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Panasonic TX-28LD90F Service Manual
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Panasonic TX-28LD90F Service Manual

Panasonic TX-28LD90F Service Manual

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SPECIFICATIONS
(Information in brackets { } refer to TX-25LD90F)
Power Source:
Power Consumption:
Aerial Impedance:
Standby Power Consumption:
Receiving System:
Receiving Channels:
VHF E2-E12
VHF A-H (ITALY)
VHF R3-R5
UHF E21-E69
CATV S1-S10 (M1-M10)
CATV S21-S41 (HYPERBAND)
Intermediate Frequency:
Video
Sound
Colour
Video/Audio Terminals:
AUDIO MONITOR OUT
AV1 IN
AV1 OUT
AV2 IN
AV2 OUT
AV3 IN
High Voltage:
Picture Tube:
Audio Output:
(Music Power)
Headphones:
Accessories supplied:
Dimensions:
Height:
Width:
Depth:
Net Weight:
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
NOTE:
This Service Manual should be used in conjunction with the
EURO5 technical guide.
220-240Va.c., 50Hz
140W {130W}
75Ω unbalanced, Coaxial Type
1,9W
PAL-I, B/G, H, D/K, PAL-525/60
SECAM L/L', B/G, D/K
M.NTSC
NTSC (AV only)
VHF H1-H2 (ITALY)
VHF R1-R2
VHF R6-R12
CATV (S01-S05)
CATV S11-S20 (U1-U10)
38,9MHz, 34MHz
32,9MHz, 33,4MHz, 33,16MHz
32,4MHz, 40,4MHz, 33,05MHz
32,66MHz
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Audio (RCAx2)
500mV rms1kΩ
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 10kΩ
RGB (21 pin)
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 1kΩ
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 10kΩ
S-Video IN
Y: 1V p-p 75Ω
(21 pin)
C: 0,3V p-p 75Ω
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 1kΩ
Selectable Output (21 pin)
S-Video IN
Y: 1V p-p 75Ω
(4-pin)
C: 0,3V p-p 75Ω
Audio (RCAx2)
500mV rms10kΩ
Video (RCAx1)
1V p-p 75Ω
28,5kV ±1kV
A66ECF61X81
{A59ECF50X81}
2 x 20W
Left/Right
8Ω Impedance
8Ω Impedance
Remote Control
2 x R6 (UM3) Batteries
596,5mm
{550,5mm}
778mm
{730mm}
481mm
{478,5mm}
33kg
{28kg}
Colour Television
EURO - 5 Chassis
CARACTÉRISTIQUES
(Les informations entre parenthèses { } concernent le TX-25LD90F)
Alimentation:
Consommation:
Impédance d'antenne:
Standby Consommation:
Systéme de réception:
Canaux de réception:
VHF E2-E12
VHF A-H (ITALY)
VHF R3-R5
UHF E21-E69
CATV S1-S10 (M1-M10)
CATV S21-S41 (HYPERBAND)
Fréquency Intermédiaire:
Video
Sound
Couleur
Les bornes vidéo/audio:
SORTIE AUDIO MONITOR
Entrée AV1 (21 brioches)
Sorties AV1 (21 brioches)
Entrée AV2 (21 brioches)
Sorties AV2 (21 brioches)
Entrée AV3
Tension d'anode:
Tube image:
Sortie Audio:
(Music Power)
Casque d'écoute:
Accessories fournis:
Dimensions:
Hauteur:
Largeur:
Profondeur:
Poids (NET):
Les caractéristiques techniques sont susceptibles de modification sans
Préavis.
Le poids et les dimensions indiqués sont approximatifs.
ORDER No. SM-98067
TX-28LD90F
TX-25LD90F
220-240V a.c., 50Hz
140W {130W}
75Ω asymétrique sur prise coaxiale
1,9W
PAL-I, B/G, H, D/K, PAL-525/60
SECAM L/L', B/G, D/K
M.NTSC
NTSC (Entrée AV seulement)
VHF H1-H2 (ITALY)
VHF R1-R2
VHF R6-R12
CATV (S01-S05)
CATV S11-S20 (U1-U10)
38,9MHz, 34MHz
32,9MHz, 33,4MHz, 33,16MHz
32,4MHz, 40,4MHz, 33,05MHz
32,66MHz
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Audio (RCAx2)
500mV rms1kΩ
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 10kΩ
RGB (21 pin)
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 1kΩ
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 10kΩ
S-Video IN
Y: 1V p-p 75Ω
(21-pin)
C: 0,3V p-p 75Ω
Video (21 pin)
1V p-p 75Ω
Audio (21 pin)
500mV rms 1kΩ
Être sélectionnée
S-Video IN
Y: 1V p-p 75Ω
(4-pin)
C: 0,3V p-p 75Ω
Audio (RCAx2)
500mV rms10kΩ
Video (RCAx1)
1V p-p 75Ω
28,5kV ±1kV
A66ECF61X81
{A59ECF50X81}
2 x 20W
Gauche/Droite
8Ω Impédance
8Ω Impédance
Télécomande
R6 (UM3) x 2 Piles
596,5mm
{550,5mm}
778mm
{730mm}
481mm
{478,5mm}
33kg
{28kg}

