LG 32LB5650 Service Manual Download Page 36 | Manualshive

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background image

Check various
voltages of Power
Board ( 3.5V,12V, 24V)

No Video/
No audio

Check and
replace
MAIN B/D

Replace Power
Board and repair
parts

Standard Repair Process

A. Video error

No video/ No audio

☞

A4

Established
date

Revised date

2/14

LCD TV

Error
symptom

2012 . 01 .14

End

Normal

Voltage

Y

N

«
...
34
35
36
37
38
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»

Summary of Contents for 32LB5650

Page 1: ...650 32LB5650 TO 32LF565B 32LF565B TG CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...ights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 BLOCK DIAGRAM 14 EXPLODED VIEW 15 SCHEMATIC CIRCUIT DIAGRAM APPENDIX TROUBLE SHOOTING GUIDE APPENDIX ...

Page 3: ...inals etc to be sure the set is safe to operate 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 m...

Page 4: ...ctrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing 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 e...

Page 5: ...he 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 replace...

Page 6: ...manded other specification Safety CE IEC specification EMC CE IEC 4 Model General Specification No Item Specification Remarks 1 Market Asia Oceania Africa Middle East PAL DVB Market 2 Broadcasting system 1 PAL SECAM B G D K I 2 NTSC M 3 DVB T T2 DTV LB43B LB43M support DVB T LB43T support DVB T T2 3 Channel Storage ATV 135EA DTV 1000EA 4 Receiving system Analog Upper Heterodyne Digital COFDM DVB T...

Page 7: ...0 480 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 1080I 6 1920 1080 28 125 50 00 74 25 HDTV 1080I 7 1920 1080 26 97 27 23 97 24 74 17 74 25 HDTV 1080P 8 1920 1080 33 716 33 75 29 976 30 00 74 25 HDTV 1080P 9 1920 1080 56 250 50 148...

Page 8: ... check 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 epk file download 1 Put the USB Stick to the USB socket 2 A...

Page 9: ... 1 ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 8 ADC Calibration Caution Using P ONLY key of the Adjustment remote control 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 aa 00 90 End Adjust mode Required equipment Adjustment remote control 4 2 Function Check 4 2 ...

Page 10: ...in B Gain should be kept on 0xC0 and adjust other two lower than C0 When R G B Gain are all C0 it is the FULL Dynamic Range of Module Full White Pattern CA 210 COLOR ANALYZER TYPE CA 210 RS 232C Communication Mode Color Temp Color coordinate Remark Cool C50 13 000 K X 0 271 0 002 Y 0 270 0 002 Test Signal Inner pattern for W B adjust External white pattern 80IRE 204gray Medium 0 9 300 K X 0 286 0 ...

Page 11: ... CASE Cool First adjust the coordinate far away from the target value x y 1 x y target i Decrease the R G 2 x y target i First decrease the B gain ii Decrease the one of the others 3 x target y target i First decrease B so make y a little more than the target ii Adjust x value by decreasing the R 4 x target y target i First decrease B so make x a little more than the target ii Adjust x value by de...

Page 12: ...ta and Model option download ADC Adjust A E 00 10 Automatically adjustment The use of a internal pattern No Item Condition Hex Data 1 Manufacturer ID GSM 1E6D 2 Version Digital 1 01 3 Revision Digital 3 03 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D A B 10 C 01 03 80 A0 5a 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 30 01 01 01 01 01 01 02 3A 8...

Page 13: ...training and service purposes 6 3D function test Pattern Generator MSHG 600 MSPG 6100 Support HDMI1 4 HDMI mode No 872 pattern No 83 1 Please input 3D test pattern like below 2 When 3D OSD appear automatically then select OK button 3 Don t wear a 3D Glasses check the picture like below ...

Page 14: ...ND FLASH 1Gbit IC102 PCM_A 0 7 RXA0 RXA4 RXACK RXB0 RXB4 RXBCK SPK_R SPK_L AMP_SCL SDA AUD_MASTER_CLK AUD_LRCH AUD_LRCK AUD_SCK TAS5733 IC3401 Main SOC M1A 256MB Built in IC101 Connector P4600 KEY1 2 LED_R IR REAR HDMI1 JK801 TU_SCL SDA SIF TDSN B603F NIM FE_TS_DATA 8 CVBS Comp1 AV1 JK1701 SPDIF_OUT SIDE USB JK700 HDMI2 MHL JK803 CK D0 D1 D2 _HDMI4 DDC_SCL SDA_4 HDMI_CEC SIDE_USB_DM DP USB1_OCD CT...

Page 15: ...IEW Many electrical 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 ...

