, or when changing the speaker positions.

b button to enter the

b or B buttons to select ‘On’,

b button to confirm. The tone remains at the left

the menu on the TV screen.

1. Press the MENU button on the remote control to display

menu screen then press the

‘PRESET’ menu.

2. Press the V or v buttons to select the symbol on the

Setup’ on the menu screen then press the

enter the ‘DOLBY PRO LOGIC SETUP’ menu.

3. Press the V or v buttons to select ‘Dolby Pro Logic

4. Press the V or v buttons to select ‘Mode’, then press the

b button to enter. Press the b or B buttons to select one

of the following modes then press the OK button to store

the chosen mode:

Dolby Pro Logic: all 5 speakers are activated

b button to enter. Press the b or B buttons to select one

Dolby 3 stereo: surround speakers are not used

of the following modes then press the OK button to store

the chosen mode:

Normal: all 5 speakers are activated

Wide: wider bandwidth for centre speaker

5. Press the v button to select ‘Centre Mode’, then push the

Phantom: centre speaker is not used

then press the OK button.

The test tone will cycle through all the speakers.

button to enter. Press the

6. Press the v button to select ‘Test Tone’ then push the b

speaker.

the

7. Press the v button to select the ‘Left Speaker’, then press

‘Right’, and ‘Surround’ speakers, so that the sound output

from all speakers are balanced in relation to your sitting

position.

press the OK button.

8. Press the b or B buttons to alter the sound level, then

9. Repeat steps 7 and 8 to select and adjust the ‘Centre’,

TV screen.

10.Press the MENU button to remove the display from the

button

button to confirm.

buttons on the remote control to select

buttons to select the item on the screen

the menu on the TV screen.

the symbol on the menu screen then press the

you wish to adjust then press the

For a description of the menu items and their effects, see

2. Press the

to enter the ‘SOUND CONTROL’ menu.

3. Press the

1. Press the MENU button on the remote control to display

Adjusting the sound

Additional TV Features

Although the sound is adjusted at the factory, you can modify it to suit your own taste.

button to confirm.

buttons to adjust your selected item.

buttons to select the item on the screen

you wish to adjust then press the

the table below.

press the

4. If you select ‘Sound Mode’ or ‘Surround Mode’ in step 3,

5. Press the

button to return to the ‘SOUND

button to store the new setting.

step 3, press the

6. As soon as you have adjusted the item, press the OK

CONTROL’ menu.

7. If you selected ‘Sound Mode’ or ‘Surround Mode’ in

8. Repeat steps 3-7 to adjust the other items.

9. Press the MENU button to remove the menu from the TV

screen.

Jazz

Rock

B Pop

In ‘Personal’ mode, Treble an d Bass can be adjus ted

Only available when ‘Surround Mode’ is set to ‘Off’

Sound Mode b Personal

Balance

Reset Resets sound to factory preset levels

Pro Logic--> Pseudo Stereo--> Spatial--> off

Bass Extension Boosts bass by a fixed amount

Surround Mode Choose from the special sound effects:

(for a bilingual broadcast)

A for channel 1 B b B for channel 2

Dual Sound Stereo BbMono (for a stereo broadcast)

adjusted over a range of -12 to +12.

Volume Offset B The channel volume level can be b

Headphones

i Volume

i Dual Sound Stereo B b Mono (for a stereo broadcast)

(for a bilingual broadcast)

A for channel 1 B b B for channel 2

Surround sound when transmitted.

Auto Surround Set to ‘On’ to automatically select Pro Logic

Choosing a language for the TV menu screens

Additional TV Features

button to enter the

buttons to select the symbol on the

the menu on the TV screen.

1. Press the MENU button on the remote control to display

The TV consists of a menu system which can appear on screen in a variety of languages. Use the following feature to select the

language that best suits you.

2. Press the

menu screen then press the

‘PRESET’ menu.

buttons to select ‘Language’ on the

3. Press the

button to enter the

menu screen then press the

‘LANGUAGE’ menu.

buttons to select your chosen language.

4. Press the

TV screen.

