Sony Trinitron KV-28DC20B Service Manual

SERVICE MANUAL

BE-3E

CHASSIS

MODEL

KV-28DC20B

COMMANDER DEST CHASSIS NO.

RM-931 FR SCC-Q23D-A

MODEL

COMMANDER DEST CHASSIS NO.

AB

CED
LUN MAR MER

JEU

VEN

DIM JOURNEE NUIT

SOIREE

PREFER -/--

SERV PERSO

PILOTE PROGR

MENU

TV

TV/SAT

SAM

SORTIE

PROGR

R

RM-931

1

TABLE OF CONTENTS

Section Title Page Section Title Page

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

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

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

1. GENERAL

Automatically Tuning the TV .................... 9

Adjusting the Picture & Sound .................... 10

Using the Further Programme

Preset Feature .................... 11

Manually Tuning the TV .................... 12

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

Specifications .................... 15

Troubleshooting .................... 15

2. DISASSEMBLY

2-1. Rear Cover Removal .................... 16

2-2. Chassis Assy Removal .................... 16

2-3-1. Service Position(1) .................... 16

2-3-2. Service Position(2) .................... 16

2-4. Wire Dressing .................... 17

2-5. A Board Removal .................... 17

2-6. A Extension Board .................... 17

2-7. Picture Tube Removal .................... 18

Removal and Replacement of

the Main-Bracket Bottom Plates.................... 19

3. SET-UP ADJUSTMENTS

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

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

3-3. Screen (G2) .................... 23

3-4. Focus .................... 23

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

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

* VM Board .................... 52

* H Board .................... 53

* D2 Board .................... 55

* J4 Board .................... 56

* N Board .................... 59

* J3 Board .................... 74

* J5 Board .................... 76

* D1 Board .................... 77

* A Board .................... 83

* A2 Board .................... 89

5-4. Semiconductors .................... 95

5-5. IC Blocks .................... 97

6. EXPLODED VIEWS

6-1. Chassis .................... 99

6-2. Picture Tube .................... 100

7. ELECTRICAL P ARTS LIST .................... 101

4. CIRCUIT ADJUSTMENTS

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

4-2. ‘TT’ T est Mode .................... 27

4-3. ‘T’ T est Mode .................... 28

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.

£

ON

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

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3

21 pin connector

21
19
17
15
13
11

9
7
5
3
1

20
18
16
14
12
10

8

6
4
2

Pin No 1 2 4 Signal Signal level

1 Audio output B

2

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

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

8 Function select

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

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

15

_ (S signal Chroma

16 Blanking input

17 Ground (video

18 Ground (video

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

20

_ Video input

21 Common ground

(right)
Audio output 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)

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

(-3+10dB)

Rear Connection Panel

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S-Video

socket

4

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

rebmuNrorrE noitpircseDrorrE

00 )noitidnoclamronni00swohsredaeRrorrEVT(rorreoN
10 )DELnohsalfesnopserscriShtiwdesufnocebyam(dewollatoN

20)cnyS-VoN&PVO,PCO(pirttiucricnoitcetorP

30)E3-EBrof2rorrenidedulcnI(PVOrofdevreseR
40 )E3-EBrof2rorrenidedulcnI(cnyS-VoNrofdevreseR
50BKA
60>ylnopUrewoP<woLlcSCII
70>ylnopUrewoP<woLadSCII
80>ylnopUrewoP<woLlcS&adSCII
90>ylnopUrewoP<egdelwonkcaonrellortnocelgnuJ
01 >ylnopUrewoP<egdelwonkcaon)0402AXC(hctiwSoediV
11egdelwonkcaonrenuT
21egdelwonkcaonPSM
31egdelwonkcaonMVN
41egdelwonkcaon)9802AXC(hctiwsVA
51desUtoN
61egdelwonkcaon)5781AXC(rednapxEtroP
71desUtoN
81egdelwonkcaon)0708AXC(ecnegrevnoCcimanyD
91 >noitasilaitinIsissahC<-)KOkcehcnorewoplaitiniretfa(elgnujesilaitinItonnaC
02 )tsetV9+(kcehcpurewopretfaeruliafesnopserrellortnocelgnuJ
12 >noitasilaitinIsissahC<-tesernorewoptonnac)0402AXC(hctiwSoediV
22 )tsetV9+(kcehcpurewopretfaeruliafesnopser)0402AXC(hctiwSoediV
32 )!orcimsaemas-V5+YBTS(noitasilaitiniretfaliafegdelwonkcaMVN
42 >redaeRrorrEnOyalpsiD-lataFeBtoNyaM<eruliafemit-nurPSM
52 >redaeRrorrEnOyalpsiD-lataFeBtoNyaM<eruliafemit-nurPSD
62 >eruliafemiT-nuR<dnesatadretfatuoemitwolkcolCsubL3M
72 >kcehCpUrewoPtA<dnesatadretfatuoemitwolkcolCsubL3M
82 >noitasilaitinItA<dnesatadretfatuoemitwolkcolCsubL3M
92>ylnOpUrewoP<woLdxTL3M
03>ylnOpUrewoP<woLdxRL3M
13>ylnOpUrewoP<woLelbanEL3M
23>ylnOpUrewoP<liaftsettxeTtcapmoC

