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Panasonic TX-21FJ70R, Руководство по обслуживанию, Страница: 19 / 33

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4.1.4. D BOARD (4 / 4)

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19

TX-21FJ70R

Содержание TX-21FJ70R

Страница 1: ...ita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law TX 21FJ70R GP4 Chassis Colour 33 57 MHz PAL 33 6 MHz SECAM 33 75 MHz SECAM 34 42 MHz NTSC Video Terminals AV 1 2 3 4 RAV In Video In 1 Vp p 75 Ω Audio In Approx 400mVrms Monitor Out Video Out 1 Vp p 75 Ω Audio Out Approx 400mVrms High Voltage 27 5kV 1 5 at zero beam current Picture Tube A...

Страница 2: ...for E Board 5 2 2 Factory Mode Adjustment 5 2 3 Adjustment for White Balance 6 2 4 Adjustment for CRT CUT OFF 6 2 5 Adjustment Procedure 7 2 6 PAL Colour 8 2 7 Adjustment 8 3 Conductor Views 12 3 1 D Board 1 2 12 3 2 D Board 2 2 13 4 Schematic Diagram 14 4 1 D BOARD 16 4 2 L BOARD 20 4 3 G BOARD 23 5 Parts Locations 26 6 Replacement Parts List 27 6 1 Replacement Parts List 28 CONTENTS Page Page 2 ...

Страница 3: ...ed metallic cabinet part on the receiver such as screw heads aerials connectors control shafts etc When the exposed metallic part has a return path to the chassis the reading should be between 4 MΩ and 20 MΩ When the exposed metal does not have a return path to the chassis the reading must be infinite 1 3 Leakage Current Hot Check Fig 1 1 Plug the AC cord directly into the AC outlet Do not use an ...

Страница 4: ...1 5 GP4 Chassis Block Diagram 4 TX 21FJ70R ...

Страница 5: ...Adjustment How to set To set the Factory mode press Volume 0 dac on the TV and Timer Setting 30 min on the remote control and press Volume Down button on the TV together press recall on the remote control CHK should appear on right of TV screen To movefrom CHK1 to CHK2 mode etc please follow below rotation To Set Self Check Press the Volume Down button on TV then press the Off Timer button on remo...

Страница 6: ...OFF so that X 0 243 0 005 nit 3 Adjustment G CUT OFF so that Y 0 255 0 005 nit Adjustment of High Light 1 Adjustment Sub Bright so that Y 150 nit 2 Adjustment R Drive so that X 0 260 0 003 nit 3 Adjustment B Drive so that Y 0 265 0 003 nit 2 4 Adjustment for CRT CUT OFF Preparation 1 Connect the oscilloscope probe to TPL5 2 Screen VR min 3 Set the data Sub Bright Bright 4 In service Mode at Bright...

Страница 7: ... 2dB confirm AGC at Tuner voltage drop High Voltage 1 Receive the crosshatch pattern 1 Connect a DC voltage meter to TPA 16 and confirm the B voltage is 141 0 2V 2 Set to 0 Beam Screen VR minimum 2 Connect a high frequency voltmeter to heater and confirm that voltage reads 6 3 0 24 VRMS Contrast minimum 3 Normalize the brightness and contrast Item Preparation Adjustment Procedure NTSC TINT COLOUR ...

Страница 8: ...t 21 dac 3 Channel colour set STD 4 CHK2 and press digit key 5 AKB OFF also confirm OSD become blue colour 5 Connect TPA 10 to TPA 20 6 Set A to 2 3 0 2V by BRT CHK2 at measurement point TPL 2 Fig 4 1 Connect oscilloscope probe to TPL 5 G OUT with 10kΩ series resistor and adjust Contrast so that B as in Fig 4 is 1 95 0 2V 2 Adjust Sub Colour so that waveform as in Fig 4 1 2 5 0 1V 8 TX 21FJ70R ...

