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LG 19LH2000 Service Manual Download Page 38

Check technical
information
- Fix information
- S/W Version

N

Y

Technical 

information?

Check
input
signal

Signal
input?

Y

N

External Input and

Component

Recognition error

Check and fix 
external device/cable

RGB,HDMI/
DVI, Optical

Recognition error

Replace Main B/D

Replace Main B/D

Fix in

accordance

with technical

information

D. Function error

External device recognition error 

Established

date 

Revised date 

2008. 3 .05

11/13

LCD  TV

Error

symptom

Standard Repair Process

11

Summary of Contents for 19LH2000

Page 1: ...Y PRECAUTIONS IN THIS MANUAL CHASSIS LD91A MODEL 19LH2000 19LH2000 ZA MODEL 19LH2020 19LH2020 ZC North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL50326813 0904 REV00 ...

Page 2: ...ernal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 10 EXPLODED VIEW 15 SVC SHEET ...

Page 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...

Page 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...

Page 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...

Page 6: ...arts 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 Screen Device 19 wide color display module LCD 2 Aspect Ratio 16 9 3 LCD Module ...

Page 7: ...E Color Coordinates White WX 0 313 WY 0 392 Typ RED Xr 0 642 0 03 Yr 0 334 Green Xg 0 304 Yg 0 608 Blue Xb 0 146 Yb 0 073 1 Standard Test Condition The unit has been ON 2 Stable for approximately 30 minutes in a dark environment at 25 2ºC 3 The values specified are at approximate distance 50Cm from the LCD surface 4 Ta 25 2 C VLCD 12 0V fV 60Hz Dclk 74 25MHz VBR_A 1 65V ExtVBR_B 100 No Item Specif...

Page 8: ... 720p 9 1280x720 45 00 60 00 HDTV 720p 10 1920x1080 31 25 50 00 HDTV 1080i 11 1920x1080 33 75 60 00 HDTV 1080i 12 1920x1080 33 72 59 94 HDTV 1080i 13 1920x1080 56 250 50 HDTV 1080p 14 1920x1080 67 5 60 HDTV 1080p No Specification Proposed Remark Resolution H freq kHz V freq Hz Pixel Clock MHz 1 720 400 31 468 70 08 28 321 For only DOS mode 2 640 480 31 469 59 94 25 17 VESA Input 848 480 60Hz 852 4...

Page 9: ...280 1024 63 595 60 0 108 875 SXGA HDCP FHD model 8 1920 1080 67 5 60 00 138 625 WUXGA HDCP FHD model 2 PC Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 2 720 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV...

Page 10: ...k 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 ...

Page 11: ...nternal 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 1 Check displa...

Page 12: ... 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 EEP...

Page 13: ...1F 46 10 00 0A 20 20 20 20 20 20 d 70 d 01 e 80 02 03 20 F1 4E 10 1F 84 13 05 14 03 02 12 20 21 90 22 15 01 26 15 07 50 09 57 07 f A 0 f 80 18 71 1C 16 20 58 2C 25 00 7E 8A 42 00 B0 00 9E 01 1D 00 80 51 D0 0C 20 40 80 35 00 7E 8A C0 42 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 D0 7E 8A 42 00 00 18 02 3A 80 18 71 38 2D 40 58 2C E0 45 00 7E 8A 42 00 00 1E 01 1D 80 D0 72 1C 16 20 F0 10 2C 25 80 7E...

Page 14: ...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 ...

Page 15: ... 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 manufacturer IMPORTA...

Page 16: ...V_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 R160...

Page 17: ...41 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 0 ...

Page 18: ...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 G8...

Page 19: ...C30S03010L_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 ADMC5M...

Page 20: ..._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_TS...

Page 21: ...MI_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 MM...

Page 22: ... 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 C744...

Page 23: ......

Page 24: ... 12 Mstar S6 LGE3368A No DVIX IC100 MP6211DH 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 Phone 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_ADDR 0 7 AUDIO IN DGB_TX RX HPD1 2 3 HDMI_CEC TMDS 0 7 Data ...

