Sony KV-28DX30U, KV-32DX30U Service Manual

SERVICE MANUAL

BE-3E

CHASSIS

MODEL

KV-28DX30U

COMMANDER DEST CHASSIS NO.

RM-888 UK SCC-Q25H-A

MODEL

KV-32DX30U

COMMANDER DEST CHASSIS NO.

RM-888 UK SCC-Q25J-A

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

AutomaticallyT uning the TV .................... 9

Finding your video channel .................... 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

ManuallyTuning the TV .................... 12

Vie wing Standard T elete xt .................... 13

Vi ewing Digital T elete xt .................... 13

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

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

2. DISASSEMBLY

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

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

2-3. N Board Removal .................... 15

2-4. Service Position .................... 16

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

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

2-7. Side Control Removal .................... 17

2-8. F4 Bracket Removal .................... 17

2-9. F4 and H8 Board Removal .................... 17

2-10. Picture Tube Remov al .................... 18

Bottom Plates .................... 19

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .................... 20

3-2. Convergence .................... 21

3-3. Focus, Screen [G2] Adjustment.................... 23

3-4. White Balance .................... 23

4. CIRCUIT ADJUSTMENTS

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

4-2. TT Test Mode .................... 27

4-3. T Test Mode .................... 28

5. DIAGRAMS

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

Block Diagram (2) .................... 33

Block Diagram (3) .................... 37

Block Diagram (4) .................... 41

5-2. Circuit Board Location .................... 44

5-3. Schematic Diagrams and

Printed Wiring Boards .................... 44

* C Board .................... 45

* D Board .................... 49

* D2 Board .................... 52

* VM Board .................... 54

* H Board .................... 56

* A Board .................... 59

* A2 Board .................... 65

* J Board .................... 70

* D1 Board .................... 71

* H7 Board .................... 74

* F4 Board .................... 76

* H8 Board .................... 76

* N Board .................... 77

5-4. Semiconductors .................... 90

5-5. IC Blocks .................... 93

6. EXPLODED VIEWS

6-1. Chassis .................... 95

6-2. Picture Tube .................... 96

7. ELECTRICAL PARTS LIST .................... 97

ATTENTION

CAUTION

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

WARNING !!

AN ISOLATION TRANSFORMER MUST 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.

APRES AVOIR DECONNECTE LE CAP DE’LANODE, COURT-CIRCUITER L’ANODE DU TUBE CATHODIQUE ET CELUI DE L’ANODE DU CAP AU COUCHE DE CARBONE PEINTE SUR LE 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

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 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.

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 3 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 (gre en) 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 Front Connection Panel

- +

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S-Video

socket

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BE-3E SELF DIAGNOSTIC SOFTWARE

The errors indicated below can be read using an Error Reader Display (Part Number S-188-900-10) connected to the service connector . Once an error has been detected it will then be displayed on the two digit error reader. During the power up procedure and during norma l run time, the micro’s self diagnostic procedures monitor for various errors. Errors displayed refer to the table indicated below .

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Protection Error

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 diagnosed. The protection pin is not checked during the first 3 - 4 seconds after AC on.

If this error is diagnosed, the r espective NVM r egister will be updated and the set goes straight into diagnostic standby with 2 flashes - no r eset 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 check ed during the first 20 seconds after AC switch on.

If this error is diagnosed, the r espective NVM r e gister will be updated and the r esponse 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

0 102030405060708090100

IKR

Return

A B C D E F

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 (Error 6-18, 27, 29-32)

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If any of these errors ar e detected, the r espective NVM r e gister will be incr emented. The softwar e will then carry on with the power up sequence.

General IIC Device Run-time Errors (Errors 19-23)

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If any of these errors ar e detected, the r espective NVM r e gister will be incremented and the software will carry on.

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

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In the case of these errors, the ‘device reset’ pin will be held low for 60ms, causing a hardwar e reset of Compact Text. Following this reset, a longe r timeout will be allowed for the M3L bus to recover. If the error still exists, the NVM re gister will be incremented and the software will carry on.

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In the case, the ‘device reset’ pin will be held low for 60ms, causing a har dwar e reset of Compact Text. Compact Text will then be re-initialised and the NVM counter updated. This is the same as for errors 26, 28 and 33 except tha t the M3L b us timeout is not changed.

