Panasonic TX-25P80T Service Manual
Panasonic TX-25P80T Service Manual

Panasonic TX-25P80T Service Manual

Mx-10 chassis

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Specification
Power Source
Power Consumption
Aerial Terminal
Tuning System
Receiving System
Receiving Channels
VHF BAND
UHF BAND
CATV
Intermediate Frequency
AC Auto 110-240 V, 50/60 Hz
138 W
Standby condition : 0.8 W
Impedance : 75Ω, Coaxial type
Frequency Synthesizer
Auto Search Tuning
Pos : 100 Positions
17 Systems
Regular TV
2-12 (PAL/SECAM B, K1)
0-12 (PAL B AUST.)
1-9 (PAL B N.Z.)
1-12 (PAL/SECAM D)
1-12 (NTSC M Japan)
2-13 (NTSC M U.S.A.)
21-69 (PAL G,H,I/SECAM G,K,K1)
28-69 (PAL B AUST.)
13-57 (PAL D,K)
13-62 (NTSC M Japan)
14-69 (NTSC M U.S.A.)
S1-S20 (OSCAR)
1-125 (U.S.A. CATV)
C13-C49 (JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
TX-25P80T
MX-10 Chassis
Video
Sound
Colour
Receiving Stereo Sound System
Video/Audio/Terminals
AV 1, 2, 3
Y/PB/PR
Monitor Out
High Voltage
Picture Tube
Audio Output
Dimensions (WxDxH)
Weight (Mass)
Accessories Supplied
Remote Control Transmitter
© 2001 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
distribution is a violation of law.
Order No. MTV0110238C3
Colour Television
38.0 MHz
31.5 MHz (D,K) / 32.5 MHz (B,G)
32.0 MHz (I) / 32.5 MHz (M)
33.57 MHz (PAL) /
33.6 MHz (SECAM)
34.42 MHz (NTSC) /
33.75 MHz (SECAM)
QUADRA STEREO / TEXT
IN S-Video Y:1.0Vp-p 75Ω
DVD IN S-Video C:0.3Vp-p 75Ω
(Phone type) Y:1.0Vp-p 75Ω PB,
PR:0.7Vp-p 75Ω Video 1.0Vp-p
75Ω Audio Approx. 400mV 47KΩ
Video 1,0Vp-p 75Ω
Audio Approx. 400mV 47KΩ
31.0 (+0.7, -1.5kV) at zero beam
A60LUQ085X Type 25 (60 cm)
Measured diagonally, 104°
deflection
16 W speaker
634 mm x 471 mm x 534 mm
37 kg (Net)
1. R6(AA) Battery x 2
Unauthorized
copying
current
and

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Summary of Contents for Panasonic TX-25P80T

  • Page 1 Order No. MTV0110238C3 Colour Television TX-25P80T MX-10 Chassis Specification Power Source AC Auto 110-240 V, 50/60 Hz Video 38.0 MHz Power Consumption 138 W Sound 31.5 MHz (D,K) / 32.5 MHz (B,G) Standby condition : 0.8 W 32.0 MHz (I) / 32.5 MHz (M) Aerial Terminal Impedance : 75Ω, Coaxial type...
  • Page 2: Table Of Contents

    2.1. BACK VIEW 6.3. H-Board (TNP4G173AB), X-Board (TNP4G108BC) and 16 2.2. LOCATION AND FUNCTION NAME OF CIRCUIT BOARD 7 SCHEMATIC DIAGRAMS 7.1. SCHEMATIC DIAGRAM FOR MODEL TX-25P80T (MX- 10A CHASSIS) 3 Service Hints 3.1. HOW TO MOVE CHASSIS INTO SERVICE POSITION. 5 7.2.
  • Page 3: Safety Precautions

    TX-25P80T 1 Safety Precautions 1.3. Leakage Current Hot Check (See Fig. 1) 1.1. General Guide 1. Plug the AC cord directly into the AC outlet. Do not use an 1. It is advisable to insert an isolation transformer in the AC isolation transformer for this check.
  • Page 4: Location Of Controls And Circuit Boards

    TX-25P80T 2 Location of Controls and Circuit Boards 2.1. BACK VIEW 2.2. LOCATION AND FUNCTION NAME OF CIRCUIT BOARD...
  • Page 5: Service Hints

    TX-25P80T 3 Service Hints 3.1. HOW TO MOVE CHASSIS INTO SERVICE POSITION. 1. Remove 9 screws. 2. Draw out Main Chassis. 3. Stand the Main Chassis.
  • Page 6: Market Mode Function