Page 25: ...DD GCLK1 6 VGH VGL VGH VDD SOE POL Left mini LVDS 8Bit Right mini LVDS 8Bit LVDS 10Bit FRC IIC FRC Reset VCOM GAMMA FRC_3 3V FRC_1 8V FRC_1 26V DC DC Converter BD9130 IC301 LDO SC4215 IC303 FRC_1 8V FRC_1 26V FRC_3 3V VCC LVDS 10Bit From Main Board FRC IIC FRC Reset Panel 12V To Left LCD Panel To Right LCD Panel VST VDD_EVEN VDD_ODD CLK1 6 Shifted level HIGH VGH Low VGL VCC VDD VGH VGL VST VDD_EVE...

Page 26: ... VDD VGL VCC VDD GSP GSC GOE SOE POL VCOM GAMMA DC DC Converter BD9130 IC301 LDO SC4215 IC303 FRC_1 8V FRC_1 26V FRC_3 3V VCC VGHM Left mini LVDS 8Bit Right mini LVDS 8Bit LVDS 10Bit FRC IIC FRC Reset FRC_3 3V FRC_1 8V FRC_1 26V LVDS Wafer P 10 1 LVDS 10Bit FRC IIC FRC Reset Panel 12V mini LVDS Wafer P 40 1 To Left LCD Panel To Right LCD Panel VCC VDD VGHM VGL GSP GSC GOE SOE POL VCOM GAMMA VCC VD...

Page 27: ...nal device color error 5 6 B Power error No power 6 7 Off when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error No response in remote controller key error recording error memory error 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect ...

Page 28: ...Normal voltage Y Replace Inverter or module N Repair Power Board or parts End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 2008 3 05 1 13 LCD TV Error symptom A Video error No video Normal audio First of all Check whether all of cables between ...

Page 29: ...Power Board 5V 12V 20V or 24V No Video No audio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio Established date Revised date 2008 3 05 2 13 LCD TV Error symptom 2 ...

Page 30: ...layer Set Top Box Different maker TV etc SVC Bulletin Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close Menu Setup Booster By using Digital signal level meter By using Diagnostics menu on OSD Menu Setup Diagnostic Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Norma...

Page 31: ...error Check external device and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error N Y End Replace module Request repair for external device cable Replace T Con Board And Adjust VCOM N Y Color error LGD Module Only Other Module Color error Check Test pattern Standard Repair Process Established date...

Page 32: ...I by connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Mai...

Page 33: ...lace Main B D N Y Normal Check ST BY 5V Replace Power B D N Y Normal voltage Replace Power B D Y Standard Repair Process Established date Revised date 2008 3 05 6 13 LCD TV Error symptom 09 years new model apply mechanical power switch to reduce power consumption in stand by status If mechanical power switch off Doesn t turn on by remote control Doesn t appear LED light Please refer to the A21 Pag...

Page 34: ...er off List Explanation Normal POWEROFF_REMOTEKEY Power off by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of...

Page 35: ...B 20V or 24V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video Disconnection Established date Revised date 2008 3 05 8 13 LCD TV Error symptom Standard Repair Process 8 ...

Page 36: ...dio Discontinuation Noise only for External Input Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V or 24V Replace Main B D In case of External Input signal error ...

Page 37: ...nection Connector solder Normal operating Check B 5V On Main B D Normal Voltage Close N N Check 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem Check IR Output signal Normal Signal N Y Repair Replace IR B D N Replace Main B D Y Y N Check R C Operation Normal operating Y Check Repair Cable connection Connector solder Normal operating Close N Check Replace Assembly...

Page 38: ...t and Component Recognition error Check and fix external device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 2008 3 05 11 13 LCD TV Error symptom Standard Repair Process 11 ...

Page 39: ...nformation and then proceed as shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise With Inverter ...

Page 40: ... damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 2008 3 05 13 13 LCD TV Error symptom Standard Repair Process 13 ...

