Sony kv28hx15b schematic

SERVICE MANUAL

FE-2

CHASSIS

MODEL

KV-28HX15B KV-28HX15E KV-28HX15U

COMMANDER DEST CHASSIS NO.

RM-947 FR SCC-Q54X-A

RM-947 ESP SCC-Q53Y-A

RM-947 UK SCC-R42A-A

MODEL

KV-32HX15B KV-32HX15E KV-32HX15U

COMMANDER DEST CHASSIS NO.

RM-947 FR SCC-Q54W-A

RM-947 ESP SCC-Q53X-A

RM-947 UK SCC-Q52Y-A

KV-28/32HX15

- 1 -

RM-947

Section Title Pag e Section Title Pag e

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

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

Connectors .................... 5

Self Diagnostic Software .................... 6

1. GENERAL

Switching on the TV and Automatically

Tuning in channels .................... 7

Introducing and Using the menu

system .................... 8

Menu Guide .................... 8

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

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

Connecting Optional Equipment ................... 11

Using Optional Equipment ................... 11

Lifting the TV set ............. 11

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

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

2. DISASSEMBLY

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

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

2-3. A Board Removal [Step 1] .................... 14

2-4. A Board Removal [Step 2] .................... 14

2-5. F3 Board Removal .................... 14

2-6. Service Position .................... 14

2-7. Picture Tube Removal .................... 15

Bottom Plates .................... 16

5. DIAGRAMS

5-1. Block Diagrams (1) .................... 24

Block Diagrams (2) .................... 25

Block Diagrams (3) .................... 26

5-2. Circuit Board Location .................... 27

5-3. Schematic Diagrams and

Printed Wiring Boards .................... 27

* A Board PWB .................... 28

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

* H6 Board PWB .................... 34

* H6 Board Schematic .................... 33

* F5 Board PWB .................... 34

* F5 Board Schematic .................... 33

* F3 Board PWB .................... 34

* F3 Board Schematic .................... 33

* C Board PWB .................... 36

* C Board Schematic .................... 35

* D2 Board PWB .................... 36

* D2 Board Schematic .................... 35

* VM Board PWB .................... 36

* VM Board Schematic .................... 37

5-4. Semiconductors .................... 38

5-5. IC Blocks .................... 40

6. EXPLODED VIEWS

6-1. Chassis .................... 41

6-2. Picture Tube .................... 42

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .................... 17

3-2. Convergence .................... 18

3-3. Focus Adjustment .................... 20

3-4. Screen (G2), White Balance .................... 20

4. CIRCUIT ADJUSTMENTS

4-1. Electrical Adjustments .................... 21

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

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.

7. ELECTRICAL PARTS LIST .................... 43

ATTENTION

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

ATTENTION !!

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

ATTENTION AUX COMPOSANTS RELATIFS Á

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!!

- 2 -

CAUTION

Lead Free Soldered Boards

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

Table 1

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AoiduA,oediV,noitcelfeD,ylppuSrewoP

example 1

example 2

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2DnoitcelfeDedoMtramS

3FsretliFeniL,esuF,egrahcsiDgninthgiL

5FSCRIS,DEL,tupnICA

6HonohPdnaSHVS,enohpdaeH

MVnoitaludoMyticoleV

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

rebmuntraP retemaiD skrameR

91-500-046-7mm3.0gK52.0 02-500-046-7mm4.0gK05.0 12-500-046-7mm5.0gK05.0 22-500-046-7mm6.0gK52.0 32-500-046-7mm8.0gK00.1 42-500-046-7mm0.1gK00.1 52-500-046-7mm2.1gK00.1 62-500-046-7mm6.1gK00.1

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

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

- 3 -

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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 5AMP FUSE approved by ASTA to BS 1362, ie one

ASA

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.

mark.

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 5AMP FUSE at the distribution board.