33)tswetV5+(dnopsertonseodtxeTtcapmoC
43 >redaeRrorrEnOyalpsiD-lataFeBtoNyaM<eruliafemit-nurtxeTtcapmoC

5

Protection Error (Error 2)

Once every main loop (approximately 200ms OSD mode, 50ms text or menu mode), the micro checks the protection pin (pin 66). If the protection
pin is high 6 successive times, a protection error is 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 reset is
attempted.

AKB Error (Error 5):

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

If this error is diagnosed, the r espective NVM r egister 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

10090807050 60403020100

IKR
Return

BCD EF

A

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

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

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

MVN noitpircseDrorrE

6wolnipLCS
7wolnipADS
8wolerasnipADSehtdnaLCShtoB

9)6702AXC(elgnujehtmorfegdelwonkcaoN

01)0402AXC(hctiwsoedivehtmorfegdelwonkcaoN
11renutehtmorfegdelwonkcaoN
21PSMehtmorfegdelwonkcaoN
31MVNehtmorfegdelwonkcaoN
41hctiwsoediv9802AXCehtmorfegdelwonkcaoN
61 rednapxEtroPoediv5781AXCehtmorfegdelwonkcaoN
81 )0708AXC(ecnegrevnoCcimanyDehtmorfegdelwonkcaoN

72.tsetMARtxeTtcapmoCretfawolnipDXT_L3M
92woLniPDXT_L3M
03woLniPDXR_L3M
13woLniPNEL3M
23liaftsetMARtxeTtcapmoC

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

6

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

MVN noitpircseDrorrE

91 esilaitiniotgnitpmettanehwelgnujehtmorfegdelwonkcaoN
02 sretsigerdaerotgnitpmettanehwelgnujehtmorfegdelwonkcaoN
12noitasilaitinignirudteseretelpmoctonnachctiwSVA
22 sretsigerdaerotgnitpmettanehwhctiwSVAmorfegdelwonkcaoN
32 etirwrodaerotgnitpmettanehwMVNehtmorfegdelwonkcaoN

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

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

MVN noitpircseDrorrE

62

82
33 .secivedfonoitasilaitinigniruddeliaftsetMARtxeTtcapmoC

.)elbissop

.)elbissop

sawnoitacinummocontahtseilpmi(18retsigergnikcehcnehwwolnipDXT_L3M

sawnoitacinummocontahtseilpmi(esilaitiniotgnitpmettanehwwolnipDXT_L3M

In the case of these errors, the ‘device reset’ pin will be held low for 60ms, causing a hardwar e r eset of Compact Text. Following this reset, a longer
timeout will be allowed for the M3L bus to recover. If the error still exists, the NVM register will be incr emented and the sof twar e will carry on.

MVN noitpircseDrorrE

43

.)detpurrocemocebroteser

rehtiesahtxeTtcapmoCtahtseilpmi(hgihnipDXT_L3Mtub,liafkcehc18retsigeR

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

MVN noitpircseDrorrE

:gniwollofehtfoynaybdesuacebnac42rorrE

42

.)detpurrocemoceb

52

.)detpurroc

.)detpurrocemocebroteserrehtiesah

.noitcurtsniteseregdelwonkcaotsliafPSM-

PSMehttahtseilpmi(liafkcehcretsigeRelacserPtracS,noitasilaitiniPSMretfA-

roteserrehtiesahPSMehttahtseilpmi(liafkcehcretsigeRelacserPtracS-

emocebroteserrehtiesahPSMehttahtseilpmi(detpurrocetybtsetPSD

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

7

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 (0 if no error). This display mode
will appear as follows :

ERROR DISPLAY MODE

CURRENT ERROR CODE = 0

Error Code Times Error Code Times

2 0 19 0
3 0 20 0
4 0 21 0
5 0 22 0
6 0 23 0
7 0 24 0
8 0 25 0
9 0 26 0
10 0 27 0
11 0 28 0
12 23 29 0
13 0 30 0
14 0 31 0
15 0 32 0
16 0 33 0
17 0 34 0
18 1

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.

8

SECTION 1 GENERAL

Additional TV Features

Re-arranging the TV channels

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

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

. . . .. . . . .