Страница 9: ...d is obtained Fig 21 10 Re adjust the Low Light controls to their correct settings and make sure that a uniform white field is obtained 11 Tighten the clamp screw A in Fig 10 Convergence 1 Apply a crosshatch pattern signal and Normalize Contrast control to the maximum positions 2 Adjust Brightness until the grey position of the crosshatch pattern just becomes black 3 Adjust the Red and Blue line a...

Страница 10: ... primarily Fig 1 Purity magnet Set purity magnet that 2 magnets are TOP POSITION VRS magnet Set purity magnet 2 magnets are HORIZONTAL POSITION 2 Adjustment a Receive that Cross Hatch pattern b Adjust V SHIFT 50Hz c Set 2 magnets of horizontal position to up and down equally so that it will be the center part of CRT Fig 2 10 TX 21FJ70R ...

Страница 11: ...2 and 3 shown in Fig 11 2 The wedges should be set 120 apart from each other 3 Be certain that three wedges are firmly fixed and the Deflection Yoke is tightly clamped in place Otherwise the Deflection Yoke may shift its position and cause a loss of convergence and purity 11 TX 21FJ70R ...

Страница 12: ...3 Conductor Views 3 1 D Board 1 2 12 TX 21FJ70R ...

Страница 13: ...3 2 D Board 2 2 13 TX 21FJ70R ...

Страница 14: ...4 Schematic Diagram 14 TX 21FJ70R ...

Страница 15: ...15 TX 21FJ70R ...

Страница 16: ...4 1 D BOARD 4 1 1 D BOARD 1 4 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 14A 15A 16 TX 21FJ70R ...

Страница 17: ...4 1 2 D BOARD 2 4 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 14A 15A 1B 2B 4B 3B 5B 6B 7B 8B 9B 10B 11B 12B 13B 17 TX 21FJ70R ...

Страница 18: ...4 1 3 D BOARD 3 4 1B 2B 4B 3B 5B 6B 7B 8B 9B 10B 11B 12B 13B 1C 2C 4C 3C 5C 6C 7C 8C 9C 10C 11C 12C 18 TX 21FJ70R ...

Страница 19: ...4 1 4 D BOARD 4 4 1C 2C 4C 3C 5C 6C 7C 8C 9C 10C 11C 12C 19 TX 21FJ70R ...

Страница 20: ...4 2 L BOARD 4 2 1 L BOARD 1 3 1A 2A 3A 4A 5A 6A 7A 8A 20 TX 21FJ70R ...

Страница 21: ...4 2 2 L BOARD 2 3 1A 2A 3A 4A 5A 6A 7A 8A 1B 2B 3B 4B 5B 6B 7B 8B 21 TX 21FJ70R ...

Страница 22: ...4 2 3 L BOARD 3 3 1B 2B 3B 4B 5B 6B 7B 8B 22 TX 21FJ70R ...

Страница 23: ...4 3 G BOARD 4 3 1 G BOARD 1 3 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 23 TX 21FJ70R ...

Страница 24: ...4 3 2 G BOARD 2 3 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 1B 2B 3B 4B 5B 6B 24 TX 21FJ70R ...

Страница 25: ...4 3 3 G BOARD 3 3 1B 2B 3B 4B 5B 6B 25 TX 21FJ70R ...

Страница 26: ...5 Parts Locations 26 TX 21FJ70R ...

Страница 27: ...6 Replacement Parts List 27 TX 21FJ70R ...

Страница 28: ... ECJ2VC1H102J C 1000PF J 50V C2321 ECJ2VC1H102J C 1000PF J 50V C2322 ECJ2VC1H102J C 1000PF J 50V C2323 ECJ2VC1H102J C 1000PF J 50V C2330 ECJ2VB1H102J C 1000PF 50V C2331 F1J1H104A578 C 0 1UF 50V C2333 ECEA1HN2R2U E 2 2UF 50V C2334 ECEA1HN2R2U E 2 2UF 50V C2335 ECEA1HN2R2U E 2 2UF 50V C2336 F2A1C471A116 E 470UF 16V C2337 F1J1H104A578 C 0 1UF 50V C2340 ECJ2VF1C105Z C 1UF Z 16V C2350 ECA1EM101B E 100U...

