LG Electronics 55LA71**-ZA manual

Printed in Korea P/NO : MFL67727107 (131 1-REV01) CHASSIS : LD33B MODEL : 55LA66** 55LA66**-Z* 55LA71** 55LA71**-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LED TV SER VICE MANUAL North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com Interna[...]

- 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ........................................................................ 3 SERVICING PRECAUTIO[...]

- 3 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 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 [...]

- 4 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SER VICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE : If unforeseen circumstances [...]

- 5 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the cir- cuit foil. When holes are the slotted type, the following technique shoul[...]

- 6 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 1. Application range This specification is applied to the LED TV used LD33B chassis. 2. Requirement for T est Each part is te[...]

- 7 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) P AL-BG 2) P AL-DK 3) P AL-I/I’ 4) SECAM-L/L', DK , BG, I 5) DVB-T 6) DVB-C 7) DVB-T2 8) DVB-S/S2 Model : *L*V*-Z* (T2 only Model) DVB-S: Satellite 3 Program covera[...]

- 8 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. Component V ideo Input (Y , P b , P r ) No. Resolution H-freq(kHz) V -freq(Hz) Pixel clock 1. 720×480 15.73 60.00 SDTV , DVD 480i 2. 720×480 15.63 59.94 SDTV , DVD 480i 3. 720×480 31.47 59.94 480p 4. 720×480 31.50 60.00 4[...]

- 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 6.2. PC mode No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) 1 640 x 350 @70Hz 31.468 70.09 EGA 2 720 x 400 @70Hz 31.469 70.08 DOS 3 640 x 480 @60Hz 31.469 59.94 VESA(VGA) 4 800 x 600 @60Hz 37.879 60.31 VESA(SVGA) 5 102[...]

- 10 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed 1 640*480 31.469 / 31.5 59.94/ 60 25.125 1 T op-and-Bottom Side-by-side(half) Secondary(SDTV 480P) Secondary(SDTV 480P) 2 62.938/63 59[...]

- 1 1 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 7.3. RF Input(3D supported mode manually) No. Resolution Proposed 3D input proposed mode 1 HD 1080I 720P 2D to 3D Side by Side(Half) T op & Bottom 2 SD 576P 576I 2D to 3D 7.4. RF Input (3D supported mode automatically) No.[...]

- 12 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock Proposed 3D input proposed mode 1 1280*720 45.00 60.00 74.25 HDTV 720P 2D to 3D, Side by Side(Half), T op & Bottom 2 1280*720 37.500 50 74.25 HDTV 720P 3 1920*1080 33.75 6[...]

- 13 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LED TV with LD33B chassis. 2. Designation (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer [...]

- 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.2.3. WIDEVINE key Inspection - Confirm key input data at the "IN ST ART" MENU Mode. 3.3. LAN PORT INSPECTION(PING TEST) Connect SET → LAN port == PC → LAN Port 3.3.1. Equipment setting (1) Play the LAN Port T es[...]

- 15 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.5.1. Check the method of CI+ Key value (1) Check the method on Instart menu (2) Check the method of RS232C Command 1) Into the main ass’y mode(RS232: aa 00 00) 2) Check the key download for transmitted command (RS232: ci 00[...]

- 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.1.2. 2D EDID ▪ Reference - HDMI1 ~ HDMI4 / RGB - In the data of EDID, bellows may be different by S/W or Input mode. ⓐ Product ID ⓑ Serial No: Controlled on production line. ⓒ Month, Y ear: Controlled on production li[...]

- 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.2.5. Adj. method (1) Auto adj. method 1) Set TV in adj. mode using POWER ON key . 2) Zero calibrate probe then place it on the center of the Display . 3) Connect Cable.(RS-232C to USB) 4) Select mode in adj. Program and begin[...]

- 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.3. Local Dimming Function Check Step 1) T urn on TV . Step 2) At the Local Dimming mode, module Edge Backlight moving right to left Back light of IOP module moving. Step 3) Confirm the Local Dimming mode. Step 4) Press "[...]

- 19 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.7. LNB voltage and 22KHz tone check (only for DVB-S/S2 model) ▪ T est method (1) Set TV in Adj. mode using POWER ON. (2) Connect cable between satellite ANT and test JIG. (3) Press Y ellow key(ETC+SWAP) in Adj Remote contro[...]

- 20 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 9. USB S/W Download(Service only) (1) Put the USB Stick to the USB socket (2) Automatically detecting update file in USB Stick - I f y o u r d o w n l o a d e d p r o g r a m v e r s i o n i n U S B S t i c k i s Lower , it did[...]