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

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

Error Display Mode

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

Standby -> Information -> 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

22190 3--200 4--210 50220 60230 70240 80254 90265 10 0 27 89 11 0 28 3 12 0 29 0 13 0 30 0 14 0 31 0 15 3 32 0 16 0 33 3 17 0 34 38 18 6

Whilst in this mode, 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

BBC TWO

Yes

Confirm: OK

Do you want to start

automatic tuning?

buttons on

buttons to select

Confirm: OK

Please confirm that

antenna is connected

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.

The digital channels will be stored on programme

to read the TV menu screens. Press the

press the OK button to confirm your selection.

screen enabling you to select in which language you wish

the remote control to select your chosen language then

‘LANGUAGE’ menu appears automatically on the TV

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

your selected language. Press the

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

‘YES’ then press the OK button to confirm.

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

2 345 6

6. Automatically tuning the TV

Getting Started

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

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

8 7

numbers 1-90 and the analogue channels on programme

the OK button to confirm. The TV starts to automatically

patient and do not press any buttons.

numbers 91-99.

search and store all available channels for you. Please be

Note: If any digital channels are stored on programme

analogue channels.

numbers 91-99 during the Automatic Tuning pro cedure,

TV’ on page 19 of this manual to tune in and store the

then no analogue channels will be allocated. If this

happens, please refer to the section ‘Manually tuning the

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

channels, the ‘PROGRAMME SORTING’ menu appears

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

buttons on your remote control to select the channel you

4. When the TV has finished tuning in all available

PROGR

RM-888

sort the order of other channels on your TV.

programme position. Repeat this procedure if you wish to

confirm. The selected channel now moves to its new

your selected channel then press the OK button to

buttons to select the new programme number position for

screen.

remote control to view the TV channels.

5. Press the MENU button to remov e the me nu from the T V

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

7. Finding your video channel after tuning

If you have connected a VCR to your TV, you now need to find the video channel.

instruction manual.

Note: If you wish to move your video channel to a different programme position, refer to the ‘Re-arranging the TV channels’ section in this

1. Press the PROGR +/- buttons on the remote control until the video picture appears on the TV screen.

To temporarily switch off TV

Press to temporarily switch off TV. Press again to

switch on from standby mode. To save energy, we

recommend switching off completely when the TV is

automatically into standby mode.

To select input signal or freeze teletext

without any button being pressed, the TV switches

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

not in use.

cancel.

Optional Equipment section). In teletext mode, press

To return to previous channel

Press to select inputs from the TV sockets (see Using

Press to return to the previous channel you were

to freeze the displayed page. Press once again to

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

Press to use the TV menu system. Press again to

To display the menu

the previous channel for at least 5 seconds.

remove the menu from the TV screen.

To select menu items

options available when in the menu system of this TV.

display the channel listing table.

To change screen format

Use these buttons and the OK button to select the

Press to change the size of the screen.

Pressing the OK button in normal TV mode will

See Teletext section of manual for details.

To select channels

Press to select channels.

PROGR

RM-888

Overview

Overview of the remote control buttons

To mute sound

Guide. Press again to remove display.

Press to switch on Teletext.

Press to display the Electronic Programme

To select Teletext

To display picture menu

Press to change the picture settings. Press

number of your choice.

To select EPG

Press to mute TV sound. Press again to

restore the sound.

answers to a quiz) then press again to

cancel.

Press the numbered buttons to select

To reveal on screen information

Press to reveal all on-screen indications.

To select channels

press to reveal concealed information (e.g.

Press again to cancel. In teletext mode,

-/-- button again to enter the pr ogramme

e.g.23, press -/-- first, the n t he buttons 2 and

3. If you enter an incorrect first digit, select

channels.

For double digit programme numbers,

To display sound menu

the OK button to remove the display.

Press to change the sound settings. Press the

To adjust TV volume

OK button to remove the display.

Press to adjust the volume of the TV.

Personal

Movie

Live

b button to

b button to confirm. For a

Movie (for films)

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

enter the ‘PICTURE C ONTROL’ menu.

menu on the TV screen.

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

2. Press the

Adjusting the picture

Additional TV Features

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

wish to adjust then press the

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

below.

3. Press the

b or B buttons to adjust your selected item.

store the new setting.

adjust then press the

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

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.