5. Press the OK button to confirm your selection.

6. Press the MENU button to remove the display from the

Wide 0On

4:3

FORMAT

Format

Scroll

Auto 16:9

Smart

rmat

Wide

Zoom

14:9

button to

buttons to select ‘Scroll’. You can use

Press the

buttons to

buttons to select ‘On’ if you

buttons to select ‘Auto 16:9’ then press the

adjust the value over a range of -5 to +5. Press the OK button

Press the

to store.

wish the TV set to switch automatically to Wide format if a

button to enter. Press the

6. Auto 16:9

‘Scroll’ to move the screen up or downwards in order to see

the cut-off parts (eg to read subtitles). Press the

highlight the present value then press the

16:9 broadcast is detected or ‘Off’ to retain the format selected

in step 4. Press the OK button to store.

7. Press the MENU button to remove the menu from the TV

screen.

Note: You can change the picture format quickly without having

to enter the menu system. Simply press the button repeatedly

until the picture is displayed in the format you desire.

button to

buttons repeatedly to select

button to enter the ‘FORMAT’ menu.

buttons on the remote control to select the

menu on the TV screen.

1. Press the MENU button on the remote control to display the

2. Press the

Changing the screen mode

Additional TV Features

Using this Screen Mode feature you can change the aspect ratio of the screen.

symbol on the menu screen then press the

buttons to select ‘Format’ on the menu

enter the ‘PICTURE CONTROL’ menu.

screen then press the

3. Press the

buttons to select ‘Format’ then press the

Press the

one of the following modes then press the OK button to store

the chosen mode:

broadcasts

broadcast in cinemascopic format

button to enter. Press the

4. Format

• Smart - imitation of wide screen effect (16:9) for 4:3

• Wide - for 16:9 broadcasts

conventional 14:9 picture

• Zoom - imitation of wide screen effect (16:9) for movies

• 14:9 - compromise between 4:3 and 16:9 format - for

5. Scroll (Applies to Zoom, 14:9 or Smart format only)

• 4:3 - conventional 4:3 picture

TELETEXT

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

153

101

TELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXT

Index

Programme

News

Sport

Weather

1. When viewing channels, press a number button on the

Teletext

Additional TV Features

Teletext is an information service transmitted by most TV stations.

. . . . . . . . .

Wide

Personal

Picture Mode

Contrast

Reset

FormatFormat

PICTURE CONTROL

. . . . . . . . .

Wide

Personal

Picture Mode

Contrast

Reset

FormatFormat

PICTURE CONTROL

2. Press the button on the remote control to switch on

button to enter the PRESET

Switching Teletext on and off

teletext.

3. Input the three digits of the page number you require

using the numbered buttons on the re mote control. If you

button to enter

make a mistake, type in any three digits to complete the

number then re-enter the correct page number.

4. Press the button to switch off teletext.

Note: Teletext errors may occur if the broadcasting

Using Other Teletext Functions

To superimpose Teletext on to the TV

Press the button on the remote control once in teletext

mode or twice in TV mode to superimpose teletext on to the

TV screen. Press the button once more to cancel.

To move to the next or preceding page

Press the or buttons to select the previous or next

page.

To freeze a Teletext page

Press the button to freeze the page. Press again to cancel

the freeze.

Revealing concealed information (eg:answers to a

quiz).

Press the button to reveal information. Press again to

conceal the information.

Using colour buttons to access pages (Fastext)

(only available if the TV station broadcasts Fastext signals)

When the colour coded menu appears at the bottom of a page,

press the colour button (green, red, yellow or blue) on the

control to access the corresponding page.

buttons on the

remote control to select the channel which carries the

signals are weak.

teletext service you wish to receive.

Additional TV Features

Manually tuning the TV

You have already tuned the TV automatically using the instructions at the start of this manual. You can however carry out this

operation manually, adding channels to the TV, one at a time.

buttons to select the symbol on the

the menu on the TV screen.

1. Press the MENU button on the remote control to display

TV screen then press the

2. Press the

buttons to select ‘Manual Programme

menu.

Preset’ on the menu screen then press the

the ‘MANUAL PROGRAMME PRESET’ menu.