. . . .. . . . .

the menu on the TV screen.

button to

b

button on the remote control to select the

v

symbol on the menu screen then press the

2. Press the

E

TV/SAT

D

AB

C

11

buttons to select the channel you want

PILOTE PROGR

MENU

v

or

V

4. Press the

to move then press the OK button to confirm.

PROGR

button to select ‘Ordre des Chaînes’ then

button to enter the ‘ORDRE DES CHAINES’

v

b

enter the ‘PRESELECTION’ menu.

press the

menu.

3. Press the

SAM

SORTIE

VEN

SOIREE

JEU

LUN MAR MER

DIM JOURNEE NUIT

PREFER -/--

SERV PERSO

buttons to select the new programme

v

or

V

position (eg PROG 4) for your selected channel then

5. Press the

R

RM-931

press the OK button to confirm. The channel you selected

in step 4 now moves to its new programme position.

TV

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

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.

Additional TV Features

Automatically tuning the TV

You have already tuned in all available channels using the ‘Automatically tuning the TV’ section at the start of this manual. If

you need to repeat the tuning procedure however, follow the instructions below and the TV automatically searches and stores all

. . . .. . . . .

. . . .. . . . .

button to

b

button to select ‘Mémorisation Auto’

v

button on the remote control to select the

v

the menu on the TV screen.

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

symbol on the menu screen then press the

2. Press the

E

TV/SAT

D

AB

C

LUN MAR MER

or

V

enter the ‘PRESELECTION’’ menu.

3. Press the

SAM

VEN

JEU

DIM JOURNEE NUIT

available analogue TV channels for you.

button to display the autotune menu.

b

then press the

SORTIE

SOIREE

PREFER -/--

buttons to select ‘Oui’ then press the

v

or

V

4. Press the

SERV PERSO

OK button to con firm.

PILOTE PROGR

MENU

5. A new menu appears asking you to check that the

antenna is connected. Ensure the antenna is connected

then press the OK button to confirm. The TV now starts

to automatically search and store all available channels

for you. Please be patient and do not press any buttons

once this search and store operation has started.

menu disappears from the TV screen. Press the

PROGR+/- or the numbered buttons on the remote

6. When the automatic tuning procedure is complete, the

R

PROGR

RM-931

automatic tuning procedure.

control to view the TV channels.

Note: Press the MENU button if you wish to stop the

TV

10

9

. . . .. . . . .

. . . .. . . . .

. . . . . . . . .

13

. . . . . . . . .

buttons to adjust your selected item.

B

or

b

5. Press the

SORTIE

SOIREE

PREFER -/--

B

Headphones

i Volume

i Son Stereo Stereo b Mono (for a stereo broadcast)

(for a bilingual broadcast)

A for channel 1 b B for channel 2

(for a bilingual broadcast)

Jazz

Aigus

Graves

Rock

B Pop

button to return to the ‘CONTROLE DU SON’ menu.

7. If you selected ‘Réglage du Son’ in step 3, press the

PILOTE PROGR

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

MENU

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

screen.

Réglage du Son b Personnel

PROGR

Balance

R

RM-931

button to store the new setting.

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

SERV PERSO

stay the same

to the broadcast signal

B Off: volume level changes according

Raz Resets picture to factory preset levels

Effet Spatial b On: volume level of the channels will

A for channel 1 b B for channel 2

Son Sound Ster eo b Mono (for a stereo broadcast)

TV

adjusted over a range of -12 to +12.

Vol individuel The channel volume level c an be

button to confirm.

b

you wish to adjust then press the

E

D

C

or

V

button to confirm.

b

buttons to select the item on the screen you wish to

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

the table below.

v

adjust then press the

4. If you selected ‘Réglage du Son’ in step 3, press the

SAM

VEN

JEU

LUN MAR MER

DIM JOURNEE NUIT

b

button on the remote control to select

buttons to select the item on the screen

v

v

or

or

V

V

the menu on the TV screen.

the symbol on the menu screen then press the

button to enter the ‘CONTROLE DU SON’ menu.

2. Press the

3. Press the

TV/SAT

AB

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

Adjusting the sound

Additional TV Features

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

. . . .. . . . .

Adjusting the picture

Additional TV Features

. . . .. . . . .

. . . .. . . . .

button to enter

b

button to confirm. For a

b

button to confirm.

buttons to select the item on the screen you

button on the remote control to select the

v

v

or

or

V

V

menu on the TV screen.

the ‘CONTROLE DE L’IMAGE’ menu.

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

wish to adjust then press the

symbol on the menu screen then press the

2. Press the

3. Press the

E

TV/SAT

D

AB

C

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

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

b

buttons to adjust your selected item.

B

or

b

buttons to select the item on the screen you wish to

v

or

below.

