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LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LP81A

MODEL : 37LG30R(A)

37LG30R(A)-TA

website:http://biz.LGservice.com

Internal Use Only

精品图纸网

http://www.79wl.com

Содержание 37LG30A

Страница 1: ...ERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP81A MODEL 37LG30R A 37LG30R A TA website http biz LGservice com Internal Use Only 精品图纸网 http www 79wl com ...

Страница 2: ...served Only for training and service purposes C 2008 LGE Internal Use Only 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 13 TROUBLE SHOOTING 17 BLOCK DIAGRAM 22 EXPLODED VIEW 23 SVC SHEET 精品图纸网 http www 79wl com ...

Страница 3: ...te without damage of electrical shock Leakage 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...

Страница 4: ...ody by touching a known earth ground Alternatively 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 o...

Страница 5: ...joints of the two original leads If they are 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 componen...

Страница 6: ...FHD MAKER LPL 52 TFT WUXGA LCD 52 FHD MAKER SHARP 4 Operating Environment 1 Temp 0 40 deg LGE SPEC 2 Humidity 0 85 5 Storage Environment 1 Temp 20 60 deg 2 Humidity 0 85 6 Input Voltage AC100 240V 50 60Hz 1 Application Range This spec sheet is applied to the 37 42 47 52 LCD TV used LP81A chassis 2 Specification Each part is tested as below without special appointment 2 1 Temperature 25 5 C 77 9 F ...

Страница 7: ...nsion 42 mm FHD Pixel Pitch mm Back Light mm LPL HD Outline Dimension 37 877 x 516 8 x 55 5 mm with inverter Pixel Pitch 0 200 x 0 600 mm Back Light 16 EEFL mm Outline Dimension 42 983 x 576 x 51 mm with inverter Pixel Pitch 0 227 x 0 681 mm Back Light mm Outline Dimension 47 1096 x 640 x 51 mm with inverter Pixel Pitch 0 76125 x 0 76125 mm Back Light mm LPL FHD Outline Dimension 42 983 x 576 x 47...

Страница 8: ...0 450 SHARP 52 FHD 2 Color Coordinate White X Typ 0 280 Typ AUO 42 42LG30R TA Y 0 03 0 290 0 03 HD Red X 0 640 T420XW01 VB Y 0 330 Green X 0 290 Y 0 600 Blue X 0 150 Y 0 060 White X Typ 0 279 Typ LPL 37 HD 37LG30R 37LG60UR Y 0 03 0 292 0 03 LC370WXN SAA1 Red X 0 636 Y 0 335 Green X 0 284 Y 0 610 Blue X 0 144 Y 0 063 White X Typ 0 279 Typ LPL 42 42LG30RA TA Y 0 03 0 292 0 03 HD Red X 0 635 Y 0 344 ...

Страница 9: ...PL 47 FHD 47LG60FR MA Y 0 03 0 292 0 03 LC470WUE SAB1 47LG50FR TA Red X 0 640 LC470WUN SAB1 Y 0 335 Green X 0 289 Y 0 610 Blue X 0 144 Y 0 066 White X Typ 0 272 Typ SHARP 52 52LG50FR TA Y 0 03 0 277 0 03 FHD Red X 0 640 LK520D3LZ17 Y 0 330 Green X 0 280 Y 0 600 Blue X 0 150 Y 0 060 3 Contrast ratio 1000 1 1500 1 AUO 42 HD W O PC mode 840 1 800 1 1200 1 LPL 32 37 HD 800 1 1200 1 LPL 42 HD 700 1 120...

Страница 10: ... 42 inch HD Contrast Ratio Dynamic CR 9000 1 12000 1 LPL Surface Luminance LWH AV Component HDMI 360 450 Cd m2 white LWH PC 250 Cd m2 4 47 inch HD Contrast Ratio Dynamic CR 9000 1 12000 1 LPL Surface Luminance LWH AV Component HDMI 360 450 Cd m2 white LWH PC 250 Cd m2 5 42 inch FHD Contrast Ratio Dynamic CR 9000 1 12000 1 LPL TBD 15000 1 For 50 60 70 Tool Surface Luminance LWH AV Component HDMI 36...