Page 16: ...ATA 5 PCM_D 2 PCM_A 14 CI_TS_DATA 4 SCART1_Lout PCM_REG HP_ROUT PCM_IOWR CI_TS_DATA 1 PCM_RST PCM_A 12 CI_TS_VAL CI_TS_DATA 3 PCM_WAIT SCART1_Rout CI_TS_DATA 6 PCM_D 4 PCM_A 8 DTV MNT_VOUT PCM_D 7 PCM_OE SIDE_HP_MUTE CI_TS_DATA 7 PCM_IORD PCM_A 11 SC1_B COMP1_Pb SC1_G COMP1_Y SC1_R COMP1_Pr SC1 COMP1_L_IN SC1 COMP1_DET SC1 COMP1_R_IN FE_TS_DATA 1 FE_TS_DATA 2 FE_TS_DATA 3 FE_TS_DATA 4 FE_TS_DATA 5...

Page 17: ..._EN R463 2 7K MHL_SW_TR R464 10K MHL_SW_TR Q408 MHL_SW_TR E B C R462 10K MHL_SW_TR Q407 MHL_SW_TR E B C Q409 MHL_SW_TR E B C R465 10K MHL_SW_TR R461 10K MHL_SW_TR R439 20K 1 R440 47K 1 R433 2 7K 1 R447 22K C403 100pF 50V OPT R415 15K 5 R459 0 OPT R408 4 7K R449 1K 1 16W 1 R450 200 1 16W 1 C411 82pF 50V C404 4700pF 50V D401 30V MBR230LSFT1G L406 CB2012PK501T 3 5V_ST C436 10uF 10V OPT C437 0 1uF 16V...

Page 18: ...FIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 14 01 03 USB_S1 66 L14_M1A JK700 3AU04S 305 ZC LG 1 2 3 4 5 D700 RCLAMP0502BA OPT SIDE_USB1_DM SIDE_USB1_DP ZD700 5V OPT SD05 C701 5pF 50V OPT C702 5pF 50V OPT 5V_USB C700 22uF 16V C703 22uF 16V C704 22uF 16V USB 3216 CAP SIDE Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purpos...

Page 19: ...DMI2 JK801 EAG62611204 HDMI 2 14 NC 13 CE_REMOTE 5 D1_GND 20 GND 12 CK 11 CK_GND 2 D2_GND 19 HP_DET 18 5V 10 CK 4 D1 1 D2 17 GND 9 D0 8 D0_GND 3 D2 16 DDC_DATA 7 D0 6 D1 15 DDC_CLK D803 2 RCLAMP0524PA ESD_HDMI1_SEMTECH 1 8 2 7 3 6 4 5 9 10 D804 2 RCLAMP0524PA ESD_HDMI1_SEMTECH 1 8 2 7 3 6 4 5 9 10 D806 2 RCLAMP0524PA ESD_HDMI2_SEMTECH 1 8 2 7 3 6 4 5 9 10 D805 2 RCLAMP0524PA ESD_HDMI2_SEMTECH 1 8 ...

Page 20: ...2C 3 3V_Normal URSA VCOM_SDA URSA VCOM_SCL P1101 10031HR 30 MO_HD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 RXB1 RXB0 RXA4 RXA1 Pol change RXB4 RXACK RXBCK RXA0 RXA2 LVDS NON EU RXA2 RXBCK RXB4 RXA3 RXA1 RXB2 RXB3 RXA3 RXBCK RXACK RXA2 RXA1 RXB1 RXB3 RXA3 RXA2 RXA0 RXA4 Shift RXBCK RXB2 RXA4 51Pin LVDS Connector For FHD 60Hz RXACK RXA3 RXACK RXB3 RXA3 RXA1...

Page 21: ... S_FLASH 2013 04 29 13 NC5_S7LR M1A SPI_SCK 3 5V_ST 3 5V_ST C1300 0 1uF R1301 4 7K OPT SPI_CS SPI_SDO IC1300 MX25L8006EM2I 12G SPI_FLASH_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC R1302 33 R1300 10K OPT SPI_SDI FLASH_WP IC1300 1 W25Q80BVSSIG SPI_FLASH_WINBOND 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7 HOLD IO3 8 VCC 3 5V_ST Serial Flash for SPI boot Copyright 2014 LG Elect...

