User's Manual

ManualsBrandsLG ManualsCRT TVLG CRT Television 50LN57**-Z*

Printed in KoreaP/NO : MFL67727129 (1303-REV00)

CHASSIS : LD33B

MODEL : 50LN57** 50LN57**-Z*

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

Summary of content (128 pages)

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Internal Use Only North/Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LD33B MODEL : 50LN57** 50LN57**-Z* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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CONTENTS CONTENTS . ............................................................................................. 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS..................................................................... 4 SPECIFICATION........................................................................................ 6 ADJUSTMENT INSTRUCTION...............................................................
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SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE 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 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
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SERVICING 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 create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions 1.
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IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1.
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SPECIFICATION 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. 3. Test method 2. Requirement for Test 1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC Each part is tested as below without special appointment.
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No.
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5. Component Video Input (Y, Pb, Pr) 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 480p 5. 720×576 15.625 50.00 SDTV 576i 6. 720×576 31.25 50.00 SDTV 576p 7. 1280×720 45.00 50.00 HDTV 720p 8. 1280×720 44.96 59.94 HDTV 720p 9. 1280×720 45.00 60.00 HDTV 720p 10. 1920×1080 31.25 50.00 HDTV 1080i 11. 1920×1080 33.75 60.
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6. HDMI Input 6.1. DTV mode No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 1. 640*480 2. 720*480 31.469 / 31.5 59.94/60 SDTV 480P 31.469 / 31.5 59.94 / 60 SDTV 480P 3. 4. 720*576 31.25 50 SDTV 576P 720*576 15.625 50 SDTV 576I 5. 1280*720 6. 1280*720 37.500 50 HDTV 720P 44.96 / 45 59.94 / 60 HDTV 720P 7. 1920*1080 8. 1920*1080 33.72 / 33.75 59.94 / 60 HDTV 1080I 28.125 50.00 HDTV 1080I 26.97 / 27 23.97 / 24 HDTV 1080P 25 HDTV 1080P 29.976 / 30.
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7. 3D Mode 7.1. HDMI 1.4b (3D supported mode automatically) No. Resolution 1 2 640*480 3 4 5 720*480 6 7 8 720*576 9 10 11 720*576 12 H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed 31.469 / 31.5 59.94/ 60 25.125 1 Top-and-Bottom Side-by-side(half) Secondary(SDTV 480P) Secondary(SDTV 480P) 62.938/63 59.94/ 60 50.35/50.4 1 Frame packing Line alternative Secondary(SDTV 480P) (SDTV 480P) 31.469 / 31.5 59.94/ 60 50.35/50.
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7.2. HDMI Input(1.3) No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 1 1280*720 45.00 60.00 74.25 HDTV 720P 2 1280*720 37.500 50 74.25 HDTV 720P 3 1920*1080 33.75 60.00 74.25 HDTV 1080I 4 1920*1080 28.125 50.00 74.25 HDTV 1080I 5 1920*1080 27.00 24.00 74.25 HDTV 1080P 6 1920*1080 28.12 25 74.25 HDTV 1080P 7 1920*1080 33.75 30.00 74.25 HDTV 1080P 8 1920*1080 67.50 60.00 148.5 HDTV 1080P 9 1920*1080 56.25 50 148.
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7.6. HDMI-PC Input (3D supported mode manually) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed 1 1024*768 48.36 60 65 2D to 3D, Side by Side(half) Top & Bottom 2 1360*768 47.71 60 85.5 2D to 3D, Side by Side(half) Top & Bottom HDTV 768P 148.50 2D to 3D, Side by Side(half) Top & Bottom, Checker Board, Single Frame Sequential, Row Interleaving, Column Interleaving HDTV 1080P 2D to 3D 640*350 720*400 640*480 800*600 1152*864 3 4 1920*1080 67.
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ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LED TV with LD33B chassis. 3.2. LAN Inspection 3.2.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig 2. Designation (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. (2) Adjustment must be done in the correct order.
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3.2.3. WIDEVINE key Inspection - Confirm key input data at the "IN START" MENU Mode. 3.4. Model name & Serial number Download 3.4.1. Model name & Serial number D/L Press "P-ONLY" key of service remote control. (Baud rate : 115200 bps) ▪ Connect RS-232C Signal to USB Cable to USB. ▪ Write Serial number by use USB port. ▪ Must check the serial number at Instart menu. ▪ 3.4.2. Method & notice (1) Serial number D/L is using of scan equipment.