- 21 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Au d i o AMP LGE21 22 CI S l o t P_ T S P_ T S T/C Demo d IF ( +/-) USB 1 O PTIC LA N DDR3 HDMI1 HDMI2 HDMI3 (MHL) An al o g Demo d SY S T EM EE PROM HDMI MUX Air / Cabl e DVB -S LNB USB 2 USB 3 eMM C Su b Mi c o m DDR3 P_ T S [...]

- 22 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 900 200 400 410 540 L V1 L V2 820 521 530 910 120 560 300 570 590 500 301 510 121 A22 A2 A10 A T1 AG1 * Set + Stand * Stand Base + Body Option EXPLODED VIEW Many electrical and mechanical parts in this chassis have special safe[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MT5398_TS_OUT[1] CI_ADDR[5] EMMC_DATA[6] MT5398_TS_OUT[6] [...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MT5398_TS_OUT[5] CI_DATA[7] CI_ADDR[13] CI_ADDR[14] MT5398[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. L505 BLM18PG121SN1D AVDD_33SB LAN_JACK_POWER Q500 MMBT3904[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. C611 100pF 50V EU R605 75 1% EU C614 0.01uF EU SC_ID_SOC C[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BRA[2] BRDQ[2] ARDQ[14] ARDQ[22] BRDQ[0] ARDQ[24] ARDQ[11][...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. CI_MDI[3] CI_A_DATA[1] CI_A_DATA[6] CI_MDI[0] CI_MDI[0] MT[...]

THERMAL THERMAL THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. +5V_NORMAL L2409 BLM18PG12[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. WOL/WIFI_POWER_ON POWER_ON/OFF1 R3005 10K MICOM_LCD/OLED R[...]

THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. L3303 BLM18PG121SN1D +5V_NORMAL D0-_HDMI4_JACK DDC[...]

Fiber Optic THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SPDIF_OUT C3602 0.1uF 16V R3611 2.7K OPT JK360[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. R3700 10K HP_LOUT HP_ROUT +3.3V_NORMAL HP_DET JK3700 PEJ03[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SOC_RX COMP1_Y/AV1_CVBS AV1_CVBS_DET R3822 0 SOC_TX COMP1_[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LED_R R4107 10K C4121 0.1uF M_REMOTE L4111 BLM18PG121SN1D [...]

USB DOWN STREAM USB DOWN STREAM THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. USB_CTL2 /USB_OCD2[...]

USB DOWN STREAM THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. +5V_USB_1 USB_DP1 D4500 RCLAMP0502BA OPT R[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. C4600 1000pF 50V EU SC_DET VA4600 20V EU VA4607 5.6V OPT L[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. D5001 5.5V LAN_ESD EPHY_TDN D5003 5.5V LAN_ESD D5000 5.5V [...]

THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. R5411 12 0.1uF C5413 16V AMP_MUTE 0.1uF C5420 50V [...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SIGN600002 C6004 0.1uF 50V EU DTV/MNT_R_OUT C6008 1uF 25V [...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. R6100 10K HP_OUT C6101 1uF 10V HP_OUT C6100 1uF 10V HP_OUT[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. +5V_CI_ON +5V_NORMAL R6217 100 CI C6210 1uF 25V CI R6218 1[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SIGN630028 P6300 10057542-1311FLF(B CAS Slot) JAPAN C1 VCC[...]

THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FE_DEMOD1_TS_DATA[1] FE_DEMOD1_TS_DATA[0] FE_DEMOD[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER_SIF_TU C6601 0.1uF 16V TU_W FE_DEMOD1_TS_DATA[1] FE_[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IC6801 MAX3232CDR EAN41348201 JAPAN_HOTEL 3 C1- 2 V+ 4 C2+[...]

THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. A_GND C6905 10uF 25V LNB R6900 2.2K 1W LNB A_GND L[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. R7107 33 LGD_T-Con_Scanning R7106 33 CP_BOX TXB4N TXA1P TX[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. L/DIM0_VS_PWR L/DIM0_SCLK_PWR R7601 10K L/DIM_OUT_8P P7600[...]

THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. H_VDD VGL R7705 47 1/16W GMA18 CLK5 TXA4P [...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. VDD VDD_EPI C7801 68uF EPI C7800 68uF EPI T-Con 77 2011.12[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. EMMC_DATA[4] EMMC_DATA[1] EMMC_DATA[6] EMMC_DATA[5] EMMC_D[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. +24V_AMP C5450 10uF 35V OPT Copyright © 2013 LG Electroni[...]

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FE_DEMOD3_TS_VAL R8505 0 TU_J_JP FE_DEMOD1_TS_VAL FE_DEMOD[...]