Page 22: ...609 18pF 50V IF_AGC_MAIN C1611 0 1uF 16V TUNER_RESET C1614 20pF 50V OPT TU_SCL R1608 33 RF_SWITCH_CTL FE_TS_SYNC FE_TS_CLK TDJH G101D TU1601 47 SHIELD 6 IF P 7 IF N 8 NC_2 9 NC_3 1 B1 3 3V 2 NC_1 3 IF_AGC 4 SCL 5 SDA A1 A1 B1 B1 R1605 10 R1606 10 R1610 1K R1611 1K 69 should be guarded by ground Close to the tuner FE_AGC_SPEED_CTL close to the tuner pin add 09029 1 should be guarded by ground 2 No ...

Page 23: ...M_R_1608 R1702 75 1 10W 1 AV2_Y_TERM_R_1608 1608 DTV MNT_VOUT R1723 75 CVBS_OUT_TEST R1724 0 CVBS_OUT_TEST JK1702 PPJ245N2 01 COMP_AV1_YG 5A GN YL O SPRING 6A GN YL E LUG 4A GN YL CONTACT 5B BL O SPRING 7C RD1 E LUG S 5C RD1 O SPRING 4C RD1 CONTACT 5D WH O SPRING 4E RD2 CONTACT 5E RD2 O SPRING 6E RD2 E LUG JK1702 1 PPJ245 01 COMP_AV1_G 6A GN C SPRING 7A GN E LUG 4A GN CONTACT 5B BL C SPRING 8C RD1...

Page 24: ...P_LOUT R3004 1K HEAD_PHONE HP_DET 3 5V_ST HP_ROUT SIDE_HP_MUTE R3002 1K HEAD_PHONE C3002 1000pF 50V OPT R3003 1K HEAD_PHONE Q3002 MMBT3904 NXP OPT E B C Q3003 MMBT3904 NXP OPT E B C Q3005 MMBT3904 NXP OPT E B C Q3004 MMBT3904 NXP OPT E B C Q3001 MMBT3906 NXP OPT E B C Q3000 MMBT3904 NXP OPT E B C R3000 1K OPT C3004 4 7uF 10V HEAD_PHONE L3001 HEAD_PHONE 5 6uH L3000 HEAD_PHONE 5 6uH C3005 4 7uF 10V ...

Page 25: ...01 BLM18PG121SN1D C3938 22000pF 50V R3933 5 1K R3902 10K 0 1uF C3913 16V C3901 1000pF 50V C3949 390pF 50V AUD_MASTER_CLK R3904 100 C3930 10uF 35V Tweeter_L C3920 22000pF 50V R3903 10K R3907 100 C3936 22000pF 50V AMP_MUTE C3906 0 1uF 16V OPT AUD_SCK 3 5V_ST C3939 22000pF 50V C3950 390pF 50V C3919 22000pF 50V AUD_LRCK AMP_SDA 1uF C3907 10V 0 1uF C3912 16V 3 5V_ST POWER_DET L3902 CIS21J121 0 1uF C394...

Page 26: ...YMBOL MARK OF THE SCHEMETIC RS232C_MSTAR_DEBUG_4P 2013 04 30 40 L14_S7LR M1A PM_RXD 3 5V_ST R4001 100 R4000 100 P4000 12507WS 04L RS232C_DEBUG_4P 1 VCC 2 PM_RXD 3 GND 4 RM_TXD 5 GND PM_TXD JP_GND3 RGB_DDC_SCL JP_GND4 RGB_DDC_SDA JP_GND1 JP_GND2 P4001 12505WS 04A00 MSTAR_DEBUG_4P 1 2 3 4 5 RS 232C 4PIN MSTAR DEBUG 4PIN RS 232C 4PIN MSTAR DEBUG 4PIN Copyright 2014 LG Electronics Inc All rights reser...

Page 27: ...00 Digital Eye R4600 3 3K R4607 1K Digital Eye C4603 0 1uF 16V KEY_CAP KEY1 3 5V_ST R4601 100 C4601 1000pF 50V KEY2 VA4600 LED_R_Zener R4604 10K 1 C4604 100pF 50V R4605 1K Digital Eye SENSOR_SDA 3 3V_Normal P4601 12507WR 08L OPT 1 2 3 4 5 6 7 8 9 C4602 0 1uF 16V KEY_CAP L4600 BLM18PG121SN1D C4605 18pF 50V Digital Eye 3 5V_ST IR R4609 100 Digital Eye 3 5V_ST R4606 1 8K SENSOR_SCL P4600 12507WR 10L ...