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4. Manual Adjustment 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) CMD 1 CMD 2 Data 0 A A 0 * ADC adjustment is not needed because of OTP(Auto ADC adjustment) 0 2) Check the key download for transmitted command (RS232: ci 00 10) CMD 1 CMD 2 C I 4.1. EDID DATA 4.1.1. 3D EDID Data 0 1 0 3) Result value - Normally status for download : OKx - Abnormally status for download : NGx 3.
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4.1.2. 2D EDID 4.2.3. Equipment connection MAP Co lo r Analyzer RS -232C Probe Co m p ut er RS -232C RS -232C Pat t ern Generat o r Signal Source * If TV internal pattern is used, not needed ▪ Reference - HDMI1 ~ HDMI4 / RGB - In the data of EDID, bellows may be different by S/W or Input mode. ⓐ Product ID HEX 0001 0001 EDID Table 0100 0100 4.2.4. Adj. Command (Protocol) DDC Function Analog Digital ⓑ Serial No: Controlled on production line.
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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 adj. 5) When adj. is complete (OK Sign), check adj. status pre mode. (Warm, Medium, Cool) 6) Remove probe and RS-232C cable to complete adj. ▪ W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”, and Adj. offset if need.
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4.3. Local Dimming Function Check (2) When 3D OSD appear automatically, then select OK key. Step 1) Turn 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 "exit" key. (3) Don't wear a 3D Glasses, check the picture like below. 4.6. Wi-Fi Test 4.4.
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4.7. LNB voltage and 22KHz tone check (only for DVB-S/S2 model) ▪ Test method (1) Set TV in Adj. mode using POWER ON. (2) Connect cable between satellite ANT and test JIG. (3) Press Yellow key(ETC+SWAP) in Adj Remote control to make LNB on. (4) Check LED light ‘ON’ at 18 V menu. (5) Check LED light ‘ON’ at 22 KHz tone menu. (6) Press Blue key(ETC+PIP INPUT) in Adj Remote control to make LNB off. (7) Check LED light ‘OFF’ at 18 V menu. (8) Check LED light ‘OFF’ at 22 KHz tone menu. 7.
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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 your downloaded program version in USB Stick is Lower, it didn’t work. B ut your downloaded version is Higher, USB data is automatically detecting (Download Version High & Power only mode, Set is automatically Download) (3) Show the message “Do not unplug!” (4) Updating is starting.
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EXPLODED VIEW IMPORTANT SAFETY NOTICE * Set + Stand * Stand Base + Body A10 120 A22 A9 A2 300 Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Stand Base Set + Stand + Stand Body A2 A10 301 500 122 A10 * Set + Stand * Stand Base + Body 560 Option 200 200T 123 530 510 570 LV1 540 Option 521 900 910 400 Many electrical and mechanical parts in this chassis have special safety-related characteristics.
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EAX64797001* : LD33B EAX64872101* : LA33B X-TAL IC100-*1 M24256-BRMN6TP NVRAM +3.3V_NORMAL E0 E1 E2 R101 4.7K R102 4.7K OPT R100 IC100 AT24C256C-SSHL-T VSS 8 2 7 3 6 4 5 VCC A0 WC A1 SCL A2 SDA VSS NVRAM_ST A0 4.7K OPT +3.3V_NORMAL 1 IC100-*2 R1EX24256BSAS0A A1 A2 1 8 2 7 3 6 1 8 2 7 3 6 4 5 X-TAL_1 1 C114 GND_1 1.0pF 2 50V DVB_1pF MT5398_XTAL_IN Close to eMMC Flash (IC8100) GND_2 4 X-TAL_2 3 EMMC_CLK WP R168 10K MT5398_XTAL_OUT C115 1.
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PLACE AT JACK SIDE Close to JACK Close to Main Chip C345 10uF 16V +5V_NORMAL 1608 sizs For EMI 1.
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IC105 LGE2122[A2_M13] +1.2V_MTK_CORE L11 N12 +1.2V_MTK_CORE +3.3V_NORMAL +1.2V_MTK_CORE VDD3V3 P12 OPT OPT AG5 60mA L501 BLM18PG121SN1D AH5 OPT C505 10uF C503 10uF 5600mA C507 0.1uF C514 10uF C508 2.2uF C517 10uF C523 0.1uF C520 0.1uF C513 10uF C532 0.1uF C527 0.1uF C535 0.1uF AJ5 AK5 AL5 AM5 AN5 AK6 AL6 AM6 AN6 M11 N11 P11 R11 M12 R12 L13 L14 +3.5V_ST_WAKE VDD3V3 L15 AVDD_33SB L17 L18 OPT L503 BLM18PG121SN1D L19 T11 U11 V11 W11 OPT L502 BLM18PG121SN1D +1.2V_MTK_CORE +1.
