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LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LD91A

MODEL : 32LH4000

32LH4000-ZA

North/Latin America

http://aic.lgservice.com

Europe/Africa

http://eic.lgservice.com

Asia/Oceania

http://biz.lgservice.com

Internal Use Only

Содержание 32LH4000-ZA

Страница 1: ...SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD91A MODEL 32LH4000 32LH4000 ZA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Страница 2: ...ght 2009 LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 14 BLOCK DIAGRAM 17 EXPLODED VIEW 18 SVC SHEET ...

Страница 3: ...d 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 return path...

Страница 4: ... on your body 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...

Страница 5: ...the solder 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 replac...

Страница 6: ...each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC No Item Specification Remark 1 Scree...

Страница 7: ...2 400 500 Variation 1 3 MAX MIN 3 Contrast Ratio CR 900 1300 4 CIE Color Coordinates White WX 0 279 WY 0 292 Typ RED Xr 0 638 0 03 Yr 0 334 Green Xg 0 291 Yg 0 607 Blue Xb 0 145 Yb 0 062 6 Component Video Input Y CB PB CR PR No Specification Remark Resolution H freq kHz V freq Hz 1 720x480 15 73 60 00 SDTV DVD 480i 2 720x480 15 63 59 94 SDTV DVD 480i 3 720x480 31 47 59 94 480p 4 720x480 31 50 60 0...

Страница 8: ... 08 28 321 HDCP 2 640 480 31 469 59 94 25 17 VESA HDCP 3 800 600 37 879 60 31 40 00 VESA HDCP 4 1024 768 48 363 60 00 65 00 VESA XGA HDCP 5 1280 768 47 78 59 87 79 5 WXGA HDCP 6 1360 768 47 72 59 8 84 75 WXGA HDCP 7 1366 768 47 56 59 6 84 75 WXGA HDCP 8 1280 1024 63 595 60 0 108 875 SXGA HDCP 9 1600 1200 74 07 59 98 130 375 UXGA HDCP 10 1920 1080 66 647 59 988 138 625 WUXGA HDCP 2 PC Mode No Resol...

Страница 9: ...ck OK message If Error is displayed Check connection between computer jig and set 3 Click Read tab and then load download file XXXX bin by clicking Read 4 Click Connect tab If Can t is displayed check connection between computer jig and set 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detecting...

Страница 10: ...DJ key Enter Internal ADC mode by pushing G key at 5 ADC Calibration Caution Using power on button of the Adjustment R C power on TV ADC Calibration Protocol RS232 Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Required equipment Adjustment R C 3 2 Function Check ...

Страница 11: ...button and compare Tool option and Area option value with its BOM if it is correctly same then unplug the AC cable If it is not same then correct it same with BOM and unplug AC cable For correct it to the model s module from factory JIG model Push The IN STOP KEY after completing the function inspection 4 2 DDC EDID Write RGB 128Byte Connect D sub Signal Cable to D sub Jack Write EDID Data to EEPR...

Страница 12: ...2006 10 ⓔ Model Name Hex ⓕ Checksum Changeable by total EDID data ⓖ Vendor Specific HDMI Model Name HEX EDID Table DDC Function FHD Model 0001 01 00 Analog Digital HD Model 0000 00 00 Analog Digital LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 12 For Analog EDID For HDMI EDID D sub to D sub DVI D to HDMI or HDMI to HDMI No Item C...

Страница 13: ...ps Connect RS232 Signal Cable to RS 232 Jack Write Serial number by use RS 232 Must check the serial number at the Diagnostics of SET UP menu Refer to below 5 1 Signal TABLE CMD A0h LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1F ADL EEPROM Sub Address low 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data_n Delay 20ms 5 2 Command Set Description FOS Default write 7mode data write ...

Страница 14: ... has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Check TU1200 Can you see the normal signal Check the output of TR Q1201 Can you see the normal waveform Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal waveform YES YES NO Could you measure...

Страница 15: ... This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not YES 4 Component doesn t display Check JK400 Can you see the normal waveform YES NO JK400 may have problem Replace this Jack Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal wavefo...

Страница 16: ...ard or not YES 6 HDMI doesn t display Check input connect JK600 JK601 JK602 Can you see the normal waveform Check DDC communication lines IC100 IC107 YES YES NO JK600 JK601 JK602 may have problem Replace this Jack NO After checking the Power of this chip you should decide to replace this or not YES Check HDCP communication lines IC107 NO After checking the Power of this chip you should decide to r...

Страница 17: ...PCM_A 0 7 SDDR_D 0 15 DDR2 SDRAM 512Mb IC301 TDDR_D 0 15 SDDR_A 0 12 Mstar S6 LGE3368A IC100 MP6205DH USB Power IC402 USB Power FE_TS_DATA 0 7 CI_MDI 0 7 H SCART SC1_R G B SC1 2_L R_IN FE_AM_AUDIO AV_L R_IN COMP_L R_IN PC_L R_IN FE_ VOUT DTV MNT_VOUT TDDR_A 0 12 TPA6110A IC700 Head Phon e RS 232C MAX3232CDR IC403 SPDIF SPDIF_OUT DSUB_H VSYNC HP_L ROUT L R CI_TS_DATA 0 7 PCM_D 0 7 CI_DATA 0 7 CI_AD...

Страница 18: ...ctrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufactu...

