THOMSON 42WS90E Schematic

SERVICE MANUAL
DOCUMENTATION TECHNIQUE
TECHNISCHE DOKUMENTATION
DOCUMENTAZIONE TECNICA
DOCUMENTACION TECNICA

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WARNING : Before servicing this chassis please read the safety recommendations.

ATTENTION : Avant toute intervention sur ce châssis, lire les recommandations de sécurité.

ACHTUNG : Vor jedem Eingriff auf diesem Chassis, die Sicherheitsvorschriften lesen.

ATTENZIONE : Prima di intervenire sullo chassis, leggere le norme di sicurezza.

IMPORTANTE : Antes de cualquier intervención, leer las recomendaciones de seguridad.

Code : 351 530 30 - 0301 / 00M - Print.

42WS90E

42WS90E2

TV

Plasma

MAIN

FRANÇAIS ESPAÑOLDEUTSCHENGLISH ITALIANO

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21

NC

NC

21

17

19

15
13

20
18
16
14
12

11
9

10
8

7
5
3
1

6
4
2

NC

AUDIO "R"
AUDIO "R"
AUDIO "L"

NOTE :

... etc. identifies each

pcb module.

AUDIO "D"
AUDIO "D"
AUDIO "G"

AUDIO
"BLEU"

AUDIO "G" MONO

"BLEU"

COMMUT. LENTE

"VERT"

"VERT"

"ROUGE"

COMMUT. RAPIDE

COMMUT. RAPIDE

VIDEO

VIDEO SYNCHRO
BLINDAGE PRISE

AUDIO "R"
AUDIO "R"
AUDIO "L"

AUDIO
"BLAU"

AUDIO "L" MONO

"BLAU"

AV

UMSCHALTUNG

"GRÜN"

"GRÜN"

"ROT"

AUSTASTUNG

AUSTASTUNG

VIDEO

VIDEO ODER

SYNCHRO

ABSCHIRMUNG
DES STECKERS

AUDIO "D"
AUDIO "D"

AUDIO "I"

AUDIO
"AZUL"

AUDIO "I" MONO

AZUL

"CONMUTACION

LENTA"

"VERDE"

"VERDE"

"ROJA"

"CONMUTACION

RAPIDA"

"CONMUTACION

RAPIDA"

VIDEO

VIDEO O SINCRO

BLINDAJE

DEL ENCHUFE

AUDIO "D"
AUDIO "D"
AUDIO "S"

AUDIO

"BLU"

AUDIO "S" MONO

BLU

"COMMUTAZIONE

LENTA"

"VERDE"

"VERDE"

"ROSSO"

"COMMUTAZIONE

RAPIDA"

"COMMUTAZIONE

RAPIDA"

VIDEO

VIDEO O SINCRO

INVOLUCRO METAL-

LICO DELLA PRESA

AUDIO "L" MONO

"BLUE"

"GREEN"

"GREEN"

"RED"

"ROUGE" "ROT" "ROJA""ROSSO""RED"

SLOW SWITCH

FAST SWITCH

VIDEO

VIDEO VIDEO VIDEOVIDEOVIDEO

PLUG SCREEN

BOX

VIDEO OR "SYNC"

FAST SWITCH

AUDIO
"BLUE"

: OUTPUT - SORTIE - AUSGANG - USCITA - SALIDA •

: EARTH - MASSE - MASSE - MASSA - MASA

MAIN

NOTE :

... etc. repères des

platines constituant l'appareil.

MAIN

NOTA :

... etc. marcas de las

placas que constituyen el
aparato.

MAIN

NOTA :

... ecc. sigla delle

piastre dell' apparecchio.

MAIN

HINWEIS :

... usw. Kennzeichnung
der Platinen, aus denen das
Gerät zusammengesetzt ist.

