Panasonic TX-28PG45 Service Manual

Panasonic TX-28PG45 Service Manual

Euro-7 chassis

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SPECIFICATIONS
Power Source:
Power Consumption:
Stand-by Power
Consumption:
Aerial Impedance:
Receiving System:
Receiving Channels:
Intermediate Frequency:
Video/Audio
Video
Audio
Colour
Video/Audio Terminals:
AUDIO MONITOR OUT
AV1 IN
AV1 OUT
AV2 IN
AV2 OUT
220-240V a.c., 50Hz
135W
2.8W
75Ω unbalanced, Coaxial Type
PAL-I , PAL-525/60 UHF
M.NTSC
NTSC (AV only)
UHF E21-E68
39.5MHz
33.5MHz
32.95MHz (NICAM)
35.07MHz (PAL)
Audio (RCAx2) 500mV rms 1kΩ
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)
Colour Television
TX-28PG45
EURO-7 Chassis
AV3 IN
S-Video IN
(4-pin)
Audio (RCAx2)
Video (RCAx1)
AV4 IN
Video (21 pin)
Audio (21 pin)
S-Video IN
(21-pin)
RGB (21 pin)
AV4 OUT
Video (21 pin)
Audio (21 pin)
30.5kV ± 1kV
High Voltage:
Picture Tube:
W66EKT10X71 66cm
Audio Output:
2 x 20W (Music Power)
8Ω Impedance
Headphones:
8Ω Impedance
3.5mm
Accessories
supplied :
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height:
495mm
Width:
728mm
Depth:
485mm
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-01020
Y: 1V p-p 75Ω
C: 0,3V p-p 75Ω
500mV rms 10kΩ
1V p-p 75Ω
1V p-p 75Ω
500mV rms 10kΩ
Y: 1V p-p 75Ω
C: 0.3V p-p 75Ω
1V p-p 75Ω
500mV rms 1kΩ

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Summary of Contents for Panasonic TX-28PG45

  • Page 1 ORDER No. SM-01020 Colour Television TX-28PG45 EURO-7 Chassis SPECIFICATIONS Power Source: 220-240V a.c., 50Hz AV3 IN S-Video IN Y: 1V p-p 75Ω (4-pin) C: 0,3V p-p 75Ω Power Consumption: 135W Audio (RCAx2) 500mV rms 10kΩ Video (RCAx1) 1V p-p 75Ω...
  • Page 2: Table Of Contents

    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 ...............................33 CONDUCTOR VIEWS................................42 SAFETY PRECAUTIONS GENERAL GUIDE LINES It is advisable to insert an isolation transformer in the Check each exposed metallic part and check the a.c.
  • Page 3: Service Hints

    SERVICE HINTS How to remove the rear cover 1. Remove the 9 screws as shown in Fig.2. SCREWS SCREWS Fig.2. Abb.2. Fig. 2. LOCATION OF CONTROLS L-Board Z-Board P-Board DG-Board DP-Board G-Board K-Board Screen H-Board Focus A-Board D-Board...
  • Page 4: Adjustment Procedure And Factory Settings

    ADJUSTMENT PROCEDURE Item / Preparation Adjustments +B SET-UP Set the +B voltage up as follows:- Adjust R811 so that B2 shows 148V±1V. Receive a Greyscale signal. Confirm the following voltages. Set the controls :- ± 0,25V B10 ± 0,25V ± 0,5V ±...
  • Page 5: Waveform Pattern Table

    WAVEFORM PATTERN TABLE Vert Drive VFLB Vert Out IC451 Pin 3 IC451 Pin 2 IC601 Pin 31 20mS 20mS 20mS H - Out H - Out H - Pulse IC601 Pin 50 IC701 Pin 5 Base Q503 64µS 64µS 64µS HFLB HFLB Video Out...
  • Page 6: Alignment Settings

    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 volume 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 12: Parts Location

    PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List. AV COVER...
  • Page 13: Replacement Parts List