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Summary of Contents for Panasonic TX-28LD90F

  • Page 1 ORDER No. SM-98067 Colour Television TX-28LD90F TX-25LD90F EURO - 5 Chassis SPECIFICATIONS CARACTÉRISTIQUES (Information in brackets { } refer to TX-25LD90F) (Les informations entre parenthèses { } concernent le TX-25LD90F) Power Source: 220-240Va.c., 50Hz Alimentation: 220-240V a.c., 50Hz Power Consumption:...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS PRECAUTIONS DE SECURITE .......... 2 SAFETY PRECAUTIONS ............ 2 SERVICE HINTS ..............4 SUGGESTIONS DE DEPANNAGE ........4 SERVICE POSITION ............5 POSITION SERVICE ............5 SELF CHECK ..............6 AUTO TEST ................ 6 ADJUSTMENT PROCEDURE ..........7 REGLAGES.................
  • Page 3 LEAKAGE CURRENT HOT CHECK VERIFICATION A CHAUD DU COURANT DE FUITE Plug the a.c. cord directly into the a.c. outlet. Do not Brancher le cordon secteur directement à une prise use an isolation transformer for this check. secteur. Ne pas utiliser de transformateur d'isolation Connect a 2kΩ...

  • Page 4: Service Hints

    SERVICE HINTS SUGGESTIONS DE DEPANNAGE HOW TO REMOVE THE REAR COVER COMMENT RETIRER LE PENNEAU ARRIÈRE Remove the 11 screws (A) as shown in Fig.2. 1. Retirer les 11 vis (A) comme sur la Fig.2. Fig.2. LOCATION OF CONTROLS EMPLACEMENT DES COMMANDES Y BOARD FOCUS CONCENTRATION...

  • Page 5: Service Position

    How to move the chassis into Comment placer le chassis en position Service position Service 1. Soutenir et soulever l'arrière du chassis et tirer 1. Hold and lift the rear of the chassis and gently pull the doucement le chassis vers soi, comme montré sur la chassis toward you, as shown in Fig.4.

  • Page 6: Self Check

    SELF CHECK AUTO TEST Self-check is used to automatically check the bus L'auto test est utilísé pour vérifier les BUS et les lines and hexadecimal code of the TV set. codes Hexadécimaux du TV . Pour renter dans le mode Auto Test presser le To get into the Self-Check mode press the down bouton STATUS de la télécommande et...

  • Page 7: Adjustment Procedure

    ADJUSTMENT PROCEDURE Item/Preparation Adjustments Voltage Confirmation Set-Up 1. Confirm the following voltages. D-Board E-Board Receive a Greyscale signal. PIN5 147V ± 3V E19-PIN8 ± 0,5V Set the controls:- PIN5 5V ± 0,3V IC3801-PIN3 9V ± 0,5V PIN1 40V ± 4V E22-PIN8 ±...

  • Page 8: Waveform Pattern Table

    WAVEFORM PATTERN TABLE TABLEAU DES OSCILLOGRAMMES NOTE: All waveforms have been taken using a standard colour bar pattern. REMARQUE: Tous les oscillogrammes ont été relevés avec une mire de barres couleur standard. VFLB Vert Drive Vert Out IC451 Pin 5 IC451 Pin 2 IC601 Pin 1 8.6mS...

