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SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
85W
Stand-by Power
Consumption:
1,8W
Aerial Impedance:
75Ω unbalanced, Coaxial Type
Receiving System:
PAL I, PAL-525/60
M.NTSC
NTSC (AV only)
Receiving Channels:
UHF E21-E69
Intermediate Frequency:
Video/Audio
Video
39,5MHz
Audio
33,5MHz
32,95MHz (NICAM)
Colour
35,07MHz
Terminals:
AUDIO MONITOR OUT
Audio (RCAx2) 500mV rms 1kΩ
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
Colour Television
EURO-4 Chassis
AV2 IN
Video (21 pin)
Audio (21 pin)
S-Video IN
(21-pin)
AV2 OUT
Video (21 pin)
Audio (21 pin)
Selectable output (21 pin)
AV3 IN
Audio (RCAx2)
Video (RCAx1)
28,2kV ± 1kV
High Voltage:
Picture Tube:
A59ECF50X42
Audio Output:
2 x 15W (Music Power)
8Ω Impedance
Headphones:
8Ω Impedance
3,5mm
Accessories
supplied :
Remote Control
2 x R6 (UM3) Batteries
T.V. Stand TS2800
Dimensions:
Height:
535mm
Width:
601mm
Depth:
440mm
Net weight:
25kg
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-4 Technical guide.
ORDER No. 99-SM-001
TX-25MK1
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
500mV rms 10kΩ
1V p-p 75Ω
59cm
Panasonic CS ( U.K. ) Ltd.
WILLOUGHBY ROAD,
BRACKNELL,
BERKS.,
RG12 8FT.
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Table of Contents
Related Manuals for Panasonic TX-25MK1
Summary of Contents for Panasonic TX-25MK1
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Page 1: Specifications
Audio (21 pin) 500mV rms 1kΩ 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-4 Technical guide. Panasonic CS ( U.K. ) Ltd. WILLOUGHBY ROAD, BRACKNELL, BERKS., RG12 8FT. -
Page 2: Table Of Contents
CONTENTS SAFETY PRECAUTIONS................................2 SERVICE HINTS ..................................3 SERVICE POSITION.................................4 ADJUSTMENT PROCEDURE AND FACTORY SETTINGS .....................5 WAVEFORM PATTERN TABLE ...............................6 ALIGNMENT SETTINGS................................7 BLOCK DIAGRAMS ..................................8 PARTS LOCATION .................................12 REPLACEMENT PARTS LIST ..............................13 SCHEMATIC DIAGRAMS ...............................22 CONDUCTOR VIEWS................................26 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 Fig.2. LOCATION OF CONTROLS FOCUS SCREEN H-BOARD E-BOARD Y-BOARD Fig.3. -
Page 4: How To Move The Chassis Into Service Position
HOW TO MOVE THE CHASSIS INTO SERVICE POSITION 1. Remove the bead clamper from the mains lead and attach to the degauss coil, shown in Fig.5. 2. Hold and lift the rear of the E-PCB chassis and gently pull the chassis toward you, as shown in Fig.4. 3. -
Page 5: Adjustment Procedure
ADJUSTMENT PROCEDURE Item / Preparation Adjustments +B SET-UP 1. Set the +B voltage up as follows:- Adjust R811 so that B2 shows 148V±1V. Receive a Greyscale signal. 2. Confirm the following voltages. Set the controls :- ± 0,25V ± 0,25V ±... -
Page 6: Waveform Pattern Table
WAVEFORM PATTERN TABLE Vert Drive VFLB Vert Out IC451 Pin 2 IC451 Pin 3 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 7: Alignment Settings
ALIGNMENT SETTINGS (The figures below are nominal and used for representative purposes only.) Alignment Function Settings / Special features H-Pos Horizontal Position Optimum setting. V-Pos Vertical Position Optimum setting. H-Amp Horizontal Amplitude Optimum setting. V-Amp Vert. Amplitude Optimum setting. E/W-Amp1 EW-amplitude Optimum setting. - Page 8 VIDEO BLOCK DIAGRAM E - BOARD Y - BOARD Q906 Q908 COILS Q905 Q907 Q909 IC601 61 V IN 1 Q950 Q951 Q104 IC351 SVM OUT 34 VIDEO PROCESSOR B OUT 39 Q353 43 B IN Q105 OUTPUT 42 G IN G OUT 38 Q303 Q304...
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Page 9: Audio Block Diagram
AUDIO BLOCK DIAGRAM E - BOARD TUNER IC251 IC2101 AUDIO AUDIO OUTPUT PROCESSOR Q101 DACM_R 24 Q2102 Q252 HEADPHONE Q102 47 ANA_IN1+ DACM_L 25 L 11 Q2103 Q251 SC3_IN_L 37 SC3_IN_R 38 1 R OUT SC1_OUT_R 30 2 R IN SC1_IN_R 42 SC1_OUT_L 31 3 L OUT... - Page 10 CONTROL BLOCK DIAGRAM E - BOARD H - BOARD TUNER IC3401 VIDEO IC2101 SWITCHING AUDIO IC601 SDA 1 PROCESSOR VIDEO PROCESSOR SCL 1 SERVICE / TEST SDA 1 SCL 1 SDA 2 SCL 2 VPROT LOCAL KEYSCAN KEYS SWITCH IC1101 IC1103 MATRIX SCL 2...
