Panasonic TX-29RX20M-MALAYSIA Service Manual Download | Manualshive

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7.4. G Board

7.4.1. G Board (1/2)

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TX-29RX20M-MALAYSIA

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Summary of Contents for TX-29RX20M-MALAYSIA

Page 1: ...sc player and VCR only 16 PAL 60 Hz 6 0 MHz 17 PAL 60 Hz 6 5 MHz 2008 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law TX 29RX20M MALAYSIA GP41Z Chassis Receiving Channels VHF 2 12 PAL SECAM B K1 0 12 PAL B AUSTRALIA 1 9 PAL B N ZEALAND 1 12 PAL SECAM D 1 12 NTSC M JAPAN 2 13 NTSC M U S A UHF 21 69 PAL G H I SECAM G K K1 28 69 PA...

Page 2: ...ntrols 7 4 Service Hints 8 4 1 Service Position for E Board 8 4 2 Adjustment for White Balance 8 4 3 Adjustment for CRT CUT OFF 9 at zero beam current Picture Tube A68MAU085X23 68 cm 29 inches Measured diagonally 90 deflection Audio Output 20 0 W Dimensions Height 544 mm Width 762 mm Depth 494 mm Mass 40 5 kg Net Specifications are subject to change without notice Mass and dimensions shown are app...

Page 3: ...he tube After servicing make the following leakage current check to prevent the customer from being exposed to shock hazards 1 2 Leakage Current Cold Check 1 Unplug the power cord and connect a jumper between the two prongs on the plug 2 Turn on the receiver s power switch Measure the resistance value with an ohmmeter between the jumper and each exposed metallic cabinet part on the receiver such a...

Page 4: ...brated high voltage meter 1 Set the brightness to minimum 2 Use the remote to get into Service Mode 3 Measure the EHT The meter reading should indicate 31 0 1 0 kV If the meter indication is out of tolerance immediate service and correction are required to prevent the possibility of premature component failure 4 To prevent the possibility of X Radiation it is essential to use the specified picture...

Page 5: ...R G B SCL SDA CVBS IN REAR INPUTS AV1 V L R AV3 YUV V L R VCT IF IC601 V_IN CVBS OUT MON_OUT R G B R G B MON_OUT V L R EEPROM IC1101 SCL SDA A_IN IF H A AUDIO OUT V SPEAKER AUDIO AMP IC2301 V OUT TUNER PP GEOMAGNETIC GEO SIDE INPUTS AV2 V L R G PANEL KEY K REMOTE RECEIVER LED V LINE FILTER P PIP MODEL H OUT 5 TX 29RX20M MALAYSIA ...

Page 6: ...on the remote or on the TV s front panel Reset to aging mode white pattern and CHK will be displayed on screen When there is no signal in this factory mode it will change to aging mode Aging set to aging mode method POWER OFF ON 2 2 Operation on Aging mode 1 White pattern appears when reset start POWER ON 2 Press the factory set button so that change to screen color White Black Red Green Blue 2 3 ...

Page 7: ...ress channel key 1 in SERVICE 1 entry screen Key 3 4 Previous Next Service 2 Item Key 8 9 Toggle for option bit 0 7 Program up down Program position up down Volume Increment of selected item Volume Decrement of selected item OK Store Save selected item Normalize Exit service mode NOTE Service Mode 2 options bit refer to each model front cover spec 3 4 Service Mode 3 Controls To enter SERVICE 3 pre...

Page 8: ...he CRT face 4 Fix the CRT colour analyzer receiver unit to CRT face 5 Enter service mode 1 Note 1 In white balance mode key 8 REMOTE key 9 REMOTE can be used to adjust sub bright 2 Press OK after white balance adjustment to store the data Adjustment of Low Light 1 Adjustment Sub Bright so that Y 6 5 1 0 nit 2 Adjustment R CUT OFF so that X 0 241 0 005 nit 3 Adjustment G CUT OFF so that Y 0 242 0 0...

Page 9: ... as follows Brightness minimum Contrast minimum Adjustment procedure 1 Confirm the DC voltage at the indicated test points as follows TPA 15 3 35 V 0 2 TPA 16 141 V 2 TPA 17 8 2 V 0 35 TPA 18 1 85 V 0 15 TPA19 5 30 V 0 2 TPA20 220 V 15 4 4 2 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 ...