3. Press the

buttons to select a programme number for

4. Press the

your channel (eg PROGR 1 for BBC1) then press the

button to enter.

buttons to select the TV broadcast system

5. Press the

or a video input source (AV1, AV2 ...) then press the

button to confirm.

buttons to search for the next available

second number digit of ‘CHAN’ with the number buttons

on the remote controlorPress the

6. Select the first number digit of ‘CHAN’ (channel) then the

channel.

number you selected, press the

7. If you do not wish to store this channel on the programme

button.

press the MENU button to remove the menu from the TV

remote control to continue searching for the desired

channel.

8. If this is the channel you wish to store, press the OK

screen.

9. Repeat steps 4-8 if you wish to store more channels, then

button on the remote control.

using the button on the front of the TV.

Adjustment display. Adjust the brightness, picture and colour

balance levels.

the factory settings.

the RGB symbol is displayed on the screen.

remote control.

display and adjust the colour setting.

the factory settings.

• If is displayed on the screen, press the button on the

• From the Picture Adjustment display select Res et to return to

• Turn off any equipment connected to the scart connectors on

• Press the button on the front of the TV.

the rear of the TV.

• If the indicator is on press the button or a numbered

• Check the aerial connection.

• Turn the TV off for 3 or 4 seconds and then turn it on again

• Using the MENU system, select the Picture

• From the Picture Adjustment display select Res et to return to

• Press the button repeatedly on the remote control until

• Press the button on the remote control.

• Contact your nearest Sony service centre.

not pressed in.

• Check that the button marked on the rear of the TV is

Troubleshooting

Additional Information

Problem Solution

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

No picture (screen is dark), no sound • Plug the TV in.

Poor or no picture (screen is dark), b ut

good sound.

Poor picture quality when watching

an RGB video source.

Good picture, no sound

No colour on colour programmes • Using the MENU system, select the Picture Adjustment

Distorted picture when changing

programmes or selecting T elet ext

Remote control does not function • Replace the batteries.

The standby indicator on the TV

flashes

No Sound

• If you continue to have these problems, have your TV serviced by qualified personnel.

• NEVER open the casing yourself.

Specifications

Additional Information

TV systemIColour system

Audio outputs - phono jacks

Video input -phono jacks

Audio inputs - phono jacks

S video input - 4 pin DIN

21-pin Euro connector (CENELEC standard) including audio/video

input, RGB input, TV audio/video output.

input, S-video input, Monitor audio/video output.

/ 21-pin Euro connector (CENELEC standard) including audio/video

PAL

NTSC 3.58, 4.43 (only Video In)

Channel coverage

UHF:B21-B69

Picture tube

FD Trinitron WIDE

Approx 71cm (28inches) (Approx 66cm picture measured diagonally), 102° deflection

Rear Terminals

Headphones jack - minijack stereo

Front Terminals

Sound output

Left/Right: 2x20W (music power)

Sub woofer: 20W (music power)

Centre 1x10W (music power)

Surround 2x5W (music power)

Power consumption

123W

Dimensions (wxhxd)

Approx. 761x496x525mm

Weight

Approx. 44.0kg

Accessories supplied

RM-887 remote control (1)

IEC designated size AA battery (2)

Centre speaker (1)

Surround speaker (2)

Other features

Teletext, Smartlink

Design and specifications are subject to change without notice.

1 Clip bracket into Beznet

SECTION 2

DISASSEMBLY

2-2. CHASSIS ASSY REMOVAL

2 8 Screws

(BTVTP 4x16)

1 1 Screw (BTVP 4x16)

3 Rear Cover

2-3-2. SERVICE POSITION (2) 2-3-1. SERVICE POSITION (1)

2 Insert into heatsink

2-1. REAR COVER REMOVAL

1 Snap off from main bracket

A Board

1 Remove CN301 before removing A board

2-5. A BOARD REMOVAL

A board

2-6. A EXTENSION BOARD

BE-3E Extension Board

2-4. WIRE DRESSING

• REMOVAL OF ANODE-CAP

Note : Short circuit the anode of the picture tub e and the anode cap to the metal chassis, CRT

* REMOVING PROCEDURES.

shield or carbon paint on the CRT, after removing the anode.