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Page 11: Power Supply Block Diagram
POWER SUPPLY BLOCK DIAGRAM E - BOARD 5V SBY Q852 D867 Q855 D868 Q853 Q854 IC251 Y - BOARD AUDIO D862 T802 RL801 OUTPUT R854 IC351 T801 D801 Line Filter T551 OUTPUT 150V 200V D850 R802 Q850 DEGAUSS COIL -14V IC451 TUNER V-OUTPUT... -
Page 12: Parts Location
PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List. -
Page 13: Replacement Parts List
EASG12D531P2 SPEAKER IC1104 MN1381-R(TA) RESET ENG27506GR TUNER IC1105 MN1381-T(TA) RESET EUR511200 REMOTE CONTROL IC2101 MSP3410DPOB4 AUDIO PROCESSOR TBM8E1929 PANASONIC BADGE IC3401 TEA2114 VIDEO SWITCHING TBX8E070 POWER BUTTON FUSES TKP8E1289 LID DOOR TKU8E00360 BACK COVER F802 19181-3.15 FUSE TKY8E184-1 CABINET F8021... - Page 14 Cct Ref Parts Number Description Cct Ref Parts Number Description D801 RBV4-08 DIODE Q551 BU4508AXLB TRANSISTOR D803 1SR124-4AT82 DIODE Q552 2SC1473-RN TRANSISTOR D804 1SR124-4AT82 DIODE Q701 BC857B TRANSISTOR Q850 2SD1273PLB TRANSISTOR D805 TLP621GR-LF2 PHOTO COUPLER D806 1SR124-4AT82 DIODE Q851 BC857B TRANSISTOR D850 RU4BLF-L1...
- Page 15 Cct Ref Parts Number Description Cct Ref Parts Number Description L855 EXCELSA35T COIL JA43 ERJ8GEY0R00 S.M.CARB .125W L856 EXCELSA39V COIL JA44 ERJ6GEY0R00 S.M.CARB 0.1W L901 EXCELSA24T COIL JA45 ERJ6GEY0R00 S.M.CARB 0.1W L902 EXCELSA24T COIL JA46 ERJ8GEY0R00 S.M.CARB .125W L1103 TLTACT100K COIL JA47 ERJ6GEY0R00...
- Page 16 Cct Ref Parts Number Description Cct Ref Parts Number Description R267 ERF7ZK4R7 WOUND 7W 10% R559 ERQ12HKR33 METAL 0.5W R268 ERJ6GEYJ103 S.M.CARB 0.1W R560 ERJ6GEYJ274 S.M.CARB 0.1W 270K R269 ERQ14AJ101 METAL 0.25W R561 ERJ6GEYJ273 S.M.CARB 0.1W R271 ERJ6GEYJ103 S.M.CARB 0.1W R563 ERJ6GEYJ474 S.M.CARB...
- Page 17 Cct Ref Parts Number Description Cct Ref Parts Number Description R863 ERDS1TJ560 CARBON 0.5W R1129 ERJ6GEYJ682 S.M.CARB 0.1W R864 ERDS1TJ680 CARBON 0.5W R1130 ERJ6GEYJ103 S.M.CARB 0.1W R865 ERJ6GEY0R00 S.M.CARB 0.1W R1131 ERJ6GEYJ103 S.M.CARB 0.1W R867 ERJ6GEYJ103 S.M.CARB 0.1W R1132 ERJ6GEYJ101 S.M.CARB 0.1W R868...
- Page 18 Cct Ref Parts Number Description Cct Ref Parts Number Description 0.33µF R3002 ERJ6GEYJ471 S.M.CARB 0.1W C111 ECA1HMR33GB ELECT 10nF R3003 ERJ6GEYJ101 S.M.CARB 0.1W C117 ECUV1H103ZFX S.M. CAP 100nF R3004 ERJ6GEYJ153 S.M.CARB 0.1W C118 ECJ2VF1H104Z ELECT 350V 220µF R3005 ERJ6GEYJ101 S.M.CARB 0.1W C119 ECA1CM221GB...
- Page 19 Cct Ref Parts Number Description Cct Ref Parts Number Description 100pF 220µF C562 ECKC2H101J CERAMIC 500V C851 ECA2CM221E ELECT 160V 20µF 100µF C563 ECA2EHG220B ELECT 250V C852 ECA2CHG101E ELECT 160V 2.2µF 470pF C564 ECEA2AU2R2 ELECT 100V C853 ECKC2H471J CERAMIC 500V 2700µF 100µF C565...
- Page 20 Cct Ref Parts Number Description Cct Ref Parts Number Description 270pF C2107 ECUV1H102JCX S.M. CAP C3035 ECUV1H271JCX S.M. CAP 100nF C2108 ECUV1H102JCX S.M. CAP C3101 ECUV1H104KBX S.M. CAP 100nF C2109 ECUV1H102JCX S.M. CAP C3102 ECUV1E104KBX S.M. CAP 560pF C2110 ECUV1H102JCX S.M.
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Page 21: Schematic Diagrams
SCHEMATIC DIAGRAMS FOR MODEL TX-25MK1 (EURO-4 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 25: Conductor Views
CONDUCTOR VIEWS E-BOARD TNP8EE009 TRAN’S DIODES D558 Q3601 L8 D3102 B7 D557 Q3007 M9 D3101 B7 D556 Q3006 N10 D2304 G7 D555 Q3001 N8 D2303 G7 D554 Q2304 I7 D2161 G9 D553 Q2303 M6 D2105 G10 D552 Q2302 I7 D2104 F9 D551 Q2301 L6 D2103 G10... - Page 26 Y - BOARD TNP8EY012 TRANSISTORS Q909 Q908 Q907 Q906 Q905 Q354 Q353 Q352 Q351 DIODES D906 D905 D904 D902 D901 D364 D363 D362 D361 D360 D359 D358 D357 D356 D355 D354 TEST POINTS TPY6 B8 TPY5 D5 TPY4 E5 TPY3 F6 TPY2 E7 TPY1 G6 IC’S...
- Page 27 H - BOARD TNP8EH002 TRANSISTORS Q3401 Q3402 I.C.’S IC3401 C2...