Page 28: ...0 N21 LVA0M TTL_G 3 EPI1 GPIO181 N19 LVB4P TTL_G 4 EPI2 GPIO182 M21 LVB4M TTL_G 5 EPI2 GPIO183 M20 LVB3P TTL_G 6 EPI3 GPIO184 M19 LVB3M TTL_G 7 EPI3 GPIO185 L20 LVBCKP TTL_R 0 EPI4 GPIO186 L19 LVBCKM TTL_R 1 EPI4 GPIO187 K20 LVB2P TTL_R 2 EPI5 GPIO188 K21 LVB2M TTL_R 3 EPI5 GPIO189 K19 LVB1P TTL_R 4 EPI6 GPIO190 J21 LVB1M TTL_R 5 EPI6 GPIO191 J20 LVB0P TTL_R 6 EPI7 GPIO192 J19 LVB0M TTL_R 7 EPI7 G...

Page 29: ... V3 AUVAG T2 CVBSOUT1 T6 CVBS0 V5 CVBS1 U5 CVBS2 T5 VCOM V4 I2S_OUT_BCK GPIO165 E4 I2S_OUT_MCK GPIO163 F4 I2S_OUT_SD GPIO166 F7 I2S_OUT_WS GPIO164 F5 USB0_DM C4 USB1_DM Y12 USB0_DP B4 USB1_DP AA12 BIN0M J2 BIN0P J3 GIN0M K3 GIN0P J1 RIN0M K2 RIN0P K1 HSYNC0 M6 VSYNC0 L6 BIN1M L2 BIN1P L3 GIN1M M1 GIN1P M2 RIN1M N1 RIN1P N3 SOGIN1 M3 IC101 1 LGE2131 M1A_128M M1A_128M_UO3 ARC0 M4 RXC0N W7 RXC0P Y8 R...

Page 30: ...HAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC MHL_SW_AND 2013 09 01 L14_M1A 58 MHL_5V_EN MHL_OCP_EN MHL_CD_SENSE 3 3V_Normal IC5801 74LVC1G08GW MHL_SW_AND_GATE 3 GND 2 A 4 Y 1 B 5 VCC L14 MHL SW AND GATE Copyright 2014 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ......

Page 32: ...L14 Repair Process ...

Page 33: ...r 6 6 B Power error No power 7 7 Off when on off while viewing power auto on off 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error Remote control Local switch checking 11 11 External device recognition error 12 12 E Noise Circuit noise mechanical noise 13 13 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulletin in ...

Page 34: ... 9 A Video error_Color error LCD TV connection diagram A7 10 11 Check Link Cable LVDS reconnection condition A8 A9 12 Adjustment Test pattern ADJ Key A10 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A8 A9 15 Adjustment Test pattern ADJ Key A10 16 Appendix Defected Type caused by T Con Inverter Module...

Page 35: ...heck 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 1 14 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A6 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR ...

Page 36: ...5V 12V 24V No Video No audio Check and replace MAIN B D Replace Power Board and repair parts Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 14 LCD TV Error symptom 2012 01 14 End Normal Voltage Y N ...

Page 37: ... maker TV etc Replace Main B D Check Tuner soldering Y N Y Y By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Y Contact with signal distributor or broadcaster Cable or Air N N Y N A6 Standard Repair Process Established date Revised date 3 14 LCD TV Error symptom 2012 01 14 End Normal Si...

Page 38: ...Box Different maker TV etc Y Change satellite setting match with installed ANT N Y N A6 Standard Repair Process Established date Revised date 4 14 LCD TV Error symptom 2012 01 14 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Contact with signal distributor or broadcaster Cable or Air N Check Tuner soldering Replace Main B D Normal Picture E...

Page 39: ...ble Y Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A7 N Y Replace module Request repair for external device cable Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LCD TV Error symptom 2012 01 14 End Color error Color error External device Cable Normal External device Cable Normal External Input Co mponent err...

Page 40: ...ig pattern Generator Set top Box etc N Y Replace Main B D Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Connect other external device and cable Check normal operation of External Input Component HDMI by connecting Jig pattern Generator Set top Box etc Replace Main B D N Y Check S W Version Y N S W Upgrade Y N Y N Replace Main B D Replace M...

Page 41: ...k Power LED Replace Power B D Measure voltage of each output of Power B D N Y Replace Main B D Y Replace Main B D N Y Check ST BY 3 5V Replace Power B D N Replace Power B D Y A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LCD TV Error symptom Stand By Red 2012 01 14 End Power LED On Normal Voltage Normal Voltage Normal Operati on ...

Page 42: ...EROFF_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 Recording POWEROFF_SWDOWN Power o...

Page 43: ...wer Board Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board C Audio error No audio Normal video A15 A16 Established date Revised date 9 14 LCD TV Error symptom Standard Repair Process 2012 01 14 End Normal Voltage Off Disconn ection ...

