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Panasonic TX-28PB50D Service Manual
Panasonic TX-28PB50D Service Manual

Panasonic TX-28PB50D Service Manual

Euro-7 chassis
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SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
145W (28") , 149W (32") , 175W (36")
Stand-by Power
Consumption:
2.8W
Aerial Impedance:
75Ω unbalanced, Coaxial Type
Receiving System:
PAL I, B/G, H, D/K, PAL-525/60
SECAM L/L', B/G, D/K
M.NTSC
NTSC (AV only)
Receiving Channels:
VHF E2-E12
VHF H1-H2 (ITALY)
VHF A-H (ITALY)
VHF R1-R2
VHF R3-R5
VHF R6-R12
UHF E21-E69
CATV (S01-S05)
CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
Intermediate Frequency:
Video/Audio
Video
38,9MHz, 34MHz
Audio
32,9MHz, 33,16MHz, 33,4MHz
40,4MHz, 32,4MHz (A2 STEREO)
33,05MHz, 34,05MHz (NICAM)
32,66MHz, 32,4MHz (CZECH STEREO)
Colour
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Terminals:
AV1 IN
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 10kΩ
RGB (21 pin)
AV1 OUT
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 1kΩ
AV2 IN
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 10kΩ
S-Video IN
(21-pin)
AV2 OUT
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 1kΩ
Selectable output (21 pin)
All manuals and user guides at all-guides.com
Y: 1V p-p 75Ω
C: 0.3V p-p 75Ω
Colour Television
TX-28/32/36PB50D
TX-28/32/36PB50F
TX-32/36PB50F/P
EURO-7 Chassis
AV3 IN
S-Video IN
(4-pin)
Audio (RCAx2) 500mV rms 1Video
Video (RCAx2) 1V p-p 75Ω
AV4 IN
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 10kΩ
S-Video IN
(21-pin)
RGB (21 pin)
AV4 OUT
Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 1kΩ
30.5kV ± 1kV (28") , 32kV ± 1Kv (32/36")
High Voltage:
Picture Tube:
W66EKT10X71
W76EKW10X72
W86LPX955X07
Audio Output:
Front Left/Right 2 x 20W
(Music Power)
8Ω Impedance
Digital Audio Input
Coaxial / Optical
Headphones:
8Ω Impedance
3.5mm
Accessories
supplied :
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
28"
Height:
509mm
Width:
763mm
Depth:
512mm
Net weight:
45kg
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
NOTE: This Service Manual should be used in conjunction with
the EURO-7 Technical guide.
ORDER No. SM-01021
Y: 1V p-p 75Ω
C: 0.3V p-p 75Ω
Y: 1V p-p 75Ω
C: 0.3V p-p 75Ω
66cm (28")
76cm (32")
86cm (36")
32"
36"
558mm
623mm
850mm
950mm
549mm
582mm
58.5kg
79.5kg

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Summary of Contents for Panasonic TX-28PB50D

  • Page 1 All manuals and user guides at all-guides.com ORDER No. SM-01021 Colour Television TX-28/32/36PB50D TX-28/32/36PB50F TX-32/36PB50F/P EURO-7 Chassis SPECIFICATIONS Power Source: 220-240V a.c., 50Hz AV3 IN S-Video IN Y: 1V p-p 75Ω Power Consumption: 145W (28”) , 149W (32”) , 175W (36”) (4-pin) C: 0.3V p-p 75Ω...
  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com CONTENTS SAFETY PRECAUTIONS................................2 SERVICE HINTS ..................................3 ADJUSTMENT PROCEDURE AND FACTORY SETTINGS .....................4 WAVEFORM PATTERN TABLE ...............................5 ALIGNMENT SETTINGS................................6 BLOCK DIAGRAMS ..................................7 PARTS LOCATION .................................12 REPLACEMENT PARTS LIST ..............................13 SCHEMATIC DIAGRAMS ...............................44 CONDUCTOR VIEWS................................55 SAFETY PRECAUTIONS GENERAL GUIDE LINES It is advisable to insert an isolation transformer in the...
  • Page 3: Service Hints

