Panasonic TC-21PM50R, Service Manual

Page 1: ...l Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law TC 21PM50R GP3 Chassis Intermediate Frequency Video 38 0 MHz Sound 31 5 MHz D K K1 32 5 MHz B G 32 0 MHz I 32 5 MHz M Colour 33 57 MHz PAL 33 6 MHz SECAM 32 5 MHz B G 33 75 MHz SECAM 34 42 MHz NTSC Video Audio Terminals FAV In Video In 1 Vp p 75Ω Audio In Approx 400mVrms RAV In Video In 1 Vp p 75Ω Audio In App...

Page 2: ...or E Board 5 2 2 Factory Mode Adjustment 5 2 3 Adjustment for White Balance 6 2 4 Adjustment for CRT CUT OFF 6 Mass 24 7 kg Net Wt Specifications are subject to change without notice Mass and dimensions shown are approximate 2 5 Adjustment Procedure 7 2 6 PAL Colour 8 2 7 Adjustment 8 3 Conductor Views 11 4 Schematic Diagram 12 4 1 A BOARD 14 4 2 L BOARD 18 5 Parts Location 20 6 Replacement Parts ...

Page 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 ...

Page 4: ...1 5 GP3 Chassis Block Diagram 4 TC 21PM50R ...

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 control CHK should appear on right of TV screen To move from 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 remot...

Page 6: ...hat 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 Adjustment B Drive so that Y 0 265 0 010 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 dac press 5 in factory mode to enter vertical line and a...

Page 7: ...firm AGC at Tuner voltage drop High Voltage 1 Receive the crosshatch pattern 1 Connect a DC voltage meter to TPA 20 and confirm the B voltage is 140 5 1 5V 2 Set to 0 Beam Screen VR minimum 2 Connect a high frequency voltmeter to heater and confirm that voltage reads 6 3 0 48 VRMS Contrast minimum 3 Normalize the brightness and contrast Item Preparation Adjustment Procedure NTSC TINT COLOUR Connec...

Page 8: ...OFF Note ABL is set off in CHK2 6 Set A to 2 3 0 2V by BRT CHK2 at measurement point TPL 2 Fig 4 1 Connect oscilloscope probe to TPL 2 G OUT with 10kΩ series resistor and adjust Contrast so that B as in Fig 4 is 2 6 0 1V 2 Adjust Sub Colour so that waveform as in Fig 4 1 2 5 0 1V 3 Connect oscilloscope probe to TPL 1 R OUT with 10kΩ series resistor and confirm waveform as in Fig 5 is 2 2 7 0 4V 4 ...

Page 9: ...d is obtained Fig 7 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 at...

Page 10: ...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 10 TC 21PM50R ...

Page 11: ...4 Schematic Diagram 12 TC 21PM50R ...

Page 12: ...13 TC 21PM50R ...

Page 13: ...4 1 A BOARD 4 1 1 A BOARD 1 4 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 14A 15A 16A 17A 14 TC 21PM50R ...

Page 14: ...4 1 2 A BOARD 2 4 1A 1B 2B 3B 4B 5B 6B 7B 8B 9B 10B 11B 12B 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 14A 15A 16A 17A 15 TC 21PM50R ...

Page 15: ...4 1 3 A BOARD 3 4 1B 1C 2C 3C 4C 5C 6C 2B 3B 4B 5B 6B 7B 8B 9B 10B 11B 12B 16 TC 21PM50R ...

Page 16: ...4 1 4 A BOARD 4 4 1C 2C 3C 4C 5C 6C 17 TC 21PM50R ...

Page 17: ...4 2 L BOARD 4 2 1 L BOARD 1 2 1A 2A 3A 4A 5A 6A 7A 18 TC 21PM50R ...

Page 18: ...4 2 2 L BOARD 2 2 1A 2A 3A 4A 5A 6A 7A 19 TC 21PM50R ...

Page 19: ...5 Parts Location 20 TC 21PM50R ...

Page 20: ...6 Replacement Parts List 21 TC 21PM50R ...