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

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

B Live (for live broadc ast s )

Brightness*

Colour*

Sharpness*

Hue**

screen.

Picture Mode Picture Modeb Personal (for individua l settings)

PROGR

Contrast

RM-888

Scroll

Auto 16:9 b Off B On

that gives you the picture quality you prefer

Format Forma t (refer to page 14 for details)

Reset Resets picture to factory preset levels

Digital Signal Set to Co m p osite or RGB. Choose the op tion

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

** Available for NTSC colour system only.

Changing picture and sound modes quickly

CONTROL’ menu screens.

without entering the ‘PICTURE CONTROL’ or the ‘SOUND

You can quickly change the Picture Mode or the Sound Mode

V or v buttons to select the desired mode.

or the symbol for sound modes.

screen.

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

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

2. Press the

Additional TV Features

Re-arranging the TV channels

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

b button to enter the

b button to enter the ‘PROGRAMME

menu screen then press the

the menu on the TV screen.

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

‘PRESET’ menu.

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

SORTING’ menu.

press the

3. Press the v button to select ‘Programme Sorting’ then

to move then press the OK button to confirm.

4. Press the V or v buttons to select the channel you want

PROGR

5. Press the V or v buttons to select the new programme

RM-888

position (e.g. PROG 4) for your selected channel, then

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 channels.

screen.

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

b button to enter the

b or B buttons to select ‘On’,

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

b button to confirm. The tone remains at the left

b button to enter the

3. Press the V or v buttons to select ‘Dolby Mode Setup’ on

the menu screen then press the

‘DOLBY MODE SETUP’ menu.

press the

select one of the following modes then press the OK

button to store the chosen mode:

Pro Logic: all 5 speakers are activated

Virtual: no external speakers required. Do not select this

3 stereo: surround speakers are not used

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

‘PRESET’ menu.

menu screen then press the

the menu on the TV screen.

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

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

Setting up Dolby Pro Logic

Additional TV Features

Before listening to Dolby Pro Logic encoded programmes, you can adapt the Dolby features to suit your own taste. This is only

Logic mode.

Note: There will be no output available from the headphones or the audio output sockets on the rear of the TV during Dolby Pro

required if you have connected your own external speakers (SS-CR190 or equivalent), and/or if you d ecide to change the speaker

positions.

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

mode if you wish to receive Dolby Pro logic

of the following modes then press the OK button to store

Wide: wider bandwidth for centre speaker

selected if you have chosen “3 stereo” mode in step 4)

the chosen mode:

Normal: all 5 speakers are activated

Phantom: centre speaker is not used (This cannot be

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

then press the OK button.

button to enter. Press the

The test tone will cycle through all the speakers.

speaker.

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

the

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

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

press the OK button.

from all speakers are balanced in relation to your sitting

8. Press the V or v buttons to alter the sound level, then

position.

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

on page 11 and set the Surround Mode to Pro Logic.

10.Press the MENU button to remove the display.

Note: After setting up Dolby ProLogic, refer to the ‘Adjusting the sound’ section

PROGR

RM-888

b button to confirm. For a

b button to enter the ‘SOUND

V or v buttons to select the symbol on the

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

CONTROL’ menu.

menu screen then press the

wish to adjust then press the

menu on the TV screen.

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

2. Press the

Adjusting the sound

Additional TV Features

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

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

3. Press the

b button to confirm.

Jazz

Rock

In ‘Personal’ mode, Treble and Bass can be adjusted

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

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

below.

press the

5. Press the

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

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

to store the new setting.

7. If you selected ‘Sound Mode’ or ‘Surround Mode’in step 3,

B button to return to the ‘SOUND CONTROL’

press the

menu.

screen.

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

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

B Pop

Sound Mode b Personal

PROGR

Balance

Reset Resets sound to factory preset levels

RM-888

Off --> Pro Logic --> 3 Stereo --> Virtual Dolby -->

Bass Extension Boosts bass by a fixe d am ount

Surround Mode Choose from the special sound effects:

(for a bilingual broadcast)

adjusted over a range of -12 to +12.

A for channel 1B b B for channel 2

Pseudo Stereo --> Spatial

Volume Offset B The channel volume level can be b

Dual Sound StereoBbMono (for a stereo broadcast)

(for a bilingual broadcast)

A for channel 1 B b B for channel 2

Surround sound when transmitted.