Page 10: ... through FBT pin 3 and adjust to 1200 10 µA 3 ADJUSTMENT a Set both purity magnet s knobs to top b Adjust the purity so that the markers on monitor scope of purity jig become symmetrical in horizontal direction c Only for stripe CRT correct vertical centre by purity magnet too d Set up deflection yoke so that the position of deflection yoke becomes 10 µm 5 forward on monitor scope at this time by ...

Page 11: ...nt secure magnets with magnet lock of white lacquer Beams move with rotating when static magnet is turned Rotational reduce of beams differs by angle of two magnets Therefore repeat magnet adjustment several times so that all aligned completely b YHC YV XV Adjustment Fig 2 a Adjust that static and Dynamic convergence is best with YHC VR YV VR and XV coil In case of static convergence is tilted rep...

Page 12: ... E 4 b Picture menu DYNAMIC NORMAL For Philippines Panamex model a Receive the crosshatch pattern US 6 b Picture menu DYNAMIC NORMAL 2 ADJUSTMENT a Adjust focus VR for best position Adjust focus base on no 3 line Fig 1 Crosshatch Pattern 12 TX 29RX20M MALAYSIA ...

Page 13: ...MIC Normal 3 CONFIRMATION AND ADJUSTMENT a Adjustment of 50 Hz V CENTER a Receive the monoscope pattern E11 b Adjust V POS so that centre of monoscope pattern is at CRT centre b Adjustment of 50 Hz V AMP a Receive the monoscope pattern E11 b Adjust V AMP so that C D Fig 3 is 2 0 0 1 A B Fig 3 is 2 0 0 1 c Adjustment of 50 Hz H CENTER a Receive the monoscope pattern E11 b Adjust H POS so that horiz...

Page 14: ...eive the Philips pattern US11 b Adjust V POS so that centre of Philips pattern is at 2 3 of Top and Bottom A B Fig 3c is 2 3 of viewable size b Adjustment of 50 Hz V AMP a Receive the Philips pattern US11 b Adjust V AMP so that A Fig 3b is 2 3 of viewable size c Adjustment of 50 Hz H CENTER a Receive the Philips pattern US11 b Adjust H POS so that horizontal position is at centre of CRT C D Fig 3c...

Page 15: ...t H AMP so that both edges are within 2 5 0 2 Refer to Fig 1 Fig 1 5 EW ADJUSTMENT CONFIRMATION a PREPARATION a Receive crosshatch pattern E4 b EW ADJUSTMENT a Adjust the vertical line no 2 to straight line parabola by EW AMP 1 Refer to Fig 1c Fig 1c 15 TX 29RX20M MALAYSIA ...

Page 16: ...e pattern E11 If no burst signal Set to force PAL b Set the aspect to 16 9 c Confirm that A B in Fig 1 is 4 0 cm 1 5 if not adjust V ZOOM d Receive NTSC monoscope patern US13 If no burst signal Set to force NTSC c Confirm that A B in Fig 1 is a if not adjust V ZOOM Fig 1 16 TX 29RX20M MALAYSIA ...

Page 17: ...Fig 3 is 2 0 0 1 A B Fig 3 is 2 0 0 1 Fig 3 c Adjustment of 60 Hz H CENTER a Receive the monoscope pattern US13 b Adjust H POS 60 Hz offset so that horizontal position is at centre of CRT d Adjustment of 60 Hz H AMP a Receive the monoscope pattern US13 b Adjust H AMP 60 Hz offset so that both edges are within 2 5 0 2 Refer to Fig 1 c Touch up if necessary Fig 1 e EW ADJUSTMENT a Receive crosshatch...

Page 18: ...ment of TRAPEZOID a Adjust the vertical line to straight line of both sides of vertical lines trapezoid in Fig 3 by TRAPEZ 1 Fig 3 4 Adjustment of UPPER CORNER AND LOWER CORNER a Adjust the EW at corner in Fig 4 by UPPER CORNER and LOW CORNER Fig 4 5 Adjustment of ANGLE a Adjust ANGLE so that the vertical line is orthogonal to the horizontal line Fig 5 Fig 5 18 TX 29RX20M MALAYSIA ...

Page 19: ...6 Adjustment of BOW a Adjust BOW so that the vertical lines are straight Fig 6 Fig 6 19 TX 29RX20M MALAYSIA ...

Page 20: ...5 Location of Lead Wiring 5 1 Wire Dressing 20 TX 29RX20M MALAYSIA ...