Anode button

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

2 Using a thumb pull up the rubber cap

firmly in the direction indicated by the

arrow b

anode connector.

Do not turn the rubber foot over excessively this may cau s e da mage if the shatter

hook sticks out.

Turn up one side of the rubber cap in

the direction indicated by the arrow a

• HOW TO HANDLE THE ANODE-CAP

1 To prevent damaging the surface of the ano de-cap do not use sharp materi al s.

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

3 A met al fitting called a shatter hook t erm inal is fitted inside the rubber cap.

2 Chassis assy

10 Four PT screws

Cushion

8 Degaussing coils

7 DGC holders

3 C board

5 Neck assy

4 VM Board

9 Spring Extension

6 Deflection yoke

Anode cap

11 Picture tube

2-7. PICTURE TUBE REMOVAL

Fig 4

AFTER CUTTING AWAY FOR THE SAFETY REASON.

THIS PLATE MUST BE REMOVED

For safety reasons, on no account should the plates be

removed and not refitted after servicing.

(2) REFITTING THE PLATES

chassis. See Fig 2.

other.

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

their original location.

The plates are identified by numerical markings on their top side e.g. 1,2

1. Identify the plate by locating its marking.

2. Rotate the plate through 18 0 ’ (do not flip over).

3. Locate the corresponding numerical markings indicated on the main

4. Refit the plate as indicated in Fig 3 with the markings located next to each

REFITTING REFITTING

FOR SAFETY REASONS AFTER CUTTING AWAY

(TURN 180' NOT FLIP OVER)

ATTENTIONATTENTION

THIS PLATE MUST BE REMOVED

NUMERICAL MARKINGS

Fig 2

In the event of the plates requiring to be removed

at a later stage, this can be achieved by inserting a

screwdriver in the snap-recess indicated as in Fig 4

and lifting out.

REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET

BOTTOM PLATES.

(1) REMOVING THE PLATES

FOR SAFETY REASONS

AFTER CUTTING AWAY

(TURN 180' NOT FLIP OVER)

THIS PLATE MUST BE REMOVED

ATTENTIONATTENTION

MAIN BRACKET

FIG 3

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

In the event of servicing being required to the solder side of the D Board printed

wiring board, 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 arrows.

Note :There are 4 plates fitted to the main br acket and secured by 6 gates.

Cut points

Fig 1

INSERT FROM

THE BOTTOM

SIDE

SECTION 3

SET-UP ADJUSTMENTS

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

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

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

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

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

3-1.BEAM LANDING

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 set’s power and degauss with the degausser.

(1) Adjustment of Correction Magnet for Y-Splitting

Axis

1. Input a crossha tch signal from the pattern generator.

2. Set the Pictur e 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. Move the deflection yoke as far forward as is possible.

5. Adjust the up per and lower pin symmetricall y by opening or closing the Y-splitting axis correction magnets located on the neck assembly.

6. Return the deflection yoke to its original position.

Carry out the following adjustments in this order:

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

Note: Test equipment required

1. Color bar/pattern gener a tor.

2. Degausser.

3. Digital multimeter.

4. Oscilloscope.

(2) Landing

Note :Before carrying out the following adjustments

adjust the magnets as indicated below [See Fig.3-3].

1. Input an all-white signal from the pattern generator. Maximize the picture setting and adjust the Brightness setting.

2. Rough-adjust the foc us and horizontal convergence.

3. Loosen the deflection yoke screws and alig n the purity adjustment knob to its central position. [See Fig.3 -1].

4. Switch from the all-white pattern to an all-green pattern.

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

6. Move the deflection yoke forward and adjust so that the entire screen becomes green.

7. Switch the raster signal to red, then to blue and verify the landing condition.

8. When the position of the d efl ect ion yo ke has be en d eter mined, fasten the deflection yoke with the screw.

9. If the beam does not land correctly in all the corners of the screen, use magnets to correct it. [See Fig.3-5].

Y-splitting axis correction magnet

Caution :

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

Purity

Fig.3-1

Deflection yoke

Align the bottom edge of the neck assy with the G3 hole centre.