    All manuals and user guides at all-guides.com SERVICE HINTS How to remove the rear cover 1. Remove the 10 screws as shown in Fig.2. SCREWS SCREWS Fig.2. LOCATION OF CONTROLS DP-Board G-Board DG-Board L-Board DF-Board Focus L-Board H-Board Screen U-Board Z-Board HA-Board A-Board...
  • Page 4 All manuals and user guides at all-guides.com HOW TO MOVE THE CHASSIS INTO SERVICE POSITION Remove the 3 screws (B) and (C) shown in Fig.5. / Fig.6., and remove the 2 speakers from the cabinet. Affix the support strap supplied in the service pack (TZS1EK002) using a back cover screw, into the top right-hand cabinet rib (A) shown in Fig.4.
  • Page 5 All manuals and user guides at all-guides.com ADJUSTMENT PROCEDURE Item / Preparation Adjustment/Confirmation Confirm the following voltages. +B SET-UP Receive a Window pattern. A - Board Set the controls :- A1 Pin2 ± 0.5V IC1252 Pin2 2.5 ± 0.25V A1 Pin12 ±...
  • Page 6: Waveform Pattern Table

    All manuals and user guides at all-guides.com WAVEFORM PATTERN TABLE Note: All waveforms have been taken using a standard colour bar pattern. Video Out Luminance In Vert Drive IC3001 Pin 56 IC1315 Pin 37 A44 Pin 24 10mS 64µS 32µS VFLB H - Drive Vert Out...
  • Page 7: Alignment Settings

    All manuals and user guides at all-guides.com ALIGNMENT SETTINGS (The figures below are nominal and used for representative purposes only.) 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.
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  • Page 13: Parts Location