Page 21: ... DOUBLE CLAMP CLAMP IN CHASSIS ASS Y NOTE ANY MODELS NOT USING ROTATION COIL NO NEED CLAMP AT 2 3 POSITION SAFETY CAUTION POINTS 1 ALL LEAD MUST NOT TOUCH THE HIGH TEMPERATURE PARTS HEAT SINK FBT POWER CIRCUIT 2 DY LEAD MUST BE KEPT A DISTANCE MINIMUM 10 mm FROM FBT BODY 3 ANODE LEAD MUST BE KEPT A DISTANCE MINIMUM 10 mm FROM OTHER PARTS 4 AC CORD MUST BE INSERTED ACCORDING TO POLARITY AND COLOUR ...

Page 22: ...6 Conductor Views 22 TX 29RX20M MALAYSIA ...

Page 23: ...e noted 3 Coil Unit of inductance is µH unless otherwise noted 4 Test Point Test Point position 5 Earth Symbol Chassis Earth Cold Line Earth Hot 6 Voltage Measurement Voltage is measured using DC voltmeter Conditions of the measurement are the following Power Source AC SINGLE 220 240 V 50 60 Hz Receiving Signal Colour Bar signal RF All customer s controls Maximum positions 7 Number in red circle i...

Page 24: ... in the schematic diagram Take the following precautions All circuits except the Power Circuit are cold Precautions a Do not touch the hot part or the hot and cold parts at the same time or you may be shocked b Do not short circuit the hot and cold circuits or a fuse may blow and parts may break c Do not connect an instrument such as an oscilloscope to the hot and cold circuits simultaneously or a...

Page 25: ...7 1 A Board 7 1 1 A Board 1 5 1A 2A 3A 5A 4A 6A 7A 8A 25 TX 29RX20M MALAYSIA ...

Page 26: ...7 1 2 A Board 2 5 1B 2B 3B 4B 5B 6B 7B 1A 2A 3A 5A 4A 6A 7A 8A 26 TX 29RX20M MALAYSIA ...

Page 27: ...7 1 3 A Board 3 5 1C 2C 3C 4C 5C 6C 8C 7C 1B 2B 3B 4B 5B 6B 7B 27 TX 29RX20M MALAYSIA ...

Page 28: ...7 1 4 A Board 4 5 1D 2D 3D 4D 5D 7D 8D 9D 6D 1C 2C 3C 4C 5C 6C 8C 7C 28 TX 29RX20M MALAYSIA ...

Page 29: ...7 1 5 A Board 5 5 1D 2D 3D 4D 5D 7D 8D 9D 6D 29 TX 29RX20M MALAYSIA ...

Page 30: ...7 2 L Board 7 2 1 L Board 1 3 1A 2A 3A 4A 5A 30 TX 29RX20M MALAYSIA ...

Page 31: ...7 2 2 L Board 2 3 1B 2B 3B 4B 1A 2A 3A 4A 5A 31 TX 29RX20M MALAYSIA ...

Page 32: ...7 2 3 L Board 3 3 1B 2B 3B 4B 32 TX 29RX20M MALAYSIA ...

Page 33: ...7 3 V Board 7 3 1 V Board 1 2 1A 2A 3A 4A 33 TX 29RX20M MALAYSIA ...

Page 34: ...7 3 2 V Board 2 2 1A 2A 3A 4A 34 TX 29RX20M MALAYSIA ...

Page 35: ...7 4 G Board 7 4 1 G Board 1 2 1A 2A 3A 4A 5A 6A 7A 8A 9A 35 TX 29RX20M MALAYSIA ...

Page 36: ...7 4 2 G Board 2 2 1A 2A 3A 4A 5A 6A 7A 8A 9A 36 TX 29RX20M MALAYSIA ...

Page 37: ...7 5 K Board 7 5 1 K Board 37 TX 29RX20M MALAYSIA ...

Page 38: ...7 6 SW Board 7 6 1 SW Board 1 2 1A 2A 3A 38 TX 29RX20M MALAYSIA ...

Page 39: ...7 6 2 SW Board 2 2 1A 2A 3A 39 TX 29RX20M MALAYSIA ...

Page 40: ...8 Parts Locations 8 1 Packing Exploded View A 40 TX 29RX20M MALAYSIA ...

Page 41: ...8 2 Packing Exploded View B 41 TX 29RX20M MALAYSIA ...

Page 42: ...8 3 Parts Locations 42 TX 29RX20M MALAYSIA ...