: INPUT - ENTRÉE - EINGANG - ENTRATA - ENTRADA •

Indicates critical safety components, and identical components should be used for replacement. Only then can the

operational safety be garanteed.
Le remplacement des éléments de sécurité (repérés avec le symbole ) par des composants non homologués selon la

Norme CEI 65 entraine la non-conformité de l'appareil. Dans ce cas, la responsabilité du fabricant n'est plus engagée.
Wenn Sicherheitsteile (mit dem Symbol gekennzeichnet) nicht durch Original - Ersatzteile ersetzt werden, erlischt die

Haftung des Herstellers.
La sostituzione dei componenti di sicurezza (evidenziati con il segno ) con componenti non omologati secondo la

norma CEI 65 comporta la non conformitá dell'apparecchio. In tal caso è "esclusa la responsabilità " del costruttore.
La sustitución de elementos de seguridad (marcados con el simbolo ) por componentes no homologados segun la

norma CEI 65, provoca la no conformidad del aparato. En ese caso, el fabricante cesa de ser responsable.

MEASUREMENT CONDITIONS - CONDITIONS DE MESURES - MESSBEDINGUNGEN

CONDIZIONI DI MISURA - CONDICIONES DE MEDIDAS

RICEVITORE :

In UHF, livello d'entrata 1 mV, monoscopio barre :

- PAL, norma G. bianco 100%.
Via SCART, livello d'entrata 1 Vpp, monoscopio barre :
Colore, Contrasto, Luminositá media, Suono minimo.

Programma selezionato PR 01.
Tensioni continue rilevate rispetto alla massa con un voltmetro digitale.

RECEIVER :
On UHF,input level : 1 mV, bar test pattern :

- PAL, I standard, 100% white.
Via the scart socket, input level : 1 Vpp, bar test pattern :
Colour, contrast and brightness at mid-position, sound at minimum.

Programme selected : PR 01.
DC voltages measured between the point and earth using a digital

voltmeter.

EMPFÄNGER :
Bei UHF Eingangspegel 1 mV, Farbbalken :

- PAL, Norm G, Weiss 100%.
Über die Scartbuchse : Eingangspegel 1 Vss, Farbbalken :
Farbe, Kontrast, Helligkeit in der Mitte des Bereichs, Ton auf Minimum.

Zugeordnetes Programm PR 01.
Gleichspannungen mit einem digitalen Voltmeter zur Masse gemessen.

RECEPTEUR :
En UHF, niveau d'entrée 1 mV mire de barres

- SECAM, Norm L, Blanc 100%.
Par la prise Péritélévision, niveau d'entrée 1 Vcc, mire de barres .
Couleur, contraste, lumière à mi-course, son minimum.

Programme affecté PR 01.
Tensions continues relevées par rapport à la masse avec un

voltmètre numérique.

RECEPTOR :
En UHF, nivel de entrada 1 mV, mira de barras :

- PAL, norma G, blanco 100%.
Por la toma Peritelevision, nivel de entrada 1 Vpp mira de barra.
Color, Contraste, luz a mitad de carrera, Sonido minimo.

Programa afectado PR 01.
Tensiones continuas marcadas en relacion a la masa con un voltimetro digital.

Do not disconnect modules when they are energized!
Repairs on power supply section are to be carried out only with isolating transformer.

Ne pas retirer les modules lorsqu' ils sont sous tension. N'effectuer les travaux de maintenance sur la partie reliée
au secteur (Switch Mode) qu'au travers d'un transformateur d'isolement.

Module nicht bei eingeschaltetem Gerät entfernen!
Servicearbeiten am Netzteil nur unter Verwendung eines Regeltrenntrafos durchführen.

Non scollegare le piastre quando sono alimentate!
Per le riparazioni sulla sezione alimentatore, utilizzare un trasformatore isolatore.

No desconectar los módulos cuando están activados. Las reparaciones en la sección de alimentación de energía
deben ser ejecutadas solamente con un transformador de separación.