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1/ 8 8 2013 LED/LCD TV Engineering guide < Applicable Model : Mid-end Platform > XXLA74*-Z* XXLA71*-Z* XXLA69/66*-Z* XXLA64/62/61*-Z* XXLN57*-Z* Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

2/ 8 8 ◈ CONTENT ◈ 1. New features 2. Main PCBs 3. Block Diagrams, IIC Map 4. Structure of TV set and connection of sub ass’ys 5. New sub ass’ys - Instruction of new sub ass’ys 6. Adjust way of new features 7. Repair guide Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use O[...]

3/ 8 8 EPI Interface EPI(Embedded Point-Point Interface) Features • Point-Point topology (support 2 Pair option) • CDR (Clock Data Recovery) • Bandwidth up to 1.85Gbps/pair at FHD 120Hz 10 bit application • Lock signal cascading and feedback to T -Con • Embedded Control Data Merits • Better reliability on common noise • No data skew a[...]

4/ 8 8 EPI Interface (mini-L VDS vs. EPI) Comparison HF mini-L VDS What to change EPI (Embedded clock P-to-P Interface) - Difficult to upgrade bandwidth limit - Multiple number of wires needed for higher bandwidth HF mini- LVDS FHD (10bit) 60Hz 120Hz 240Hz No. of Signal 36 36 72 Connector 60pin (2ea) 60pin (2ea) 80pin (2ea) - Better reliability on [...]

5/ 8 8 HF mini-L VDS EPI T opology Protocol Features @10bit, FHD120 • Multi Drop • Data rate: 660Mbps • External clock • Point to Point • Data rate : 1.8Gbps • Embedded clock, Control Merit • Simple structure • Standardization • Fewer Lines : 12 • Embedded clock : low EMI, Clock skew free • Easy to PCB design Demerit • T oo [...]

6/ 8 8 NFC (Near field communication) Near field communication (NFC) is a set of standards for smartphones and si milar devices to establish radio communication with each other by touching them together or bringing them into close proximity , usually no more than a few centimetres. Present and anticipated applications incl ude contactless transacti[...]

7/ 8 8 Main PCB for Broadband Main + TCON all in one T o PSU 1 2 6 4 1 Main processor, DDR Memory eMMC Memory 2 3 4 Micom for Key/IR sensing PMIC Audio AMP xxLA660S-Zx Key+IR Front Spk T o module 5 5 EPI Wafer S model 2 1 LNB IC Block Only S model 1 2 Chassis : LD33B PCB P/No : EAX64797003 3 6 Level shifter WIFI/BT Copyright © 2013 LG Electronics.[...]

1. LGE2122 Block Diagram Audio A MP (NTP7513) LGE 2122 CI Slot P_TS P_TS T/C Demod IF (+/-) USB1 OPTIC LAN DDR3 1600 X 16 (512MB X 2EA) HDMI1 HDMI2 HDMI3 Analog Demod SYSTEM EEPROM (256Kb) HDMI MUX Air / Cable TUNER (T/C/A) TUNER (S2) DVB-S DEMOD (S2) LNB USB2 USB3 41P 51P eMMC (4GB) Sub Micom (RENE SAS R5F1000G) DDR3 1600 X 16 (256MB X 1EA) P_TS 5[...]

33 Ω +3.3V_Normal 2.7K Ω +3.5V_ST 3.3K Ω IC3000 Renesas MICOM TUNER(S) 2.7K Ω +3.3V_Normal I2C_SDA4 I2C_SCL4 I2C_SDA3 I2C_SCL3 LNB 33 Ω 22 Ω 33 Ω +3.3V_Normal 2.7K Ω IC7700 PMIC I2C_SDA2 I2C_SCL2 33 Ω +3.3V_Normal 1.2K Ω IC8101 NTP7513(AMP) I2C_SDA1 I2C_SCL1 100 Ω P7600 Local dimming 33 Ω IC101 HDCP EEPROM 22 Ω 33 Ω IC10[...]

3. Power Block Diagram 3.5V 24V +12V_LNB LNB option PANEL_VCC PANEL_POWER NTP_7400(PVDD1) NTP_7400(PVDD2) AMP 5V Normal 3A 3.3V DAC MTK(AVDD33_DAC) HDMI_EEPROM RGB_EEPROM CI (+5V_CI_ON) TUNER(+5V_TU) 1.2V Core 6A MTK(AVDD12_LVDS ) MTK ( AVDD_ ) MTK(VCCK) MICOM(VDD) IR A'ssy 1.5V DDR 3A MTK (DDRV) DDR(VDD) DDR(VDDQ ) TUNER(+1.23V) 12V 5V USB 1C[...]

4. T uner/CI Block Diagram LGE 2122 TDSQ- G501D [RESET] 2 AG24 [ADIN6_SRV] AF19[OPCTRL1] AJ19 [OPC TRL0] [SLC] 3 [SDA] 4 [+3.3V_TUNER] 5 [+.1.8V_TUNER] 7 [T/C_DIF[P]] 10 [T/C_DIF[N]] 11 [ERROR] 16 [SYNC] 17 [VALID] 18 [MCLK] 19 R29 [DEMOD_TSSYN C] P27 [DEMOD_TSVA L] P30 [DEMOD_TSCLK] [D0-7] 20-27 [+1.23V_S2_DEMOD] 30 [S2_RESET] 31 AM18 [ADIN7_SRV] [...]