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PLACE AT JACK SIDE R610 51K SC_ID_SOC SC_ID 1/16W 1% EU R613 10K EU READY FOR FILTER (EMI) L611 SC_CVBS_IN SC_CVBS_IN_IF 120-ohm C601 10pF OPT C607 100pF EU EU SC_FB R604 75 1% EU SC_FB_SOC R608 75 1% EU R609 22 EU PLACE AT MAIN SOC SIDE R605 75 1% EU 100 R622 SC_G R606 75 1% EU SC_B R607 75 1% EU C615 EU C604 10pF EU C605 10pF EU 0.01uF 100 C614 EU 0 R620 R637 1/16W EU R621 100 C612 100 C613 SC_G_SOC 0.01uF SC_COM_SOC EU EU SC_CVBS_IN_IF 0.
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DDR_512MB_SS DDR_512MB_SS IC703 K4B4G1646B-HCK0 IC701 K4B4G1646B-HCK0 +1.5V_DDR A_RVREF2 ARA[0-14] +1.5V_DDR A_RVREF4 A_RVREF1 R706 1K 1% M8 A0 VREFCA A1 A_RVREF1 R707 1K 1% A2 H1 A3 VREFDQ C714 0.1uF 1% 240 R710 A4 A5 L8 A6 ZQ +1.5V_DDR A7 +1.5V_DDR A8 B2 D9 A_RVREF4 R708 1K 1% C715 0.1uF G7 K2 K8 N1 R709 1K 1% +1.5V_DDR ARA[0-14] C713 0.1uF N9 C716 0.
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CI_DATA[0-7] CI_A_DATA[0-7] CI_A_DATA[0] AR904 0 CI CI_DATA[1] CI_A_DATA[1] CI DETECT CI_A_DATA[2] CI_DATA[2] CI_A_DATA[3] CI_DATA[3] CI_A_DATA[4] +3.
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FROM LPB & PSU +12V L2401 CIS21J121 C2401 0.1uF 50V L/DIM0_MOSI_PWR 8 GND 24V 9 10 24V GND 11 12 GND 12V 13 14 12V 12V 15 16 24V 17 18 GND GND 19 20 GND 22 L/DIMO_VS 24 L/DIM0_SCLK GND 21 L/DIM0_MOSI 23 19 D S R2442 33K C2440 1uF 25V OPT L/DIM0_MOSI_PWR L/DIM_OUT R2456 33 L/DIM0_VS L/DIM0_VS_PWR G C2435 4.7uF 50V VDD3V3_HDMI L/DIM0_MOSI C2413 0.1uF 50V GND L/DIM0_SCLK_PWR L/DIM_OUT R2458 33 +24V L2403 CIS21J121 L/DIM0_VS_PWR NTR4501NT1G Q2408 C2453 0.
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Renesas MICOM For Debug 32.768KHz 2 HDMI_WAUP:HDMI_INIT MICOM_DEBUG MICOM_DEBUG X3000 1 R3028 LOGO_LIGHT LOGO_LIGHT 8pF C3003 MICOM_RESET 8pF Don’t remove R3014, not making float P40 C3002 R3016 1K P3000 12507WS-04L R3014 10K MICOM_DEBUG MICOM_DEBUG +3.5V_ST +3.5V_ST 3 MHL_DET MICOM_RESET 4 4.7M OPT 5 R3030 P120/ANI19 MICOM_RESET_SW SW3000 JTP-1127WEM 270K OPT P124/XT2/EXCLKS 41 37 P123/XT1 42 P41/TI07/TO07 P137/INTP0 43 P40/TOOL0 P122/X2/EXCLK 44 C3001 +3.