Страница 19: ... 5V_GENERAL R1504 4 7K FE_TUNER_SCL AI13 10 I9 R1505 4 7K FE_TUNER_SDA AI13 10 I9 C111 20pF C112 20pF 3 3V R1507 1 2K R1506 1 2K R1550 100 POWER_DET 3 3V_ST R1544 100 PWM0 PWM2 PWM_DIM A_DIM C1500 1uF OPT C1501 2 2uF OPT 24V 15V 12V 15V PWM2 11 AE17 PWM0 DBG_TX POWER_DET 3 3V_TUNER R146 0 R116 0 R173 0 R168 0 R100 0 C114 0 1uF C100 0 1uF R150 100 OPT R156 100 R147 100 R157 100 R166 100 R148 100 R1...

Страница 20: ...2041 0 1uF C265 0 1uF C2036 0 1uF C251 0 1uF C2001 0 1uF C289 0 1uF C253 0 1uF C2039 0 1uF C283 0 1uF C243 0 1uF C2000 0 1uF C294 0 1uF C276 0 1uF C242 0 1uF C2040 0 1uF C277 0 1uF C254 0 1uF C291 0 1uF C2032 0 1uF C2033 0 1uF C2037 0 1uF C266 0 1uF C250 0 1uF C244 0 1uF C2030 0 1uF C262 0 1uF C293 0 1uF C2029 0 1uF C273 0 1uF C256 0 1uF C279 0 1uF C271 0 1uF C260 0 1uF C284 0 1uF C263 0 1uF C267 ...

Страница 21: ...2 NC1 N2 A3 P2 A7 H8 VSSQ1 F7 LDQS A8 UDQS R2 A12 L8 CS E2 NC2 E7 VSSQ5 D8 VSSQ6 D2 VSSQ7 A7 VSSQ8 B8 VSSQ9 B2 VSSQ10 P9 VSS1 N1 VSS2 J3 VSS3 E3 VSS4 A3 VSS5 G9 VDDQ1 G7 VDDQ2 G3 VDDQ3 G1 VDDQ4 E9 VDDQ5 C9 VDDQ6 C7 VDDQ7 C3 VDDQ8 C1 VDDQ9 A9 VDDQ10 R1 VDD1 M9 VDD2 J9 VDD3 E1 VDD4 A1 VDD5 B9 DQ15 B1 DQ14 D9 DQ13 D1 DQ12 D3 DQ11 D7 DQ10 C2 DQ9 C8 DQ8 F9 DQ7 F1 DQ6 H9 DQ5 H1 DQ4 H3 DQ3 H7 DQ2 G2 DQ1 ...

Страница 22: ...DUC30S03010L_AMODIODE D415 30V ADUC30S03010L_AMODIODE D416 30V ADUC30S03010L_AMODIODE D417 30V ADUC30S03010L_AMODIODE D423 30V ADUC30S03010L_AMODIODE OPT D424 30V ADUC30S03010L_AMODIODE OPT D406 30V AMOTECH D407 30V AMOTECH D404 5 6V AMOTECH D405 5 6V AMOTECH D410 5 6V AMOTECH D411 5 6V AMOTECH D412 5 6V AMOTECH D418 5 6V ADMC5M03200L_AMODIODE OPT D419 5 6V ADMC5M03200L_AMODIODE OPT D420 5 6V ADMC...

Страница 23: ...CM_RST PCM_IRQA R500 47 5V_GENERAL CI_ADDR 12 5V_GENERAL CI_ADDR 14 CI_CD2 PCM_A 1 CI_TS_CLK PCM_A 8 CI_OE CI_MISTRT D14 CI_MDI 7 CI_MDI 1 PCM_WE CI_TS_DATA 4 C501 0 1uF 16V GND CI_TS_DATA 0 FE_TS_CLK CI_MCLKI REG PCM_A 4 CI_MISTRT PCM_A 9 FE_TS_SYN PCM_A 13 PCM_IOWR R509 10K PCM_OE CI_ADDR 5 CI_MDI 7 PCM_A 5 GND CI_TS_DATA 3 R517 10K CI_MIVAL_ERR GND PCM_REG CI_ADDR 3 CI_MDI 5 PCM_CE PCM_A 11 CI_...

Страница 24: ...HDMI_1 HPD1 Q601 2SC3052 E B C 5V_HDMI_2 HPD2 Q602 2SC3052 E B C 5V_HDMI_3 HPD3 Q603 2SC3052 E B C IC601 CAT24C02WI GT3 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC IC600 CAT24C02WI GT3 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC IC602 CAT24C02WI GT3 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC R607 0 GND 3 3V_ST HDMI_CEC Q600 SSM6N15FU OPT 3 DRAIN2 2 GATE1 1 SOURCE1 4 SOURCE2 5 GATE2 6 DRAIN1 D603 ...

Страница 25: ...6V AMOTECH L700 BLM18PG121SN1D L701 BLM18PG121SN1D C712 33pF 50V C714 33pF 50V R710 100 R709 100 R726 12 R727 12 R725 12 R728 12 R716 12 R705 12 R713 12 R719 12 C725 10uF 35V C736 10uF 35V 5V_EARPHONE Q705 2SC3052 E B C R740 0 R703 0 0 1uF C709 C710 0 1uF 16V C702 0 1uF 16V 0 1uF C715 1 6 V 0 1uF C706 1 6 V R704 100 C741 1000pF 50V C707 1000pF 50V C708 1000pF 50V C743 1000pF 50V C742 1000pF 50V C7...

Страница 26: ...Feb 2009 Printed in Korea P NO MFL50326801 ...

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