Page 41: ...roblem No OSD 3 4 3 Digital TV 5 4 Analog TV 6 5 AV Scart CVBS S Video 7 12 6 Component 13 7 RGB D SUB 14 15 8 HDMI 16 17 9 Audio Problem All Input 18 10 Digital TV 19 11 Analog TV 20 12 AV Component RGB HDMI PC HDMI DTV 21 26 13 AV Audio out No Audio Headphone SPDIF 27 30 14 USB Remocon Problem USB no connect Remocon 31 33 15 Intelligent Sensor Intelligent Sensor 34 ...

Page 42: ...lace MAIN B D IC801 YES NO MAIN B D L813 1 26V Replace MAIN B D IC805 YES NO MAIN B D L805 3 3V Replace MAIN B D IC806 YES NO Check MAIN B D X100 Clock 12MHz Replace MAIN B D IC100 YES NO Replace MAIN B D IC102 NAND FLASH YES Replace MAIN B D IC103 Serial Flash NO Replace MAIN B D IC300 IC301 DDR2 Memory NO Replace MAIN B D IC100 NO Making Revision 2009 2 1 1 34 LCD TV Symptom Power Up Boot Fail 2...

Page 43: ... Replace MAIN B D IC103 Serial Flash NO Replace MAIN B D IC300 IC301 DDR2 Memory NO Replace MAIN B D IC100 NO Making Revision 2009 2 1 LCD TV Symptom Power Up Boot Fail 19 22LH2000 2 34 P801 Pin 5 6 Voltage Level 5V YES P801 Pin 1 2 15V MAIN B D L803 3 3V YES MAIN B D L813 1 26V YES MAIN B D L805 3 3V YES Check MAIN B D X100 Clock 12MHz YES Replace MAIN B D IC102 NAND FLASH YES ...

Page 44: ... YES NO YES NO YES Replace MAIN B D Q802 MAIN B D L1300 12V Replace MAIN B D Q806 NO Replace Main Board YES P800 Pin 13 14 12V P800 Pin 17 18 24V Check LVDS Cable OK YES Replace LVDS Cable NO Making Revision 2009 2 1 LCD TV Symptom No OSD 26 42LH2000 32 47LH3000 LH4000 3 34 ...

Page 45: ... Replace Power Board YES NO YES NO YES Replace MAIN B D Q802 MAIN B D L1300 12V Replace MAIN B D Q806 NO Replace Main Board YES P801 Pin 1 2 15V Check LVDS Cable OK YES Replace LVDS Cable NO Making Revision 2009 2 1 LCD TV Symptom No OSD 19 22LH2000 4 34 ...

Page 46: ...Replace MAIN B D IC809 YES NO Replace MAIN B D IC808 MAIN B D IC804 Pin 2 1 2V Replace MAIN B D IC804 YES NO YES MAIN B D R1210 Clock NO Replace MAIN B D TU1200 Making Revision 2009 2 1 LCD TV Symptom Digital TV Video Problem 26 42LH2000 32 47LH3000 LH4000 5 34 ...

Page 47: ...blem Check RF Cable MAIN B D L1201 5V YES MAIN B D L1202 3 3V NO Replace MAIN B D IC809 YES NO Replace MAIN B D IC808 MAIN B D IC804 Pin 2 1 2V Replace MAIN B D IC804 YES NO YES MAIN B D R1210 Clock NO Replace MAIN B D TU1200 26 42LH2000 32 47LH3000 LH4000 6 34 ...

Page 48: ...100 Check Replace MAIN B D JK1100 YES NO Check MAIN B D R1117 Video Signal NO YES Check MAIN B D C210 Video Signal Replace MAIN B D C210 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV1 Scart CVBS No Video Problem 26 42LH2000 32 47LH3000 LH4000 7 34 ...

Page 49: ... B D JK1100 Replace MAIN B D JK1100 YES NO YES Check MAIN B D C200 RED C201 GREEN C202 BLUE Video Signal Replace MAIN B D C200 C201 C202 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV1 Scart RGB No Video Problem 26 42LH2000 32 47LH3000 LH4000 8 34 ...

Page 50: ... D JK1101 Check Replace MAIN B D JK1101 YES NO Check MAIN B D R1133 Video Signal NO YES Check MAIN B D C211 Video Signal Replace MAIN B D C211 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV2 No Video Problem 26 42LH2000 32 47LH3000 LH4000 9 34 ...