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

FUSE

- 4 -

21 pin connector

Pin No 1 2 4 Signal Signal level

1 Audio output B

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 input B (right)

Audio output A (left)

(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)

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

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

Rear Connection Panel Front Connection Panel

S-Video

socket

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- 5 -

FE-2 SELF DIAGNOSTIC SOFTWARE

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

Table 1

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devreseR10

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desUtoN30

cnySlacitreVoN40

norewoptarorrERKI50

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desUtoN80

norewoptaegdelwonkcaonrenuT90

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Flash Timing Example : e.g. error number 3

StBy LED

ON ON

norewoptawolsenilatadro/dnakcolcsubCII60

How to enter into Table 2

DEL

edoC

1. Turn on the main power switch of the TV set and enter into the ‘Standby Mode’.

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

(ON SCREEN (DIGIT 5) (VOLUME -) (TV) DISPLAY)

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

Table 2

UNEMRORRE

OFF

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

SRUOH

SETUNIM

PCO

A/NPVO

CNYSV

RKI

CII

MVN

ELGNUJ

RENUT

PDNUOS

AMME

XETROP

CTR

EMITGNIKROW

)552,0(

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

- 6 -

SECTION 1 GENERAL

Yes

automatic tuning?

Do you want to start

select Yes.

The Auto Tuning menu appears on the screen. Press the OK button to

Auto Tuning

System: B/G

Programme: 01

Searching...

Channel: C21

channels for you. This procedure could take some minutes. Please be

patient and do not press any buttons, otherwise the automatic tuning will not

be completed.

The TV starts to automatically search and store all available broadcast

If no channels were found during the auto tuning process then a new menu

Confirm

No channel found

Please connect aerial

appears automatically on the screen asking you to connect the aerial.

Please connect the aerial (see page 7) and press OK. The auto tuning

process will start again.

Programme Sorting

Sorting menu appears automatically on the screen enabling you to change

After all available channels are captioned and stored, the Programme

Programme:

the order in which the channels appear on the screen.

01 TVE

02 TVE2

03 TV3

04 C33

05 C27

06 C58

a) If you wish to keep the broadcast channels in the tuned order, go to step 8.b) If you wish to store the channels in a different order:

Select channel:

Exit:

Programme:

01 TVE

ii) Press the or button to select the new programme number position

02 TVE2

03 TV3

04 C33

05 C27

for your selected channel (TV Broadcast), then press .

06 C58 05 C27

Select new position:

Exit:

iii) Repeat steps b)1 and b)2 if you wish to change the order of the other

channels.

Press the MENU button to remove the menu display from the TV screen.

Your TV is now ready for use.

First Time Operation

Programme Sorting

i) Press the or button to select the programme number with the

channel (TV Broadcast) you wish to rearrange, then press the button.

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.

Switching on the TV and automatically

tuning in channels

The first time you switch on your TV, a sequence of menu screens appear on

the TV enabling you to: 1) choose the language of the menu screen,

2) choose the country in which you wish to operate the T V, 3) adjust the

picture slant, 4) search and store all available channels (TV broadcasts) and

5) change the order in which the channels (TV broadcas ts) appear on the

Adjust now

Not necessary

adjust picture rotation

If picture slants, please

recommend selecting ‘Russia’ if your own country does not appear in

Press the on/off button on the TV set to turn on the TV. The first time

you press this button, a Language menu displays automatically on the TV

screen.

Connect the TV plug to the mains socket (220-240V AC , 50Hz).

screen. However, if you need to change any of these settings at a later date,

you can do that by selecting the appropriate option in the (Set Up m enu)

or by pressing the Auto Start Up Button on the TV set.

then press the OK button to confirm your selection. From now on all the

menus appear in the selected language.

Press the or button on the remote control to select the language,

• If the country in which you want to use the TV set does not appear in

the or button to select the country in which you will operate the TV

set, then press the OK button to confirm your selection.

The Country menu appears automatically on the TV screen. Press

the list.

the list, select “-” instead of a country.

• To avoid wrong teletext characters for cyrillic languages we

press OK.

OK and correct any slant of the picture between –5 and +5 by

a) If it is not necessary, press or to select Not necessary and

Rotation menu allows you to correct the picture slants if it is necessary.

