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Panasonic TX-21FG20R, Service Manual

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TX-21FG20R

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Summary of Contents for TX-21FG20R

Page 1: ...hita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law TX 21FG20R GP31 Chassis Colour 33 57 MHz PAL 33 6 MHz SECAM 33 75 MHz SECAM 34 42 MHz NT...

Page 2: ...ts 5 2 1 Service Position 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...

Page 3: ...sed 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 M an...

Page 4: ...C SAW AV1 AV2 YUV1 IF H OUT MSP IC2101 AUDIO AMP IC2301A V H R G B SDA SCL PRIMARY LIFE CCT QIF AUDIO DEEMP AV1 AV2 AUDIO AMP IC2301 IC851 5V 8V Antenna CRT SAW SIF SPEAKER YUV AMOUT SOUND TRAP AUDIO...

Page 5: ...justment 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 contr...

Page 6: ...FF so that X 0 235 0 010 nit 3 Adjustment G CUT OFF so that Y 0 235 0 010 nit Adjustment of High Light 1 Adjustment Sub Bright so that Y 270 nit 2 Adjustment R Drive so that X 0 265 0 010 nit 3 Adjust...

Page 7: ...5 3 High Voltage Item preparation 1 Receive the crosshatch pattern 2 Set to 0 Beam Screen VR minimum Contrast minimum Adjustment procedure 1 Connect a DC voltage meter to TPA 10 and confirm the B volt...

Page 8: ...firm OSD become blue colour 5 Set A to 2 1 0 1V by BRT CHK2 at measurement point TPL 2 Fig 4 1 Connect oscilloscope probe to TPL 2 G OUT with 10k series resistor and adjust Contrast so that B as in Fi...

Page 9: ...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 cros...

Page 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...

Page 11: ...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...

Page 12: ...3 Conductor Views 12 TX 21FG20R...

Page 13: ...4 Schematic Diagram 13 TX 21FG20R...

Page 14: ...14 TX 21FG20R...

Page 15: ...4 1 A Board 4 1 1 A Board 1 6 A1 A2 A4 A6 A5 A3 15 TX 21FG20R...

Page 16: ...4 1 2 A Board 2 6 B1 B2 B3 B6 B4 A1 A2 A4 A6 A5 A3 B5 16 TX 21FG20R...

Page 17: ...4 1 3 A Board 3 6 B1 B2 B3 B6 B4 C1 C2 C5 C4 C3 B5 17 TX 21FG20R...

Page 18: ...4 1 4 A Board 4 6 D1 D2 D4 D3 C1 C2 C5 C4 C3 18 TX 21FG20R...

Page 19: ...4 1 5 A Board 5 6 D1 D2 D4 D3 E1 E3 E2 19 TX 21FG20R...

Page 20: ...4 1 6 A Board 6 6 E1 E3 E2 20 TX 21FG20R...

Page 21: ...4 2 L Board 4 2 1 L Board 1 3 A1 A2 A3 A4 A5 21 TX 21FG20R...

Page 22: ...4 2 2 L Board 2 3 B1 B2 B3 B4 B6 B5 A1 A2 A3 A4 A5 22 TX 21FG20R...

Page 23: ...4 2 3 L Board 3 3 B1 B2 B3 B4 B6 B5 23 TX 21FG20R...

Page 24: ...5 Parts Locations 24 TX 21FG20R...

Page 25: ...6 Replacement Parts List 25 TX 21FG20R...

Page 26: ...ription Remarks C2124 ECA1CM100B E 10UF 16V C2125 ECJ2VF1C105Z C 1UF Z 16V C2128 ECA1CM101B E 100UF 16V C2138 ECJ2VC1H470J C 47PF J 50V C2139 ECJ2VC1H010C C 1PF C 50V C2140 ECJ2VC1H010C C 1PF C 50V C2...

Page 27: ...6V C877 ECA1AM471B E 470UF 10V C879 ECQV1H104JL P 0 1UF J 50V C880 ECA1CM102B E 1000UF 16V C881 ECA1CM101B E 100UF 16V C882 ECJ2VF1H104Z C 0 1UF Z 50V C883 ECJ2VF1H104Z C 0 1UF Z 50V C971 ECJ2VF1H103Z...

Page 28: ...20 ERJ6ENF7501 M 7 5KOHM 1 10W R1021 ERJ6ENF1871 M1 87KOHM 1 10W R1057 D0GD271JA017 F 270OHM J 1 10W R1058 D0GD333JA017 F 33KOHM J 1 10W R1059 D0GD222JA017 F 2 2KOHM J 1 10W R1060 D0GD683JA017 F 68KOH...

Page 29: ...9KOHM J 1 4W R580 D0GD392JA017 F 3 9KOHM J 1 10W R581 ERJ6GEYJ332 M 3 3KOHM J 1 10W R583 D0GD274JA017 F 270KOHM J 1 10W R584 D0GD563JA017 F 56KOHM J 1 10W Ref No Part No Part Name Description Remarks...

Page 30: ...140 ERJ6GEY0R00 M 0OHM J 1 10W JS3261 ERJ6GEY0R00 M 0OHM J 1 10W JS3296 ERJ6GEY0R00 M 0OHM J 1 10W JS3297 ERJ6GEY0R00 M 0OHM J 1 10W JS415 ERJ6GEY0R00 M 0OHM J 1 10W JS416 ERJ6GEY0R00 M 0OHM J 1 10W J...

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