First issue 03 / 01 3

Page Page

DISASSEMBLY

Removing the back panel . . . . . . . . . . . . . . . . . . . 4

Removing the terminal panels . . . . . . . . . . . . . . . 4

Removing the AUDIO and VIDEO modules . . . . . . 5

Removing the POWER module . . . . . . . . . . . . . . . 5

Removing the fan . . . . . . . . . . . . . . . . . . . . . . . . . 6

Removing the ANALOG module . . . . . . . . . . . . . . 6

WIRE LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DIAGNOSTIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

VIDEO TROUBLESHOOTING

No video screen display . . . . . . . . . . . . . . . . . . . .13

No RGB /PC screen display . . . . . . . . . . . . . . . . .14

No HD/DVD screen display . . . . . . . . . . . . . . . . . .15

No RGB signal . . . . . . . . . . . . . . . . . . . . . . . . . . .15

No NTSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

No PAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

No display ANALOG module analysis . . . . . . . . . 18

Synchonisation trouble . . . . . . . . . . . . . . . . . . . . .19

AUDIO TROUBLESHOOTING

No audio signal from SP output . . . . . . . . . . . . . .20

No audio signal from AUDIO output . . . . . . . . . .20

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Video level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Sub-brightness . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Sub-contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Video screen position . . . . . . . . . . . . . . . . . . . . . 24

RGB screen position . . . . . . . . . . . . . . . . . . . . . . 24

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

ADJUSTMENT LOCATION

ANALOG module

(42WS90E) . . . . . . . . . . . . . . . . . 25

ANALOG module (42WS90E2) . . . . . . . . . . . . . . . . . 26

VIDEO module . . . . . . . . . . . . . . . . . . . . . . . . . . 27

AUDIO module . . . . . . . . . . . . . . . . . . . . . . . . . . .27

POWER module . . . . . . . . . . . . . . . . . . . . . . . . . 28

BLOCK DIAGRAMS

I/O module (42WS90E) . . . . . . . . . . . . . . . . . . . . . . 29

ANALOG module

(42WS90E) . . . . . . . . . . . . . . . . . 30

ANALOG module (42WS90E2) . . . . . . . . . . . . . . . . 31

VIDEO module . . . . . . . . . . . . . . . . . . . . . . . . . . 32

AUDIO module . . . . . . . . . . . . . . . . . . . . . . . . . . 33

POWER module . . . . . . . . . . . . . . . . . . . . . . . . . 34

CONTENTS

DISASSEMBLING THE MODULES

2. Removing the terminal panels (S), (V), R TERM, L TERM, S-I/O and VIDEO I/O modules

4 First issue 03 /01

1. Removing the back panel

- Remove the 17 screws , the 8 screws and the screw ,

- Remove the back panel.

- Remove the 2 screws of the terminal panel (S) on the
left side of the set and remove the 2 screws of the
terminal panel (V) on the right side of the set,

- Remove the terminal panels (S) and (V),

- Pull out the S-I/O module and the VIDEO I/O module from
the terminal panels,

.

- Remove the 2 screws on the left side of the set and
take out the R-TERM module,

- Remove the 2 screws on the right side of the set and
take out the L-TERM module.

07

0605040302

01

BACK PANEL

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

01

02

02

02

02

02

02

02

02

03

VIDEO I/O MODULE

L TERM MODULE

TERMINAL PANEL (V)

TERMINAL BRACKET

SHIELD CASE (V-I/O) A

SHIELD CASE (S-I/O)

S-I/O MODULE

TERMINAL BRACKET

TERMINAL PANEL (S)

R TERM
MODULE

05

05

04

06

07

First issue 03 / 01 5

3. Removing the AUDIO and VIDEO modules

- Remove the 4 screws and take out AUDIO module,

- Remove the 4 screws and take out VIDEO module.

4. Removing the power module

- Remove the 6 screws and take out the power unit.

10

09

08

AUDIO MODULE

SHIELD CASE (AUD)

VIDEO MODULE

SHIELD CASE (VID)

08

08

08

08

09

09

09

09

POWER UNIT

10

10

10

10

10

10

5. Removing the bracket (fan)/DC fan

-

Remove the 7 screws , the 2 screws , and the screw ,

- Take out the bracket (fan),

- Remove the 16 screws and take out the DC fan from

6. Removing the shield case (ANA)A/ANALOG module

- Remove the 10 screws and take out the shield case
(ANA) A,

- Remove the 4 screws and take out the ANALOG
module.

the bracket (fan),

- Remove the 4 screws and take out the grand boards L and R

15

17

16

141312

11

DC FAN

DC FAN

BRACKET (FAN)

GRAND BOARD R

GRAND BOARD L

B

B

A

A

11

11

11

11

11

11

11

15

15

15

15

12

12

14

13

ANALOG MODULE

SHIELD CASE (ANA) A

(10 pcs.)