Because of the earth’s magnetism, the picture might slant. The Picture

pressing or . Finally press OK to store.

b) If it is necessary, press or to select Adjust now, then press

First Time Operation

- 7 -

Sound Adjustment

Mode: Personal

Treble

Bass

Balance

Reset

Dual Sound: Mono

Detail Adjustment

Timer

Sleep Timer: Off

SOUND ADJUSTMENT

Picture Adjustment

Mode: Personal

Contrast

Brightness

The “Sound Adjustment” menu allows you to alter the sound s ettings.

Colour

To do this: after selecting the item you want to alter, press , then press / /

Sharpness

Hue

Reset

Sound Adjustment

Mode: Personal

Treble

Bass

Balance

Reset

Dual Sound: Mono

Detail Adjustment

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Timer

Sleep Timer: Off

or to s et the

according to the

effect.

changes

broadcast signal.

channels will stay

the same,

independent

of the broadcast

signal (e.g. in the

amplifier connected to

the audio outputs on

case of

advertisements).

the rear of the TV set.

button on the remote

Spatial: Acoustic sound

Pop

Sound Effect: Off: Normal.

Jazz

Detail Adjust ment

Rock

or repeatedly to adjust it and finally press OK to store t he new adjustment.

This menu also contains two submenus as following:

Mode Personal (for individual settings)

On: Volume level of the

Auto volume: Off: Volume level

On: Sound from the TV set.

TV Speakers: Off: Sound from external

control to display the time remaining.

channel 1, B for sound channel 2 or Mono for mono channel if available. For

• Treble and Bass can only be altered if “P ersonal” mode is selected.

a stereo broadcast you can choose Stereo or Mono.

•Select Reset and press OK to reset the sound to the factory preset levels.

• In case of a bilingual broadcast select Dual Sound and set A for sound

SLEEP TIMER

The “Sleep Timer” option in the “Timer” menu allows you to select a time period

for the TV to switch itself automatically into the standby mode.

To do this: after selecting the option press , then press

time period delay (max. of 4 hours) and finally press OK to store.

• While watching the TV, you can press the

remaining is displayed on the TV screen automatically.

• One minute before the TV switches itself into standby mode, the time

Menu System

Introducing and Using the Menu System

Your TV uses an on-screen menu system to guide you through the

operations. Use the following buttons on the remote control to operate the

menu system:

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Digital Set Top Box receivers).

Movie (for films).

Live (for live broadcast programmes, DVD and

programme you are watching:

• To enter to the selected menu or option, press .

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

TV screen.

Press the MENU button on the remote control to display the menu on the

• To highlight the desired menu or option, press or .

• To confirm and store your selection, press OK.

Press the MENU button to remove the menu from the s creen.

Menu Guide

/ or repeatedly to adjust it and finally press OK to store the new

PICTURE ADJUSTMENT

The “Picture Adjustment” menu allows you to alte r the picture settings.

To do this: after selecting the item you want to alter press , then press /

adjustment.

Mode Personal (for individual settings).

• This menu also allows you to customise the picture mode based on the

• Brightness, Colour and Sharpn ess can only be altered if “Personal”

mode is selected.

• Hue is only available for NTSC colour signal (e.g: USA video tapes).

levels.

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

Menu System

- 8 -

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

4:3

Sharpness

Hue

Reset

Smart

14:9

Zoom

Wide

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Menu System

repeatedly on the

or to adjust the position of the image on the screen

automatically change the aspect ratio of the screen.

AUTO FORMAT

The “Auto Format” option in the “Detail Set Up” menu allows you to

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

To do this: after selecting the option, press . Then press or to select

On (if you wish the TV set to automatically switch the s creen format according

to the broadcast signal) or Off (if you wish to keep y our preference). Finally

press OK to store.

Even if you have selected “On” or “Off” in the “Auto Format” option, you can

always modify the format of the screen by pressing

remote control to select one of the following formats:

Smart: Imitation of wide screen effect for 4:3 broad cast.

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

4:3: Conventional 4:3 picture size, full picture information.

14:9: Compromise between 4:3 an d 16:9 picture size.

Zoom: Widescreen format for letterbox movies.

Wide: For 16:9 broadcast. Full picture information.

(e.g. to rea d subtitles).