Headphones

i Volume

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

i Dual Sound Stereo BbMono (for a stereo broad ca st)

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.

b button to enter

b button to enter.

b button to confirm.

V or v buttons on the

b button to enter the PRESET menu.

V or v buttons to search for the next available

digital programmes only), select each digit in turn and press

the menu on the TV screen.

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

screen then press the

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

2 345 6 1

3. Press the V or v buttons to select ‘Manual Programme

FORMAT

Preset’ on the menu screen then press the

Wide 0On

Format

Scroll

the ‘MANUAL PROGRAMME PRESET’ menu.

Auto 16:9

(I for analogue or DIG for digital) or a video input source

number for your channel then press the

4. Press the V or v buttons to select an unused programme

rmat

5. Press the V or v buttons to select the TV broadcast system

PROGR

Smart

second number digit of ‘CHAN’ with the numbered buttons

(AV1, AV2 ...) then press the

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

RM-888

Wide

channel.

on the remote control

Press the

Zoom

the numbered buttons on the remote control to change to

7. If you wish to change the ‘SERV’ service number (on

14:9

remote control to continue searching for the desired

number you selected, press the

your desired service.

channel.

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

4:3

press the MENU button to remove the menu from the TV

screen.

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

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

NOTE: After manually tuning in the channels you require, you

can sort the channels into the order you prefer by following the

procedure ‘Re-arranging the TV channels’ on page 24.

b button to

B or b buttons to

b button to enter the ‘PICTURE

screen then press the

menu on the TV screen.

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

Changing the screen mode

Additional TV Features

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

CONTROL’ menu.

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

b button to enter the ‘FORMAT’ menu.

V or v buttons to select ‘Format’ then press the b

Press the

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

button to enter. Press the

the chosen mode:

screen then press the

3. Press the V or v buttons to select ‘Format’ on the menu

4. Format

broadcasts

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

• Wide - for 16:9 b roadcasts

conventional 14:9 picture

broadcast in cinemascopic format

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

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

PROGR

V or v buttons to select ‘Scroll’. You can use

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

highlight the present value then press the

adjust the screen position over a range of -5 to +5. Press the

Press the

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

• 4:3 - conventional 4:3 picture

RM-888

OK button to store.

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

b or B buttons repeatedly to select

B or b buttons to select ‘On’ if you

V or v buttons to select ‘Auto 16:9’ then press the b

Press the

button to enter. Press the

wish the TV to switch automatically to wide format when a

6. Auto 16:9

screen.

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

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.

V, v,

V, v, B or b buttons to select the symbol then press

the OK button to look for that channel in the channel table.

numbered buttons on your remote control to select the relevant

channel number. If you do not kn ow th e cha nne l num ber, p res s

on-screen to display the teletext information, then press the

v, B or b buttons to guide the on-screen cursor to the required

area of the screen, then press the OK button to display the

chosen information.

on the remote control to directly enter the page nu mber required

and to display the various pages of text information.

‘OK’ or ‘Cancel’, press the OK button for ‘OK’ or the

button for ‘Cancel’.

or the PROG +/- buttons, and then select an alternative digital

Selecting the dedicated digital

1. To view the dedicated digital teletext service, press the

teletext channel

Viewing Digital Teletext

Teletext

Most of the digital TV channels broadcast information via teletext. This digital service includes high quality text and graphics as

well as advanced navigational options. Additionally, this television set has access to a dedicated digital teletext channel.

2. Once the teletext channel is displayed, follow the instructions

2 345 6 1

153

101

3. Alternat ively, you can use the numbered and coloured buttons

4. If when viewing the teletext pages, you are requested to select

8 7

channel.

5. When you have finished viewing teletext, press the button

channels. Sometimes this is indicated by a small symbol or text

Selecting teletext from the other

digital channels

Normal teletext services may also be available on other digital

PROGR

the OK button to display the chosen information.

coloured buttons on your remote control to display the various

pages of text information. If when viewing the teletext pages,

you are requested to select ‘OK’ or ‘Cancel’, press the OK

button for ‘OK’ or the button for ‘Cancel’.

B or b buttons, the coloured buttons and/or the numbered

buttons to access the chosen information.

and then select an alternative digital channel.