16

17

17

17

17

6 First issue 03 /01

First issue 03 / 01 7

WIRE LOCATION

After replacement of the modules refer to the below diagram to mount ferrites and connect the modules again.
Note: “RA” connectors are only fitted in 42WS90E2.

ferrite core : ZCAT2032 930 (code 351 571 10)

ESD-R-19 (code 351 571 20)

2

1

8 First issue 03 /01

DIAGNOSTIC

The power LED located on the front of the display is a bicolour LED wich indicates the operating status including the normal, standby
and three error detections

42WS90E-42WS90E2

No energization

of POWER unit

Is the power

LED lit ?

See page 9

Is the power LED

flashing green?

See page 10

Is the power LED

lighting green?

The power LED

is lighting red :

Stand-by mode

See page 12

Is the power LED

flashing red?

See page 11

Is the power

LED flashing green

and red?

See page 12

No

No

Yes

Yes

No

Yes

No

Yes

No

Yes

First issue 03 / 01 9

Power LED

unlit

No

No

Yes

Yes

No

Yes

No

Yes

No

Yes

Is the power plug correctly

connected to the wall outlet?

Rearrange the power plug

connection correctly.

Is there AC 100V behind

the fuses F1 and F2?

Fuses F1 and F2 have blown

out. Replace the fuses. If they

blow out again, the POWER

unit is out of order

Is there M+14V output at

Pin 1 of the PM connector?

Disconnect the PM and PQ

connectors from one after

another. If there is M+14V

output, the circuit beyond the

connec

tors is out of order.

If there is no

output, the

POWER unit is out of order.

Is there +5V output at Pin 2

of IC6805 (ANALOG module)?

Failure in the CTL module

Is there +5V output at Pin
5 of the PW connector?

Failure in +5V line. Check

the POWER module

Failure in the

POWER module

No

Yes

Failure in the

ANALOG module

Is there +5V output at Pin
3 of the PW connector?

42WS90E-42WS90E2

10 First issue 03 /01

No

The power LED

is flashing green

No

YesYes

Yes

No

Failure in the

ANALOG module

Failure in the
POWER unit

Is

0V observed at

pin 1 of pin 2 of
IC6553? IC6553?

Failure in fan's peripheral

area of the set

Failure in the

ANALOG module

Is 0V observed at Pin 4 of
IC6800 (ANALOG module)?

The power LED

is flashing green

No

Yes

Failure in the

ANALOG module

Is 0V observed at Pin 3 of
IC6800 (ANALOG module)?

No

Yes

Failure in fan's peripheral

area of the set

Failure in the

ANALOG module

Is 0V observed at Pin 2

or 5 of IC6807?

No

Yes

Yes

Is 0V observed at Pin 13

of the PM connector?

No

Yes

No

Yes

Is FL6074 normal?

Failure in the

POWER module

Is 0V observed at Pin 9

of IC6807 ?

Is 12V observed at Pin 11

of PM connector?

Failure in the

ANALOG module

Failure in the

POWER module

42WS90E

42WS90E2

First issue 03 / 01 11

The power LED

is flashing red

No

Yes

Yes

No

Failure in the

ANALOG module

Is

0V observed at

pin 5

of IC6808

(ANALOG module)

?

Failure in the

ANALOG module

Is 0V observed at Pin 57

of IC6800 (ANALOG module)?

Failure in the
POWER unit

The power LED

is flashing red

No

Yes

Yes

No

Failure in the

ANALOG module

Is

0V observed at

pin 13

of IC6808

(ANALOG module)

?

Failure in the

ANALOG module

Is 0V observed at Pin 4

of IC6800 (ANALOG module)?

Failure in the
POWER unit

42WS90E

42WS90E2