V

adjust then press the

4. If you selected ‘Réglage Image’ or ‘Ratio’ in step 3, press the

SAM

VEN

JEU

LUN MAR MER

DIM JOURNEE NUIT

5. Press the

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

SORTIE

SOIREE

PREFER -/--

button to return to the ‘CONTROLE DE L’IMAGE’ menu.

store the new setting.

B

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

7. If you selected ‘Réglage Image’ or ‘Ratio’ in step 3, press the

MENU

SERV PERSO

PILOTE PROGR

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

screen.

Cinéma (for films)

B Concert (for live broadcasts)

buttons to select the desired mode.

v

Teinte**

Couleurs*

Netteté*

Luminosité*

Réglage Image Réglage Image b Personnel (for individual settings)

PROGR

Contraste

Raz Resets picture to factory preset leve ls

R

RM-931

Haut/Bas 0

Auto 16:9 b Non b Oui

Ratio Ratio (refer to page 14 for details)

** Available for NTSC colour system only.

*Only if you select ‘Personnel’ in ‘Réglage Image’.

‘CONTROLE DU SON’ menu screens.

Changing picture and sound modes quickly

You can quickly change the Picture Mode or the Equalizer Mode

without entering the ‘CONTROLE DE L’IMAGE’ or the

or

V

or the symbol for equalizer modes.

2. Press the

screen.

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

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

TV

12

10

. . . .. . . . .

. . . .. . . . .

button to enter the

b

buttons to adjust the picture rotation.

button to select the symbol on the menu

v

button to select ‘Rotation de l’image’ then

v

B

or

button to highlight the 0 (zero) on the right

b

b

Additional TV Features

Adjusting the picture rotation

If, due to the earth’s magnetic field, the picture slants, you can use this feature to readjust the picture.

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

. . . .. . . . .

‘PRESELECTION’ menu.

the menu on the TV screen.

screen then press the

2. Press the

E

TV/SAT

D

AB

C

LUN MAR MER

. . . .. . . . .

press the

of the menu.

3. Press the

SAM

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DIM JOURNEE NUIT

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SERV PERSO

The adjusting range is -5 to +5.

4. Press the

MENU

PILOTE PROGR

TV screen.

5. Press the OK button to store the new range.

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

R

PROGR

RM-931

TV

16

15

button repeatedly

b

button to enter the

b

button to select the symbol on the menu

v

the menu on the TV screen.

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

Using the Further Programme Preset feature

Additional TV Features

With this feature you can manually fine-tune the TV to obtain a better picture reception if the picture is distorted.

screen then press the

2. Press the

E

TV/SAT

D

AB

C

‘PRESELECTION’ menu.

LUN MAR MER

buttons to select the relevant

PILOTE PROGR

MENU

v

or

V

4. Press the

button to select ‘présélection (suite)’ then

button to enter the ‘PRESELECTION

v

b

(SUITE)’ menu.

press the

3. Press the

SAM

SORTIE

VEN

SOIREE

JEU

DIM JOURNEE NUIT

PREFER -/--

SERV PERSO

buttons to fine tune the channel

v

or

V

programme number then press the

frequency over a range of -15 to +15. Press the OK

to select AFT column.

button to confirm. Repeat steps 4 and 5 if you wish to

5. Press the

PROGR

fine tune other channels.

TV screen.

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

R

RM-931

TV

11

. . . .. . . . .

. . . .. . . . .

button to enter the

b

button to select the symbol on the TV

v

19

v

or

buttons to search for the next available

v

or

V

V

button to

b

button to enter the

b

button to confirm.

b

buttons to select an unused programme

v

button to se lect ‘Mémorisation Manuelle’ on

v

or

V

buttons to select the TV broadcast

v

or

V

button to confirm.

b

buttons to select C for terrestrial

v

or

V

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

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

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

. . . .. . . . .

. . . .. . . . .

the menu on the TV screen.

screen then press the

2. Press the

E

TV/SAT

D

AB

C

button

b

‘MEMORISATION MANUELLE’ menu.

‘PRESELECTION’ menu.

the menu screen then press the

3. Press the

SAM

SORTIE

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SOIREE

JEU

LUN MAR MER

DIM JOURNEE NUIT

PREFER -/--

SERV PERSO

MENU

PILOTE PROGR

enter.

number for your channel then press the

4. Press the

PROGR

5. Press the

system (I for UK, L for France or B/G for Western

European countries) or a video input source (AV1,

AV2 ...) then press the

channels or S for cable channels in the ‘CANAL’

6. Press the

R

RM-931

column, then press the

7. Select the first number digit of ‘CANAL’ (channel) then

buttons on the remote controlorPress the

the second number digit of ‘CANAL’ with the number

TV

channel.

programme number you selected, press the

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

button.

press the MENU button to remove the menu from the

buttons on the remote control to continue searching for

the desired channel.

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

TV screen.