Страница 11: ... 74 250 HDTV 1080I 50Hz 11 1920 1080 33 72 59 94 74 176 HDTV 1080I 12 1920 1080 33 75 60 00 74 25 HDTV 1080I 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 1920 1080 67 432 59 94 148 350 HDTV 1080P 15 1920 1080 67 5 60 00 148 5 HDTV 1080P 8 RGB Input Analog PC No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 640 350 31 468 70 80 25 17 EGA 2 720 400 31 469 70 08 28 32 DOS 3 640 480 3...

Страница 12: ... 122 50 SXGA Only FHD 10 1600x1200 74 077 60 0 130 375 UXGA Only FHD 11 1920x1080 66 647 59 988 138 625 WUXGA Only FHD 10 HDMI input DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 31 47 59 94 27 SDTV 480P Support not spec 2 720 480 31 5 60 27 027 SDTV 480P support not spec 3 720 576 31 25 50 27 SDTV 576P support not spec 4 1280 720 44 96 59 94 74 176 HDTV 720P 5 1...

Страница 13: ...rformed in the circumstance of 25 5 C of temperature and 65 10 of relative humidity if there is no specific designation 2 4 The input voltage of the receiver must keep 100 220V 50 60Hz 2 5 Before adjustment execute Heat Run for 15 minutes at RF no signal 3 Adjustment items 3 1 PCB assembly adjustment items Download the MSTAR main software IC801 Mstar ISP Utility 3 2 SET assembly adjustment items D...

Страница 14: ...write bin file Click 1 Read tab and then load download file XXXX bin by clicking Read 5 Click Auto 2 tab and set as below 6 click Run 3 7 After downloading check OK 4 message USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick 14 LGE Internal Use Only Copyright LG Electronics Inc All right reserved Only for training and service purposes C 2008 Doub...

Страница 15: ...ddresses in a page 0xBC Manual ADC process using Service Remocon After enter Service Mode by pushing ADJ key execute Auto RGB by pushing _ key at Auto RGB 4 2 2 Component input ADC 4 2 2 1 Component Gain Offset Adjustment7 Convert to Component in Input source Input the Component Which has 720p 60Hz YPbPr signal 100 Color Bar MSPG 925F Model 217 Pattern 65 into Component Adjust by commanding AUTO_C...

Страница 16: ...ase by exit key and release DDC adjust mode 3 Enter the adjust mode of white balance Enter the white balance adjustment mode with aging command F3 00 FF Luminance min value is 200cd ß in the cool mode For LCD 6 Adjustment of White Balance Adjustment mode Two modes Cool and Warm Medium data is automatically calibrated by the Cool data Color analyzer CA100 CA210 should be used in the calibrated ch b...

Страница 17: ...heck process 1 No power No Yes Is plug in Power cord inserted After all cables connect is removed to PSU The AC voltage marking is authorized on manual When ST By 5V is not operated replace PSU Plug in power cord No Yes Is the Line Filter and PSU connected Connect a cable to SC100 No Yes Is the fuse of PSU normal F101 Replace the fuse No Yes Is it connected that PSU and P1100 in Main Board Connect...

Страница 18: ...ere the front LED is green 2 Check process 2 No Raster No No No No No Yes Yes Yes CN700 PDP LCD Replace the VSC Does mimute discharge a Module Is the Link cable normal Is the IC801 s output normal Check the LCD Module Reconnect the Panel line cable HD P403 FHD 402 Is the inverter VaVs on Is output the normality Low High voltage except Stand by 5V Replace the Power board 精品图纸网 http www 79wl com ...

Страница 19: ...s 3 Unusual display from RF mode No Yes Yes No No Is Video output of the Tuner normal Check TU500_Pin13 Is the Input voltage normal Check Pin3 Block A Is the I2C communication normal Check Pin9 Pin10 No Yes Is the LVDS cable connected well Change the IC IC801 Check the power Cable inserts well Check the Tuner 精品图纸网 http www 79wl com ...

Страница 20: ...eck R8044 Same as Block A Same as Block A Same as Block A Check the input source Check the input source Check the input source Check the input source Change IC801 Change IC801 Change IC801 Is Video input of the Comp1 jack normal Check R8011 8012 8013 Is Video input of the Comp2 jack normal Check R8030 8032 8033 Is Video input of the Comp2 jack normal Check R8035 8037 8039 Check the input source Ch...

