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4) When set doesn’t display normally at RF, AV mode.

1. Replace IC611.

No

Yes

Is the IC611

normal?

No

No

Is the IC800

normal?

5) When set doesn’t display normally at Component, RGB mode.

6) When set doesn’t display normally at HDMI mode.

Is the

input voltage, IIC

communication and HV

sync normal?

1. Replace IC800.

No

Is the

input voltage, IIC

communication and HV

sync normal?

1. Replace IC1200.

No

Yes

Is the IC1200

normal?

No

No

Is the IC800

normal?

Is the

input voltage, IIC

communication and HV

sync normal?

1. Replace IC800.

No

Is the

input voltage, IIC

communication and HV

sync normal?

No

Is the IC800

normal?

1. Replace IC800.

No

Is the

input voltage, IIC

communication and HV

sync normal?

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Summary of Contents for 32LB3RS

Page 1: ...SOR A LCD MANUAL DE SERVIÇO ATENÇÃO Antes de reparar este chassis leia as PRECAUÇÕES DE SEGURANÇA contidas neste manual CHASSIS LP70A MODELO 32LB3RS 32LB3RS MB website http biz LGservice com Internal Use Only ...

Page 2: ...ÚDO 2 PRECAUÇÕES DE SEGURANÇA 3 ESPECIFICAÇÃO 6 INSTRUÇÕES DE AJUSTE 10 SOLUÇÃO DE PROBLEMAS 16 DIAGRAMA DE BLOCOS 22 VISTAS EXPLODIDAS 24 LISTA DAS VISTAS EXPLODIDAS 25 LISTA DE PEÇAS DE REPOSIÇÃO 26 DIAGRAMA ELÉTRICO ...

Page 3: ...Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a ...

Page 4: ...vely obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only a ground...

Page 5: ...not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit boa...

Page 6: ...cification Safety CE IEC Specification EMC CE IEC SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General TV Specification No Item Specification Remark 1 Video input applicable system NTSC M PAL M N 3 SYSTEM 2 Receivable Broadcasting System NTSC M PAL M N 3 SYSTEM 3 Available Channel VHF 2 13 3 SYSTEM UHF 14 69 CATV 1 125 4 Input Voltage 100 240V...

Page 7: ... RGB 42 0 227 x 0 681 x RGB Pixel Format 1366 x 768 Pixels RGB strip arrangement Coating Hard coating 3H Anti glare treatment of the front polarizer Back Light 32 20EEFL 37 20EEFL 42 20CCFL 6 Model Specification No Item Specification Remark 1 Market Central and South America 2 Broadcasting system NTSC M PAL M N 3 Available Channel BAND NTSC VHF UHF 2 69 CATV 1 125 4 Receiving system Upper Heterody...

Page 8: ...0 HDTV 1080i 12 1920 1080 28 125 50 00 74 250 HDTV 1080i 50Hz 13 1920 1080 67 432 59 94 148 35 HDTV 1080p 14 1920 1080 67 5 60 00 148 5 HDTV 1080p 15 1920 1080 56 25 50 00 148 5 HDTV 1080p 50Hz 8 RGB Input PC No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks 1 720 400 31 469 70 08 28 32 DOS 2 640 480 31 469 59 94 25 17 VESA VGA 3 640 480 37 500 75 00 31 50 VESA VGA 4 800 600 37 879 60 31...

Page 9: ...1360 768 47 700 60 00 84 62 WXGA 42XGA 50 60 12 1366 768 47 700 60 00 84 62 WXGA 42XGA 50 60 No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks 1 720 480 31 47 59 94 27 000 SDTV 480P 2 720 480 31 50 60 00 27 027 SDTV 480P 3 720 576 31 25 50 00 27 000 SDTV 576P 4 1280 720 44 96 59 94 74 176 HDTV 720P 5 1280 720 45 00 60 00 74 250 HDTV 720P 6 1280 720 37 50 50 00 74 25 HDTV 720P 50Hz 7 1920...

Page 10: ...DVI D DVI A Cable at the same time Use the proper cables below for EDID Writing 4 1 EDID Data 1 ANALOG 256 Bytes O BLOCK1 128BYTE 2 HDMI 256 Bytes O BLOCK0 128BYTE O BLOCK1 128BYTE 0 1 2 3 4 5 6 7 8 9 A B C D E F 00 00 FF FF FF FF FF FF FF 1E 6D a b 10 c 01 03 01 46 27 78 EA D9 B0 A3 57 49 9C 25 20 11 49 4B A5 6E 80 31 40 01 01 01 01 45 40 01 01 30 61 40 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88 4...

Page 11: ...attern like Fig 2 If Minimum Black Level and or Maximum White Level is not correct Select 100 Color Bar Pattern 1 Method of Auto Component Color Balance 1 Input the Component 720p 100 Color Bar MSPG 925FA model 215 pattern 65 signal into Component ZA component TA MA component 1 or 2 2 Set the PSM to Standard mode in the Picture menu 3 Press the INSTART key on R C for adjustment 4 Press the G Vol k...

Page 12: ...e Color Coordinates Using CS 1000 O LCD Color Temperature Color Coordinates Target Using CA 210 CH 9 Target Value of Brightness Color Coordinates Color Temperature Brightness High Light MIN 240Cd m2 32 WXGA AUO Color Coordinate High Light Cool X 0 276 0 002 Y 0 283 0 002 Warm X 0 313 0 002 Y 0 329 0 002 Color Temperature 11 000 K 500ºK Cool 6 500ºK 500ºK Warm 6 1 Manual white Balance Inner pattern...