4. When you have finished viewing teletext, press the button

RM-888

1. Press the

2. Alternatively, you may be requested to use the numbered and

3. Once the text information is displayed on screen, use the

display on your TV screen, superimposed on the channel you are

watching.

available.

information available and/or the coloured buttons for the

your remote control to display any text service which may be

functions shown on screen.

button to return to normal TV.

On other channels there may be no on-screen symbol, but you can

2. Press the numbered buttons to select the various pages of

see if there is a digital service as follows:

1. When watching a digital TV channel, press the button on

3. When you have fi ni shed using the text service, press the

TELETEXTTELETEXT

Index

Programme

News

Sport

Weather

153

101

TELETEXTTELETEXT

Index

Programme

News

Sport

Weather

the remote control to select the channel which carries the

teletext service you wish to receive.

Selecting Teletext

1. When viewing analogue channels press a numbered button on

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

Viewing standard teletext

Teletext

Teletext is an information service transmitted by most TV stations.

the TV screen.

the button again if you wish to superimpose teletext on to

2 345 6 1

3. Select your required page using the numbered buttons on the

remote control. If you make an error, complete the number, then

re-enter the correct page number.

4. Press the button to switch off teletext.

Using Other Standard Teletext Functions

To move to the next or preceding page

To freeze a Teletext page

Press the or buttons to select the previous or next 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.

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

Using colour buttons to access pages (Fastext)

the colour buttons (red, green, yellow or blue) on the remote control

to access the corresponding page.

Displaying TOP-Text (when available)

With TOP-Text you can access pages easily by selecting blocks or

groups of pages. The block is a category (for example Sports) which

includes the groups (for example Football). When TOP-Text is

broadcast, a colour coded menu appears at the bottom of the screen.

The colours of this menu correspond to the red, green, yellow and

blue buttons on the remote control. Press these coloured buttons to

displayed the desired p ages.

PROGR

RM-888

Red: to go back to the previous page.

Green: to proceed to the next page.

Yellow: to proceed to the first page of the next group.

1. Press the button to display teletext.

Blue: to proceed to the first page of the next block.

2. Press the coloured buttons to search for the page you desire:

3. Press the button twice to return to normal TV.

your aerial at.

•Power off.

•TV in standby.

• Aerial disconnected.

• Picture preset level adjustment.

• No digital transmissions in your area.

• No digital transmissions from the transmitter you are currently using.

• Weak signal.

• Unsuitable aerial.

• Fault (irregular flash).

• Digital mode Timer Record active (regular flash).

• Volume control.

• Programme not being transmitted.

• Programme used only for data (no picture or sound).

• Scrambled/subscription-only channel.

• The button marked on the rear of the TV is pressed in.

• The TV has been set up to receive Dolby Pro Logic.

• Colour level setting.

• Wrong external mode selected on an RGB video source.

• Batteries low.

• Inputs from external equipment not switched off.

remote control.

• Press the button on the front of the TV.

• Plug in the TV.

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

• Tune in the analogue channels available using the ‘Manually tuning the TV’

• Select on the TV menu system then adjust the brightness, picture and colour

• Check the aerial connection.

instruction in this manual, then contact a local installer to find out when digital

balance levels.

a local installer)

transmissions begin in your area.

• Contact a local installer to find out which transmitter you should be pointing

• Upgrade to a higher gain aerial.

• Ensure aerial is correctly aligned to transmitter.

• Ensure aerial is plugged directly int o the TV (not through other equipment).

• See ‘Re-arranging the TV channels’ section.

• Do not open the cabinet, refer to qualified personnel.

• Change your aerial to c o ver the channels used by digital programmes. (Contact

• Contact your nearest Sony Service Centre.

• Subscribe to pay-per-view broadcaster.

• See ‘Skipping programme positions’ section.

screen.

• Press the + button on the remote control.

• If is displ ayed on the screen, press the button on the remote control.

• Press the button repeatedly until the RGB symbol is displayed on

• Select on the TV menu system then adjust the colour setting.

Additional Information

Troubleshooting

Problem Cause

No picture, no sound.

Poor or no picture (screen is dark), but good sound.

No picture on any channel after digital tuning.

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

Some channels are blank.

Good Picture, no sound.

Standby indicator flashing.

No head phone output and no outp ut f rom th e audio

sockets marked on the rear of the TV.

Poor picture quality.

No colour on colour programmes.

Remote control does not function.