Note: In “Smart”, “Zoom” and “14:9” modes, parts of the top and bottom of the

screen are cut off. Press

NOISE REDUCTION

The “Noise Reduction” option in the “Detail Set Up” menu allows you to

automatically reduce the picture noise visible in the broadcast signal.

above.

To do this: after selecting the option, press . Then press or to select

Auto. Finally press OK to confirm and store.

To cancel this function afterwards, select “Off” instead of “Auto” in the step

Sharpness

Hue

Reset

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Menu System

or to select the

language that the menus are displayed in. It also allows you to select the

country in which you wish to operate the TV set.

LANGUAGE / COUNTRY

The “Language/Country” option in the “Set Up” menu allows you to select the

confirm this character. Select the other four characters in the same way.

Finally press OK to store.

or to select a letter or number (select “-“ for a blank), then press to

Automatically Tuning”.

To do this: after selecting the option, press and then proceed in the same

way as in the steps 2 and 3 of the section “Switching On the TV and

search for and store all available TV channels.

To do this: after selecting the option, press and then proceed in the sam e

AUTO TUNING

The “Auto Tuning” option in the “Set Up” menu allows you to automatically

way as in TV steps 5 and 6 of the section “Switching On the TV and

Automatically Tuning” on page 8.

PROGRAMME SORTING

the order in which the channels (TV broadcast) appear on the screen.

The “Programme Sorting” option in the “Set Up” menu allows you to change

To do this: after selecting the option, press and then proceed in the same

way as in step 7b) of the section “Switching On the TV and Automatically

Tuning” on page 8.

PROGRAMME LABELS

The “Programme Labels” option in the “Set Up” menu allows you to name a

programme number with the channel you wish to name.

channel using up to five characters (letters or num bers). To do this:

1 After selecting the option, press , then press

2 Press . With the first element of the Label column highlighted, press

- 9 -

153

101

TELETEXT

Index

Programme

News

Sport

Weather

Teletext

Teletext is an information service transmitted by most TV stations. The index

page of the teletext service (usually page 100) gives you information on how

Picture Adjustment

Mode: Personal

to use the service. To operate teletext, use the remote control buttons as

indicated below. Please ensure you use a channel (TV Broadcast) with a

strong signal, otherwise teletext errors may occur.

To switch on Teletext :

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

view, press .

Contrast

Brightness

Colour

Sharpness

Hue

Reset

in order you can

or front connectors

not available. In that case, input another page number.

To select a Teletext page:

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

• If you have made a mistake, retype the correct page number.

• If the counter on the screen continues searching, it is because this page is

To access the next or preceding page:

Press PROGR + () or PROGR - ().

To superimpose teletext on to the TV:

Whilst you are viewing teletext, press . Press it again to cancel teletext

mode.

To freeze a teletext page:

Some teletext pages have sub-pages which follow on automatically. To stop

them, press / . Press it again to cancel the freeze.

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

Press / . Press it again to conceal the information.

To Switch Off Teletext:

Press .

AutoTV0

Detail Set Up

Auto Format:

Noise Reduction:

AV2 Output:

RGB Centring:

Picture Rotation:

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

or to a VCR

Picture Adjustment

Mode: Personal

Contrast

Brightness

Colour

Sharpness

Hue

Reset

Fastext

Fastext service lets you access pages with one but ton push. When you are

in Teletext mode and Fastext is being broadcast, a colour coded menu

appears at the bottom of the teletext page. Press the c olour button (red,

green, yellow or blue) to access the corresponding page.

AutoTV0

Detail Set Up

Auto Format:

Noise Reduction:

AV2 Output:

RGB Centring:

Picture Rotation:

Auto Format:

Noise Reduction:

AV2 Output:

RGB Centring:

Picture Rotation:

AV2 OUTPUT

The “AV2 Output” option in the “Detail Set Up” menu allows you to select the

3 and 3.

source to be output from the Scart connector

record from this Scart any signal coming from the TV or from external

If your VCR supports SmartLink, this procedure is not necessary.

equipment connected to the Scart connector

To do this: after selecting the option, press . Then press or to select

on the screen.

the desired output signal: TV, AV1, AV3 or AUTO.