Page 13: ... 0 99 0 3F 0 0 3F 3F FF Current State GREEN GAIN JB 0 99 0 3F 0 0 3F 3F FF Current State BLUE GAIN JC 0 99 0 3F 0 0 3F 3F FF Current State RED OFFSET JD 0 99 0 3F 0 0 3F 3F FF Current State GREEN OFFSET JE 0 99 0 3F 0 0 3F 3F FF Current State BLUE OFFSET JF 0 99 0 3F 0 0 3F 3F FF Current State AUTO CONFIG JU 0 99 01 The state is not Auto Adjust Condition Send NACK TUNER CONTROL SELECT PR MA 0 99 0...

Page 14: ...pe A 1 HDMI 2HDMI Side AV 0 1 BOOST 0 1 Tool Option2 Reserved 0 1 Reserved 0 1 Reserved 0 1 Area Option1 LANG CSA North Taiwan Option Default Lang CSA English Spanish Portugal North English Spanish French Taiwan English Taiwan Option2 SYS 3 SYS 4 SYS 7 SYS NTSC System Control1 System Control2 System Control3 Power off History Module Control Fan Control Option Detail list Data ...

Page 15: ... Brightness 50 Colour 50 Sharpness 50 Color Temperature Normal XD Auto Advanced Cinema Off Black level Auto Aspect Ratio 16 9 Picture Reset To set Screen Variable by each mode XD Demo To Start 9 AUDIO Sound Mode Standard Off Auto Volume Off Balance 0 TV Speaker On 10 Time Clock User control Off time Off On time Off Sleep time Off Auto sleep Off 11 OPTION Language English Area management Input Labe...

Page 16: ...ut 6 Check the VSC low pressure output Yes Doesn t the VSC Low pressure Output come out 8 Check the Vs Va voltage output circuit Yes No Doesn t the Va Va voltage output come out 7 Check the VSC Vs_ON signal Manufacture enterprise meaning of a passage No 9 Check the power board output high tension circuit No 10 Check the Z B D Module output circuit No 11 Check the Y B D Module output circuit Yes Do...

Page 17: ... power cord Yes No Is the Line Filter and PSU connected Connect a cable SC101 Yes No Is the fuse F101 of PSU normal Replace the fuse Yes No Is it that PSU and 13pin cable in VSC board connected Connect the 13pin cable After the cable connect is removed to PSU except the CN101 connection cable authorizes the AC voltage marking on manual When ST by 5V doesn t operate replace Power Board ...

Page 18: ...er connector 2 Check the LCD module On Off No No 1 Check the Main board 1 Check the Main board Yes Yes Yes 1 Change the Power board Is the inverter On or Off Is the inverter 24V on power board normal No No Is the VSC Board normal Is the P1300 1301 s output normal Inverter_On Signal is High of 5th pin in P1000 on Main board Yes Yes No No Is the link cable normal Is the Power Board normal No Is outp...

Page 19: ... specific input mode 1 Symptom The screen doen t work normally at specific input mode RF AV Component RGB HDMI 2 Check following Check the all input mode of all input display normally Check the PIP and Double Window if it display normally Re Check it Swap 3 In case of unusual situation from RF mode 1 Cable insert well Yes Yes No 1 Replace Tuner No 1 Replace the IC611 1 Replace the IC800 Is the Tun...

Page 20: ...he input voltage IIC communication and HV sync normal 1 Replace IC800 No Is the input voltage IIC communication and HV sync normal 1 Replace IC1200 No Yes Is the IC1200 normal No No Is the IC800 normal Is the input voltage IIC communication and HV sync normal 1 Replace IC800 No Is the input voltage IIC communication and HV sync normal No Is the IC800 normal 1 Replace IC800 No Is the input voltage ...

Page 21: ...C No Check the signal after IC300 Refer to circuit diagram Is all input mode no sound Is the Speaker on in Menu Is the speaker cable normal Yes Yes Yes Yes No Yes Yes No No Is IC400 operated normal Is IC402 operated normally 1 Replace IC401 No Is IC401 operated normally 1 Download the EDID data No 1 Replace IC300 No 1 Check the Tuner In Out Is only HDMI no sound Is only AV input no sound Is only R...

Page 22: ...DQS RAM_BA0 1 RAMA_0 11 RAMDQS_0 15 FRC_R G B _EVEN ODD_Out_ 0 7 FRC_DEN CLK_Out FRC_HS VS_Out Memory RAM_CAS RAS RAM_CS WE RAM_CKE CLK RAM_LDQS UDQS RAM_BA0 1 RAMA_0 11 RAMDQS_0 15 LVDS Tx 2 CH LVDS_RF_EVEN LVDS_SWING LVDS_PWR_DOWN OUT_TX_CLK OUT_TX_E FRC_R G B_EVEN ODD_Out_ 0 7 FRC_DEN CLK_Out FRC_HS VS_Out OUT_TX_D OUT_TX_C OUT_TX_B OUT_TX_A EVEN_R G B_Dat a 24 DCLK DE DHS DVS SW_RESET FRC_RX T...

Page 23: ...MEMO 23 ...

Page 24: ... 24 300 200 830 810 120 120 530 532 531 590 600 700 850 840 820 401 520 580 400 450 430 EXPLODED VIEW ...

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Page 37: ...Feb 2008 Printed in Korea P NO MFL37445202 ...

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