THOMSON 42WS90E User manual

SERVICE MANUAL
DOCUMENTATION TECHNIQUE
TECHNISCHE DOKUMENTATION
DOCUMENTAZIONE TECNICA
DOCUMENTACION TECNICA
No copying, translation, modification on other use authorized. All rights reserved worldwide. • Tous droits de reproduction, de traduction, d'adaptation et d'exécution réservés pour tous les pays. • Sämtliche Urheberrechte an diesen Texten und Zeichnungen stehen uns zu. Nachdrucke,
Vervielfältigungen-auchauszugsweise-nurmitunserervorherigenZustimmungzulässig.AlleRechtevorbehalten.•Idirittidiriproduzione,ditraduzione,eesecuzionesonoriservatiper tutti i paesi. • Derechos de reproduccion, de traduccion, de adaptacion y de ejecucionreservados para todos los paises.
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
910
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
4First 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
06
05
04
03
02
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
14
13
12
11
DC FAN
DC FAN
BRACKET (FAN)
GRAND BOARD R
GRAND BOARD L
B
B
AA
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
6First 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

8First 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

12 First issue 03 /01
The power LED is fla-
shing red and green
No
Yes
Failure in the
ANALOG module
Is 0V observed at Pin 14 of
IC6800 (ANALOG module)?
Failure in the
PDP module
In the case of green and red flashing, the power supply
cannot be reset with the OFF/ON operation at the mains
power supply, remote control, and wall outlet.
For the alarm reset, keep pressing the input changeover key
of the main unit and move the mains power supply to the
"ON" position at the main unit. While doing so, it is
necessary to keep pressing the input changeover key of the
main unit for more than two seconds.In the case of green
and red flashing, the power supply cannot be reset with the
OFF/ON operation at the mains power supply, remote
control, and wall outlet.
The power LED
is lighting green
No
Yes
Yes
No
Failure in the
ANALOG module
Is "H" maintained at Pin
7 of the PH connector?
Failure in the peripheral
area of PDP module
Is "H" maintained at Pins 2
and 3 of the PM connector?
Failure in the PDP
module and the
POWER unit
No
Yes
Is power supply available
when SW1* is turned OFF?
* POWER unit: HV system is OFF
Disconnect the PV, PQ, PN
and PA connectors one after
another (others kept connected)
and confirm that the power
supply is available. If it is not
available, the POWER unit is
out of order. Else, the circuit
of the disconnected connector
is out of order.
42WS90E-42WS90E2
42WS90E-42WS90E2

First issue 03 / 01 13
VIDEO TROUBLESHOOTING
No
No video
screen display
No
Yes
Enter a color bar
signal input
No
Yes
Failure in the
VIDEO I/O module
No
Yes Yes
No
Yes
No
Yes
Failure in signal source
Failure in the
ANALOG module
See page 18
See page 18
Is there on-screen
display of VIDEO?
Is there a video signal at
TP1001 (VIDEO I/O module)?
With the signal line discon-
nected,
is there a video signal
at the signal line terminal?
With the YC connector
disconnected, is there a
video signal at TP1025?
Is there a rectangular wave-
form signal of 5Vp-p at pins 2
and 3 of the IC connector?
No
Yes
Failure in the
VIDEO I/O module
Is there a Y signal input at
pins 1 and 9 of IC5006?
Is there a video signal at
Pins 1 , 3 and 5 of the VD
connector in VIDEO module?
Failure in the
VIDEO module
42WS90E-42WS90E2

14 First issue 03 /01
No
No RGB / PC
screen display
No
Yes
No
Yes
Failure in the
VIDEO I/O module
No
Yes Yes
No
Yes
No
Yes
Failure in signal line
Failure in the
ANALOG module
See page 18
See page 18
Is there on-screen
display of "PC"?
Is the LED litting green?
Is there a video signal at
TP1007, TP1008, and
TP1009?
Failure in the
ANALOG module
Failure in signal line
Enter a VGA or SVGA
color bar signal input.
With the signal line discon-
nected, is there a video signal
at the signal line terminal?
Is there horizontal sync at
Pin 13 of M1006 socket, or
vertical sync at Pin 14 ?
Is there horizontal sync at
Pin 8 of "PC" connector,
or vertical sync at Pin 10 ?
42WS90E-42WS90E2