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CK-_HDMI4_JACK CK+_HDMI4_JACK D0+_HDMI4_JACK D0-_HDMI4_JACK 6 5 NON_TU_H/N/S_T/US 5.1 4 OPT 7 8 9 10 L3302 BLM18PG121SN1D +3.3V_NORMAL Close to SIL1292 VDD33_1 RXC- 3 1 2 R3389 R3388 5.1 RX0- RX0+ RX1- RX1+ RX2- RX2+ RXC+ D1+_HDMI4_JACK D2-_HDMI4_JACK D2+_HDMI4_JACK D1-_HDMI4_JACK D3302 RCLAMP0524PA 6 5 8 9 10 7 4 3 2 1 OPT D3303 RCLAMP0524PA VDD33_2 [EP]GND +3.3V_NORMAL SIL_HPD/CBUS 1.2V_MHL +1.23V_D_Demod C3320 0.1uF 16V C3316 0.
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SPDIF 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. Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes JST1223-001 JK3602 2 3 4 VCC VINPUT C3602 0.1uF 16V Fiber Optic R3610 33 SPDIF_OUT FIX_POLE GND R3611 2.
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JK3700 PEJ034-01 E_SPRING 3 R_SPRING 4 T_SPRING 5 HP_ROUT HP_LOUT B_TERMINAL2 7B T_TERMINAL2 6B +3.3V_NORMAL R3700 10K R3701 1K HP_DET 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. Copyright © 2013 LG Electronics. Inc. All rights reserved.
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AV/COMPONENT REAR UART FOR DEBUG R3822 0 COMP1_Y/AV1_CVBS +3.3V_NORMAL OPT C3800 0.1uF JK3802 PPJ245-02 UART_4PIN_STRAIGHT 12507WS-04L 1 2 3 SOC_TX [GN]E-LUG 6E [GN]C-SPRING P3800 +3.5V_ST SOC_RX 7E 4E [GN]CONTACT 5D [BL]C-SPRING 4C [RD2]CONTACT 6C [RD2]C-SPRING 8C [RD2]E-LUG-S 5B [WH]C-SPRING 4A [RD1]CONTACT 6A [RD1]C-SPRING 7A [RD1]E-LUG R3806 10K R159 1K D3803 5.6V AV1_CVBS_DET +3.3V_NORMAL COMP1_Pb OPT C3801 0.
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+3.5V_ST_WAKE +3.5V_ST L4111 BLM18PG121SN1D MAX 0.4A WIFI +3.3V_NORMAL R4117 10K 5% 120-ohm R4118 10K 5% L4112 BLM18PG121SN1D C4113 R4113 100 12507WR-10L 12507WR-08L R4114 100 KEY2 C4100 0.1uF C4102 0.1uF D4101 5.6V AMOTECH CO., LTD. OPT GND D4100 5.6V AMOTECH CO., LTD. OPT +3.5V_ST KEY1 KEY2 L4100 BLM18PG121SN1D +3.5V_ST C4112 10uF 10V WIFI P4102 P4101 KEY1 10uF 10V WIFI C4111 0.1uF 16V WIFI OPT C4110 0.1uF 16V OPT For EMI 1 2 M_REMOTE&WIFI_WAFER P4100 +3.
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+5V_USB_2 USB2 MAX 1.5A 10uF 10V 4 C4322 5 USB_DP2 OPT RCLAMP0502BA D4302 USB_DM2 3 2 USB DOWN STREAM 1 3AU04S-305-ZC-(LG) JK4302 OCP USB2/3 USB3 +5V_USB_3 FLT2 C4337 10uF 10V /USB_OCD3 C4301 10uF 10V USB3 1 5 2 4 USB3 3AU04S-305-ZC-(LG) JK4300 +5V_USB_3 OUT2 USB_DM3 USB_DP3 C4310 10uF 10V USB3 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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+3.3V_NORMAL USB1 OCP USB1 R4500 10K OPT +5V_USB_1 R4501 10K IC4500 BD82020FVJ DVR Ready MAX 1.5A 3AU04S-305-ZC-(LG) JK4500 +5V_USB_1 +5V_NORMAL EN /USB_OCD1 3 6 4 5 OUT_1 1 USB_DM1 C4501 10uF 10V OC 2 OUT_2 USB_DP1 3 7 USB DOWN STREAM IN_2 2 OUT_3 C4502 10uF 10V 4 C4500 0.1uF 16V 8 5 IN_1 1 OPT RCLAMP0502BA D4500 GND USB_CTL1 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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+3.3V_NORMAL EU R4601 10K CLOSE TO JUNCTION R4602 1K SC_DET EU C4604 0.1uF VA4601 5.6V OPT Full Scart(18 Pin Gender) SC_CVBS_IN VA4609 5.5V EU EU EU 1/16W AV_DET 22 COM_GND 21 SYNC_IN 0 R8904 VA4610 5.5V EU DTV/MNT_V_OUT 20 SYNC_OUT 19 SYNC_GND2 18 SYNC_GND1 17 RGB_IO SC_FB 16 VA4602 5.6V R_OUT 15 RGB_GND EU 14 R_GND SC_R 13 D2B_OUT 12 VA4603 5.5V OPT G_OUT 11 D2B_IN 10 G_GND 9 SC_G ID 8 VA4604 5.5V B_OUT 7 AUDIO_L_IN OPT 6 B_GND 5 SC_B AUDIO_GND 4 AUDIO_L_OUT VA4605 5.