5. V ideo/Audio In Block Diagram LGE 2122 [CVBS2P] Tuner Jack Side SoC Side JK501 SCAR T JK4600 COMP 1_Y/AV1_C VBS COMP1_Pb COMP1_Pr COMP1/AV1/DVI_L_IN COMP1/AV1/DVI_R_IN COMP 1_Y/AV1_C VBS_SOC COMP1_Pb_SOC [PB0P] [PR0P] [A IN4_L_AADC] COMP1_Pb_SOC COMP1/AV1/DVI_L_IN_SOC [A IN4_R_AADC] COMP1/AV1/DVI_R_IN_SOC SC_CVB S_IN SC_ID/FB SC_R/ G/B SC_L/R _I[...]

6. Au dio Out Block Diagram SPDIF_OUT IC8101 Audio A MP NTP7513 LPF COMP1/AV1/DVI_L_IN_SOC COMP1/AV1/DVI_R_IN_SOC [ASPDI F0] Tuner TR BUF [MPXP] SCART DTV/MNT_L/R_ OUT [AL1_ADA C] [AR1_ADAC] SC_L_IN / SC_R_IN SCART_L /Rout AUD_LRCH HP_L/ROUT_MAIN HEAD PHONE LPF 4P WA FER [AL0_ADA C] [AR0_ADAC] LGE 2122 TUNER_SIF [AOLRCK] [AOSDA T A0] AUD_LRCK AUD_S[...]

7. HDMI HDMI1 HDMI2 HDMI3 CEC_REMOTE RENESA S MICOM HDMI_CEC LGE 2122 Q3001 DDC_SCL_1_SO C DDC_SCL_2_JACK DDC_SDA_2_JA CK DDC_SCL_3_JACK DDC_SDA_3_JA CK TMDS Link 8bits HDMI_ARC DDC_SDA_1_SOC X-tal 32.768kHz TMDS Link 8bits TMDS Link 8bits WOL_CTL SIL1292 I2C_SCL4 I2C_SDA4 5V_BUS OCP 5V_MHL MHL_DET TMDS Link or M HL Link Copyright © 2013 LG Electr[...]

EPI Tx Block LGE 2122 8. Panel Interface Block Diagram Z_Out 50Pin X 2 PANEL_VCC (+12V) PMIC TPS65178 Lev el Shift TPS65198 EPI CH4 +/- EPI CH5 +/- EPI CH6 +/- VCOM_P VCOM_N VCOM_LOOP VCOM EPI CH1 +/- EPI CH2 +/- EPI CH3 +/- VCOM_DYN VCOMLFB VCOMRFB GMA 1/GM A 3/GAM9/GMA 10/GM A 16/GM A18 VDD VCC VCC1.8 CLK1_I~CLK6_ I GMA 4/GM A 5/GAM7/GMA 12/GM A [...]

9. PM IC & Lev el Shift Bloc Diagram PMIC TPS65178 Boost Converter Buck 1 converter(VCC) Buck 2 converter(Vcore) Buck 3 converter(HVdd) Buck 4 converter(VCC18) Positive Charge P ump Co ntroller Negative Charge Pump Controller 6-Ch Gamma Buffer(DAC output) Vcom reference & gain Reset PA NEL_VCC VCC18 VCC HVdd Vdd VCOM_P VCOM_N GA M 4/5/7/12/[...]

10. USB / WIFI / M -REM OTE / UA RT LGE 2122 USB1 USB_DP1 USB_DM1 [USB_DP_P2] [USB_DM_P2] USB2 USB_DP2 USB_DM2 [GPIO43] [GPIO46] O CP O CP +5V_USB_1 +5V_USB_2 /USB_OCD1 USB_CTL1 USB_CTL2 /USB_OCD2 USB_WIFI WIFI_DM WIFI_DP Motion Remote Receiver M_REMOTE_RX M_REMOTE_TX M_RFModule_RESET [U1RX] [U1TX] [OPCTRL49] [OPCTRL50] [USB_DM_P3] [USB_DP_P3] RENE[...]

1 / 88 Interconnection - 1 1 Main PCB 2 Pow er Board 3 Local key A ssy 1 2 3 4 5 Main / LPB 24Pin + Local Dimming Cable Main / Module EPI Cable 50& 50Pin LED driv er / PS U IR 8Pin Cable WiFi 6Pin + RF 8Pin Cable SPK Cable [PCBs] [Cables] 6 1 2 3 1 2 3 4 5 6 47LA 660S - ZA 4 5 4 RF A ssy 5 WIFI A ssy Copyright © 2013 LG Electronics. Inc. All r[...]