Distorted picture when changing programmes or

selecting Teletext.

Cause • Solution

TV in standby.

Aerial disconnected.

Power off.

Picture level adjustment.

are currently using.

Unsuitable aerial.

Weak signal.

No digital transmissions in your area.

No digital transmissions from the transmitter you

Scrambled/subscription-only channel.

Programme information without picture or sound.

Fault.

Volume control.

Wrong external mode selected.

you can contact the Sony UK Digital HelpLine on 0870 600 1717.

Colour level setting.

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

• NEVER open the casing yourself.

Additional Information

Specifications

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

Audio outputs - phono jacks

Video input -phono jack

Audio inputs - phono jacks

S video input - 4 pin DIN

Front Terminals

Headphones jack - minijack st ereo

Sound output

Left/Right: 2x20W (music power)

KV-28DX30U: 136W

Power consumption

KV-32DX30U: 134W

KV-28DX30U: Approx. 796x518x522mm

KV-32DX30U: Approx. 883x567x562mm

Weight

Dimensions (wxhxd)

KV-28DX30U: Approx. 44kg

KV-32DX30U: Approx. 62kg

RM-888 remote control (1)

Accessories supplied

Other features

IEC designated size AA battery (2)

Design and specifications are subject to change without notice.

Teletext

Dolby ProLogic Surround System

Smartlink

21-pin Euro connector (CENELEC standard) inclu di ng audio/video

input, RGB input, TV audio/video output.

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

input, selectable audio/video output.

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

UHF:B21-B69

Picture tube

KV-28DX30U

Channel coverage

Colour system

PAL

NTSC 3.58, 4.43 (only Video in)

I/DVB-T

TV system

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

FD Trinitron WIDE

KV-32DX30U

Approx. 82cm (32 inches) (Approx. 76cm pi ct ure measured diagonally), 102° de fl ec ti on

FD Trinitron WIDE

Rear Terminals

MODEM Modem connection

SECTION 2 DISASSEMBLY

2-1. Rear Cover Removal

Remove the rear cover f ixing 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 .

2-3. N Board Removal

Shield Case

Clip

T o remov e the N Board f irst pull the shield case sho wn vertically . The clip circled can then be released and the board gently removed.

2-2. Chassis Removal and Refitting

T o 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.

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.

2-4. Service Position

Position the chassis as indicated to access the solder side. T o gain access to the D Board follo w the instructions on page 19. [Remov al and Replacement of the main bracket bottom plates ].

2-5. A Board Removal

T o remove the A Board release the clip circled and gently remove the board in a vertical direction.

2-6. A Extension Board

A board

BE-3E Extension Board

T o gain test access to the A Board remov e the board and plug in the extension board. The A board can then be plugged into the extension board to allow testing.

2-7. Side Control Module 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 H7 Board.

Screws

2-8. F4 Bracket Removal

Release the clip circled and pull the bracket towards the rear of the set. The bracket can then be removed to allow access to the boards.

Clip

2-9. F4 and H8 Board Removal

T o remove the F4 and H8 Boards release the clips circled and ease the boards gently away from the support bracket.

Clips

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 CR T and remove the anode cap.

2. Unplug all interconnecting leads from the Deflection yoke, neck assy, de gaussing coils and CRT grounding strap.

3. Remove the C Board from the CR T.

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 f ace down on a cushion and remov e the Degaussing Coil holders.

8. Remove the Degaussing Coils.

9. Remove the CR T grounding strap and spring tentioners.

10. Unscrew the four CRT fixing screws [ located on each CR T corner ] and remove the CR T . [T ake care not to handle the CR T by the neck.]

Removal of the Anode-Cap

* 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

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.

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

other

Fig 4

AFTER CUTTING AWAY FOR THE SAFETY REASON.

THIS PLATE MUST BE REMOVED

Catch

FOR SAFETY REASONS AFTER CUTTING AWAY

(TURN 180' NOT FLIP OVER)

THIS PLATE MUST BE REMOVED

ATTENTIONATTENTION

Tab

NUMERICAL MARKINGS

For safety reasons, on no account should the plates be

removed and not refitted after servicing.

REFITTING REFITTING

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

(2) REFITTING THE PLATES

tabs to be fitted into their catch positions.

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

BOTT OM PLA TES.

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 the

arrows.