  • Page 9: Alignment Settings

    ALIGNMENT SETTINGS: (The figures below are nominal and used for representative purposes only.) 1. Set the Bass to maximum position, set the Treble to minimum position, press the down button (- / v) on the customer controls at the front of the TV and at the same time press the INDEX button on the remote control, this will place the TV into the Service Mode.

  • Page 10: Reglages

    REGLAGES (Les figures ci-dessous sont fictives et utilisées uniquement à des fins représentatives) 1. Régler par la télécommande le niveau de GRAVE au maximum, AIGU au minimum. Appuyer simultanément sur le bouton (-/v) en face avant du TV et le bouton INDEX de la télécommande. Ces actions positionnent le TV en Mode Service.

  • Page 11: Block Diagrams

    9,'(2 %/2&. ',$*5$0 6<1237,48( 9,'(2...
  • Page 12 $8',2 %/2&. ',$*5$0 6<1237,48( $8',2...
  • Page 13 &21752/ %/2&. ',$*5$0 6<1237,48( '( &200$1'(...
  • Page 14 32:(5 6833/< '()/(&7,21 %/2&. ',$*5$0 6<1237,48( $/,0(17$7,21...

  • Page 15: Parts Location

    PARTS LOCATION EMPLACEMENT DES PIÈCES NOTE: REMARQUE The numbers on the exploded view below Les numéros sur les pièces mécaniques refer to the mechanical section of the indiquent les No. de réf. de la liste des pieces Replacement Parts List. de rechange.