2 / 88 8 7 Interconnection - 2 IR to Local Key 3Pin Cable IR to Logo Assy 4P in Cable [Cables] 7 8 [PCBs] 6 IR A ssy 6 47LA 660S - ZA Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

3 / 88 Introductions of 13Y RF ass’y + Magic Remote control 1. Syste m 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5. Pairing/Un-pairing Method Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

4 / 88 1. System Remote RF Receiver TV UA RT or U SB RF  Pairing Information T ransmission (Send to TV after Paired) • Static Calibration Data (Bypass only) • Remote FW v er . (Save also in Receiver) • BD_ADDR (Save also in Receiver) • Pairing Information Transmission Sequence • When it is paired, the remote sends packets (pairing succ[...]

5 / 88 2. Remote Button s (M4 vs. MR13) BUTT ON RF Unpaired IR_CODE RF Paired RF_CODE IR continuous repeat ETC. Phsical Buttons POW ER 0x08 NO NE Y IR only BACK 0x28 0x8028 Y SMART 0x7C 0x807C Y ← 0x07 0x8007 Y → 0x06 0x8006 Y ↑ 0x40 0x8040 Y ↓ 0x41 0x8041 Y OK 0x75 0x8044 Y VOICE 0xDE 0x808B Y = VOICE_START 3D 0xDC 0x80DC Y Screen RMT / Q.[...]

6 / 88 3. MR13 Block Diagram MPU-6150 (Gyr o+ACC) (Invensense) BCM20733M A2 (BROADCOM ) Bluetooth 3.0 Key Button ( 4 x 4 ) AA x 2 Batte ry DC -DC Boost TI TPS61097 SOT23-5 Power Management Antenna Partr on X-tal 24 MHz 2.8V LDO uP0108NEC5- 28 SC70 512Kb (Serial F/M) I2C ch1 I2C ch2 WM8950 (Wolfson) V oic e MIC. (Knowles) I2S 4-mode Only 2.8V LDO uP[...]

7 / 88 주요 Item IC Manuf acturer Function Remocon V oic e V oice Codec WM8950 Wolfson 16KHz Sampling of A udio data MEMS Mic. SPU0414HR5H Know les Sensing V oice Motion Sensor Gy ro Sensor + A ccelerome ter MPU- 6150 Invensense Se nsing angular v elocity of X, Y , Z-axis Sensing device tilt (Pitch & Roll angle) RF + Micom RF Antenna SDBTPTR3[...]

8 / 88 5. RF Pairi ng / Un-pairing Method Method Description RF Pairing  Method1 – If unpaired, just press "OK" button. – If paired, press "OK" button after unpairing.  Method 2 (Repairing) – Press “BACK" button for 5 sec. • When do pairing, the remote should make pairing request IR signal(0x75) to TV . • [...]

9 / 88 1. Wi - Fi built in A ss’ y feature 2. Wi - Fi built in A ss’ y specification Introductions of 13Y WIFI buil t in ass’y Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

10 / 88 WIFI Built in ass’y feat ure PIN USB int erfac e 1 Vcc 2 DM 3 DP 4 GND 5 WOW 6 NC - Pin map BCM43236B Wafer 6pin 1.25mm 3.3V USB DP, DN GND USB DP, DN DCDC EUP3010 Cry stal 20MHz 3.3V 1.2V 3.3V 1.2V Sw itch DM3030 A nt enna 2.4G/5G A ntenna 2.4G/5G RX/TX RX/TX WOL Sw itch DM3030 Block diagram 48 30 Copyright © 2013 LG Electronics. Inc. A[...]

11 / 88 WIFI Built in ass’y Specification Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

12 / 88 표지 W idevine & HDCP 2.0 & NETFLX 2012. 12. 08 Contents 1. Widev ine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM LCD TV LCD TV R&D Lab / HW1 team Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

13 / 88 1. Widevine? [Widev ine] Widev ine is the Solution(Library) offering A dapti ve Streaming and DRM. In BBTV , w hen special CP do service, this module is required key . Currently CP which is requested to w idevine, is typically A ustra lian Bigpond Live and North A mer ican CinemaNow. Furthermore, because the future w ill be the spread of CP[...]

14 / 88  HDCP  High-bandwidth Digital Content Protection  Protect high- v alue digital motion pictures, television programs and audio against unauthorized intercepti on and copying between a digital set top box or digital video recorder and a digital TV or PC.  Specific ation developed by Intel Corporation to protect digital entertainme[...]