    EXPLODED VIEW I.C.s EABG12506A2 SPEAKER ENG27511G TUNER D354 TL431CLPM REGULATOR EUR511212A REMOTE CONTROL IC051 AN7805FLB 5V REGULATOR TBMA060 PANASONIC BADGE IC052 AN7805FLB 5V REGULATOR TBXA24103A POWER BUTTON IC351 TDA6111Q-N4 RGB OUTPUT THT1062 CRT FIXING SCREW IC352 TDA6111Q-N4 RGB OUTPUT TKPA34403...
  • Page 14 Cct Ref Parts Number Description Cct Ref Parts Number Description IC2503 CS4340-KSR STEREO D/A CONVERTER D455 MA152KTX DIODE IC2504 CS4228-KSRB AUDIO D/A & A/D D456 ERA22-02V3 DIODE IC2508 TC74LCX574FL ADDRESS BUFFER IC D465 MA3039HTX DIODE IC2509 TC74LCX574FL ADDRESS BUFFER IC D502 MA4150TA DIODE...
  • Page 15 Cct Ref Parts Number Description Cct Ref Parts Number Description D1308 MA152KTX DIODE Q874 2SA684R TRANSISTOR D1309 MA152KTX DIODE Q875 2SA720-RS TRANSISTOR D1310 MA3062MTX DIODE Q881 2SC3311ATA TRANSISTOR D1311 MA3062MTX DIODE Q882 2SC3311ATA TRANSISTOR D1312 MA3062MTX DIODE Q883 2SC1317-TA TRANSISTOR D1313 MA3043MTX DIODE...
  • Page 16 Cct Ref Parts Number Description Cct Ref Parts Number Description Q2308 BC857B TRANSISTOR L812 EXCELSA39V COIL Q2309 BC847B TRANSISTOR L815 EXCELSA39V COIL Q2310 BC847B TRANSISTOR L818 EXCELSA39V COIL Q2311 BC847B TRANSISTOR L860 TALL08T100KA COIL Q2402 2SA684R TRANSISTOR L862 TALL08T680KA COIL Q2403 2SA720-RS TRANSISTOR...
  • Page 17 Cct Ref Parts Number Description Cct Ref Parts Number Description L2325 EXCELDR35V COIL L3416 EXCELSA35T COIL L2407 EXCELSA35T COIL L3417 EXCELSA35T COIL L2409 EXCELSA35T COIL L3418 EXCELSA35T COIL L2410 EXCELSA35T COIL L3419 EXCELSA35T COIL L2412 EXCELSA35T COIL L3420 ELESN4R7KA COIL L2414 EXCELDR35V COIL...
  • Page 18 Cct Ref Parts Number Description Cct Ref Parts Number Description X2101 TSSA128 CRYSTAL JSA35 ERJ6GEY0R00 S.M.CARB 0.1W X2501 TSSA172 CRYSTAL JSA36 ERJ6GEY0R00 S.M.CARB 0.1W X3501 H0J600400006 CRYSTAL JSA42 ERJ6GEY0R00 S.M.CARB 0.1W JSA45 ERJ6GEY0R00 S.M.CARB 0.1W RESISTORS JSA46 ERJ6GEY0R00 S.M.CARB 0.1W C025 ERJ6GEY0R00 S.M.CARB...
  • Page 19 Cct Ref Parts Number Description Cct Ref Parts Number Description JSDG67 ERJ3GEY0R00 S.M.CARB 0.1W L3002 ERD25TC0T CARBON 0.25W JSDG68 ERJ3GEY0R00 S.M.CARB 0.1W L3003 ERD25TC0T CARBON 0.25W JSDG76 ERJ3GEY0R00 S.M.CARB 0.1W R001 ERJ6GEY0R00 S.M.CARB 0.1W JSDG79 ERJ3GEY0R00 S.M.CARB 0.1W R002 ERJ6GEYJ683 S.M.CARB 0.1W JSDG80...