(1) REMOVING THE PLATES

Note : There are 4 plates fitted to the main bracket and secured by3 gates.

Cut points

FOR SAFETY REASONS

AFTER CUTTING AWAY

(TURN 180' NOT FLIP OVER)

THIS PLATE MUST BE REMOVED

ATTENTIONATTENTION

Fig 1

MAIN BRACKET

INSERT FROM

THE BOTTOM

FIG 3

SIDE

SECTION 3 SET -UP ADJUSTMENTS

• 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

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 TV set’s power and degauss with a de g ausser.

(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.3-3.

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 cor rection magnets located on the neck assembly. [See Fig 3-1 and Fig 3-2]

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

Fig.3-1

Y-splitting axis correction magnet

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. De gausser .

3. Oscilloscope.

4. Digital multimeter .

Caution :

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

(2) Landing

Note : Before carrying out the following adjustments adjust the

magnets as indicated below [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 for green and blue]

Fig.3-2

Fig.3-3

Neck assy

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

Fig.3-4

Purity magnets

Align pips on each magnet

GREEN

RED

Align both Purity magnets to the vertical position

BLUE

Purity control magnets

3-2. Con vergence

(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.

Center dot

R G B

Fig.3-5

Purity control corrects this area

Deflection yoke positioning corrects these areas

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

H STAT

convergence

control

V.STAT Vertical Static Magnet

C Board

RV701 (H STAT) H STAT Convergence (on mount side)

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

Disk Magnets

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

magnets as this can affect the focus setting.

4. Correction for HMC [Horizontal mis-convergence] and VMC [V ertical mis-con ver gence] by using the BMC [Hexapole] magnet.

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

the electron beam.

HMC correction(A) HMC correction(B)

A > B

A < B

RG B

RGB

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

A = B

RG B

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

G B

R G

HAMP Adjustment

YCH Adjustment

YCH VR

Deflection Yoke

TL V Adjustment

TLV VR

Deflection Yoke

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

HTIL Adjustment

THL Correction assy

H-TRAP Adjustment

HTRAP VR

Deflection Yoke

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

Layout of each control

Purity magnet BMC (Hexaploe) magnet V STAT convergence magnet Y-splitting axis correction magnet

3-3. Focus, Screen (G2) 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.

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

this can be corrected with the use of permalloy magnets.

a-d: screen-corner convergence defect

Install the permalloy assembly for the area that needs correcting.

Permalloy Assy X-4387-214-1

Focus Control

Screen (G2)

G2 adjustment [RV5376]

1. Input a dot signal from the pattern generator.

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

3. Apply 170V 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 R V5376 [SCREEN] located on the C Board to the point just before the flyback return lines disappear .

3-4. White Balance Adjustment

[Adjustment in the service mode using the remote commander]

White balance adjustment for TV mode

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

2. Enter into the ‘Service Mode’ by pressing ‘TEST’, ‘TEST’ and ‘MENU’ on the Service Commander.

3. Select ‘Picture Adjustment’ from the on screen menu display and press the joystick to the right.

4. The ‘Picture Adjustment’ menu will a ppear on the screen. [See Page 24]

5. Select ‘Sub Contrast’ and adjust to 7.

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

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

Convergence adjustment with permalloy

SECTION 4

CIRCUIT ADJUSTMENTS

4-1.ELECTRICAL ADJUSTMENTS

Service adjustments to this model can be performed using the supplied Remote Commander RM-888.

HOW TO ENTER INTO SERVICE MODE

1. Turn on the main power switch and enter into the stand-by mode.

2. Press the following sequence of buttons on the Remote Commander.

(ON SCREEN DISPLAY)

• ‘TT--’ will appear in the upper right corner of the screen. Other status information will also be displayed.