If you have connected a decoder to the scart connector

Notes:

If you select “AUTO”, the output signal will always be the same one that is displayed

connected to this sca rt, please remember to chang e back the “AV2 Output” to

“AUTO” or “TV” for correct unscrambling.

RGB CENTRING

To do this: while watching an RGB source select the “RGB Centring” option

and press . Then press or to adjust the centre of the picture

it through the “RGB Centring” option in the “Detail Set Up”.

between –10 and +10. Finally press OK to confirm and store.

When connecting an RGB source, such as a “PlayStation”, you may need to

readjust the horizontal position of the picture. In that case, you can readjust

PICTURE ROTATION

Because of the earth’s magnetism, the picture may slant. In this case, you

To do this: after selecting the option, press . Then press or to

correct any slant of the picture between -5 and +5 and finally press OK to

“Detail Set Up” menu.

store.

can correct the picture slant by using the option “Picture Rotation” in the

Menu System

- 10 -

2-023-261-61

Lifting the TV Set

Recyclable

202326161

KV-28HX15U/32HX15U

Sony Corporation Printed in UK

Connecting Optional Equipment

MANUFACTURED UNDER LICENCE

FROM DOLBY LABORATORIES

"DOLBY" AND THE DOUBLE - D

SYMBOL ARE TRADEMARKS OF

DOLBY LABORATORIES

speakers will automatically be muted.

When you connect the headphon es, the TV

“PlayStation” is a product of S ony Computer Entertainment, Inc.* “PlayStation” is a trademark of Sony Compu ter Entertainment, Inc.

Using the following instructions you can connect a wide range of optional equipment to your TV set. (Connecting cables are not

supplied).

Connecting a VCR:

To connect a VCR, please refer to the section “Connecting the aerial and VCR” of this instruction manual. We recommend you connect

Connecting a VCR that supports SmartLink:

SmartLink is a direct link between the TV set and the VCR. For more information on SmartLink, please refer to the instruction manual

of your VCR. If you use a VCR that supports SmartLink, please connect the VCR by using a scart lead to the Scart 2/ F.

If you have connected a decoder to the scart 2/ or through a VCR connected to this scart:

your VCR using a scart lead. If you do not have a scart lead, tune in the VCR test signal to the TV programme number “0” by using the

“Manual Programme Preset” option. (for details of how to manually programme these presets, see page 14, step a). Refer to your VCR

instruction manual to find out how to find the output channel of your VCR.

Select the “Manual Programme Preset” option in the “Set Up” menu and after entering in the “Decoder**” option, select “On” (by

using or ). Repeat this option for each scrambling signal.

**This option is only available depending on the country you have selected in the ‘Language/Country’ menu.

Using Optional Equipment

1 Connect your equipment to the designated TV socket, as indicated in the previous page.

screen.

2 Switch on the connected equipment.

3 To watch the picture of the connected equipment, press the button repeatedly until the correct input symbol appears on the

RGB input signal through the scart connector E. This symbol appears only if a RGB source has been connected.

3 Video input signal through the phono socket B and audio input signal through C.

2 S Video input signal through the scart connector F.

3 S Video input signal through the phono socket A and audio input signal through C.

2 Audio / video input signal through the scart connector F.

1 Audio / video input signal through the scart connector E.

Symbol Input Signals

4 Press the button on the remote control to return to the normal TV picture.

Additional Information

For Mono Equipment

Connect the phono plug to the L/G/S/I socket on the front of the TV and select 3 input signal using the instructions above. Finally,

refer to the “Sound Adjustment” section of this manual and select “Dual Sound” “A” on the sound menu screen.

- 11 -

button repeatedly on the remote control until the

option in the “Detail Set Up” menu and select “Auto” to

reduce the picture noise.

Programme Preset” menu and adjust Fine Tuning

(AFT) to obtain a better picture reception.

picture slant.

factory settings.

connector on the rear of the TV.

Country” menu and select the country in which you

factory settings.

• Check that the optional equipment is on and press the

correct input symbol is displayed on the screen.

the TV.

• Check the aerial connection.

• Plug the TV in and press the button on the front of

Adjustment” menu and select “Reset” to return to the

button on the remote control.