Страница 29: ...1UF 50V C645 F1J1H104A578 C 0 1UF 50V C646 F1J1H104A578 C 0 1UF 50V C648 F1J1H104A578 C 0 1UF 50V C649 F1J1H104A578 C 0 1UF 50V Ref No Part No Part Name Description Remarks C650 F2A1C101A159 E 100UF 16V C652 F1J1H104A578 C 0 1UF 50V C654 F1J1H104A578 C 0 1UF 50V C655 F1J1H104A578 C 0 1UF 50V C656 ECA1CM100B E 10UF 16V C657 ECJ2VF1C105Z C 1UF Z 16V C658 ECJ2VF1C105Z C 1UF Z 16V C659 F1J1H104A578 C ...

Страница 30: ...IC IC851 C0DAAHF00005 IC POWER SUPPLY IC855 C0DBZGB00017 IC POWER SUPPLY IC857 C0DBAGD00034 IC POWER SUPPLY IC860 B3PAA0000261 PHOTO COUPLER COILS L002 G0C100K00008 COIL L101 G0CR68KA0030 PEAKING COIL L102 TALV35VB8R2K PEAKING COIL L1061 G0C331KA0007 PEAKING COIL L1101 EXCELSA35V COIL L2301 J0JKA0000038 BEAD CORE L2302 J0JKA0000038 BEAD CORE L2303 TLTACT100K PEAKING COIL 10U L2304 J0JKA0000038 BEA...

Страница 31: ...n Remarks R1115 ERJ6GEYJ101 M 100OHM J 1 10W R1116 ERJ6GEY0R00 M 0OHM J 1 10W R1123 ERJ6GEY0R00 M 0OHM J 1 10W R1124 ERJ6GEY0R00 M 0OHM J 1 10W R1126 ERDS2TJ101 C 100OHM J 1 4W R1131 ERJ6GEYJ220 M 22OHM J 1 10W R1132 ERJ6GEYJ220 M 22OHM J 1 10W R1140 ERJ6ENF1002 M 10KOHM 1 10W R1142 ERJ6ENF1001 M 1KOHM 1 10W R1201 ERJ6GEYJ102 M 1KOHM J 1 10W R1202 ERJ6GEYJ102 M 1KOHM J 1 10W R1203 ERJ6GEY0R00 M 0O...

Страница 32: ...W R555 ERQ14AJ2R0E F 2 0OHM J 1 4W R557 ER050CHF6802 M 68OHM 1 2W R559 ERQ1CJP2R2S M 2 2OHM J 1W Ref No Part No Part Name Description Remarks R580 ERJ6GEYJ392 M 3 9KOHM J 1 10W R581 ERJ6GEYJ563 M 56KOHM J 1 10W R585 ERJ6GEY0R00 M 0OHM J 1 10W R592 ERJ6GEYJ222 M 2 2KOHM J 1 10W R593 ERJ6GEYJ103 M 10KOHM J 1 10W R602 ERJ6GEYJ103 M 10KOHM J 1 10W R603 ERJ6GEYJ471 M 470OHM J 1 10W R606 ERJ6GEYJ752 M 7...

Страница 33: ...JA2 ERJ6GEY0R00 M 0OHM J 1 10W JA20 ERJ6GEY0R00 M 0OHM J 1 10W JA21 ERJ6GEY0R00 M 0OHM J 1 10W JA22 ERJ6GEY0R00 M 0OHM J 1 10W JA23 ERJ6GEY0R00 M 0OHM J 1 10W JA24 ERJ6GEY0R00 M 0OHM J 1 10W JA25 ERJ6GEY0R00 M 0OHM J 1 10W JA26 ERJ6GEY0R00 M 0OHM J 1 10W JA27 ERJ6GEY0R00 M 0OHM J 1 10W Ref No Part No Part Name Description Remarks JA28 ERJ6GEY0R00 M 0OHM J 1 10W JA3 ERJ6GEY0R00 M 0OHM J 1 10W JA4 E...

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