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Adjustment of CRT VRS

 1. 

Preparation

 a. Set DY to CRT not to tilt up and down left and right deflection.
 b. Set CY to CRT and set CY magnet 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)

11

TC-21GX20P

Summary of Contents for TC-21GX20P

Page 1: ...007 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law TC 21GX20P GL1 Chassis Video Out 1 Vp p 75 Audio Out Approx 0 5V 1k High Volta...

Page 2: ...vice Hints 5 2 1 Service Position for E Board 5 2 2 Factory Mode Adjustment 5 2 3 Adjustment for White Balance 8 2 4 Adjustment for CRT CUT OFF 8 2 5 Adjustment Procedure 9 2 6 Adjustment 10 3 Conduct...

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: ...AW Rear Inputs AV1 V L R Front Inputs AV2 V L R YUV YUV CVBS4 CVBS2 IF V H V OUT H OUT R G B R G B CRT defl coil MONITOR OUT SDA SCL Audio Out Mon Out AUDIO AMP IC2302 IC601 UOC EEPROM IC1103 IC851 5V...

Page 5: ...nt a Set Timer ON 30 minutes Press remote s RECALL panel s vol down key simultaneously to select service mode b CHK should appear on right side of TV screen After few seconds CHK 1 should appear on ri...

Page 6: ...ion will be as follows f Press digit key 4 to move forward from Colour Sub Colour etc Press digit key 3 to move backward from Sub Colour Colour etc g Press volume up volume down to adjust setting h Pr...

Page 7: ...e backward from G CUT R CUT n After selecting the required mode press volume up volume down to adjust required setting o Press digit key 5 to make the AKB OFF and H Line mode first time Press digit ke...

Page 8: ...FF so that X 0 233 0 015 nit 3 Adjustment G CUT OFF so that Y 0 235 0 015 nit Adjustment of High Light 1 Adjustment Sub Bright so that Y 150 nit 2 Adjustment R Drive so that X 0 262 0 010 nit 3 Adjust...

Page 9: ...follows TPA 10 141 1 5V TPA 12 3 3 0 5V TPA 09 5 1V 2 5 2 High Voltage Item preparation 1 Receive the crosshatch pattern 2 Set to 0 Beam Screen VR minimum Contrast minimum Adjustment procedure 1 Conn...

Page 10: ...ined 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 p...

Page 11: ...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 12: ...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 13: ...3 Conductor Views 13 TC 21GX20P...

Page 14: ...4 Schematic Diagram 14 TC 21GX20P...

Page 15: ...15 TC 21GX20P...

Page 16: ...4 1 A Board 4 1 1 A Board 1 5 1A 2A 3A 5A 4A 6A 7A 8A 9A 16 TC 21GX20P...

Page 17: ...4 1 2 A Board 2 5 1B 2B 4B 3B 7B 6B 5B 8B 9B 1A 2A 3A 5A 4A 6A 7A 8A 9A 17 TC 21GX20P...

Page 18: ...4 1 3 A Board 3 5 1C 2C 4C 3C 7C 6C 5C 8C 9C 1B 2B 4B 3B 7B 6B 5B 8B 9B 18 TC 21GX20P...

Page 19: ...4 1 4 A Board 4 5 1D 2D 7D 4D 3D 8D 6D 5D 9D 1C 2C 4C 3C 7C 6C 5C 8C 9C 19 TC 21GX20P...

Page 20: ...4 1 5 A Board 5 5 1D 2D 7D 4D 3D 8D 6D 5D 9D 20 TC 21GX20P...

Page 21: ...4 2 L Board 4 2 1 L Board 1 3 1A 2A 3A 4A 5A 21 TC 21GX20P...

Page 22: ...4 2 2 L Board 2 3 1B 2B 3B 4B 5B 6B 1A 2A 3A 4A 5A 22 TC 21GX20P...

Page 23: ...4 2 3 L Board 3 3 1B 2B 3B 4B 5B 6B 23 TC 21GX20P...

Page 24: ...5 Parts Locations 24 TC 21GX20P...

Page 25: ...6 Replacement Parts List 25 TC 21GX20P...

Page 26: ...me Description Remarks C515 F1B2H331A025 C 330PF 500V C516 F2A1E102A199 E 1000UF 25V C519 F2A2C330A096 E 33UF 160V C520 F2A0J221A317 E 220UF 6 3V C550 ECQM4223JZ P 0 022UF J 400V C552 F2A2E1000023 E 1...

Page 27: ...1101 TALV35VB331K PEAKING COIL L2140 J0JKA0000038 BEAD CORE L3137 J0JKA0000024 EMI FILTER L350 J0JKA0000038 BEAD CORE L501 G0D820000005 LINEARITY COIL L550 J0JKB0000038 COIL L600 G0C100K00008 COIL L60...

Page 28: ...ER050CKF9532 M95 3KOHM F 1 2W R558 ERDS2TJ513 C 51KOHM J 1 4W R559 D0C12R7JA042 M 2 7OHM J 1W R560 ERG1SJ102E M 1KOHM J 1W R563 ERJ3GEY0R00 M 0OHM J 1 16W Ref No Part No Part Name Description Remarks...

Page 29: ...0OHM J 1 16W JSA123 ERJ3GEY0R00 M 0OHM J 1 16W JSA124 ERJ3GEY0R00 M 0OHM J 1 16W JSA3000 ERJ3GEY0R00 M 0OHM J 1 16W JSA3001 ERJ3GEY0R00 M 0OHM J 1 16W JSA3132 ERJ3GEY0R00 M 0OHM J 1 16W JSA3133 ERJ3G...

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