  • Page 20 Cct Ref Parts Number Description Cct Ref Parts Number Description R557 ERO50PKF2802 METAL 0.5W R875 ERG3FJ220H METAL R558 ERDS2TJ333T CARBON R876 ERQ2CJP2R7 METAL R559 ERD25TJ273 CARBON 0.25W R877 ERDS1TJ103 CARBON 0.5W R560 ERD25TJ393 CARBON 0.25W R878 ERDS2TJ221T CARBON 0.5W R564 ERO25CKF1002 METAL 0.25W...
  • Page 21 Cct Ref Parts Number Description Cct Ref Parts Number Description R1113 ERJ3GEYJ103 S.M.CARB 0.1W R1214 EXB38V680JV CHIP 0.063 R1114 ERJ6GEYJ102 S.M.CARB 0.1W R1217 EXB38V680JV CHIP 0.063 R1115 ERJ6GEYJ101 S.M.CARB 0.1W R1221 EXB38V680JV CHIP 0.063 R1116 ERJ3GEYJ153V S.M.CARB 0.1W R1225 EXB38V680JV CHIP 0.063 R1117...
  • Page 22 Cct Ref Parts Number Description Cct Ref Parts Number Description R1356 ERJ3GEYJ331 S.M.CARB 0.125 R1452 ERJ6ENF4750 S.M.CARB 0.1W R1357 ERJ3GEYJ272 S.M.CARB 0.125 R1457 ERJ6GEYJ224 S.M.CARB 0.1W 220K R1358 ERJ3GEYJ102 S.M.CARB 0.1W R1458 ERJ6ENF6801 S.M.CARB 0.1W R1359 ERJ3GEYJ103 S.M.CARB 0.1W R1459 ERJ6ENF4701 S.M.CARB 0.1W...
  • Page 23 Cct Ref Parts Number Description Cct Ref Parts Number Description R2318 ERJ6GEY0R00 S.M.CARB 0.1W R2409 ERG2FJ101H METAL R2319 ERJ6GEYJ683 S.M.CARB 0.1W R2410 ERG5FJ473 METAL R2321 ERJ6GEYJ562 S.M.CARB 0.1W R2410 ERJ6GEYJ822 S.M.CARB 0.1W R2322 ERJ6GEYJ562 S.M.CARB 0.1W R2411 ERD2FCVJ4R7P CARBON R2323 ERJ6ENF4701 S.M.CARB 0.1W...
  • Page 24 Cct Ref Parts Number Description Cct Ref Parts Number Description R2488 ERJ6GEYJ221 S.M.CARB 0.1W R2556 ERJ6GEYJ821 S.M.CARB 0.1W R2489 ERJ6GEYJ183 S.M.CARB 0.1W R2557 ERJ6GEYJ103 S.M.CARB 0.1W R2490 ERJ6GEYJ104 S.M.CARB 0.1W 100K R2558 ERJ6GEYJ821 S.M.CARB 0.1W R2491 ERJ6GEYJ123 S.M.CARB 0.1W R2559 ERJ6GEYJ103 S.M.CARB 0.1W...
  • Page 25 Cct Ref Parts Number Description Cct Ref Parts Number Description R2633 ERJ6GEYJ224 S.M.CARB 0.1W 220K R3014 ERJ8ENF75R0 S.M.CARB 0.1W R2637 ERJ6GEY0R00 S.M.CARB 0.1W R3015 ERJ6GEYJ184 S.M.CARB 0.1W 180K R2638 ERJ6GEYJ102 S.M.CARB 0.1W R3017 ERJ6GEYJ221 S.M.CARB 0.1W R2639 ERJ6GEYJ472 S.M.CARB 0.1W R3018 ERJ6GEYJ221 S.M.CARB...
  • Page 26 Cct Ref Parts Number Description Cct Ref Parts Number Description R3411 ERJ8ENF75R0 S.M.CARB 0.1W C014 ECJ2VF1C104Z CERAMIC 100nF R3412 ERJ6GEYJ223 S.M.CARB 0.1W C017 ECJ2VF1C104Z CERAMIC 100nF R3413 ERJ6GEYJ101 S.M.CARB 0.1W C018 ECJ2VF1C104Z CERAMIC 100nF R3414 ERJ8ENF75R0 S.M.CARB 0.1W C020 ECJ2VF1C104Z CERAMIC 100nF R3415...
  • Page 27 Cct Ref Parts Number Description Cct Ref Parts Number Description C576 ECKC3A182J CERAMIC 1800pF C963 ECJ2VC1H221J CERAMIC 220pF C578 ECWF4684JBB FILM 400V 680nF C964 ECA1CHG101 ELECT 100µF C966 ECA1HM101GB ELECT 100µF C579 ECWF4304JBP FILM 400V 300nF C580 ECWF4304JBP FILM 400V 300nF C967 ECA1CHG471B...