    TX-25P80T 4 MARKET MODE FUNCTION Outline: MPU controls the functions switching for each ICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Market Mode. 1. Selection of Market Mode Adjust the VOLUME “zero” and set OFF TIMER Button to 30 min. Then, simultaneously press the RECALL Button on the remote control and the VOLUME DOWN button - the TV set.
  • Page 7 TX-25P80T 3. Pincushion Adjustment Mode To change the screen (item) in CHK mode, press “3” or “4” of the 10 key buttons. Then the Date and Level changes by pressing Volume “+” or “-” button. Display Adj. Range PARABOLA 00H ~ 3FH...
  • Page 8: Adjustment Procedure

    TX-25P80T 5 ADJUSTMENT PROCEDURE 5.1. B VOLTAGE Item/Preparation Adjustment Procedure 1. Operate the TV set. 1. Confirm that the indicated test points for the specified voltage: TPA 140 : 141±2V TPA 12 : 12±1.0V 2. Set controls : (MARKET MODE CHK 2) TPA 9 : 9±1V...
  • Page 9: Pal Colour Output

    TX-25P80T 5.6. PAL COLOUR OUTPUT Item/Preparation Adjustment Procedure 1. Receive PAL colour bar pattern. 1. Adjust Bright Control. a = 2.3±-0.2Vp-p 2. Connect an oscilloscope probe to TPA40. 2. Adjust Sub Colour control. 3. Connect a short jumper to FBT pin 3 or TPA34 and TPA32.
  • Page 10: Colour Purity

    TX-25P80T Before Colour Purity, Convergence and White Balance adjustments are attempted, V. Center, V. Height, H. Width, H. Center and Focus adjustments must be completed. 5.8. COLOUR PURITY 1. Set Bright and Contrast controls to their maximum positions. 2. Operate the TV set over 15 minutes.
  • Page 11: White Balance (Market Mode Chk 3)

    TX-25P80T 5.10. WHITE BALANCE (MARKET MODE CHK 3) Write down the original value for each address adjustment Preparation before adjusting anything. 1. Receive a colour bar signal with colour “OFF”, and operate the TV set for more than 15 minutes.
  • Page 12: Conductor Views

    TX-25P80T 6 CONDUCTOR VIEWS 6.1. T-Board (TNP4G115AH) and L-Board (TNP4G107AW)
  • Page 13: A-Board (Tnp4G164Aq)

    TX-25P80T 6.2. A-Board ( TNP4G164AQ A-Board TNP4G164AQ...
  • Page 14 TX-25P80T 6.3. H-Board (TNP4G173AB), X-Board (TNP4G108BC) TNP4G173AB...
  • Page 20: Rear Av Circuit (Tnp4G173Ab)

    TX-25P80T 8 PARTS LOCATION...
  • Page 21: Crt Circuit (Tnp4G107Aw)

    TX-25P80T 9 Replacement Parts List 9.1. Replacement Parts List Notes...
  • Page 22: Pincushion Circuit (Tnp4G108Bc)

    R210 ERJ6GEYJ563 M 56KOHM,J,1/10W EUR511045 REMOTE CONTROL R211 ERJ6GEYJ273 M 27KOHM,J,1/10W KDY4QHA31F DEFLECTION YOKE R213 ERJ6GEYJ471 M 470OHM,J,1/10W TBMA060 PANASONIC BADGE R214 ERJ6GEYJ473 M 47KOHM,J,1/10W TBM4G0761 MODEL NAME PLATE R215 ERJ6GEYJ103 M 10KOHM,J,1/10W TBX4G87610 POWER BUTTON R216 ERJ6GEYJ103 M 10KOHM,J,1/10W...
  • Page 23: Teletext Circuit (Tnp4G115Ah)