15 / 88 3. DTCP? [DTCP] The Digital T ransmission Content Protection Specification defines a cryptogrphic protocol for protecting audio/ v ideo entertainment content from unauthorized copy ing, intercepting, and tampering as it trav erses digital transmission mechanisms such as a high-performance serial bus that conforms to the IEEE 1394 -1995 stan[...]

16 / 88 4. Changed BOM  Changed Item : Separate HD CP check box. - HDCP 2.0 Tx - HDCP 2.0 Rx - HDCP 1.4 Rx As -W as Current Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

17 / 88 Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page R emarks 1 A. Video err or No video/Normal audio 1 2 No video/No audio 2 3 Video error, video lag/stop , fail tunning 3, 4 4 Color err or 5 5 Vertical/Horizontal bar, residual image, light spot, externa l device color error 6 6 B. [...]

18 / 88 Contents of LCD TV Standard Repair Process Detail T echnical Manual No. Erro r s ymp tom Conten t Page Remar ks 1 A. Vi deo error_ No video/Normal audio Check LCD back light with naked eye A1 2 LED driver B+ 24V measurin g method A2 3 Check White Balance value A3 4 Power Board voltage measuring method A4 6 A. Video error_ No video/Video lag[...]

19 / 88 Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On w ith naked eye On Y N Check Power Board 12v,3.5v etc. Normal voltage Y N Replace T-con Board or module And Adjust VCO M Repair Power Board or parts Check Pow er Board 24v output Normal voltage Y Replace Inverter or module N Repair Power Board or parts End [...]

20 / 88 Normal voltage? Check v ario us voltages of Pow er Board ( 3.5V,12V,20V or 24V…) No Video/ No audio Check and replace MAIN B/D Y Replace Pow er Board and repair parts N End Standard Repair Process A . Video err or No video/ No audio ☞ A4 Established date Revised date LCD TV Error symptom 2012. 12 .06 Copyright © 2013 LG Electronics. In[...]

21 / 88 A . Pi cture Problem Picture broken/ Freezing Y N ☞ A6 N Check RF Signal level Normal Signal? Check RF Cable Connection 1. Reconnection 2. Install Booster Check S/W Version Use Signal Test Check Signal status S/W Upgrade Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set -To[...]

22 / 88 A . Pi cture Problem (DVB-S/S2) Tuning fail, Picture broken/ Freezing Y N ☞ A6 Check RF Signal level Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check RF signal cable (DVB satellite si g nal or not) C heck whe ther other equipments have problem or not. (By connecting RF Cabl e at other equipment)[...]

23 / 88 Color error? Y N ※ Check and replace Link Cable (LVDS) and contact condition Y N Replace M ain B/D Color error? Check error color input mode Check color by input -External Input -COMPO NENT -RGB -HDMI/DVI Y External device /Cable normal External Input/ Component error Check external device and cable Y External device /Cable normal RGB/ HD[...]

24 / 88 Screen normal? N Y Check ex ternal device connecti on conditio n Y N Check and replace Link Cable Normal? Y N Screen normal? Rep lace M ain B/D (adjust VCOM ) Replace module Check color condition by input -External Input -Component -RGB -HDMI/DVI End V ertical /Horizontal bar , residual image, light spot Request repair for ex ternal device [...]

25 / 88 B. Po w er er ror No power Power LED On? Y N DC Power on by pressing Pow er Key On Remote control Y N Normal operation? Check Power On ‘”High” Check Pow er cord was inserted properly Check Power LED Replace Power B/D Measure v oltage of each output of Power B/D N Y Normal voltage? Replace M ain B/ D Y OK? Replace M ain B/D N Y Normal?[...]

26 / 88 B. Power error Off when on, off while viewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C cord & Outlet and check each 3 phase out Check A/C cord Check for all 3 - phase power out Check outlet Replace M ain B/D CPU Abnormal (If Power O ff mode is not display ed) Check Power B/D voltage Y N Replace M ain B/D Normal voltage[...]

27 / 88 No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF Check audio B+ 24V of Power Board Normal voltage Y N Replace Pow er Boa rd and repair parts Check Speaker disconn ection N Y Replace Speaker Replace M AIN Bo ard End C. A udio error No audio/ Normal video ☞ A 24 ☞ A 25 Disconnection Established date Revised date [...]

28 / 88 → abnormal audio/discontinuation/noise is same after “Check input signal” compa red to No audio C. A udio error Wrecked audio/ discontinuation/noise W recked audio/ Discontin uation/ Noise for all audio Check and replace speaker and connecto r W recked audio/ Discontin uation/ Noise only for D- TV W recked audio/ Discontin uation/ Noi[...]

29 / 88 D. Gen eral Function Problem Remote control & Local switch checking Y N 1. Remote con trol(R/C) operating error Check R/C itself Operation Normal operating? Normal operating? Y Close Replace R/C If R/C operate, Explain the customer cause is interference from light in room. Check R/C Operating When turn off light in room Check & Re p[...]

