LG LH-D6230 Service Manual Download Page 26 | Manualshive

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13. MT1379 VIDEO OUTPUT WAVEFORM

1) Full colorbar signal(CVBS)

2) Y

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Summary of Contents for LH-D6230

Page 1: ...NG DIAGRAM 2 9 VOLTAGE SHEET IC TR 2 11 PRINTED CIRCUIT DIARGAMS 2 15 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 CONTENTS ...

Page 2: ...r 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 the...

Page 3: ...lacing 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 AC l...

Page 4: ...es 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 comparable co...

Page 5: ... 1 6 LOCATION OF CUSTOMER CONTROLS FRONT PANEL DISPLAY WINDOW ...

Page 6: ... 1 7 REAR PANEL ...

Page 7: ... 3 1 SECTION 3 ELECTRICAL TROUBLESHOOTING GUIDE 1 System check flow ...

Page 8: ... 3 2 2 Power check flow ...

Page 9: ... 3 3 3 Test debug flow ...

Page 10: ... 3 4 ...

Page 11: ... 3 5 ...

Page 12: ... 3 6 ...

Page 13: ... 3 7 ...

Page 14: ... 3 8 ...

Page 15: ... 3 9 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 16: ... 3 10 3 RS232 waveform during procedure Downloading 4 Flash R W enable signal during download Downloading ...

Page 17: ... 3 11 2 SDRAM CLOCK 1 MT1379 main clock is at 27MHz X501 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform ...

Page 18: ... 3 12 2 Tray close waveform 3 Tray open waveform ...

Page 19: ... 3 13 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION ...

Page 20: ... 3 14 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM ...

Page 21: ... 3 15 ...

Page 22: ... 3 16 8 FOCUS ON WAVEFORM ...

Page 23: ... 3 17 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...

Page 24: ... 3 18 10 TRACKING CONTROL RELATED SIGNAL System checking ...

Page 25: ... 3 19 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF ...

Page 26: ... 3 20 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y ...

Page 27: ... 3 21 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal ...

Page 28: ... 5 1 SECTION 5 SPEAKER PART MODEL LHS D6230T 853 852 851 850 861 854 862 A800 ...

Page 29: ... 5 2 SECTION 5 SPEAKER PART MODEL LHS D6230W 852 854 855 853 851 861 ...

Page 30: ...2 1 2 2 SECTION 2 AUDIO PART BLOCK DIAGRAM ...

Page 31: ...2 3 2 4 SHEMATIC DIAGRAMS MAIN SCHEMATIC DIAGRAM ...

Page 32: ...2 5 2 6 FRONT SCHEMATIC DIAGRAM ...

Page 33: ...ning Parts that are shaded are critical With respect to risk of fire or electrical shock NOTE 1 Shaded parts are critical for safety Replace only with specified part number 2 Voltages are DC measured with a digital voltmefer during Play mode ...

Page 34: ...2 9 2 10 WIRING DIAGRAM NOTE Warning Parts that are shaded are critical With respect to risk of fire or electrical shock ...

Page 35: ...X X 67 X X 68 X X 69 X X 70 X X 71 0 0 72 4 9 4 9 73 0 0 74 0 0 75 0 0 76 0 0 77 0 0 78 0 0 79 0 0 80 0 0 81 0 0 82 X X 83 X X 84 X X 85 3 8 3 8 86 0 0 87 X X 88 X X 89 0 0 90 4 86 4 85 91 X X 92 0 0 93 0 0 94 0 0 95 4 86 4 86 96 0 75 0 75 97 0 75 0 75 98 4 5 4 5 99 4 9 4 9 100 2 5 2 5 VOLTAGE SHEET IC TR LOC PART PIN NUM STOP DVD PLAY IC500 KIA7808 1 11 9 11 9 2 0 0 3 8 8 IC501 KIA7812 1 18 4 18 ...

Page 36: ...65 1 18 7 18 7 2 0 0 3 18 6 18 6 4 0 0 5 9 3 9 3 6 18 6 18 6 7 0 0 8 0 0 9 0 0 10 0 0 11 0 0 IC250 TDA7265 1 18 7 18 7 2 0 0 3 18 6 18 6 4 0 0 5 9 3 9 3 6 18 6 18 6 7 0 0 8 0 0 9 0 0 10 0 0 11 0 0 IC300 TDA7265 1 18 7 18 7 2 0 0 3 18 6 18 6 4 0 0 5 9 3 9 3 6 18 6 18 6 7 0 0 8 0 0 9 0 0 10 0 0 11 0 0 LOC PART PIN NUM STOP DVD PLAY IC400 TDA7265 1 18 7 18 7 2 0 0 3 18 6 18 6 4 0 0 5 9 3 9 3 6 18 6 1...

Page 37: ...2 15 2 16 PRINTED CIRCUIT DIAGRAMS MAIN POWER JACK P C BOARD SOLDER SIDE ...

Page 38: ...2 17 2 18 MAIN POWER JACK P C BOARD COMPONENT SIDE ...

Page 39: ...2 19 2 20 FRONT P C BOARD SOLDER SIDE FRONT P C BOARD COMPONENT SIDE ...

Page 40: ...3 23 3 24 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM ...

Page 41: ...3 26 3 25 SERVO SCHEMATIC DIAGRAM ...

Page 42: ...3 27 3 28 AUDIO SCHEMATIC DIAGRAM ...

Page 43: ...3 29 3 30 INTERFACE SCHEMATIC DIAGRAM ...

Page 44: ...3 31 3 32 VOLTAGE SHEET IC TR ...

Page 45: ...3 33 3 34 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE ...

Page 46: ...3 35 3 36 DVD P C BOARD COMPONENT SIDE ...

Page 47: ...01 A48 A47 305 302 303 A41 262 A26 A43 264 263 250 261 265 252 454 454 459 458 SECTION 4 EXPLODED VIEWS CABINET AND MAIN FRAME SECTION NOTE Refer to SECTION 6 REPLACEMENT PARTS LIST in order to look for the part number of each part ...

Page 48: ...4 3 4 4 Deck Mechanism Exploded View ...

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