Fig.3-3

Align Pips on each

magnet

Neck a s sy

Fig.3-2

Purity control corrects this area.

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

Deflection yoke positioning corrects these areas

Center dot

GREEN

BLUE

RED

Fig.3-4

H.STAT

convergence

V.STAT

vertical static magnet

control

H.STAT VR on

mount side

H.STAT convergence

• If the horizon tal dots are unable to coincide with the variable range of the H.STAT convergence, adjust together with the V.STAT convergence while tracking. [Adjust the convergence by tilting the V.STAT convergence or by opening and closin g the V.STAT convergence.]

(Open)

(Close)

4. Movement of the red, green and blue dots by tilting the V.STAT magnet and by opening or closing the V.STAT magnet.

Fig. 3-5

3-2.CONVERGENCE

(1) Screen centre convergence

[Static convergence]

1. Input a dot signal from the pattern generator. Normalize the picture setting.

2. [Moving horizontally], adjust the H.STAT control so that the horizontal red, green and blue dots coincide at the centre of the screen.

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

a). By opening or closing the V.STAT magnet, the red, green and

blue dots move as indicated below.

B G

b). By rotating the V.STAT magnet counter clockwise, the red,

green and blue dots move as indicated below .

c). By rotating the V.STAT magnet clockwis e, the red, green and

blue dots move in the direction indicated below.

HAMP

d). By opening or closing the V.STAT magnet, the red, green and

blue dots move in the direction indicated below.

Note : If the blue dot does not coincide with the red and

green points correct the points by using the BMC [Hexapole] magnet.

5. Correction for HMC [horizontal mis-convergence] and VMC [vertical mis-convergence] by using the BMC [Hexapole] magnet.

a). HMC cor rection by BMC [Hexapole] ma gnet and movement

of the electron beam.

HMC correction(A) HMC correction(B)

A < B

RG B

A > B

RGB

6. HTIL correction can be performed by adding a THL correction ASSY to the DY.

TLH correction Assy

4-057-714-01

HTIL

A = B

RG B

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

of the electron beam.

VMC correction(A) VMC correction(B)

C < D

C D

C = D C > D C = D

R G

G B

A = B

R G

RG B

3-3.SCREEN (G2)

Y-splitting axis correction magnet

V STAT convergence magnet

BMC (Hexaploe) magnet

Purity magnet

LAYOUT OF EACH CONTROL SCREEN G2 ADJUSTMENT

1. Input a dot signal from the pattern generator.

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

3. Apply 175V DC from an external power supply to the R, G and B cathodes of the CRT.

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

3-4.FOCUS

1. Receive a television broadcast signal.

2. Normalise the picture setting.

3 Adjust the focus control located on the FBT [flyback

transformer] to obtain the best focus at the centre of the screen. Bring only the centre area of the screen into focus, the magenta-ring appears on the screen. In this case, adjust the

Fig 3-6

Note : If you are unable to adjust t he corner convergence

properly, this can be corrected with the use of permalloys.

focus to optimize the screen uniformly.

Permalloy Assy X-4387-214-1

a-d: screen-corner convergence defect

FOCUS

SCREEN (G2)

Convergence adjustment with permalloy.

3-5. WHITE BALANCE

WHITE BALANCE ADJUSTMENT

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

2. Enter into the Service Mode.

3. Enter into the ‘Picture Adjustment’ service menu.

4. Select ‘Sub contrast’ and adjust to 7.

5. Select the ‘Green drive’ and adjust so that the white balance becomes optimum.

6. Select the ‘Blue drive’ and adjust so that the white balance becomes optimum.

7. Press the ‘TV’ button on the remote commander to return to TV operation.

PICTURE ADJUSTMENT

AFC mode 1 REF position 2 SCP BGR 1 SCP BGF 1 Trap fo 0 Sub contrast Adj Sub colour Adj Sub brightness Adj Sub hue Adj Green drive Adj Blue drive Adj Green cutoff Adj Blue cutoff Adj Gamma 0 Pre / overshoot 3 Y delay 3

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