  • Page 28 Cct Ref Parts Number Description Cct Ref Parts Number Description C1170 ECEA1EKN100B ELECT 10µF C1362 EEVHB0J101P CERAMIC 100pF C1251 ECA1HM101GB ELECT 100µF C1363 ECJ1VC1H102J CERAMIC C1252 ECA1HM100GB ELECT 10µF C1364 ECJ1VC1H680J CERAMIC 68pF C1253 ECJ2VB1C104K CERAMIC 100nF C1365 ECJ2VF1C105Z CERAMIC C1254 ECJ2VB1C104K CERAMIC...
  • Page 29 Cct Ref Parts Number Description Cct Ref Parts Number Description C1480 EEVHP1C100R CERAMIC 10pF C2034 ECJ2VF1H103Z CERAMIC 10nF C1481 TACCN0J105KT CERAMIC 6.3V 1µF C2035 ECJ2VF1H103Z CERAMIC 10nF C1482 TACCN0J105KT CERAMIC 6.3V 1µF C2036 ECJ2VF1H103Z CERAMIC 10nF C1486 EEVHP1E4R7R CERAMIC 4R7pF C2037 ECJ2VF1C105Z CERAMIC...
  • Page 30 Cct Ref Parts Number Description Cct Ref Parts Number Description C2353 ECJ2VB1H104K CERAMIC 100nF C2453 ECA1HM330B ELECT 33µF C2357 ECQV1H154J FILM 150nF C2454 ECA1HM330B ELECT 33µF C2359 ECJ2VB1H104K CERAMIC 100nF C2456 ECJ2VF1H103Z CERAMIC 10nF C2360 ECUV1H223KBX S.M. CAP 22nF C2457 ECJ2VF1H103Z CERAMIC 10nF...
  • Page 31 Cct Ref Parts Number Description Cct Ref Parts Number Description C2530 ECEA1HKA3R3 ELECT 3300pF C2624 ECJ2VC1H221J CERAMIC 220pF C2531 ECJ2VF1C105Z CERAMIC C2625 ECJ2VC1H221J CERAMIC 220pF C2532 ECJ2VF1C105Z CERAMIC C2626 ECJ2VC1H221J CERAMIC 220pF C2533 ECJ2VF1H683Z CAPACITO 68nF C2627 ECJ2VB1H562K CERAMIC 5.6nF C2534 ECEA1CKA100 ELECT...
  • Page 32 Cct Ref Parts Number Description Cct Ref Parts Number Description C3010 ECJ2VB1E473K CERAMIC 47nF C3417 ECJ2VC1H561J CERAMIC 560pF C3011 ECJ2VB1E473K CERAMIC 47nF C3418 ECJ2VC1H561J CERAMIC 560pF C3012 ECJ2VB1E473K CERAMIC 47nF C3419 ECJ2VC1H561J CERAMIC 560pF C3013 ECJ2VF1C105Z CERAMIC C3420 ECJ2VC1H561J CERAMIC 560pF C3014 ECJ2VF1C105Z...
  • Page 33: Schematic Diagrams

    SCHEMATIC DIAGRAMS FOR MODEL TX-28PG45 (EURO-7 CHASSIS) IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturers' specified parts. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise.
  • Page 44 D-BOARD – TNPH0349...
  • Page 45 K – BOARD – TNP8EK008...
  • Page 46 A – BOARD – TNPH0348...
  • Page 47 A-BOARD – TNPH0348...
  • Page 48 Z-BOARD – TNPA2270...
  • Page 49 G-BOARD – TNP8EG002...
  • Page 50 H-BOARD – TNPA1724...
  • Page 51 L - BOARD – TNPA1726...

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