First issue 03 / 01 15
No
No HD / DVD
screen display
No
Yes
Enter a color bar
signal input
Failure in the
ANALOG module
No
Yes Yes
Failure in signal source
See page 18
See page 18
Is there on-screen
display of "HD" or "DVD"?
Is there a video signal at
TP1004 (VIDEO I/O module)?
With the signal line discon-
nected, is there a video signal
at the signal line terminal?
No RGB
signal
No
Yes
Failure in the
VIDEO module
Failure in the
ANALOG module
Is RGB signal available at Pins
1 , 3 , 5 of the VD connector?
42WS90E-42WS90E2
42WS90E-42WS90E2

16 First issue 03 /01
No video in
NTSC mode
No
Yes
No
Yes Failure in the
VIDEO module
No
Yes
A
Is Y signal available
at TP9003?
Is there a video signal
at TP9007?
Failure in the
VIDEO I/O module
No NTSC color
generation
No
Yes
No
Yes Failure in the
VIDEO module
No
Yes
A
Is C signal available
at TP9004?
Is there a video signal at Pin
1 of the YC connector?
Is C signal available
at Pin 13 of IC5008?
Is C signal available
at Pin 14 of IC5006?
42WS90E-42WS90E2

First issue 03 / 01 17
No video in
PAL mode
No
Yes
No
Yes Failure in the
VIDEO module
No
Yes
B
Is Y signal available
at TP5004?
Is there a video signal
at TP5030?
Failure in the
VIDEO I/O module
No PAL color
generation
No
Yes
No
Yes Failure in the
VIDEO module
No
Yes
B
Is C signal available
at TP9005?
Is there a video signal at Pin
1 of the YC connector?
Is C signal available
at Pin 13 of ICC5008?
Is C signal available
at Pin 16 of ICC5006?
42WS90E-42WS90E2

18 First issue 03 /01
No display, ANALOG
module analysis
No
Yes
No
Yes
No
Yes
Failure in AD cable
No Yes
No
Yes
No
Yes
No
Yes
Failure in the
ANALOG module
No
Yes
End
Is there a video signal
at TP6139, TP6140
and TP6141?
Is there a signal of 5Vp-p at Pins
1~ 47 of the AD connector
(odd-numbers only)?
Is there a clock signal at Pin
49 of the AD connector?
Is normal display available
after replacement of
ANALOG module?
Is the link of AD
connector correct?
Make correct connections
Are the PD and PH con-
nectors correctly connected?
Is there a signal of 5Vp-p at
Pin 51 (H-SYNC) and Pin 53
(V-SYNC) of the AD connector
and the "L" signal at Pin 76?
Refer to No energization
of POWER circuit.
Failure in the PDP module
Are there normal outputs of
180V, 80V , and D+5V in
the POWER unit?
42WS90E-42WS90E2

First issue 03 / 01 19
Synchronisation
trouble
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Failure in the
ANALOG module
Failure in the
VIDEO I/O module
No
Yes
Is it a VIDEO input?
NoYes
Yes
No
No
Yes
Is there a video signal at TP1025?
Is the link of AD
connector correct?
Failure in the AD cable
Failure in the PDP module
Replace ANALOG module
Enter a color bar
signal input
Is normal display available
after replacement of ANALOG
module?
Is it a HD/DVD input? Is there a synchro. signal at Pins
8 and 10 of the PC connector?
Is there a video signal at Pin
2 of the HD connector?
Is there a synchro. signal at Pins
7 and 9 of the VD connector?
Are there a clock signal syn-
chronized with the input signal,
a horizontal synchro. signal
and a vertical synchro. signal, res-
pectively at Pins 49 , 51 and
53 of the AD connector?
42WS90E-42WS90E2

20 First issue 03 /01
AUDIO TROUBLESHOOTING
No audio signal
from SP output
Yes
Yes
No
No
Failure in the
AUDIO module
Is audio signal available at pins
1 , 3 , 4 , 6 , 8 , 10 of IC4001?
Failure in the
SOUND I/O module
Is audio signal available at
at TP3001 and TP3002?
Check each phono
pin output
No audio signal
from AUDIO out
No
Yes
Yes
No
Check the Sub-woofer
Is audio signal available at
at TP4006 and TP4007?
Failure in the
SOUND I/O module
C
C
Is audio signal available at Pins
1 and 3 of POMS connector?
42WS90E-42WS90E2
42WS90E-42WS90E2