Page 43: ...103ZF C 0 01 µF Z 50 V Type Allowance C Carbon C 0 25 pF F Electrolytic D 0 5 pF P Polyester Polypropylene F G 1 pF 3 S Tantalum J 5 K 10 L 15 M 20 P 100 0 Z 80 20 9 Replacement Parts List Note Printed circuit board assembly with NLA is no longer available after production discontinuation of the complete set Abbreviation of part name and description 43 TX 29RX20M MALAYSIA ...

Page 44: ...n Remarks C363 F2A1C101A310 E 100UF 16V C366 F2A1C470A310 E 47UF 16V C368 ECA2EM100B E 10UF 250V C370 F1J1H222A590 C 2200PF 50V C371 F1J1H222A590 C 2200PF 50V C372 F1J1H222A590 C 2200PF 50V C375 F0C2E154A087 P 0 15UF 250V C376 F0C2E334A039 P 0 33UF 250V C401 ECJ1VC1H560J C 56PF J 50V C404 ECQB1222JF P 2200PF 100V C406 F2A1H221A247 E 220UF 50V C407 ECJ1VC1H560J C 56PF J 50V C408 ECQB1154JF P 0 15UF...

Page 45: ...DE D362 B0AACJ000009 DIODE D363 B0AACJ000009 DIODE D364 B0AACJ000009 DIODE D365 B0AACJ000009 DIODE D366 B0AACJ000009 DIODE D367 B0AACJ000009 DIODE D402 B0HAJL000003 DIODE D503 B0AACJ000009 DIODE D504 B0AACJ000009 DIODE D507 B0ACCK000005 DIODE Ref No Part No Part Name Description Remarks D511 MA4108J DIODE D512 B0HAJL000003 DIODE D513 EU02 DIODE D515 EU02 DIODE D520 B0ACQJ000001 DIODE D552 EU02 DIO...

Page 46: ... 47OHM J 1 16W R1068 ERJ3GEYJ103 M 10KOHM J 1 16W R1105 ERJ3GEYJ103 M 10KOHM J 1 16W R1106 ERJ3GEYJ102 M 1KOHM J 1 16W R1108 ERJ3GEYJ101 M 100OHM J 1 16W R1109 ERJ3GEYJ103 M 10KOHM J 1 16W R1112 ERJ3GEYJ102 M 1KOHM J 1 16W R1114 ERJ3GEYJ151 M 150OHM J 1 16W R1115 ERJ3GEYJ101 M 100OHM J 1 16W R1131 ERJ3GEYJ220 M 22OHM J 1 16W R1132 ERJ3GEYJ220 M 22OHM J 1 16W R1140 D1AC1002A094 M 10KOHM F 1 16W R11...

Page 47: ...OHM J 1 16W R638 ERJ3GEY0R00 M 0OHM J 1 16W R640 ERJ3GEYJ471 M 470OHM J 1 16W R641 ERJ3GEY0R00 M 0OHM J 1 16W R643 ERJ3GEY0R00 M 0OHM J 1 16W Ref No Part No Part Name Description Remarks R644 ERJ3GEYJ103 M 10KOHM J 1 16W R645 ERJ3GEYJ101 M 100OHM J 1 16W R646 ERJ3GEYJ183 M 18KOHM J 1 16W R647 ERJ3GEYJ750 M 75OHM J 1 16W R650 ERJ3GEYJ472 M 4 7KOHM J 1 16W R656 ERJ3GEYJ823 M 82KOHM J 1 16W R658 ERDS...

Page 48: ...ERJ3GEY0R00 M 0OHM J 1 16W JS2341 ERJ3GEY0R00 M 0OHM J 1 16W JS2342 ERJ3GEY0R00 M 0OHM J 1 16W JS3043 ERJ3GEY0R00 M 0OHM J 1 16W JS3044 ERJ3GEY0R00 M 0OHM J 1 16W JS3045 ERJ3GEY0R00 M 0OHM J 1 16W JS3046 ERJ3GEY0R00 M 0OHM J 1 16W JS3131 ERJ3GEY0R00 M 0OHM J 1 16W JS3132 ERJ3GEY0R00 M 0OHM J 1 16W JS631 ERJ3GEY0R00 M 0OHM J 1 16W JS632 ERJ3GEY0R00 M 0OHM J 1 16W JS633 ERJ3GEY0R00 M 0OHM J 1 16W JS...

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