Страница 21: ... input is no sound Only External speaker is no sound Check the Tuner In Out Check the signal after IC600 refer to circuit diagram Is the output of IC600 normal Download the EDID data No No No No No Yes Yes Yes Yes Menu Normal Normal No No No No Yes Yes Yes Yes Replace IC600 Is the speaker on it men Set on speaker in menu Check the Speaker cable Replace IC801 Replace IC601 Is the speaker cable norm...

Страница 22: ...al Audio AMP MAIN NVM MC74HC4066 Audio SW LM324 X4 AMP SERIAL FLASH BD2041 Protect IC EDID NVM DDC HDP CEC TMDS HDMI in DDC HPD CEC TMDS HDMI in TMDS HDMI in USB AV I O Data I O 5V CVBS OUT 656 IN SW_RESE T PART_I2 C PART_I2C SW_RESE T I2S OUT LVDS MPEG RX TX MPEG RESET I2S IN 656 IN TMDS HDMI in DDC HPD CEC DDC HPD CEC CEC not through HDMI MUX direct JACK to MAIN IC DDC DDC DDC UART_Rx Tx AUDIO_S...

Страница 23: ...ght reserved Only for training and service purposes C 2008 LGE Internal Use Only 23 EXPLODED VIEW 801 803 805 806 804 802 550 830 540 821 400 521 530 522 300 120 122 510 500 901 900 121 200 精品图纸网 http www 79wl com 精品图纸网 http www 79wl com ...

Страница 24: ... 10K R329 TMDS2_RX1 TMDS3_RX0 0 01uF C311 0 01uF C312 TMDS1_RX2 5V_HDMI_3 TMDS3_RX1 TMDS2_RX2 HDMI_2 HDMI_SEL2 TMDS1_RX2 5V_HDMI_1 10K R352 TMDS3_RX1 0 01uF C309 0 R357 TMDS1_RXC 0 R355 5V_ST TMDS3_RXC 5V_HDMI_3 5V_ST 10K R301 TMDS1_RX2 3 3V_HDMI_SW 5V_HDMI_1 TMDS1_RX0 TMDS2_RX1 TMDS1_RX1 HPD_S W_1 0 R368 READY 10K R325 0 R347 CEC HDMI_SDA DDC_SCL2 5V_HDMI_2 HPD_S W_3 TMDS1_RX0 TMDS2_RX2 0 R345 KD...

Страница 25: ...2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC 10uF 16V C875 3 3V_MULTI_MST SCL_Part 3 3V_MULTI_MST IR COMP2_Pr PWM1 2 2 u F C846 2 5V_VDDM_MST 3 3V_MULTI_MST SW_R PWM0 DQS1 READY R8107 READY R8112 3 3V_MST SPI_CZ 3 3V_MULTI_MST COMP1_Pr 1 2V_VDDC_MST PC_G 2 2 u F C843 0 R8175 SBA0 LDQM E_DIMMING RASZ PC_R SPI_DO COMP2_Y COMP2_R 3 3V_MULTI_MST MNT_R_AMP 2 2 u F C839 2 2 u F C848 PWM1 CEC_C MNT_L_AMP DIS...

Страница 26: ... R1190 1 2V_VDDC_MST 0 1uF C1102 MP2355DN LF Z IC1102 3 VIN 2 BST 4 LX 1 SS 5 GND 6 FB 7 COMP 8 RUN 5V_MULTI 110 1 R1123 0 1uF C1101 10K R1189 P_5V 47uF25V C1137 0 1uF C1140 P_16V 10K R1135 P_5V AC_RST 0 R1125 P_5V 10uF 16V C1107 0 01uF C1103 RL_ON 10K R1133 10K R1134 2 2uF 25V C1125 DC_DIM 5V_MULTI 0 READY R1191 2 5V_VDDM_MST 3 3K 1 R1166 5V_ST SI4925DY 0TF492509AA Q1101 3 S2 2 G1 4 G2 1 S1 5 D2_...

Страница 27: ...Mar 2008 Printed in Korea P NO MFL41394411 精品图纸网 http www 79wl com 精品图纸网 http www 79wl com ...

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