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Ethernet Block C5000 0.1uF 16V C5001 0.01uF 50V NON_LN56 JK5000 RJ45VT-01SN002 1 2 3 4 5 6 7 8 1 EPHY_TDP 2 3 EPHY_TDN 4 EPHY_RDP 5 6 EPHY_RDN 7 8 D5000 D5001 5.5V LAN_ESD 5.5V LAN_ESD D5002 5.5V LAN_ESD D5003 5.5V LAN_ESD 9 9 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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L5404-*1 10.0uH Audio_Coil_TAIYO NRS6045T100MMGK L5405-*1 10.0uH Audio_Coil_TAIYO NRS6045T100MMGK 1ST : 0TRIY80001A L5402-*1 10.0uH C5415 1000pF 50V 2ND : 0TR387500AA C5416 L5401 BLM18PG121SN1D AUD_MASTER_CLK C R5400 10K AMP_MUTE_MICOM B 100 AMP_MUTE_MICOM Q5400 MMBT3904(NXP) E AMP_MUTE_MICOM PVDD1B 31 OUT1A PVDD1A 32 33 BST1A PGND1A 34 35 AD CLK_I GND_IO RESET 36 R5416 5.
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+12V EU AUD_OUT >> EU/CHINA_HOTEL_OPT IC6000 AZ4580MTR-E1 L6000 EU EU OUT1 R6000 C6000 1uF 25V EU OPT C6002 6800pF OPT R6002 33K EU R6004 IN1- 470K C6003 33pF EU IN1+ VEE SCART_AMP_L_FB 1 8 2 7 4 C6004 EU 0.1uF OUT2 R6011 2.
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HP_OUT_H13 HP_OUT_H13 C6109-*1 18pF C6104-*1 18pF EARPHONE AMP IC6100 TPA6138A2 HP_OUT C6100 R6100 1uF 10V HP_OUT 10K +INR HP_OUT_MTK C6104 180pF HP_OUT R6106 43K HP_OUT -INR HP_ROUT_MAIN 1% R6103 33K HP_OUT_MTK HP_OUT_H13 R6103-*1 43K C6108 10pF 50V OUTR 1 14 2 13 3 12 +INL HP_OUT_MTK HP_OUT R6104 -INL HP_OUT 43K C6109 180pF HP_OUT R6101 10K C6101 1uF 10V HP_OUT HP_LOUT_MAIN OUTL C6106 10pF 50V 1% R6102 33K HP_OUT_MTK HP_LOUT_AMP HP_ROUT_AMP GND_1 +3.
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CI POWER ENABLE CONTROL IC6200 AP2151WG-7 +5V_NORMAL IN 5 +5V_CI_ON 1 OUT CI 2 CI R6217 100 PCM_5V_CTL EN 4 3 GND FLG C6210 1uF 25V CI R6219 10K CI R6218 10K CI 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. Copyright © 2013 LG Electronics. Inc.
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B-CAS (SMART CARD) INTERFACE +3.3V_NORMAL INT CMDVCC : STATUS --------------------------------HIGH HIGH CARD PRESENT LOW HIGH CARD not PRESENT +3.3V_NORMAL IC6300 TDA8024TT OPT OPT R6304 2.7K JAPAN R6306 5V/3V R6300 22 R6302 SMARTCARD_PWR_SEL/SD_EMMC_DATA[1] PGND +5V_NORMAL S2 JAPAN 28 2 27 3 26 4 25 5 24 6 23 AUX2UC AUX1UC JAPAN R6316 1.2K JAPAN 1 OPT R6319 1.2K CLKDIV2 JAPAN R6315 1.2K CLKDIV1 OPT R6318 1.