    All manuals and user guides at all-guides.com PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List. DF BOARD ONLY USED ON 32” & 36” MODELS.
  • Page 14 All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST Important Safety Notice Components Identified by mark have special characteristics important for safety. * When replacing any of these components, use only manufacturers specified parts. In case of ordering these spare parts, please always add the complete Model-Type number to your order.
  • Page 15 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description IC2528 M5222FP-E2 DUAL VCA (AMPLIFIER) D591 MA165TA5 DIODE IC2529 M5222FP-E2 DUAL VCA (AMPLIFIER) D592 MA4104 DIODE IC2705 PQ1CG21H2RZ REGULATOR D593 ERA15-02V3 DIODE IC2706 PQ1CG21H2RZ REGULATOR D594...
  • Page 16 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description D2312 MA3130MTX DIODE Q956 2SC3944ARLB TRANSISTOR D2313 MA152KTX DIODE Q1003 2SC3311ATA TRANSISTOR D2314 MA152KTX DIODE Q1107 BC847B TRANSISTOR D2316 MA152KTX DIODE Q1108 BC847B TRANSISTOR Q1109 BC847B...
  • Page 17 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description Q2402 2SA684R TRANSISTOR L818 EXCELSA39V COIL Q2403 2SA720-RS TRANSISTOR L860 TALL08T100KA COIL Q2431 BC847B TRANSISTOR L862 TALL08T680KA COIL Q2432 BC847B TRANSISTOR L874 EXCELSA35T COIL L877 EXCELSA35T...
  • Page 18 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description L2319 EXCELDR35V COIL L3411 EXCELDR35V COIL L2320 EXCELDR35V COIL L3412 EXCELDR35V COIL L2321 EXCELDR35V COIL L3413 EXCELDR35V COIL L2322 EXCELDR35V COIL L3414 EXCELDR35V COIL L2323 EXCELDR35V...
  • Page 19 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description LC1330 ELKE103FA FILTER JSA19 ERJ6GEY0R00 S.M.CARB 0.1W LC1331 ELKE103FA FILTER JSA20 ERJ6GEY0R00 S.M.CARB 0.1W LC1332 ELKE103FA FILTER JSA21 ERJ6GEY0R00 S.M.CARB 0.1W LC1333 ELKE103FA FILTER JSA22 ERJ6GEY0R00...
  • Page 20 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description JSDG55 ERJ3GEY0R00 S.M.CARB 0.1W JSDP6 ERJ6GEY0R00 S.M.CARB 0.1W JSDG56 ERJ3GEY0R00 S.M.CARB 0.1W JSDP7 ERJ6GEY0R00 S.M.CARB 0.1W JSDG57 ERJ3GEY0R00 S.M.CARB 0.1W JSDP8 ERJ6GEY0R00 S.M.CARB 0.1W JSDG58 ERJ3GEY0R00...
  • Page 21 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R371 ERJ6ENF1801 S.M.CARB 0.1W 1.8K R803 ERG3FJS183 METAL R373 ERG3FJ823 METAL R804 ERG3FJS183 METAL R374 ERJ6GEY0R00 S.M.CARB 0.1W R806 ERX12SZJR12 METAL 0.5W R375 ERJ6GEYJ822 S.M.CARB 0.1W...
  • Page 22 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R972 ERDS1FJ390 CARBON 0.5W R1158 ERJ3GEYJ101 S.M.CARB 0.1W R973 ERDS1FJ121 CARBON 0.5W R1160 ERJ3GEYJ182V S.M.CARB 0.1W 1.8K R1042 ERD25TC0T CARBON 0.25W R1161 ERJ6GEYJ103 S.M.CARB 0.1W R1043...
  • Page 23 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R1319 ERJ6ENF9530V S.M.CARB 0.1W 9K53 R1403 ERJ3GEYJ181 S.M.CARB 0.125 R1320 ERJ3GEYJ102 S.M.CARB 0.1W R1406 ERJ3GEYJ101 S.M.CARB 0.1W R1321 ERJ3GEYJ152 S.M.CARB 0.1W 150K R1407 ERJ3GEYJ221 S.M.CARB 0.1W...
  • Page 24 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R1529 ERJ6GEYJ100 S.M.CARB 0.1W R2322 ERJ6GEYJ562 S.M.CARB 0.1W R1531 ERJ6GEYJ100 S.M.CARB 0.1W R2323 ERJ6ENF4701 S.M.CARB 0.1W R1543 ERJ6GEYJ100 S.M.CARB 0.1W R2324 ERJ6GEY0R00 S.M.CARB 0.1W R1544 ERJ6GEYJ151...
  • Page 25 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R2407 ERD2FCVJ4R7P CARBON R2480 ERJ6GEY0R00 S.M.CARB 0.1W R2408 ERG2FJ101H METAL R2482 ERJ6GEYJ472 S.M.CARB 0.1W R2409 ERG2FJ101H METAL R2483 ERJ6GEYJ822 S.M.CARB 0.1W R2410 ERG5FJ473 METAL R2484 ERJ6GEYJ562...
  • Page 26 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R2549 ERJ6GEYJ102 S.M.CARB 0.1W R2621 ERJ6GEYJ105 S.M.CARB 0.1W R2550 ERJ6GEYJ821 S.M.CARB 0.1W R2622 ERJ6GEYJ104 S.M.CARB 0.1W 100K R2551 ERJ6GEYJ103 S.M.CARB 0.1W R2623 ERJ6GEYJ334 S.M.CARB 0.1W 330K...
  • Page 27 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R2732 ERJ6ENF1201 S.M.CARB 0.1W R3129 ERJ6GEYJ561 S.M.CARB 0.1W R3001 ERJ8GEYJ680 S.M.CARB .125W R3130 ERJ6GEYJ561 S.M.CARB 0.1W R3002 ERJ6GEYJ102 S.M.CARB 0.1W R3326 ERJ6ENF2202 S.M.CARB 0.1W R3003 ERJ6GEYJ221...
  • Page 28 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R4801 ERJ6ENF2701 S.M.CARB 0.1W C482 ECA1CM102B ELECT 1000µF R4802 ERJ6ENF1331 S.M.CARB 0.1W C490 ECJ2VF1H103Z CERAMIC 10nF R4803 ERJ6ENF3320 S.M.CARB 0.1W C504 ECA1VM101GB ELECT 100µF R4804 ERJ6ENF1001...