30 / 88 Check technical inform ation - Fix information - S/W Version N Y Technical information? Check input signal Signal input? Y N External Input and Component Recognitio n error Check and fix external device/cable RGB,HDM I/ DVI, Optical Recognitio n error Replace Mai n B/D Replace Mai n B/D Fix in accordanc e with technical informatio n D. Fu n[...]

31 / 88 Check locati on of noi se Identify noise ty pe Circuit noise Replace PS U(with LED driver) Replace LE D driver Mechanical noise Check locati on of noise OR ※ W hen the nose is severe, replace the module (For models with fix information, upgrade the S/W or provide the description) OR ※ If there is a “T ak Tak ” noise from the cabinet[...]

32 / 88 Replace module Zoom p art with exterior damage Module damage Cabinet damage Replace cabine t Replace remote controller Remote controller damage Stand dent Replace stand F . Exterior defect Exterior defect A djust VCOM Established date Revised date LCD TV Error symptom Standard Repair Process ☞ A 28 2012. 12 .06 Copyright © 2013 LG Electr[...]

33 / 88 G. Netw ork Error Exterior defect Established date Revised date LCD TV Error symptom Standard R epair Process 2012. 12 .06 Y N Check Network status Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check W ired ethernet cab le connection Che ck w hether AP has a probel m or not. Setting  Netw ork  [...]

34 / 88 G. CI+ Competibility Err or Exterior defect Established date Revised date LCD TV Error symptom Standard Repair Process 2012. 12 .06 Y N Check CI CA M status Read Information? Check CA M S/W Version CA M S/W Upgrade By OTA SVC Bulletin? Normal Picture? Y N Y Close Check def ect CI slot pi n Check it’s worked CI+ 1.2 or 1.3 Setting  Ante[...]

35 / 88 Contents of LCD TV Standard Repair Process Detail T echnical Manual N o. Error sympt om Conte nt Page R emar ks 21 B. Power error_No power Check front display LED A17 22 Check power inpu t Voltage & ST-BY 3.5V A18 23 Checking metho d when power is ON A19 24 POWER BOARD voltage measuring method A5 25 26 B. Power error_Off when on, off wh[...]

36 / 88 Entry me thod 1. Press the ADJ b utton on the remote controller for adjustment. 2. Enter into Wh ite Ba lance of item 6. 3. After recording the R, G, B (GAIN, Cut) value of Color T emp (Cool/Medium /W arm), re - enter the v alue after replacing the MAIN BOARD. Standard Repair Process Detail T echnical Manual Check White Balance value A . Vi[...]

37 / 88 Standard Repair Process Detail T echnical Manual Power Board voltage measuring method A . Video error_No video / A udio A5 Established date Revised date Error symptom Content LCD TV Check the DC 24V , 12V , 3.5V . 24 Pi n (Power Board ↔ M ai n Bo ard ) SMAW200 - H24S 1 Power on 2 I nverter On/o ff 3 3.5V 4 PWM Di m #1 5 3.5V 6 PWM Di m #2[...]

38 / 88 MENU  support  signal test  select channel W hen the signal is strong, use the attenuator (-10dB , -15dB, -20dB etc.) Standard Repair Process Detail T echnical Manual TUNER input signal strength checking method A . Video error_Video error , v ideo lag/stop <ALL MODELS> A6 Established date Revised date Error symptom Content LC[...]

39 / 88 Standard Repair Process Detail T echnical Manual LCD-TV Version checking method A . Video error_Video error , v ideo lag/stop 1. Checking method for remote controller for adjustment Press the IN-ST ART with the remote controller for adjustm ent V ers ion <ALL MODELS> A7 Established date Revised date Error symptom Content LCD TV 2012. [...]

40 / 88 Standard Repair Process Detail T echnical Manual LCD TV connection diagram (1) A . Video error _V ertical/Horizontal bar , residual image, light spot A s the pa rt connecting to the external input, check the screen condition by signal A8 Established date Revised date Error symptom Content LCD TV <ALL MODELS> 2012. 12 .06 Copyright © [...]

41 / 88 Checking method: 1. Check the signal strength or check w hether the screen is normal w hen the ex ternal device is connected. 2. Af ter measuring each voltage from power supply , f inally replace the MA IN BOARD. Standard Repair Process Detail T echnical Manual TUNER checking part A . Video error_V ideo error , v ideo lag/stop <ALL MODEL[...]

42 / 88 Standard Repair Process Detail T echnical Manual A djustment T est pattern - ADJ Key A . Video error_Color error Y ou can view 6 types of patterns using the ADJ Key Checking item : 1. Def ective pix el 2. Residual image 3. MODULE error (ADD -BAR,SCAN BAR..) 4.Video error (Classificat ion of MODULE or Main-B/D!) A 12 Established date Revised[...]

