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SECTION 1. GENERAL

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

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

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

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

SECTION 2. AUDIO PART

• BLOCK DIAGRAM........................................................................................................................ 2-1

• SCHEMATIC DIAGRAMS ............................................................................................................ 2-3

• WIRING 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

Содержание LH-D6230

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

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

Страница 6: ... 1 7 REAR PANEL ...

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

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

Страница 9: ... 3 3 3 Test debug flow ...

Страница 10: ... 3 4 ...

Страница 11: ... 3 5 ...

Страница 12: ... 3 6 ...

Страница 13: ... 3 7 ...

Страница 14: ... 3 8 ...

Страница 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 ...

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

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

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

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

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

Страница 21: ... 3 15 ...

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

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

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

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

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

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

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

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

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

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

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

Страница 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 ...

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

Страница 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 ...

Страница 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...

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

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

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

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

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

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

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

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

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

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

Страница 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 ...

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

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