  • Page 29 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C902 ECA1HM101GB ELECT 100µF C1160 EEVHB1C100R CERAMIC 10pF C905 ECA1VM101GB ELECT 100µF C1161 EEVHB0G221P CERAMIC 220pF C907 ECJ2VC1H151J CERAMIC 150pF C1162 ECJ2VF1C104Z CERAMIC 100nF C955 ECQB1103J...
  • Page 30 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C1353 ECJ2VF1C105Z CERAMIC C1429 ECJ2VF1C105Z CERAMIC C1354 ECJ2VF1C105Z CERAMIC C1430 ECJ2VF1C105Z CERAMIC C1355 TACCM0J335KT CERAMIC 6.3V 3.3µF C1431 ECJ2VF1C105Z CERAMIC C1356 TACCM0J335KT CERAMIC 6.3V 3.3µF C1432...
  • Page 31 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C1503 EEVHB0J101P CERAMIC 100pF C2047 ECJ2VF1H103Z CERAMIC 10nF C1505 EEVHB0G221P CERAMIC 220pF C2222 ECEA1HKA100 ELECT 10pF C1506 EEVHB0G221P CERAMIC 220pF C2223 ECEA1HKA100 ELECT 10pF C1507 EEVHB0G221P...
  • Page 32 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C2371 ECJ2VB1C154K CERAMIC 150nF C2454 ECA1HM330B ELECT 33µF C2372 ECEA1CN100 ELECT 10µF C2455 ECJ2VF1H103Z CERAMIC 10nF C2373 ECJ2VB1H102K CERAMIC C2456 ECJ2VF1H103Z CERAMIC 10nF C2374 ECJ2VB1H102K CERAMIC...
  • Page 33 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C2528 ECJ2VF1C105Z CERAMIC C2619 ECJ2VB1H562K CERAMIC 5.6nF C2529 ECJ2VF1H104Z CERAMIC 100nF C2620 ECJ2VB1H562K CERAMIC 5.6nF C2530 ECEA1HKA3R3 ELECT 3300pF C2621 ECJ2VF1C474Z CERAMIC 470nF C2531 ECJ2VF1C105Z CERAMIC...
  • Page 34 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C3003 ECEA1CN470 ELECT 47µF C3407 ECJ2VC1H561J CERAMIC 560pF C3006 ECJ2VF1C104Z CERAMIC 100nF C3408 ECJ2VC1H561J CERAMIC 560pF C3007 ECJ2VB1E473K CERAMIC 47nF C3409 ECJ2VC1H561J CERAMIC 560pF C3008 ECJ2VB1E473K...
  • Page 35 400V 27nF TNPA1726AC L P.C.B. C573 ECKC2H103J CERAMIC 500V 10nF TQF8E3198-1 MODEL LABEL C578 ECWF4684JBB FILM 400V 680nF TBMA060 PANASONIC BADGE C579 ECWF4304JBP FILM 400V 300nF MISCELLANEOUS COMPONENTS C580 ECWF4304JBP FILM 400V 300nF C586 ECQB1H473K FILM 47nF TBLG3019 SET FOOT (FRONT)
  • Page 36 G P.C.B. IC1252 PQ30RV21B 2.5V REGULATOR TNP8EL014AA L P.C.B. IC1304 C1AB00001230 VIDEO PROCESSOR TQF8E3189 MODEL LABEL IC2402 PQ30RV21B 2.5V REGULATOR TBMA060 PANASONIC BADGE COILS MISCELLANEOUS COMPONENTS L558 EXCELDR35C COIL TBL4G3402 SET FOOT L574 ELHKLB070B COIL TES2298 CRT EARTH SPRING L576 ELC18B221F...
  • Page 37 TNP8EG004AA G P.C.B. R532 ERD25TJ473 CARBON 0.25W TNP8EL014AA L P.C.B. R533 ERG3FJS821 METAL TQF8E3207 MODEL LABEL R534 ERDS2TJ333T CARBON TBMA060 PANASONIC BADGE R535 ERG1FJS332 METAL 3R3K MISCELLANEOUS COMPONENTS R536 ERG3FJS821 METAL TBL4G3402 SET FOOT R538 ERC14GK225 SOLID 1/4W 2.2M TES2298...
  • Page 38 ERD25TJ101 CARBON 0.25W TNP8EL014AA L P.C.B. R531 ERC14GK334 SOLID 0.25W 10% 330K TQF8E3208 MODEL LABEL R532 ERD25TJ473 CARBON 0.25W TBMA060 PANASONIC BADGE R533 ERG3FJS821 METAL MISCELLANEOUS COMPONENTS R534 ERDS2TJ333T CARBON R535 ERG1FJS332 METAL 3R3K TBL4G3402 SET FOOT R536 ERG3FJS821 METAL...
  • Page 39 CARBON 0.25W TNPA1726 L P.C.B. R531 ERC14GK334 SOLID 0.25W 10% 330K TQF8E3204-1 MODEL LABEL R532 ERD25TJ473 CARBON 0.25W TBMA059 PANASONIC BADGE R533 ERG3FJS821 METAL MISCELLANEOUS COMPONENTS R534 ERDS2TJ333T CARBON TBM8E2138 PRESET LABELRIGHT R535 ERG1FJS332 METAL 3R3K TEK6935 LID SWITCH R536...
  • Page 40 R535 ERG1FJS332 METAL 3R3K TNPA1726 L P.C.B. R536 ERG3FJS821 METAL TQF8E3219-1 MODEL LABEL R538 ERC14GK225 SOLID 1/4W 2.2M TBMA059 PANASONIC BADGE R540 ERD25TJ560 CARBON 0.25W MISCELLANEOUS COMPONENTS R555 ERO25TKF4702 METAL 0,25W R556 ERF2AKR18P WOUND TBM8E2138 PRESET LABELRIGHT R558 ERO25TKF2202 METAL 0.25W 10%...
  • Page 41 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description SPK2 EAB12149C2 SPEAKER (WOOFER) R538 ERC14GK225 SOLID 1/4W 2.2M SPK3 EASG7DH08B2 SPEAKER (TWEETER) R540 ERD25TJ560 CARBON 0.25W SPK4 EASG7DH08B2 SPEAKER (TWEETER) R555 ERO25TKF4702 METAL 0,25W TES01...
  • Page 42 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description TQF8E3218-1 MODEL LABEL R452 ERDS1TJ3R3 CARBON 0.5W TBMA059 PANASONIC BADGE R473 ERJ6GEYJ222 S.M.CARB 0.1W R474 ERJ6GEYJ103 S.M.CARB 0.1W MISCELLANEOUS COMPONENTS R509 ERX3FJ1R0 METAL TBM8E2138...
  • Page 43 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description TERMINALS AND LINKS JK351 TJS1A5330 CRT SOCKET...
  • Page 44: Schematic Diagrams