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

(DIGIT 5) (VOLUME +) (TV)

PICTURE ADJUSTMENT

AFC mode 1 REF position 3 SCP BGR 1 SCP BGF 1 Trap fo 9 Sub contrast Adj Sub colour Adj Sub brightness Adj Green drive Adj Blue drive Adj Green cutoff Adj Blue cutoff Adj Gamma 0 Pre / overshoot 0 Y delay 3 D Pic ON/OFF D Colour ON/OFF DC Transfer ON/OFF

TEST MENU

> Picture Adjustment Geometry Wide IC status MSP Dynamic Convergence Current TV status

4. Move to the corresponding adjustment using the button on the remote commander.

5. Press the + button to enter the selected adjustment.

6. Turn off the power to quit the service mode when adjustments have been completed.

GEOMETRY ADJUSTMENT - 4:3

V size Adj V position Adj S Correction Adj V Linearity Adj H size Adj H position Adj Pin Amp Adj Pin Phase Adj AFC Bow Adj AFC Angle Adj EHT V 1 EHT H 0 Lo Corn Pin Adj Up Corn Pin Adj

WIDE ADJUSTME NT - 4:3

V Aspect 0 V Scroll 25 Upper V Lin 0 Lower V Lin 0 Left Blanking 1 Right Blanking 11

IC STATUS (CXA203452 / CXA2040)

Dynamic Convergence

CXA2034526 H lock 1 IKR 1 V NG 0 X-RAY 0 Colour system 7 CV1 sync 0

CXA2040 Sync sep 0 S1 mode pin 01 S2 mode pin 01

PORT EXPANDER Power Good 1

TUNER Tuner status 01101011

TV STATUS BE3E

Text system C TEXT- 2 Dolby Enabled YES DSP Present NO Text language set WEST Menu language set WEST Destination UK Ageing DISABLED Auto Shut Off ENABLED Size 28/32 Colour trap sw ALL Velocity mod ON AFT STATUS Digital RF YES Attenuation OFF

Range Adj Off - 42 H stat Adj Off - 63 H amp l Adj Off - 63 H amp r Adj Off - 63 Up Y Adj Off - 63 Low Y Adj Off - 63 Y up l Adj Off - 63 Y up r Adj Off - 63 Y low l Adj Off - 63 Y low r Adj Off - 63 Mbow up l Adj Off - 63 Mbow up r Adj Off - 63 Mbow low l Adj Off - 63 Mbow low r Adj Off - 63 V Stat Adj Off - 63

SUB BRIGHTNESS ADJUSTMENT

1. Input a Phillips pattern.

2. Set the picture control to minimum.

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

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

SUB CONTRAST ADJUSTMENT

1. Input a video that contains a small 100% area on a black background.

2. Set the picture control to maximum.

3. Connect an oscilloscope to Pin 3 of CN301 [A Board].

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

5. Adjust the ‘Sub-contrast’ data to obtain a black to white amplitude of 2.20V.

SUB COLOUR ADJUSTMENT

1. Receive a PAL colour bar video signal.

2. Connect an oscilloscope to Pin 3 of CN301 [A Board].

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

4. Adjust the ‘Sub-colour’ data so that the Cyan, Magenta and Blue colour bars are of equal height as indicated below.

Same Level

Micro/Jungle SDA30C263/MSP3452

B-Out Wavef orm

Note: The data indicated in the ‘TV STATUS’ table is

dependant on destination, screen size an d country.

I.F ADJUSTMENT

1. Input an off air signal of between 60-100dBuV / 75 ohm terminated, via the tuner socket.

2. Enter into the ‘IF Adjustment’ service mode [i.e ‘TT59’] to f ix the I.F frequency to 39.9MHz.

3. Enter into the service mode and select ‘Current TV status’.

4. Adjust the I.F coil [LV01] until the ‘AFT Status’ indicates a ‘Window’ condition.

STUNER AGC ADJUSTMENT

1. Receive a signal of 63dBuV / 75 ohm terminated, via the tuner socket.

2. Measure the voltage at test point 1 [A Board] .

3. Adjust RV01 control to obtain a voltage of 3.0V +/- 0.3V.

LV01 RV01

TP1

DEFLECTION SYSTEM ADJUSTMENT

1. Enter into the ‘Geometry Adjustment’ service menu.

2. Select and adjust each item in order to obtain the optimum image.

GEOMETRY ADJUSTMENT

V size Adj V position Adj S Correction Adj V Linearity Adj H size Adj H position Adj Pin Amp Adj Pin Phase Adj AFC Bow Adj AFC Angle Adj EHT V 1 EHT H 0 Lo Corn Pin Adj Up Corn Pin Adj

TUNER / IF

V SIZE

V LIN

S CORRECTION

V CENTRE

H SHIFT

H SIZE

PIN AMP

TILT

CORNER PIN

V ANGLE

+ 60 hidden pages