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LG RH265 Service Manual Download Page 44

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12. TUNER/MPX/ADC/DAC/JACK CIRCUIT DIAGRAM

Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

JK801_B_OUT

16

JK801_G_OUT

17

JK801_PB_OUT

18

JK801_PR_OUT

19

JK801_R_OUT

20

JK801_Y_OUT

21

JK802_COAXIAL_OUT

22

WAVEFORMS

Summary of Contents for RH265

Page 1: ...SERVICE MANUAL MODEL RH265 RH266 CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL RH265 RH266 SERVICE MANUAL P NO AFN35914202 SEP 2007 Website http biz lgservice com Internal Use Only ...

Page 2: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST ...

Page 3: ...NTS PRODUCT SAFETY SERVICING GUIDELINES FOR HDD DVD RECORDER PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE ES DEVICES MV3 AUTOMATIC LIGHT ADJUSTMENT PROCESS 1 5 SERVICE INFORMATION FOR EEPROM IC SETTING 1 6 UPGRADE THE MAIN LOADER PROGRAM 1 7 SPECIFICATIONS 1 8 ...

Page 4: ...the original design Be sure that the safety purpose of the polarized line plug has not been defeated 3 Soldering must be inspected to discover possible cold solder joints solder splashes or sharp solder points Be certain to remove all loose foreign particles 4 Check for physical evidence of damage or deterioration to parts and components for frayed leads or damaged insulation including the AC cord...

Page 5: ...uld be more than 1Mohm Note 1 Accessible Conductive Parts include Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors ...

Page 6: ...e keys of the remote control on the setup menu screen 2 WRITE POWER INITIALIZATION REQUEST The procedure of Write Power Initialization Request 1 Move to the lock from the Setup menu 2 When BE detects the special pattern 5 7 2 0 entered by the remote control input GUI appears as Fig 1 3 If you select YES BE sends ATAPI vender specific Command F6 below to FE and shows Fig 2 If you select NO it norma...

Page 7: ...remote control 4 To APPLY the option code after change the option press ENTER button on remote control 5 To INITIALIZE the system press CLEAR button on the remote control together with OPEN on the front panel about 2 seconds 7 To exit from the option code menu without initializing the system just turn off the power and then turn on again MODEL RH265 RH266 Disc Read Time DVD 018 Sec OK CD 021 Sec N...

Page 8: ...el 3 Write DR200 B_E F_E file on Root 2 UPGRADE FLASH MAIN LOADER 1 Put Upgrde DISC on the Set 2 After Disc Reading You can see below screen 3 Press ENTER or OK KEY You can see both current and upgrade version 4 Press PLAY KEY Start upgrading 5 After upgrading Automatically open tray Eject the Disc Reboot the Set OPTIONAL PARTS 1 B_E LG_DR200_MV3PAL ROM 2 F_E mv44 rom OPTIONAL PARTS 1 MAIN ONLY B_...

Page 9: ...prox 18 37 hours XP mode 37 75 hours SP mode 75 149 hours LP mode 112 223 hours EP mode 233 477 hours MLP mode Video recording format Sampling frequency 27MHz Compression format MPEG 2 VBR support Audio recording format Sampling frequency 48kHz Compression format Dolby Digital PLAYBACK Frequency response DVD PCM 48kHz 8Hz to 22kHz CD 8Hz to 20kHz DVD PCM 96kHz 8Hz to 44kHz Signal to noise ratio Mo...

Page 10: ...c All right reserved Only for training and service purposes LGE Internal Use Only SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 CABINET AND MAIN FRAME SECTION 2 2 2 DECK MECHANISM SECTION 2 3 3 PACKING ACCESSORY SECTION 2 4 ...

Page 11: ...ard separately supply incomprehensible Supply is possible in Location No A50 state in exploded views A50 A43 A43A 275 452 452 275 A44 A52 462 250 462 462 I O BOARD B F CABLE1 465 465 320 260 261 261 261 465 300 468 465 E C 468 A47 SMPS 273 CABLE4 468 452 CABLE2 A B E C D 463 280 286 285 D 104 101 410 468 468 410 A53 A26 CABLE11 CABLE10 A EXPLODED VIEWS 1 CABINET AND MAIN FRAME SECTION 261 261 CABL...

