LG LH-D6240A, Manual

Page 1: ...AGRAM 2 5 SCHEMATIC DIAGRAMS 2 7 WIRING DIAGRAM 2 17 PRINTED CIRCUIT DIARGAMS 2 19 SECTION 3 DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 3 1 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 3 9 BLOCK DIAGRAMS 3 22 DVD PART SCHEMATIC DIAGRAMS 3 23 VOLTAGE SHEET IC TR 3 31 PRINTED CIRCUIT DIAGRAM 3 33 SECTION 4 EXPLODED VIEWS 4 1 SECTION 5 SPEAKER PART 5 1 SECTION 6 REPLACEMENT PARTS LIST 6 1 ...

Page 2: ...ver be touched 4 Laser beams may damage the eyes Absolutely never permit laser beams to enter the eyes Also NEVER switch ON the power to the laser output part lens etc of the pick up if it is damaged 5 Cleaning the lens surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held by a delicate spring When cleaning t...

Page 3: ... replacing a component part first disconnect the power supply lead wire from the unit 2 All equipment measuring instruments and tools must be grounded 3 The workbench should be covered with a conductive sheet and grounded When removing the laser pick up from its conductive bag do not place the pick up on the bag This is because there is the possibility of damage by static electricity 4 To prevent ...

Page 4: ...harges sufficient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparabl...

Page 5: ... 1 5 SPECIFICATIONS ...

Page 6: ... 1 6 LOCATION OF CUSTOMER CONTROLS FRONT PANEL DISPLAY WINDOW ...

Page 7: ... 1 7 REAR PANEL ...

Page 8: ... 1 8 Remote Control ...

Page 9: ... 2 1 SECTION 2 AUDIO PART AUDIO TROUBLESHOOTING GUIDE 1 POWER SUPPUY CIRCUIT ...

Page 10: ... 2 2 2 FRONT CIRCUIT 1 2 ...

Page 11: ... 2 3 3 FRONT CIRCUIT 2 2 ...

Page 12: ... 2 4 MEMO ...

Page 13: ... BLOCK DIAGRAM 2 5 2 6 ...

Page 14: ...2 7 2 8 SCHEMATIC DIAGRAMS POWER SMPS SCHEMATIC DIAGRAM ...

Page 15: ...2 9 2 10 µ COM SCHEMATIC DIAGRAM ...

Page 16: ...2 11 2 12 FRONT POWER 2nd SCHEMATIC DIAGRAM ...

Page 17: ...2 13 2 14 DAP SCHEMATIC DIAGRAM ...

Page 18: ...2 15 2 16 AMP SCHEMATIC DIAGRAM ...

Page 19: ...2 17 2 18 WIRING DIAGRAM ...

Page 20: ...2 19 2 20 PRINTED CIRCUIT BOARD DIAGRAMS MAIN P C BOARD DIAGRAM SOLDER SIDE ...

Page 21: ...2 21 2 22 MAIN P C BOARD DIAGRAM COMPONENT SIDE ...

Page 22: ...2 23 2 24 POWER SMPS P C BOARD SOLDER SIDE ...

Page 23: ...2 25 2 26 FRONT P C BOARD DIAGRAM SOLDER SIDE ...

Page 24: ... 3 1 SECTION 3 DVD PART DVD TROUBLESHOOTING GUIDE 1 Power check flow ...

Page 25: ... 3 2 2 Test debug flow ...

Page 26: ... 3 3 ...

Page 27: ... 3 4 ...

Page 28: ... 3 5 ...

Page 29: ... 3 6 ...

Page 30: ... 3 7 ...

Page 31: ... 3 8 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 MT1379 main clock is at 27MHz X501 2 MT1336 reset is high active ...

Page 32: ... 3 9 3 RS232 waveform during procedure Downloading 4 Flash R W enable signal during download Downloading ...

Page 33: ... 3 10 2 SDRAM CLOCK 1 MT1379 main clock is at 27MHz X501 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform ...

Page 34: ... 3 11 2 Tray close waveform 3 Tray open waveform ...

Page 35: ... 3 12 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION ...

Page 36: ... 3 13 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM ...

Page 37: ... 3 14 ...

Page 38: ... 3 15 8 FOCUS ON WAVEFORM ...

Page 39: ... 3 16 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...

Page 40: ... 3 17 10 TRACKING CONTROL RELATED SIGNAL System checking ...

Page 41: ... 3 18 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF ...

Page 42: ... 3 19 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y ...

Page 43: ... 3 20 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal ...

Page 44: ...3 21 3 22 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM ...

Page 45: ...3 23 3 24 SERVO SCHEMATIC DIAGRAM ...

Page 46: ...3 25 3 26 AUDIO SCHEMATIC DIAGRAM ...

Page 47: ...3 27 3 28 VOLTAGE SHEET IC TR ...

Page 48: ...3 29 3 30 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE ...

Page 49: ...3 31 3 32 DVD P C BOARD COMPONENT SIDE ...

Page 50: ...BINET AND MAIN FRAME SECTION 351 320 305 454 455 455 454 A46 454 A26 280 275 277 455 A43 455 455 250 265 269 303 301 A47 A41 454 454 454 454 NOTE Refer to SECTION 6 REPLACEMENT PARTS LIST in order to look for the part number of each part ...

Page 51: ...4 3 4 4 DECK MECHANISM EXPLODED VIEW ...

Page 52: ...4 5 4 6 MEMO MEMO ...

Page 53: ... 5 1 SECTION 5 SPEAKER SECTION MODEL LHS D6240W 856 859 859 855 853 861 860 852 851 ...

Page 54: ... 5 2 MODEL LHS D6240T 861 854 853 860 852 851 850 ...