  • Page 16: Replacement Parts List

    EASG15S506A2 SPEAKER IC1103 M5M51008BP SRAM ENG29505G TUNER IC1104 27C2001-H07 EPROM * EUR511211 REMOTE CONTROL IC1105 MN1381-T(TA) RESET TBM8E1728 PANASONIC BADGE IC1106 MN1381-R(TA) RESET TBX8E050 POWER BUTTON IC1502 VPC3215CB4TP TKP8E1223 DOOR LID IC1503 MB87F1720 TKP8E1262 REAR AV PANEL IC1504 FJB007S TMX8E033-1...
  • Page 17 Cct Ref Parts Number Description Cct Ref Parts Number Description D502 1SS254T-77 DIODE D1107 MA165TA5 DIODE D503 EU02 DIODE D1109 MA165TA5 DIODE D504 EU02 DIODE D1110 MA165TA5 DIODE D505 ERA81004V3 DIODE D1112 MA165TA5 DIODE D556 AU02V0 DIODE D1501 MA151ATX DIODE D559 MTZJT-7736A DIODE...
  • Page 18 Cct Ref Parts Number Description Cct Ref Parts Number Description Q1106 BC847B TRANSISTOR L005 TLT100K991R COIL Q1107 BC847B TRANSISTOR L007 EXCELDR35V COIL Q1108 BC847B TRANSISTOR L008 ELJFC2R2KF COIL Q1109 BC847B TRANSISTOR L009 ELJFC2R2KF COIL Q1110 BC847B TRANSISTOR L251 EXCELSA35T COIL Q1111 BC847B TRANSISTOR...
  • Page 19 Cct Ref Parts Number Description Cct Ref Parts Number Description L1532 EXCELDR35V COIL JA16 ERJ8GEY0R00 S.M.CARB .125W L1533 EXCELDR35V COIL JA18 ERJ6GEY0R00 S.M.CARB 0.1W L1534 EXCELDR35V COIL JA19 ERJ6GEY0R00 S.M.CARB 0.1W L1535 EXCELDR35V COIL JA20 ERJ8GEY0R00 S.M.CARB .125W L1536 EXCELDR35V COIL JA21 ERJ6GEY0R00...
  • Page 20 Cct Ref Parts Number Description Cct Ref Parts Number Description R109 ERJ6GEYJ103 S.M.CARB 0.1W R420 ERJ6GEYJ563 S.M.CARB 0.1W R110 ERJ6GEYJ222 S.M.CARB 0.1W R421 ERJ6GEYJ224 S.M.CARB 0.1W 220K R111 ERJ6GEYJ331 S.M.CARB 0.1W R441 ERJ6GEYJ393 S.M.CARB 0.1W R251 ERJ6GEYJ331 S.M.CARB 0.1W R442 ERJ6GEYJ123 S.M.CARB 0.1W...
  • Page 21 Cct Ref Parts Number Description Cct Ref Parts Number Description R657 ERJ6GEYJ750 S.M.CARB 0.1W R886 ERX3SJR56 METAL R658 ERJ6ENF2212 S.M. CAR 0.1W R888 ERDS1TJ393 CARBON 0.5W R663 ERJ6GEYJ334 S.M.CARB 0.1W 330K R889 ERD25TJ392 CARBON 0.25W R664 ERJ6GEYJ562 S.M.CARB 0.1W R891 ERD25TJ103 CARBON 0.25W...
  • Page 22 Cct Ref Parts Number Description Cct Ref Parts Number Description R1122 ERJ6GEYJ472 S.M.CARB 0.1W R1200 ERJ6GEYJ472 S.M.CARB 0.1W R1123 ERJ6GEYJ823 S.M.CARB 0.1W R1237 ERJ6GEY0R00 S.M.CARB 0.1W R1124 ERJ6GEYJ101 S.M.CARB 0.1W R1238 ERJ6GEYJ102 S.M.CARB 0.1W R1125 ERJ6GEYJ101 S.M.CARB 0.1W R1239 ERJ6GEYJ560 S.M.CARB 0.1W R1126...
  • Page 23 Cct Ref Parts Number Description Cct Ref Parts Number Description R1570 ERJ6ENF2701 S.M.CARB 0.1W R1643 ERJ6GEYJ473 S.M.CARB 0.1W R1571 ERJ6GEYJ103 S.M.CARB 0.1W R1644 ERJ6GEYJ183 S.M.CARB 0.1W R1572 ERJ6GEYJ103 S.M.CARB 0.1W R1645 ERJ6GEYJ473 S.M.CARB 0.1W R1573 ERJ6ENF1500 S.M. CAR 0.1W R1646 ERJ6GEYJ183 S.M.CARB 0.1W...
  • Page 24 Cct Ref Parts Number Description Cct Ref Parts Number Description R2320 ERJ6GEYJ101 S.M.CARB 0.1W R3048 ERJ6GEYJ102 S.M.CARB 0.1W R2321 ERJ6GEYJ101 S.M.CARB 0.1W R3053 ERJ6GEYJ220 S.M.CARB 0.1W R2351 ERJ6GEYJ102 S.M.CARB 0.1W R3057 ERJ6GEYJ151 S.M.CARB 0.1W R2352 ERJ6GEYJ102 S.M.CARB 0.1W R3058 ERJ6GEYJ104 S.M.CARB 0.1W 100K...
  • Page 25 Cct Ref Parts Number Description Cct Ref Parts Number Description 220nF R3424 ERJ6GEYJ101 S.M.CARB 0.1W C271 ECQM1H224J FILM R3425 ERJ6GEYJ221 S.M.CARB 0.1W C277 ECUV1H102JCX S.M. CAP R3426 ERJ6GEYJ680 S.M.CARB 0.1W C278 ECUV1H102JCX S.M. CAP 220nF R3427 ERJ6GEYJ102 S.M.CARB 0.1W C352 ECUV1H224ZFX S.M.
  • Page 26 Cct Ref Parts Number Description Cct Ref Parts Number Description 100nF 470pF C613 ECUV1H104ZFX S.M. CAP C859 ECKC2H471J CERAMIC 500V 100nF 220µF C614 ECUV1H104ZFX S.M. CAP C861 ECOS2EA221AB ELECT 250V 100nF 220µF C615 ECJ2VB1C104K ELECT 350V C863 ECA1EM332E ELECT 100nF 220µF C616 ECQM1H104J...
  • Page 27 Cct Ref Parts Number Description Cct Ref Parts Number Description 100nF 100nF C1511 ECUV1H104ZFX S.M. CAP C1581 ECUV1H104ZFX S.M. CAP 30pF 100nF C1512 ECUV1H030CCX S.M. CAP C1582 ECUV1H104ZFX S.M. CAP 10µF 100nF C1513 ECA1HM100GB ELECT C1583 ECUV1H104ZFX S.M. CAP 100nF 100nF C1514 ECUV1H104ZFX...
  • Page 28 Cct Ref Parts Number Description Cct Ref Parts Number Description 100nF 220pF C1653 ECUV1H104ZFX S.M. CAP C2128 ECUV1H221JCX S.M. CAP 100nF 10µF C1654 ECUV1H104ZFX S.M. CAP C2129 ECA1CM100GB ELECT 47µF 220pF C1655 ECA1VM470B ELECT C2130 ECUV1H221JCX S.M. CAP 100nF 330nF C1656 ECUV1H104ZFX S.M.
  • Page 29 COIL C3427 ECUV1H102JCX S.M. CAP RESISTORS C3428 ECEA1HKA4R7 ELECT R419 ERG3FJ471 METAL C3429 ECEA1CKA220 ELECT C3430 ECEA1HKA4R7 ELECT DIFFERENCES FOR MODEL TX-28LD90F 47µF C3431 ECEA1CN470 ELECT 100nF C3432 ECUV1H104ZFX S.M. CAP 220µF C3433 ECA1CM221GB ELECT MECHANICAL PARTS 560pF C3460 ECUV1H561JCX S.M.
  • Page 30 Cct Ref Parts Number Description Cct Ref Parts Number Description RESISTORS R419 ERG3FJ151 METAL...
  • Page 31 NOTES...