Page 12: ... 1012 1439 1047 1046 1014 OPTIONAL PART 1043 1045 1044 1042 1018 1018 1019 DR 10 IN SH ONLY DR 10 PT ONLY 1043 1045 A005 1030 1431 261 To Confirm DR 10A 815 NEW Difference Point Configuration To Confirm DR 10A 815 NEW 2 3 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 1026 1017 A005 1019 A46 1433 1432 ...

Page 13: ...nternal Use Only 3 PACKING ACCESSORY SECTION 808 Battery Cable Coaxial Plug Ass y 1Way BLACK Plug Ass y 2Way Bag Packing Remote Control Instruction Ass y Packing 810 Accessory Ass y Box 806 804 803 811 Plug Ass y 1Way YELLOW 813 812 801 900 802 803 FLAT CABLE 822 OPTIONAL PARTS 832 DISC 821 SCART CABLE ...

Page 14: ...DATA ADD SIGNAL BLOCK DIAGRAM 3 21 5 RF FRONT END OPTION SIGNAL BLOCK DIAGRAM 3 23 6 AV ANALOG SIGNAL BLOCK DIAGRAM 3 25 CIRCUIT DIAGRAMS 3 27 1 POWER CIRCUIT DIAGRAM 3 27 2 DDR I F CIRCUIT DIAGRAM 3 29 3 HOST I F CIRCUIT DIAGRAM 3 31 4 VIDEO I F CIRCUIT DIAGRAM 3 33 5 ATAPI CIRCUIT DIAGRAM 3 35 6 I O I F AUDIO CIRCUIT DIAGRAM 3 37 7 F END POWER CIRCUIT DIAGRAM 3 39 8 RF MOTOR CIRCUIT DIAGRAM 3 41...

Page 15: ...01 YES NO Is Vcc 13V 27V supplied to IC101 pin2 Is the D102 normal YES NO Is there about 2 5V at the IC103 pin1 Replace the IC103 NO Check or Replace the D102 Is the D128 normal Replace the D128 YES NO YES Is the IC102 normal Replace the IC102 YES NO Is the D121 normal Replace the D121 YES NO Is the D122 normal Replace the D122 YES NO Is the D125 normal Replace the D125 YES NO Is the D124 normal R...

Page 16: ...UIDE No 12V Is the 13 5V supplied to IC155 pin1 Check or Replace the D124 YES YES NO Is the IC155 pin4 H Check the DVD CTL H signal from µ com YES NO Check or Replace the IC155 No 5V Is the 5 5V supplied to IC156 pin1 Check or Replace the D125 YES YES NO Is the IC156 pin4 H Check the DVD CTRL H signal from µ com YES NO Check or Replace the IC156 ...

Page 17: ...Q164 Collector Check Q164 and Replace YES NO Is there about 12 5V at ZD151 Q164 Base Check D128 on SMPS Board and Replace YES NO Is the VCC 33V supplied to Q162 Emiter Check Q162 and Replace YES NO Is there about 0V at Q162 Base Check the TIMER_H signal from µ COM YES NO Is there about 5V at R181 and 0 7V at Q155 Base Check Q152 and Replace 2 POWER SUPPLY ON I O BOARD ELECTRICAL TROUBLESHOOTING GU...

Page 18: ...heck Q155 and Replace YES NO Is there about 5V at R180 and 0 7V at Q152 Base Check the TIMER H signal from µ COM YES NO Check Q152 and Replace No 33VT Is the VCC 33V supplied to Q161 Emiter Check D128 on SMPS Board and Replace YES YES NO Is there about 0V at Q152 Collector Check Q161 and Replace YES NO Is there about 5V at R180 and 0 7V at Q152 Base Check the TIMER H signal from µ COM YES NO Check...

Page 19: ...A on SMPS Board YES YES NO Is there about 4V 5V at the IC153 pin4 Check the PWR CTL H signal from µ COM YES NO Check the IC153 and Replace No 2 5V Is there about 3V 3 8V at the IC151 pin1 Check D154 and D123 on SMPS Board YES YES NO Is there about 4V 5V at the IC151 pin4 Check the PWR CTL H signal from µ COM YES NO Check the IC151 and Replace ELECTRICAL TROUBLESHOOTING GUIDE ...

Page 20: ...3 on SMPS Board and Replace YES YES NO Is there about 4V 5V at the IC152 pin4 Check the PWR CTL H signal from µ COM YES NO Check the IC152 and Replace No SW_5 3VA Is the VCC 5 3V supplied to Q158 Emiter Check 5 3VA on SMPS Board YES YES NO Is there about 0V at R179 and R156 Check the STANBY H signal from µ COM YES NO Check Q158 and Replace ELECTRICAL TROUBLESHOOTING GUIDE ...