Page 21: ...ERJ6GEYJ393 M 39KOHM J 1 10W R604 ERJ6GEYJ101 M 100OHM J 1 10W R605 ERJ6GEYJ101 M 100OHM J 1 10W R606 ERJ6GEYJ101 M 100OHM J 1 10W R607 ERJ6GEYJ103 M 10KOHM J 1 10W R608 ERJ6GEYJ273 M 27KOHM J 1 10W R609 ERJ6GEYJ333 M 33KOHM J 1 10W R612 ERJ6GEYJ102 M 1KOHM J 1 10W R614 ERJ6GEYJ392 M 3 9KOHM J 1 10W R617 ERJ6GEYJ391 M 390OHM J 1 10W R619 ERJ6GEYJ121 M 120OHM J 1 10W R620 ERJ6GEYJ121 M 120OHM J 1 1...

Page 22: ...Z 16V C3175 ECJ2VF1C105Z C 1UF Z 16V COILS L10 K1ZZ00001205 CONNECTOR L001 TLTACT100K PEAKING COIL 10U L002 EXC3BB221H CHIP BEAD CORE L120 TLTACTR56K PEAKING COIL L125 TALV35VB8R2K PEAKING COIL L181 TLTACT100K PEAKING COIL 10U L182 TALV35VB6R8K PEAKING COIL L183 TALV35VB5R6K PEAKING COIL Ref No Part No Part Name Description Remarks L184 TALV35VB6R8K PEAKING COIL L352 EXCELSA24T BEAD CORE L401 EXCE...

Page 23: ... No Part Name Description Remarks R502 ERJ6GEYJ182 M 1 8KOHM J 1 10W R503 ERJ6GEY0R00 M 0OHM J 1 10W R504 ERG2SJ682E M 6 8KOHM J 2W R507 ERJ6GEYJ101 M 100OHM J 1 10W R508 ERG3FJ152H M 1 5KOHM J 3W R509 ERG3FJ182H M 1 8KOHM J 3W R511 ERJ6ENF1002 M 10KOHM 1 10W R512 ERJ6ENF1152 M11 5KOHM 1 10W R513 ERQ14AJ100E F 10OHM J 1 4W R520 ERQ12AJ2R7E F 2 7OHM J 1 2W R521 ERQ12AJ2R7E F 2 7OHM J 1 2W R522 ERJ6...

Page 24: ...2B E 1000UF 16V C881 ECA1CM101B E 100UF 16V C882 ECJ2VF1H104Z C 0 1UF Z 50V C883 ECJ2VF1H104Z C 0 1UF Z 50V C971 ECJ2VF1H103Z C 0 01UF Z 50V C1101 ECJ2VF1H103Z C 0 01UF Z 50V C1103 ECJ2VC1H331J C 330PF J 50V C1104 ECA1CM101B E 100UF 16V C1105 ECJ2VF1H103Z C 0 01UF Z 50V C1125 ECEA1CKA100 E 10UF 16V C1130 ECJ2VC1H560J C 56PF J 50V C1131 ECA0JM221B E 220UF 6 3V C1132 ECJ2VC1H560J C 56PF J 50V Ref No...

Page 25: ...J 1 10W JS3120 ERJ6GEY0R00 M 0OHM J 1 10W JS3132 ERJ6GEY0R00 M 0OHM J 1 10W JS3133 ERJ6GEY0R00 M 0OHM J 1 10W JS3135 ERJ6GEY0R00 M 0OHM J 1 10W JS3141 ERJ6GEY0R00 M 0OHM J 1 10W L5 TJS3A9670 6P CONNECTOR L8 TJS3A9670 6P CONNECTOR RL801 K6B1CDA00027 RELAY S801 ESB92DA1B SWITCH S1001 EVQ11G05R SWITCH S1002 EVQ11G05R SWITCH S1003 EVQ11G05R SWITCH S1004 EVQ11G05R SWITCH S1005 EVQ11G05R SWITCH S1006 EV...