43 / 88 Solder de fect, CNT Broken T -Con Def ect, CNT Broken T -Con Def ect, CNT Broken T -Con Def ect, CNT Broken Solder de fect, CNT Broken Solder de fect, CNT Broken Solder de fect, CNT Broken Solder def ect, CNT Broken Abnormal Power Section Solder de fect, Short/Crack Abnormal Power Section Solde r def ect, Short/Crack A pp endix : Exchange E[...]

44 / 88 Abnormal Power Section Solder de fect, Short/Crack Abnormal Power Section Solder de fect, Short/Crack Fuse Open, Abno rmal power section Noise GRADA T ION GRADA T ION Abnormal Display A p pendix : Exchan ge EPI Cable or Main B/D (2) Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Intern[...]

45 / 88 A pp endix : Exchange LPB(LED driv er) No Lig ht Dim Lig ht Dim Lig ht Dim Lig ht Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

46 / 88 A pp endix : Exchange the Module (1) Panel Mura, Light leakage Press damage Crosstalk Crosstalk Press damage Panel Mura, Light leakage Press damage Un -repairable Case s In this ca se pl ease exchange the module. Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only[...]

47 / 88 V ertical Block Source T AB IC Defect Horizontal Block Gate T AB IC Defe ct Gate T AB IC Defe ct Gate T AB IC Defect V ertical Line Source T AB IC Defect V ertical Block Source T AB IC Defect Horizontal Block Gate T AB IC Defe ct Horizontal line Gate T AB IC Defect Gate T AB IC Defe ct Horizontal Block Gate T AB IC Defect A pp endix : Excha[...]

48 / 88 Standard Repair Process Detail T echnical Manual Check front display LED B. Po w er er ror _No pow er A 17 Established date Revised date Error symptom Content LCD TV LOGO LED Front LOGO LED control in the status of ST -BY Cond ition: Menu  Option  LG Logo Light  Brightness(OF F ,LOW ,MIDDLE,HI GH) 2012. 12 .06 Y ou can set the LG L[...]

49 / 88 24 Pi n (Power Board ↔ M ai n Bo ard ) SMAW200 - H24S 1 Power on 2 I nverter On/o ff 3 3.5V 4 PWM Di m #1 5 3.5V 6 PWM Di m #2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 L/DIMO_ VS 23 L /DIM0_M OSI 24 L /DIM0_SC LK Standard Repair Process Detail T echnical Manual Check power in[...]

50 / 88 Standard Repair Process Detail T echnical Manual Checking method when pow er is ON B. Po w er er ror _No pow er A 19 Established date Revised date Error symptom Content LCD TV Check “power on” pin is high 2012. 12 .06 24 Pi n (Power Board ↔ M ai n Bo ard ) SMAW200 - H24S 1 Power on 2 I nverter On/o ff 3 3.5V 4 PWM Di m #1 5 3.5V 6 PWM[...]

51 / 88 Entry method 1. Press the IN-ST ART butto n of the remote controller for adjustment 2. Check the entry into adjustment item 3 Standard Repair Process Detail T echnical Manual POWER OFF MODE checking method B. Power error _Off w hen on, off w hiling viewi ng <ALL MODELS> A 22 Established date Revised date Error symptom Content LCD TV 2[...]

52 / 88 Checking method 1. Press the M ENU butt on on the remote controller 2. Select the SOUND f unction of the Menu 3. Change T V Sound Out to TV Speaker Standard Repair Process Detail T echnical Manual Checking method in menu when there is no audio C. Audio error_No audio/Normal video <ALL MODELS> A 24 Established date Revised date Error s[...]

53 / 88 24 Pi n (Power B oard ↔ Main Board) SMAW200 - H24S 1 Po wer o n 2 Inverter On/ off 3 3.5V 4 PWM Dim #1 5 3.5V 6 PWM Dim #2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 L/DIMO _VS 23 L/DIM0_M OSI 24 L/DIM0_ SCLK Checking order when there is no audio ① Check the con tact conditio[...]

54 / 88 Checking order 1, 2. Check IR cable condition between IR & Main board. 3. Check the st-by 3.5V on the terminal 4. 4. W hen checking the Pre-Amp when the power is in ON condition, it is normal when the An alog T ester needle moves slowly , and defective when it does not move at all. Standard Repair Process Detail T echnical Manual Remote[...]

55 / 88 Standard Repair Process Detail T echnical Manual Sequence of the Vcom ad justment D. VC OM A djustment 1. Case ■ LCD module change ■ T -Con board change 2. Equipment ■ Service Rem ote controller 3. A djust sequence ■ Press the ‘adj’ key ■ select V -COM ■ A s pushing the ri ght or the left button on the remote controller , An[...]