    TX-25V80T R530 ERQ14AJ100E F 10OHM,J, 1/4W R756 TR0S2THF1152 M11.5KOHM,F, 1/4W R531 ER0S2CHF1182 M11.8KOHM,F, 1/4W R758 TAR26EJ2R7Z W 2.7OHM,J, 10W R532 TR0S2THF1132 M11.3KOHM,F, 1/4W R801 TAR26FJ2R2Z W 2.2OHM, R533 TR0S2THF1002 M 10KOHM,F, 1/4W R810 ERDS1TJ394 C 390KOHM,J, 1/2W R540 ERDS2TJ331 C 330OHM,J, 1/4W R811 ERDS2TJ473 C 47KOHM,J, 1/4W...
  • Page 24 TX-25V80T R1054 ERDS2TJ561 C 560OHM,J, 1/4W R2331 ERJ6GEYJ102 M 1KOHM,J,1/10W R1055 ERJ6GEYJ102 M 1KOHM,J,1/10W R2801 ERJ6GEYJ103 M 10KOHM,J,1/10W R1056 ERJ6GEYJ102 M 1KOHM,J,1/10W R2803 ERDS2TJ8R2 C 8.2OHM,J, 1/4W R1101 ERJ6GEYJ562 M 5.6KOHM,J,1/10W R2804 ERJ6GEYJ472 M 4.7KOHM,J,1/10W R1102 ERJ6GEYJ332 M 3.3KOHM,J,1/10W R2805 ERJ6GEYJ752 M 7.5KOHM,J,1/10W R1103 ERJ6GEYJ123...
  • Page 25 TX-25V80T R3086 ERJ3GEYJ103 M 10KOHM,J,1/16W R3579 ERJ6GEYJ103 M 10KOHM,J,1/10W R3087 ERJ3GEYJ103 M 10KOHM,J,1/16W R3580 ERJ6GEYJ101 M 100OHM,J,1/10W R3089 ERJ6GEYJ681 M 680OHM,J,1/10W R3581 ERJ6GEYJ273 M 27KOHM,J,1/10W R3092 ERJ3GEYJ331 M 330OHM,J,1/16W R3583 ERJ6GEYJ472 M 4.7KOHM,J,1/10W R3097 ERJ3GEYJ471 M 470OHM,J,1/16W R3584 ERJ6GEYJ473 M 47KOHM,J,1/10W R3098 ERJ3GEYJ471 M 470OHM,J,1/16W R3585...
  • Page 26 TX-25V80T C403 ECJ2VC1H222J C 2200PF, J, 50V C663 ECJ2VF1H103Z C 0.01UF, Z, 50V C404 ECJ2VC1H102J C 1000PF, J, 50V C664 ECA1CM471B E 470UF, C420 ECJ2VC1H102J C 1000PF, J, 50V C665 ECJ2VF1H224Z C 0.22UF, Z, 50V C421 ECJ2VF1H103Z C 0.01UF, Z, 50V C701 ECQV1H684JM P 0.68UF, J, 50V...
  • Page 27: Partlist

    TX-25V80T C962 ECKW2H103ZF7 C 0.01UF, Z,500V C3006 ECA1HM100B 10UF, C963 ECCF1H151J C 150PF, J, 50V C3007 ECA1HM100B 10UF, C964 ECA1CHG101 E 100UF, C3008 ECA1HMR47B E 0.47UF, C966 ECA1CHG101 E 100UF, C3011 ECJ1VF1H103Z C 0.01UF, Z, 50V C967 ECA1CM221B E 220UF, C3012 ECEA1HKAR47 E 0.47UF,...
  • Page 28 TX-25V80T C3571 ECJ2VF1H103Z C 0.01UF, Z, 50V L1131 TSKA064-1 BEAD CORE C3572 ECUX1H121JX C 120PF, J, 50V L1145 TLUABTA100 PEAKING COIL C3575 ECEA1CKA101 E 100UF, L1160 TLUABTA4R7 PEAKING COIL C3576 ECJ2VF1H103Z C 0.01UF, Z, 50V L2830 EXCELSA35T BEAD CORE C3577 ECEA1CKA101 E 100UF, L2831 EXCELSA35T...
  • Page 29: Replacement Parts List Notes

    TX-25V80T D702 MA29W-B DIODE IC701 NJM4565L LINEAR IC D703 MA29W-B DIODE IC801 STRF6656LF53 LINEAR IC D750 MA165 DIODE IC860 SE140N LINEAR IC D751 MA4104J DIODE IC881 AN7812LB LINEAR IC D752 MA165 DIODE IC882 AN7809 LINEAR IC D801 ERZV10D621CS VARISTOR IC884 PQ05RD1B LINEAR IC D803 D4SB80...
  • Page 30: Replacement Parts List

    TX-25V80T Q3025 2SC2412KT TRANSISTOR JS3518 ERJ6GEY0R00 0OHM,J,1/10W Q3026 2SC2412KT TRANSISTOR JS3520 ERJ6GEY0R00 0OHM,J,1/10W Q3041 2SC2412KT TRANSISTOR JS3530 ERJ6GEY0R00 0OHM,J,1/10W Q3050 2SC2412KT TRANSISTOR JS3532 ERJ6GEY0R00 0OHM,J,1/10W Q3060 2SC2412KT TRANSISTOR JS3534 ERJ6GEY0R00 0OHM,J,1/10W Q3061 2SC2412KT TRANSISTOR JS3553 ERJ6GEY0R00 0OHM,J,1/10W Q3074 2SC2412KT TRANSISTOR JS4801 ERJ6GEY0R00 0OHM,J,1/10W...

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