  • Page 32: Schematic Diagrams

    SCHEMATIC DIAGRAMS FOR MODELS SCHEMA TECHNIQUE POUR MODELE TX-28LD90F TX-28LD90F TX-25LD90F TX-25LD90F (EURO-5 CHASSIS) (EURO-5 CHASSIS) IMPORTANT SAFETY NOTICE REMARQUE IMPORTANTE POUR LA SÉCURITÉ Components identified by mark have special Les éléments portant la marque possèdent characteristics important for safety. When replacing any of caractéristiques...

  • Page 40: Vue Du Circuit Imprimé

    CONDUCTOR VIEWS VUE DU CIRCUIT IMPRIMÉ E - BOARD TNPH0176 TRAN’S DIODE’S Q101 D001 D2364 A6 Q103 D002 D3005 B1 Q104 D252 D3006 B2 Q251 D253 D3008 B4 Q252 D254 D3009 A3 Q253 D255 D3010 A3 Q254 D256 D3011 B1 Q281 D281 D3803 A5...
  • Page 41 Y - BOARD TNPA1353 TRAN’S Q901 Q902 Q903 Q904 Q906 Q908 Q909 Q3351 A2 Q3352 A2 DIODE’S D351 D352 D361 D362 D371 D372 D373 D374 D375 D387 D901 D902 D903 D910 D911 D3351 A2 D3352 A3 D3353 A1 D3354 C3 T.P.’S TPY1 TPY2...
  • Page 42 D - BOARD TNPA1014 DIODE’S TRAN’S D503 Q502 D504 Q552 D505 Q553 D551 Q554 D556 Q701 D559 Q801 D560 Q803 D561 Q804 D563 Q845 D565 Q846 D566 Q847 D571 Q848 D575 Q849 D701 Q850 D803 Q852 D807 Q853 D808 Q854 D809 D810 I.C.’S...
  • Page 43 H - BOARD TNPA1047 TRAN’S Q2401 A2 Q2407 A3 Q2408 A3 Q2409 A3 Q2410 A3 Q2411 A3 Q2412 A3 Q3401 B1 Q3402 C1 Q3403 B1 Q3404 C1 Q3405 C3 Q3406 C3 DIODE’S D2401 A2 D2403 A3 D2404 A3 D2405 A3 D2406 A3 D2407 A3 D2408 A3...
  • Page 44 F - BOARD TNPA1068 TRAN’S Q1663 B2 Q1664 B2 Q1665 B2 Q1666 C1 Q1667 C1 I.C.’S IC1502 B3 IC1503 C3 IC1504 D1 IC1505 D2 IC1506 C2 IC1509 C1 IC1510 C1...
  • Page 45 F - BOARD TNPA1068 TRAN’S Q1501 D3 Q1502 C3 Q1503 B2 Q1504 C1 Q1505 C1 Q1506 C1 Q1507 C1 Q1508 C1 Q1509 C1 Q1510 D1 Q1511 D1 Q1519 D1 Q1660 C2 Q1661 C2 Q1662 C2 I.C.’S IC1507 B2...
  • Page 46 N - BOARD TNPA1072 TRAN’S Q1081 A3 DIODE’S D1081 B3 I.C.’S IC1081 B2...

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