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[CONTENTS]

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SECTION 1.GENERAL

• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

• LOCATION OF CUSTOMER CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

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SECTION 2. AUDIO PART

• AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

• SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

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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

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SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

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SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

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SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Содержание LH-D6240A

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 5: ... 1 5 SPECIFICATIONS ...

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

Страница 7: ... 1 7 REAR PANEL ...

Страница 8: ... 1 8 Remote Control ...

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

Страница 10: ... 2 2 2 FRONT CIRCUIT 1 2 ...

Страница 11: ... 2 3 3 FRONT CIRCUIT 2 2 ...

Страница 12: ... 2 4 MEMO ...

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

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

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

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

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

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

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

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

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

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

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

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

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

Страница 26: ... 3 3 ...

Страница 27: ... 3 4 ...

Страница 28: ... 3 5 ...

Страница 29: ... 3 6 ...

Страница 30: ... 3 7 ...

Страница 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 ...

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

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

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

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

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

Страница 37: ... 3 14 ...

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

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

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

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

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

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

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

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

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

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

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

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

Страница 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 ...

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

Страница 52: ...4 5 4 6 MEMO MEMO ...

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

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

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