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

17

button on the remote control to select the

v

symbol on the menu screen then press the

the menu on the TV screen.

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

Using the parental lock

Additional TV Features

This feature enables you to prevent undesirable broadcasts appearing on the TV.

2. Press the

E

TV/SAT

D

AB

C

LUN MAR MER

to enter the ‘PRESELECTION’ menu.

symbol appears before the

button to select ‘Verrouillage Parental’ then

button to enter the ‘VERROUILLAGE

v

b

press the

PARENTA L’ menu.

3. Press the

SAM

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DIM JOURNEE NUIT

PREFER -/--

SERV PERSO

PILOTE PROGR

MENU

button to select the channel you wish to

v

4. Press the

block then press the OK button to confirm your

selection. The

programme position to indicate this channel is now

blocked. To unblock the channel, press the OK button

again. The symbol disappears.

5. Repeat step 4 if you wish to block other chan nels.

PROGR

TV screen.

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

R

RM-931

TV

12

25

TELETEXT

153

101

98

TELETEXT

Index

Programme

News

Sport

Weather

25

153

TELETEXT

Index

Programme

News

25

153

101

98

TELETEXT

Index

Programme

News

Sport

Weather

101

98

Sport

Weather

25

153

101

TELETEXT

Index

Programme

News

Sport

98

Weather

Additional TV Features

Teletext

the channel which carries the teletext service you wish

signals are weak.

to receive.

teletext.

buttons on the remote control. If you make a mistake,

complete the number then re-enter the correct page

Switching Teletext on and off

1. Press a numbered button on the remote control to select

E

TV/SAT

D

AB

C

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

SAM

VEN

JEU

LUN MAR MER

Teletext is an information service transmitted by most TV stations.

. . . .. . . . .

. . . .. . . . .

button

b

3. Select the required page number using the numbered

DIM JOURNEE NUIT

SORTIE

SOIREE

PREFER -/--

number.

4. Press the button to switch off teletext.

SERV PERSO

Note: Teletext errors may occur if the broadcasting

MENU

PILOTE PROGR

Using Other Teletext Functions

PROGR

To superimpose Teletext on to the TV

Press the button on the remote control once if in teletext

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

the TV picture. Press the button once more to cancel.

To move to the next or preceding page

Press the or buttons to select the previous or next

R

RM-931

page.

TV

To freeze a Teletext page

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

the freeze.

Revealing concealed information ( eg:answer s to a

quiz).

Press the button to reveal information. Press again to

conceal the information.

Using colour buttons to access pages (Fastext)

(only available if the TV station broadcasts Fastext signals)

When the colour coded menu appears at the bottom of a

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

the control to access the corresponding page.

22

button to

b

button on the remote control to select the

v

symbol on the menu screen then press the

the menu on the TV screen.

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

Skipping programme positions

Additional TV Features

This function enables you to skip unused programme positions when selecting them with the PROGR+/- buttons. However, by

using the number buttons you can still select the skipped programme position.

2. Press the

E

TV/SAT

D

AB

C

to enter the ‘PRESELECTION’ menu.

LUN MAR MER

PILOTE PROGR

MENU

buttons to select the programme

v

or

V

4. Press the

button to select ‘---’ then press the OK

v

position you want to skip then press the

enter the ‘STD’ column.

PROGR

5. Press the

button to store.

6. Repeat steps 4 and 5 to skip other programme positions.

R

RM-931

TV screen.

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

TV

button to enter the ‘MEMORISATION

b

button to select ‘Mémorisation Manuelle’

v

MANUELLE’ menu.

then press the

3. Press the

SAM

SORTIE

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DIM JOURNEE NUIT

PREFER -/--

SERV PERSO

20

13

Selecting the output source for the

. . . .. . . . .

. . . .. . . . .

H

or

G

scart socket

2

s

2

button to confirm.

b

button to enter the ‘CONNEXION

b

buttons to select the desired source (see

button to select the symbol on the menu

v

the menu on the TV screen.

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

screen then press the

2. Press the

button to highlight ‘Ecran TV’ (input source

v

VIDEO’ menu screen.

3. Press the

B

or

b

3

or socket) then press the

for the TV screen) or ‘Sortie’(output source for /

below) then press the OK button to confirm:

TV Screen TV, AV1, RGB, AV2, YC2, AV3, SAT

4. Press the

Output TV, AV1, AV2, YC2, AV3, SAT, AUTO

screen.