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAMS FOR MODELS TX-28/32/36PB50D TX-28/32/36PB50F TX-32/36PB50F/P (EURO-7 CHASSIS) IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer's specified parts. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise.
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  • Page 57 All manuals and user guides at all-guides.com A – BOARD - TNPH0348...
  • Page 58 All manuals and user guides at all-guides.com A – BOARD – TNPH0348...
  • Page 59 All manuals and user guides at all-guides.com D – DOARD – TNPH0349...
  • Page 60 All manuals and user guides at all-guides.com DF – BOARD - TNPA1806...
  • Page 61 All manuals and user guides at all-guides.com G – BOARD – TNP8EG004 DIODES D1011 D1012 D3103 D3104 TRANSISTORS Q1003...
  • Page 62 All manuals and user guides at all-guides.com L – BOARD - TNPA1726...
  • Page 63 All manuals and user guides at all-guides.com H – BOARD – TNPA1724...
  • Page 64 All manuals and user guides at all-guides.com Z - PCB – TNP8EZ005 DIODES D2410 D2437 IC2406 D2401 D2411 D2438 TRANSISTORS D2402 D2431 I.C.’s Q2402 D2403 D2432 IC2401 Q2403 D2404 D2433 IC2402 D2405 D2434 IC2403 D2406 D2435 IC2404 D2407 D2436 IC2405...
  • Page 65 All manuals and user guides at all-guides.com NOTES...