LG KE/KL-20/21P32X Service Manual Download

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CHASSIS : MV-031A

MODEL : KE/KL-20/21P32X

MODEL :

KF-20/21P32

MODEL

CONTENT

PURITY & CONVERGENCE ADJUSTMENT ........3-2

ADJUSTMENT INSTRUCTIONS .................3-5

BLOCK DIAGRAM .............................................3-9

WIRING DIAGRAM ........................................ 3-10

TROUBLESHOOTING CHARTS .................3-11

PRINTED CIRCUIT BOARDS .......................3-16

COMPONENT LOCATION GUIDE .............3-17

SECTION 3

ELECTRICAL PART

TVCR

SERVICE MANUAL

Summary of Contents for KE/KL-20/21P32X

Page 1: ...21P32 MODEL CONTENT PURITY CONVERGENCE ADJUSTMENT 3 2 ADJUSTMENT INSTRUCTIONS 3 5 BLOCK DIAGRAM 3 9 WIRING DIAGRAM 3 10 TROUBLESHOOTING CHARTS 3 11 PRINTED CIRCUIT BOARDS 3 16 COMPONENT LOCATION GUIDE 3 17 SECTION 3 ELECTRICAL PART TVCR SERVICE MANUAL ...

Page 6: ...3 9 BLOCK DIAGRAM ...

Page 7: ...in 9 of T801 YES NO POWER NO STAND BY Replace the Fuse Check the 6V Line of MAIN 1 BOARD Check if the Fuse is O K YES NO Check Replace DB801 R801 C806 NO Check Replace D806 Q801 R807 ZD801 C814 IC801 NO Check Replace FR851 D852 C856 Q860 Q861 Q862 ZD860 ZD861 R874 Check the pin 11 of P804 LOW NO Check Replace IC857 D856 F852 C875 NO TROUBLE SHOOTING ...

Page 8: ...n 9 of P804 YES NO POWER NO MONITOR ON Go to NO POWER NO ST BY BLOCK Go to NO RASTER BLOCK Check T701 Q781 and go to NO RASTER BLOCK Check the NO POWER NO ST BY BLOCK YES NO Check the pin 10 of P804 HIGH NO Check Replace D851 L851 C860 IC851 Check the pin 10 of P804 HIGH NO ...

Page 9: ...s there about 8V at pin 6 of P805 YES NO RASTER Go to NO POWER BLOCK Go to NO PICTURE BLOCK Is there about 115V at pin 3 of T701 YES NO Check Replace F852 D850 R858 IC853 C863 Check the 8V LINE of VCD BOARD NO Check the H OUT LINE of VCD BOARD Check Replace IC501 of VCD BOARD NO Check Replace Q782 T781 R783 Q781 NO Check Replace T701 5PIN CONNECTOR FR901 FR902 NO ...

Page 10: ... IC701 Does the V A V B signal appear at pin 4 7 of P805 YES NO Check Replace FR702 D703 C703 Check Replace FR701 D702 C704 NO Is there about 185V at pin 1 of P902 YES NO PICTURE Check the CVBS line of VCD Check Replace IC901 Check screen voltage Does the RGB signal appear at pin 3 5 7 of P901A YES NO Check Replace D701 C701 T701 5PIN CONNECTOR NO NO ...

Page 11: ...appear at pin 9 of P805 YES NO SOUND Check Replace FR854 D855 IC601 Check Replace speaker speaker connector Is there about 25V at pin 5 of IC601 YES NO Check the Audio source line of VCD Check the voltage at collector of Q602 Check Replace IC601 external components of IC601 NO NO ...

Page 12: ...P No 3854VA0110A S 1 2 2003 03 14 ...

Page 13: ...P No 3854VA0110A S 2 2 2003 03 14 ...