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

E

TV/SAT

Connecting equipment to the TV

Optional Equipment

AB

P

__

++

2

MONO

L/G/S/I R/D/D/D

2

s

SAM

SORTIE

D

VEN

SOIREE

C

JEU

LUN MAR MER

DIM JOURNEE NUIT

PREFER -/--

8mm/Hi8

camcorder

P

__

++

MONO

2

L/G/S/I R/D/D/D

2

s

D

C

B

SERV PERSO

MENU

PILOTE PROGR

S-VHS/Hi8

camcorder

PROGR

A

G

G

F

F

H

G

D

C

B

R

RM-931

SORTIE

AUDIO

NUMERIQUE

OPTIQUE

TV

24

5V 200mA

I J
H

5V 200mA

MODEM

3

G

2

S

2

1

L/G/S/I

R/D/D/D

F

E

MODEM

3

SORTIE

AUDIO

NUMERIQUE

OPTIQUE

2

S

2

1

L/G/S/I

R/D/D/D

Modem

Telephone

socket

Hi-Fi

VCR

DAT

player

2

1

PlayStation

23

2

EE

D

D

H

J

• Audio/video input signal through the scart connector

• RGB input signal through the scart connector

Connecting equipment to the TV

Optional Equipment

Using the following instructions, you can connect a wide range of optional equipment to your TV.

Connecting equipment to the TV

1. Connect your equipment to the correct TV socket (as shown in the diagram).

for your equipment appears on the TV screen:

2. Press the button repeatedly on the remote control until the correct input symbol

Symbol Input signals

1

B

C

phono sockets and

phono sockets and

• Audio/video in put signal through the scart connector or the

• S video inpu t sig nal through the scart connector or the

• Audio/video input signal through the scart connector

4. To return to the normal TV picture, press the button on the remote control.

Note: To avoid picture distortion, do not connect equipment to the , , and

sockets at the same time.

Additional information when connecting equipment

Connecting a VCR

tune in the VCR signal to TV programme number ’0’.

We recommend you connect your VCR to the socket using a scart lead. If you do not

have a scart lead, use the ‘Manually Tuning the TV’ section of this instruction manual to

3

2

3

2

s

3. Switch on the connected equipment.

A

A

Connecting headphones

Plug in your headphones to the socket on the front of the TV set.

Connecting to external audio equipment

EE

manual).

For mono equipment

Plug in your hi-fi equipment to the sockets on the rear of the TV if you wish to amplify

the audio output from the TV. The output level from the sockets can be varied by

Connect the phono plug to the L/G/S/I socket on the front of the TV and select the

adjusting the volume of the headphones (refer to the ‘Adjusting the sound’ section of this

I

section of this manual and select ‘A’ on the sound menu screen.

For DAT players

Connect to the digial audio socket on the rear of the TV.

Connecting a modem

Connect the modem unit to the connection on the rear of the TV and your telephone

input signal using the instructions on this page. Finally, refer to the ‘Adjusting the sound’

socket.

14

Additional Information

Troubleshooting

/

button on the remote control.

using the button on the front of the TV.

display. Adjust the brightness, picture and colour balance

levels.

the factory settings.

the RGB symbol is displayed on the screen.

remote control.

display and adjust the colour setting.

the factory settings.

the rear of the TV.

TV/SAT b utton until it lights up green for TV mode or red for

• Press the button on the front of the TV.

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

• Check the aerial or satellite connection.

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

• Using the MENU system, select the Control de l’image

• From the Control de l’image display select Raz to return to

• Press the button repeatedly on the remote control until

• Press the button on the remote control.

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

Problem Solution

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

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

Poor or no picture (screen is dark), but

good sound.

Poor picture quality when watching

an RGB video source.

Good picture, no sound

No colour on colour programmes • Using the MENU system, select the Control de l’image

• From the Picture Adjustment display select Raz to return to

• Turn off any equipment connected to the scart connectors on

Distorted picture when changing

programmes or selecting T elet ext

SAT mode.

• Check the remote control is in the correct mode. Press the

• Contact your nearest Sony service centre.

Remote control does not function • Replace the batteries.

The standby indicat or on the TV

flashes

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

• NEVER open the casing yourself.

28

Specifications

Additional Information

TV system

L, B/G/H, I, DK

Colour system

PAL, SECAM

NTSC 3.58, 4.43 (only Video In)

MPEG 2

Channel coverage

See ‘Receivable Channels’ on the next page.

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

Audio outputs - phono jacks

One optical digital audio output socket

Video input -phono jacks

Audio inputs - phono jacks

S video input - 4 pin DIN

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

input, RGB input, TV audio/video output.

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

input, selectable audi o/video output.

2

s

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

3

2

Picture tube

1

FD Trinitron WIDE

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

Rear Terminals

Headphones jack - minijack stereo

123W

Approx. 761x496x525mm

2

2

s

Front Terminals

Sound output

Left/Right: 2x20W (music power)

Sub woofer: 20W (music power)

Power consumption

Approx. 45.0kg

Dimensions (wxhxd)

Weight

Accessories supplied

RM-931 remote control (1)

IEC designated size AA battery (2)

V.23 MODEM

Other features

Teletext

Design and specifications are subject to change without notice.