Page 51: ... JK402 Check Replace MAIN B D JK402 YES NO Check MAIN B D R400 Video Signal NO YES Check MAIN B D C217 Video Signal Replace MAIN B D C217 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV3 CVBS No Video Problem 26 42LH2000 32 47LH3000 LH4000 10 34 ...

Page 52: ...k the Trouble Shooting Guide Analog TV No video YES Check MAIN B D R1205 Video Signal NO Replace MAIN B D Q1205 YES Check MAIN B D C1107 Video Signal NO MAIN B D JK1100 Check YES Making Revision 2009 2 1 11 34 LCD TV Symptom AV1 No Video Out Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 53: ...Is it supported Check the SCART Cable YES YES Check MAIN B D C1122 Video Signal NO MAIN B D JK1101 Check YES Replace MAIN B D IC 100 Making Revision 2009 2 1 12 34 LCD TV Symptom AV2 No Video Out Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 54: ...B D JK400 YES NO Check MAIN B D R419 Video Signal NO YES Check MAIN B D C209 C215 Y C216 Pb C214 Pr Video Signal Replace MAIN B D C209 or C214 or C215 or C216 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 13 34 LCD TV Symptom Component No Video No Color Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 55: ... P400 YES NO NO YES Check MAIN B D C208 Video R246 HSYNC R245 VSYNC Replace MAIN B D C208 or R246 or R247 NO Replace MAIN B D IC 100 YES MAIN B D P400 Pin 2 Video signal R437 has Vsync R440 has Hsync Making Revision 2009 2 1 14 34 LCD TV Symptom RGB No Video Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 56: ...00 YES NO NO YES Check MAIN B D C212 RED C207 GREEN C213 BLUE Video Signal Replace MAIN B D C212 or C207 or C213 NO Replace MAIN B D IC 100 YES MAIN B D P400 Pin 3 BLUE Pin 2 GREEN Pin 1 RED Video signal Making Revision 2009 2 1 15 34 LCD TV Symptom RGB No Color Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 57: ... ADJUST MENU EDID OK YES Download EDID Refer to Adjustment Spec NO NO Replace MAIN B D IC107 HDCP KEY Making Revision 2009 2 1 16 34 LCD TV Symptom HDMI 1 3 All No Video Problem HDMI1 ALL MODELS HDMI2 Except for 19 22LH20 HDMI3 Except for 19 22LU40 19 22LU50 19 22LH20 26 42LH2000 32 47LH3000 LH4000 ...

Page 58: ...0 HDMI1 JK601 HDMI2 JK602 HDMI3 YES _ This case is that HDMI Video doesn t display at the some HDMI input not all Making Revision 2009 2 1 17 34 LCD TV Symptom HDMI1 or 2 or 3 No Video Problem HDMI1 ALL MODELS HDMI2 Except for 19 22LH20 HDMI3 Except for 19 22LU40 19 22LU50 19 22LH20 26 42LH2000 32 47LH3000 LH4000 ...