• If the standby indicator is on, press the

• Using the menu system, select the “Picture

Adjustment” menu and select “Reset” to return to

• Using the menu system, select the “Picture

• Turn off any equipment connected to the scart

• Check that the headphones are not connected.

are operating the TV set. For cyrillic languages, we

• Using the menu system, display the “Language/

option in the “Detail Set Up” menu to correct the

recommend selecting ‘Russia’ if your own country

does not appear in the list.

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

• Using the menu system, select the “Manual

Output” to “TV”.

Then select the “Detail Set Up” option and set “AV2

• Using the menu system, display the “Set Up” menu.

• Replace the batteries.

• Contact your nearest Sony service centre.

Problem Solution

No picture (screen is dark) and

Troubleshooting

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

no sound.

Poor or no picture (screen is

dark), but good sound.

No picture or no menu

information from equipment

No unscrambled picture whilst

viewing un unscrambled

channel with a decoder

connected through the scart

Noisy picture when viewing a

Distorted picture when

changing programmes or

selecting teletext.

Wrong characters appear

connected to the scart

connector.

Good picture, no sound. • Press the + button on the remote control.

No colour on colour

programmes.

when viewing teletext.

The TV picture is slanted • Using the menu system, select the “Picture Rotation”

TV channel.

connector

Remote control does not

function.

The standby indicator on

the TV flashes.

If you continue to experience problems, have your TV serviced by qu alified personnel.

Never open the casing yourself.

Additional Information

Additional Inf ormation

Specifications

Sound Output:

2 x 14W (music power)

2 x 7W (RMS)

TV system:

Depending on your country selection: IColour system:

your TV set and a compatible

VCR. For more information on

SmartLink, please refer to your

Power Consumption:

28” : 72 W

32” : 75 W

Standby Power Consumption:

0.5 W

Dimensions (w x h x d) :

28” : Approx. 844 x 517 x 548 mm

32” : Approx. 933 x 562 x 572 mm.

Weight:

28” : Approx. 44.5 Kg

32” : Approx. 60.0 Kg

Accessories supplied:

1 remote control (RM-947)

2 x IEC designated AA size

batteries

Other features:

• Teletext, Fastext, TOPtext.

• Sleep Timer.

21-pin scart connector (CENELEC

(SMARTLINK)

2/ 2

standard) including audio/video input,

RGB input, TV audio/video output.

21-pin scart connector (CENELEC

standard) including audio/video input, S

PAL, SECAM

NTSC 3.58, 4.43 (only Video In)

Channel Coverage:

UHF: B21-B69

Picture Tube:

Flat Display FD Trinitron WIDE

28” (approx. 71 cm. measured diagonally)

32” (approx. 82 cm. measured diagonally)

Rear Terminals

VCR instruction manual).

• SmartLink (direct link between

video input, selectable audio/video output

and SmartLink interface.

Front Terminals

• TV system autodetection.

3 S-video input – 4 pin DIN

3 video input – phono jack

headphones jack

3 audio input – phono jacks

Design and specifications are subject to change withou t notice.

- 12 -

2-1. Rear Cover Removal

SECTION 2 DISASSEMBLY

Remove the rear cover fixing screws indicated and withdraw the rear cover from the Beznet.

2-2. Chassis Removal and Refitting

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

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.

- 13 -

2-3. A Board Removal [ Step 1 ] 2-4. A Board Removal [ Step 2 ]

Clip.

Screw.

Remove the 3 screws securing the PWB to the main bracket. 1 can be seen in the photo above and the other 2 are either side of the FBT assembly.

2-5. F3 Board Removal

Release the 5 securing clips located around the side of the chassis and slide the PWB clear of the bracket.

2-6. Service Position

Clip.

Release the 2 securing clips located along the side of the chassis and slide the PWB clear of the bracket.

Position the chassis as indicated to access the solder side of the PWB’s. To gain access to the A Board follow the instructions on page 16. [Removal and Replacement of the main bracket bottom plates ].