26

15

1 Clip bracket into Beznet

SECTION 2

DISASSEMBLY

2-2. CHASSIS ASSY REMOVAL

2 8 Screws

(BTVTP 4x16)

1 1 Screw (BTVP 4x16)

3 Rear Cover

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

2 Insert into heatsink

2-1. REAR COVER REMOVAL

1 Snap off from main bracket

16

A Board

1 Remove CN301 before removing A board

2-5. A BOARD REMOVAL

A board

2-6. A EXTENSION BOARD

BE-3E Extension Board

2-4. WIRE DRESSING

17

• REMOVAL OF ANODE-CAP

c

b

a

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

* REMOVING PROCEDURES.

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

Anode button

3 When one side of the rubber cap is

separated from the anode button, the

anode-cap can be removed by turning

up the rubber cap and pulling it up in

the direction of the arrow c

b

2 Using a thumb pull up the rubber cap

firmly in the direction indicated by the

arrow b

anode connector.

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

hook sticks out.

Turn up one side of the rubber cap in

the direction indicated by the arrow a

1

• HOW TO HANDLE THE ANODE-CAP

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

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

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

2 Chassis assy

8 Degaussing coils

7 DGC holders

2-7. PICTURE TUBE REMOVAL

9 Spring Extension

3 C board

10 Four PT screws

5 Neck assy

4 VM Board

Anode cap

6 Deflection yoke

1

Cushion

11 Picture tube

18

19

Fig 2

NUMERICAL MARKINGS

ATTENTIONATTENTION

THIS PLATE MUST BE REMOVED

(TURN 180' NOT FLIP OVER)

AFTER CUTTING AWAY

FOR SAFETY REASONS

THIS PLATE MUST BE REMOVED

AFTER CUTTING AWAY FOR THE SAFETY REASON.

22

2

2

1

1

44

3

4

4

REFITTING REFITTING

ATTENTIONATTENTION

THIS PLATE MUST BE REMOVED

(TURN 180' NOT FLIP OVER)

AFTER CUTTING AWAY

FOR SAFETY REASONS

22

2

2

1

1

Cut points

Fig 1

MAIN BRACKET

INSERT FROM

THE BOTTOM

SIDE

FIG 3

Fig 4

REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET

BOTTOM PLATES.

(1) REMOVING THE PLATES

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

wiring board, the bottom plates fitted to the main chassis bracket require to be

removed.

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

indicated by arrows.

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

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

(2) REFITTING THE PLATES

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

their original location.

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

1. Identify the plate by locating its marking.

2. Rotate the plate through 180’ (do not flip over).

3. Locate the corresponding numerical markings indicated on the main

chassis. See Fig 2.

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

other.

£

For safety reasons, on no account should the plates be

removed and not refitted after servicing.

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.

20

• 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

Carry out the following adjustments in this order:

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

Note: Test equipment required

1. Color bar/pattern generator.

2. Degausser.

3. Digital multimeter.

4. Oscilloscope.

SECTION 3

SET-UP ADJUSTMENTS

Fig.3-1

Fig.3-2

Purity

Align Pips
on each

magnet

Neck a s sy

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

Deflection yoke

3-1.BEAM LANDING

Preparation:

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

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

(1) Adjustment of Correction Magnet for Y-Splitting

Axis

1. Input a crosshatch signal from the pattern generator.

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

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

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

5. Adjust the upper and lower pin symmetrically by ope ning or
closing the Y-splitting axis correction magnets located on the
neck assembly.

6. Return the deflection yoke to its original position.

Caution :

High voltages are present on the Deflection yoke termin als ­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.3-3].

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

2. Rough-adjust the focus and horizontal convergence.

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

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

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

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

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

8. Wh en th e posi tion of th e def lec tion y oke h as b een de term ined ,
fasten the deflection yoke with the screw.

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

Y-splitting axis correction magnet

Fig.3-3

21

HMC correction(A) HMC correction(B)

A < B

A = B

RG B

RG B

A > B

A = B

RGB

RG B

Fig.3-4

Fig. 3-5

3-2.CONVERGENCE

(1) Screen centre convergence

[Static convergence]

1. Input a dot 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.

By opening or closi ng the V.S TAT magnet, the red, green and
blue dots move as indicated below.

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 [vertical mis-convergence] by using the BMC
[Hexapole] magnet.

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

of the electron beam.

Purity control corrects
this area

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

Deflection yoke positioning
corrects these areas

a

cd

b

Disk Magnets

H.STAT

convergence

control

V.STAT

vertical static magnet

Center dot

H.STAT VR on

mount side

H.STAT convergence

B

G

R

B

G

R

GREEN

BLUE

RED

22

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

of the elect ron beam.