Page 59: ...le NO CHECK MAIN B D JK700 or JK701 YES Replace MAIN B D JK700 or JK701 NO _ If headphone is connected Speaker sound doesn t work Replace MAIN B D IC803 NO YES MAIN B D L700 1 8V MAIN B D Check R720 R721 R722 Signal YES Replace MAIN B D IC100 NO Replace MAIN B D IC701 NO Making Revision 2009 2 1 18 34 LCD TV Symptom All Source no Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 60: ...Digital TV Video OK YES Replace MAIN B D IC 100 Making Revision 2009 2 1 19 34 LCD TV Symptom Digital TV No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 61: ...Signal SIF Replace MAIN B D TU1200 NO Analog TV Video OK YES Check MAIN B D C231 Signal SIF NO Replace MAIN B D IC100 YES Making Revision 2009 2 1 20 34 LCD TV Symptom Analog TV No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 62: ...30 MAIN B D C229 Right Sound C230 Left Sound signal YES NO Replace MAIN B D IC 100 AV1 Video OK YES Check MAIN B D JK1100 Replace MAIN B D JK1100 NO YES Making Revision 2009 2 1 21 34 LCD TV Symptom AV1 No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 63: ...09 MAIN B D C2008 Right Sound C2009 Left Sound signal YES NO Replace MAIN B D IC 100 AV2 Video OK YES Check MAIN B D JK1101 Replace MAIN B D JK1101 NO YES Making Revision 2009 2 1 22 34 LCD TV Symptom AV2 No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 64: ...12 MAIN B D C2011 Right Sound C2012 Left Sound signal YES NO Replace MAIN B D IC 100 AV3 Video OK YES Check MAIN B D JK402 Replace MAIN B D JK402 NO YES Making Revision 2009 2 1 23 34 LCD TV Symptom AV3 No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 65: ...N B D C2013 Right Sound C2014 Left Sound signal YES NO Replace MAIN B D IC 100 Component Video OK YES Check MAIN B D JK400 Replace MAIN B D JK400 NO YES Making Revision 2009 2 1 24 34 LCD TV Symptom Component No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 66: ... MAIN B D C2015 Right Sound C2016 Left Sound signal YES NO Replace MAIN B D IC 100 RGB Video OK YES Check MAIN B D JK401 Replace MAIN B D JK401 NO YES Making Revision 2009 2 1 25 34 LCD TV Symptom RGB HDMI PC No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 67: ...ck the ADJUST MENU EDID OK YES Download EDID Refer to Adjustment Spec NO Check the HDMI Cable Replace MAIN B D IC100 YES Making Revision 2009 2 1 26 34 LCD TV Symptom HDMI DTV No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 68: ... Left Sound signal NO YES Replace MAIN B D IC 100 Analog TV Audio OK YES Check MAIN B D JK1100 Replace MAIN B D JK1100 NO YES Check the Trouble Shooting Guide Analog TV No video NO Making Revision 2009 2 1 27 34 LCD TV Symptom AV1 No Audio Out Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 69: ...eft Sound signal NO YES Replace MAIN B D IC 100 Speaker Audio OK YES Check MAIN B D JK1101 Replace MAIN B D JK1101 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009 2 1 28 34 LCD TV Symptom AV2 No Audio Out Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 70: ...d signal NO YES Replace MAIN B D IC 100 Speaker Audio OK YES Check MAIN B D JK700 or JK701 Replace MAIN B D JK700 or JK701 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009 2 1 29 34 LCD TV Symptom Headphone No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 71: ...Replace MAIN B D IC 100 Speaker Audio OK YES Check MAIN B D JK403 Replace MAIN B D JK403 NO YES NO Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009 2 1 30 34 LCD TV Symptom SPDIF No Audio Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 72: ...orted by Spec Refer to User Manual s USB cautions YES Check MAIN B D R801 5V Replace MAIN B D IC402 YES NO Replace MAIN B D IC808 YES YES Replace MAIN B D IC 100 Check MAIN B D JK405 OK YES NO Replace MAIN B D JK405 Making Revision 2009 2 1 31 34 LCD TV Symptom USB No Connect Problem 32 47LH4000 ...

Page 73: ...eck IR B D P1 Wafer Connector Check MAIN B D P1304 Wafer Connector YES NO Replace it YES Replace IR B D Making Revision 2009 2 1 32 34 LCD TV Symptom Remote Control Problem 26 42LH2000 32 47LH3000 LH4000 ...

Page 74: ...k MAIN B D P1305 Wafer Connector YES NO Replace MAIN B D IC100 IR B D IC1 Pin 3 Voltage 4V NO NO Replace it YES Replace IR B D IC1 NO Replace MAIN B D IC100 Making Revision 2009 2 1 33 34 LCD TV Symptom Remote Control Problem 19 22LH2000 ...

Page 75: ...Check IR B D P1 Wafer Connector Check MAIN B D P1304 Wafer Connector YES YES NO Replace it Replace IR B D Making Revision 2009 2 1 34 34 LCD TV Symptom Intelligent Sensor Problem 32 47LH4000 ...

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