Page 21: ...in40 YES YES NO IC101 pin J25 XRST Replace X200 YES NO X200 Clock oscillated 27MHz Check IC102 Flash Memory IC101 YES NO IC102 Pin 26 IC102 pin 28 IC101 DEFECT R314 R315 NO Check MECHA 3 SYSTEM CIRCUIT PART DISC not recognized Check SMPS YES YES NO Check Driver Power 5V 12V Change MEDIA TEST YES NO Check Connector 4 DISC NOT RECOGNIZED ELECTRICAL TROUBLESHOOTING GUIDE ...

Page 22: ...ignal NO NO Check IC903 pin5 6 7 8 Pin 3 4 Host CLK DATA 5 WHEN PLAYING DISC NO AUDIO OUTPUT IC903 pin14 15 Is there a signal YES Check Cable connections TV Audio mute YES NO IC801 pin34 35 37 38 Is there a signal NO IC903 pin1 16 Z_MUTE R L IC701 pin58 A_MUTE_L Check IC904 pin8 12VT Replace IC904 Check IC801 pin14 12V pin 30 5 3V pin31 32 SCL SDA NO Replace IC801 YES YES YES Replace IC903 NO IC90...

Page 23: ... Is there a signal TU701 pin 15 A_OUT Is there a signal Check IC801 pin14 12V pin30 5 3V pin31 32 SCL SDA IC801 pin8 9 Is there a signal IC801 pin40 41 Is there a signal NO YES YES YES YES 7 NO TUNER AUDIO OUTPUT Replace IC801 IC902 pin3 5 Is there a signal IC902 pin2 GND NO NO Replace IC701 YES YES Replace IC902 Check IC901 Power 3 3V 5V IC901 pin9 10 11 12 Is there a signal NO NO Replace IC901 Y...

Page 24: ...37 R532 Is there a signal YES PVM04 pin23 25 27 Is there a signal YES YES Check IC801 pin14 12V pin30 5 3V pin31 32 SCL SDA YES NO IC801 pin19 21 22 Is there a signal Replace IC801 YES Check condition RGB_Sel_Out YPbPr_Mute_L Check Cable Connection 8 NO RGB COMPONENT VIDEO SIGNAL WHEN PLAY DISC ELECTRICAL TROUBLESHOOTING GUIDE ...

Page 25: ...3 12 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MEMO ...

Page 26: ...nly for training and service purposes LGE Internal Use Only Timer MD MAIN I O Board BUTTON TUNER V A A A A 15PIN Scart Comp Audio S Video 12V 5V 3 2 1 30 Pin HDD 40 Pin 16Pin 4PIN 5 4 12 PIN SMPS POWER 1 2 3 4 5 3 13 3 14 1 CONNECTOR PICTURE WIRING DIAGRAM ...

Page 27: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 15 3 16 1 POWER 1 BLOCK DIAGRAM BLOCK DIAGRAMS ...

Page 28: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 17 3 18 2 POWER 2 BLOCK DIAGRAM ...

Page 29: ...3 19 3 20 3 RESET IF CLOCK BLOCK DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ...3 21 3 22 4 AV DIGITAL DATA ADD SIGNAL BLOCK DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ...3 23 3 24 5 RF FRONT END OPTION SIGNAL BLOCK DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 32: ...3 25 3 26 6 AV ANALOG SIGNAL BLOCK DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 33: ...ive 3 27 3 28 1 POWER CIRCUIT DIAGRAM CIRCUIT DIAGRAMS WHEN SERVICING THIS CHASSIS UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY...

Page 34: ...3 29 3 30 2 DDR I F CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ...3 31 3 32 3 HOST I F CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...1 3 33 3 34 4 VIDEO I F CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only IC101_CLK54OUT WAVEFORMS 1 ...

Page 37: ...3 35 3 36 5 ATAPI CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 38: ...3 37 3 38 6 I O I F AUDIO CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...3 39 3 40 7 F END POWER CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 40: ...3 41 3 42 8 RF MOTOR CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 41: ...3 43 3 44 9 GND POWER CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...3 45 3 46 10 MV3 DR TIMER CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ...DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only IC701_HOST_CLK_IN 2 IC701_HOST_DATA_IN 3 IC701_HOST_DATA_OUT 4 IC701_IIC_CLK 5 IC701_IIC_DATA 6 IC701_X702_OSCI 7 WAVEFORMS ...