HAMP

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

TLH correction Assy

4-057-714-01

HTIL

Fig 3-6

Note : If you are unabl e to ad j ust the corner conve rgence

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

C < D

C = D C > D C = D

R
G

B

C
D

C

D

R
G
B

R
G

B

R
G

B

VMC correction(A) VMC correction(B)

LAYOUT OF EACH CONTROL

Y-splitting axis correction magnet

V STAT convergence magnet

BMC (Hexaploe) magnet

Purity magnet

a-d: screen-corner
convergence defect

a

b

c

d

Permalloy Assy
X-4387-214-1

Convergence adjustment with permalloy.

23

3-3.SCREEN (G2)

1. Input a dot signal from the pattern generator.

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

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

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

3-4.FOCUS

1. Receive a television broadcast signal.

2. Normalise the picture setting.

3 Adjust the focus control located on the FBT [flyback

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

3-5. WHITE BALANCE

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

2. Enter into the Service Mode.

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

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

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

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

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

SCREEN G2 ADJUSTMENT

WHITE BALANCE ADJUSTMENT

FOCUS

SCREEN (G2)

24

SECTION 4

CIRCUIT ADJUSTMENTS

5

+

+

(ON SCREEN
DISPLAY)

(DIGIT 5) (VOLUME +) (TV)

4-1.ELECTRICAL ADJUSTMENTS

Service adjustments to this model can be performed
using the supplied Remote Commander R M- 931.

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.

• ‘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.

4. Move to the corresponding adjustment using t he Up/Down
Arrow button on the remote commander.

5. Press the Right Arrow button to enter the selected adjustment.

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

HOW TO ENTER INTO SERVICE MODE

TEST MENU

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

PICTURE ADJUSTMENT

AFC mode 1
REF position 1
SCP BGR 1
SCP BGF 1
Trap fo 10
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 3
Y delay 2
D Pic ON
D Colour OFF
DC Transfe r OFF

GEOMETRY ADJUSTMENT - 4:3

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

WIDE ADJUSTMENT - 4:3

V Aspect 0
V Scroll 31
Upper V Lin 0
Lower V Lin 0
Left Blanking 7
Right Blanking 7

25

Same Level

B-Out Wavef orm

1. Input a Phillip s pat ter n.

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 signal levels.

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.

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
equa
l height as indicated below.

MSP

NICAM Prescale I 127
NICAM Prescale L 97
NICAM Prescale BG 97
NICAM Prescale DK 97
AGC ON/OFF ON
Constant gain CDB 0
FM prescale FMP 36
Zwei mono-st WHI 36
Zwei st-mono WLO 18
Zwei mono-bi WMH 36
Zwei bi-mono WLO 18
Time Zwei WML 41
Fawct limit 10
Fawct soll init FAW 12
Faw ER Tol 2
Nicam Err Max CCT 10
Nicam Err Min 0
Time Nicam 26
Audio clock ACO HIZ
Scart prescale 25
Scart volume 64

IC STATUS (CXA2076 / CXA2040)

CXA2076
H lock 1
IKR 1
VNG 0
X-RA Y 0
Colour system 7
CV1 sync 0
CXA2040
Sync sep 1
S1 mode pin 01
S2 mode pin 01
TUNER
Tuner status 01100010

TV STATUS BE3E

Text system C TEXT 2
Dolby Enabled NO
DSP Present NO
Text language set WEST
Menu language set EAST
Destination B
Ageing Disabled
Auto Shut Off Enabled
Size 28
Colour trap sw ALL
Velocity mod ON
AFT STATUS WINDOW
Digital RF NO

Micro/Jungle S DA30C263/CXA2076

Dynamic Convergence

Range Adj 0 - 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

SUB CONTRAST ADJUSTMENT

SUB COLOUR ADJUSTMENT

26

A

TUNER / IF

RV01
RV02 LV01

TP1

V SIZE

V LIN

S CORRECTION

V CENTRE

H SHIFT

H SIZE

PIN AMP

TILT

CORNER PIN

V ANGLE

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

2. Enter into th e ‘IF Adjustme nt’ service mode [i.e ‘ TT59’] t o 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.

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

2. Enter in to the ‘IF Adjustmen t’ service m ode [i.e ‘ TT59’] t o f ix
the I.F frequency to 34.2MHz.

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

4. Adjust the RV02 control until the ‘AFT Status’ indicates a
‘Window’ condition.

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 obta in a voltage of 3.0V +/- 0.3V.

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

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

SYSTEM B/G, D/K, I & L I.F ADJUSTMENT

SYSTEM L BAND 1 I.F ADJUSTMENT

STUNER AGC ADJUSTMENT

DEFLECTION SYSTE M ADJUSTMENT

GEOMETRY ADJUSTMENT

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