- 14 -

2-7. Picture Tube Removal

WARNING:

BEFORE REMOVING

THE ANODE CAP

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

Coated Earth Ground Strap

1. Discharge the anode of the CRT and remove the anode cap.

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

3. Remove the C Board from the CRT.

4. Remove the chassis assembly.

5. Loosen the Neck assembly fixing screw and remove.

6. Loosen the Deflection yoke fixing screw and remove.

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

8. Remove the Degaussing Coils.

9. Remove the CRT grounding strap and spring tensioners.

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

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

- 15 -

For safety reasons, on no account should the plates be re-

moved and not refitted after servicing.

(2) REFITTING THE PLATES

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

location.

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

be fitted into their catch positions.

Catch

Ta b

REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET

BOTTOM PLATES.

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 A 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 2 plates fitted to the main bracket.

- 16 -

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 .................... 80% [or remote control normal]

Brightness ................... 50%

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.

3-1. Beam Landing

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

Contrast and Brightness to normal.

2. Set the pattern generator raster signal to Red.

3. Move the deflection yoke forward and adjust with the

purity control so that the Red is at the centre and the Blue and Green take up equally sized areas on each side of the screen. [See Fig.3-1 - 3-3].

4. Move the deflection yoke backwards and adjust so that the

entire screen becomes Red. [See Fig.3-1]

5. Switch the raster signal to Blue, then to Green and verify

the condition.

6. When the position of the deflection yoke has been

determined, fasten the deflection yoke with the screws.

7. If the beam does not land correctly in all the corners, use a

magnet to correct it. [See Fig.3-4]

Carry out the adjustments in the following order :

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

Note : Test equipment required.

1. Color bar/pattern generator.

2. Degausser.

3. Oscilloscope.

4. Digital multimeter.

Fig. 3-2.

Purity

Fig. 3-3.

GREEN

RED

BLUE

Disk magnets or rotatable disk

Purity control corrects this area

magnets correct these areas (a-d)

Fig. 3-1.

Caution :

High voltages are present on the Deflection yoke terminals

- take care when handling the Deflection yoke whilst carrying out adjustments.

- 17 -

Fig.3-4

Deflection yoke positioning corrects these areas

Disk Magnets

GBR

3-2. Convergence

Preparation:

4. If the V.STAT magnet is moved in the direction of the (a) and (b) arrows, the Red, Green and Blue points move as

indicated below.

• Before starting this adjustment, adjust the focus, horizontal

size and vertical size.

• Minimize the Brightness setting.

• Input a dot pattern from the pattern generator.

Horizontal and Vertical Static Convergence

Center dot

H STAT

convergence

control

V.STAT Vertical Static Magnet

C Board

RV702 (H STAT) H STAT Convergence (on mount side)

Fig.3-5

1. [Moving horizontally], adjust the H.STAT control so that the Red, Green and Blue points are on top of each other at the centre of the screen.

Operation of the BMC (Hexapole) magnet.

2. [Moving vertically], adjust the V.STAT magnet so that the Red, Green and Blue points are on top of each other at the centre of the screen.

3. If the H.STAT variable resistor is unable to bring the Red, Green and Blue points together at the centre of the screen, adjust the horizontal convergence with the H.STAT variable resistor and the V.STAT magnet in the manner indicated below. [In this case, the H.STAT variable resistor and the V.STAT magnet influence each other].

• Tilt the V.STAT magnet and adjust the static convergence by

opening or closing the V.STAT magnet.

The movement of the magnets interact with each other and so the respective dot position should be monitored while carrying out this adjustment. Use the H.STAT VR to adjust the Red, Green and Blue dots so that they coincide at the centre of the screen (by moving the dots in the horizontal direction).

- 18 -

+ 40 hidden pages

Sony kv28hx15b schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

SERVICE MANUAL

TABLE OF CONTENTS

CAUTION

21 pin connector

Rear Connection Panel Front Connection Panel

SECTION 1 GENERAL

Introducing and Using the Menu System

Menu Guide

TELETEXT

Fastext

Lifting the TV Set

Connecting Optional Equipment

Using Optional Equipment

Troubleshooting

Specifications

SECTION 2 DISASSEMBLY

Horizontal and Vertical Static Convergence

convergence