Page 44: ...CK CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only JK801_B_OUT 16 JK801_G_OUT 17 JK801_PB_OUT 18 JK801_PR_OUT 19 JK801_R_OUT 20 JK801_Y_OUT 21 JK802_COAXIAL_OUT 22 WAVEFORMS ...

Page 45: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only IC901_AIN_DO 8 IC901_AIN_FSYNC 9 IC901_AIN_MCLKOUT 10 IC901_AIN_SCLK 11 IC903_AOUT_DO 12 IC903_AOUT_FSYNS 13 IC903_AOUT_MCLK 14 IC903_AOUT_SCLK 15 WAVEFORMS ...

Page 46: ...3 53 3 54 14 SMPS CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 55 3 56 15 HDD JUNCTION CIRCUIT DIAGRAM ...

Page 48: ...47 4mV 20 41 3mV 73 9mV 42 1mV 21 69 2mV 74 7mV 40 7mV 22 61 7mV 64 4mV 42 1mV 23 71 3mV 65 7mV 42 4mV 24 61 4mV 67 4mV 41 9mV 25 46 6mV 64 3mV 42 9mV 26 46 4mV 4 93 4 84 27 50 4mV 1 67 1 62 28 42 4mV 1 91 1 82 29 56 1mV 1 9 1 62 30 53 8mV 1 64 1 63 31 43 8mV 2 34 2 31 32 51 8mV 69 2mV 48 1mV 33 47 6mV 61 7mV 48 6mV 34 55 1mV 71 3mV 48 2mV 35 53 7mV 61 4mV 48 2mV 36 51 5mV 4 13 4 01 37 51 9mV 2 36...

Page 49: ... 7mV 46 7mV 33 44 8mV 1 39 1 71 34 57 1mV 3 23 3 29 35 59 3mV 54 5mV 46 7mV 36 44 5mV 49 1mV 43 8mV 37 45 6mV 53 7mV 42 4mV 38 48 7mV 50 3mV 1 9 39 44 2mV 50 1mV 41 9mV 40 43 1mV 52 5mV 1 85 41 47 6mV 46 3mV 2 12 42 54 1mV 47 5mV 42 7mV 43 53 2mV 51 3mV 42 6mV 44 55 9mV 51 5mV 46 8mV 45 60 4mV 4 87 4 86 46 51 5mV 2 18 2 33 47 63 2mV 3 26 3 3 48 44 9mV 1 7 1 71 49 49 7mV 3 26 3 29 50 58 2mV 51 3mV ...

Page 50: ...1 73 1 74 45 CK 42 7mV 1 18 1 1 46 CK 38 3mV 1 21 1 17 47 UDM 45 1mV 1 19 1 14 48 VSS 43 1mV 59 3mV 57 5mV 49 VREF 42 2mV 1 19 1 17 50 NC 45 6mV 61 3mV 59 4mV 51 UDQS 42 3mV 1 15 1 14 52 VSSQ 35 8mV 61 5mV 64 2mV 53 NC 36 7mV 64 5mV 53 2mV 54 DQ8 38 2mV 1 22 1 17 55 VDDQ 42 4mV 2 42 2 41 56 DQ9 41 3mV 1 27 1 25 57 DQ10 41 6mV 1 21 1 23 58 VSSQ 40 4mV 55 1mV 64 3mV 59 DQ11 43 8mV 1 29 1 46 60 DQ12 ...

Page 51: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 63 3 64 1 MAIN P C BOARD TOP VIEW PRINTED CIRCUIT DIAGRAMS ...

Page 52: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 65 3 66 MAIN P C BOARD BOTTOM VIEW ...

Page 53: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 67 3 68 2 I O P C BOARD TOP VIEW ...

Page 54: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 69 3 70 I O P C BOARD BOTTOM VIEW ...

Page 55: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 71 3 72 3 POWER P C BOARD TOP VIEW BOTTOM VIEW ...

Page 56: ...ight 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 73 3 74 4 TIMER KEY P C BOARD TOP VIEW BOTTOM VIEW 5 HDD JUNCTION P C BOARD TOP VIEW BOTTOM VIEW ...

Page 57: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 75 3 76 MEMO MEMO ...

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