Page 44: ...received Request repair to external cable ANT provider Y Check audio B Voltage 24V In case of External Input signal error Check and fix external device Replace Main B D N Established date Revised date 10 14 LCD TV Error symptom Standard Repair Process A16 2012 01 14 End Signal Normal Normal Voltage Normal Audio Wrecked Audio Discontinuation Noise for all audio Wrecked Audio Discontinuation Noise o...

Page 45: ...Check Replace Baterry of R C Check Repair Cable connection Connector solder Check B 3 5V On Main B D A17 N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal N Y Repair Replace IR B D N A17 Replace Main B D Y A17 Standard Repair Process Established date Revised date 11 14 LCD TV Error symptom 2012 01 14 End Normal Operating Normal...

Page 46: ... Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 12 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Signal Input Technical information External Input and Component Recognition error HDMI Optical Recognition error ...

Page 47: ...ormation 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 Established date...

Page 48: ...Replace cabinet Replace remote controller Replace stand F Exterior defect Exterior defect Established date Revised date 14 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Module damage Cabinet damage Remote Controller damage Stand damage ...

Page 49: ... 26 B Power error_Off when on off while viewing POWER OFF MODE checking method A14 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A15 29 Voltage and speaker checking method when there is no audio A16 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A16 31 D Function error_ No response in remote controll...

Page 50: ...il Technical Manual Check Back Light On with naked eye A Video error_No video Normal audio ALL MODELS A1 Established date Revised date Error symptom Content LCD TV 2012 01 14 Power On disjoint back case check lighting at 2 points ...

Page 51: ...od A Video error_No video Normal audio A2 Established date Revised date Error symptom Content LCD TV 2012 01 14 1 Measure DC 24V applying to inverter PCB from Power Board 2 Output 24V from Power Board supply to inverter PCB Check Pin contacting statement and connection statement ...

Page 52: ...ARD Standard Repair Process Detail Technical Manual Check White Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date Error symptom Content LCD TV Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after r...

Page 53: ... error_No video Audio A4 Established date Revised date Error symptom Content LCD TV 2012 01 14 18 Pin Power Board Main Board SMAW200 H18S5 1 Power on 2 DRV ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 NC 17 GND 18 GND Check DC 3 5V 12V 24V ...

Page 54: ...en the signal is strong use the attenuator 10dB 15dB 20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop A5 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 55: ...rsion checking method A Video error_Video error video lag stop 1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version A6 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 56: ...iagram 1 A Video error _Vertical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A7 Established date Revised date Error symptom Content LCD TV ALL MODELS The picture depends on model 2012 01 14 ...

Page 57: ...VDS connection condition Standard Repair Process Detail Technical Manual Check and replace Link Cable LVDS and contact condition A Video error_Color error ALL MODELS A8 A9 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 58: ...A Video error_Color error You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A10 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 59: ...CNT Broken T Con Defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange T Con Board 1 ...

Page 60: ...normal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 ...

Page 61: ...Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok ...

Page 62: ...Appendix Exchange the Module 1 Panel Mura Light leakage Press damage Crosstalk Crosstalk Press damage Press damage Un repairable Cases In this case please exchange the module ...

Page 63: ...B IC Defect Vertical Line Source TAB IC Defect Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 Un repairable Cases In this case please exchange the module ...

Page 64: ...cess Detail Technical Manual Check front display LED B Power error _No power A11 Established date Revised date Error symptom Content LCD TV ST BY condition Red Front LED control Menu Option Standby Light On Off 2012 01 14 ...

Page 65: ...wer error _No power A12 Established date Revised date Error symptom Content LCD TV 2012 01 14 18 Pin Power Board Main Board SMAW200 H18S5 1 Power on 2 DRV ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 NC 17 GND 18 GND Check DC 3 5V 12V 24V ...

Page 66: ...power A13 Established date Revised date Error symptom Content LCD TV 2012 01 14 18 Pin Power Board Main Board SMAW200 H18S5 1 Power on 2 DRV ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 NC 17 GND 18 GND Check power on Pin 1 pin is high about 3 3V ...

Page 67: ...r for adjustment 2 Check the entry into adjustment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A14 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 68: ... the AUDIO function of the Menu 3 Select TV Speaker Check Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A15 Established date Revised date Error symptom Content LCD TV 2012 01 14 ...

Page 69: ...k Chik sound when you touch the GND and output terminal the speaker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A16 Established date Revised date Error symptom Content LCD TV 18 Pin Power Board Main Board SMAW200 H18S5 1 Power on 2 DRV ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDI...

Page 70: ...Amp when the power is in ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not move at all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A17 Established date Revised date Error symptom Content LCD TV 2012 01 14 P4600 Sub Ass y Main Ass ...

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