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/TU_RESET2 RF_SWITCH_CTL_50 FE_DEMOD1_TS_ERROR +3.3V_TU TU_Q/W_KR/BR/TW/CO/JP L6508 BLM18PG121SN1D TU_S/N/Q/W close to TUNER /TU_RESET1 C6520 0.1uF 16V TU_N/M_CN/TW/BR R6508-*1 TU_N_TW/BR /TU_RESET1_TU 3 I2C_SCL6_TU TU_N/Q/W_KR/TW/BR/CO 4 I2C_SDA6_TU 5 +3.3V_TU 6 TUNER_SIF_TU 7 TU_+1.8V_TU 8 TU_CVBS_TU 10 C6508 47pF 50V mA(MAX) R6501 1K TU_M/W_BR/TW/CO/CN 33 IF_N 12 +3.
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TU6600 TDSS-G501D(B) TU6601 TDSQ-G501D(B) LNB_TX FE_DEMOD3_TS_ERROR LNB_OUT FE_DEMOD2_TS_ERROR TU6602 TDSW-J501F(B) TU_Q_T2/S2 TU6601-*1 TDSQ-G601D(B) TU_S_T NC_1 TU_W_JP TU_Q_T/S2 NC_1 1 1 2 1 1 +5V_OR_+3.3V_SPLITTER 3 RF_SWITCH_CTL_TU 1 4 5 RESET RESET 2 2 2 RESET_T1 6 /TU_RESET1_TU 2 7 8 SCL SCL 3 3 3 SCL_T 9 I2C_SCL6_TU 3 10 11 SDA 4 3.3V TU6503 TDSM-C601D(B) I2C_SCL6_TU I2C_SDA6_TU 5 SDA 4 4 SDA_T 12 I2C_SDA6_TU 4 13 14 +B1[3.3V] 5 5 +3.
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RS-232C Control INTERFACE JAPAN_HOTEL JK6800 PEJ034-01 E_SPRING 3 R_SPRING 4 T_SPRING 5 JAPAN_HOTEL R6820 100 JP6800 +3.5V_ST JAPAN_HOTEL R6821 100 C6812 0.33uF OPT OPT ZD6802 ADUC 20S 02 010L 20V JAPAN_HOTEL C6813 0.1uF JAPAN_HOTEL IC6801 OPT ZD6803 ADUC 20S 02 010L 20V JP6801 B_TERMINAL2 7B T_TERMINAL2 6B MAX3232CDR C1+ JAPAN_HOTEL C6808 0.1uF JAPAN_HOTEL C6809 0.1uF V+ C1- C2+ JAPAN_HOTEL C6810 0.1uF C2- V- JAPAN_HOTEL C6811 0.
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DVB-S2 LNB Part Allegro (Option:LNB) Input trace widths should be sized to conduct at least 3A 3A Ouput trace widths should be sized to conduct at least 2A +12V 2A D6904-*1 Max 1.3A 40V LNB_SX34 VIN 14 GND 13 VREG 12 ISET 11 TCAP LNB 5 A_GND Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes LNB A_GND LNB R6903 39K C6912 1/16W 1% LNB 0.
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LVDS LVDS_51PIN P7100 FI-RE51S-HF-J-R1500 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 [51Pin LVDS OUTPUT Connector] NC NC [41Pin LVDS OUTPUT Connector] 2D/3D_CTL R7100 33 LGD_2D/3D_CTRL LVDS_SEL NC NC NC AUO_65_MIRROR R7105 33 CP_BOX R7106 33 CP_BOX 0 NC L/DIM_ENABLE GND I2C_SCL1 R7101 R7109 3.3K LVDS_SEL_HIGH OPT LVDS_SEL NC +3.
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LOCAL DIMMING [To LED DRIVER] P7600 12507WR-08L L/DIM_OUT_8P 1 R7601 10K L/DIM_OUT_8P 2 3 L/DIM0_SCLK_PWR 4 5 6 7 L/DIM0_MOSI_PWR R7603 33 I2C_SCL1 L/DIM_OUT_8P R7602 33 I2C_SDA1 L/DIM_OUT_8P 8 L/DIM0_VS_PWR 9 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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VCC VCOM_P R7730 OPT 1/16W VCOM_N R7759 0 1/16W R7737 OPT 1/16W R7760 0 INSTEAD OF AMCC0208 1/16W Q7700 MMBT3904(NXP) 100K E R7728 C VCOM_LOOP VCOM1_FB VCC18 D7703 1N4148W 1/16W 5% VGL_FB B CTRLN L7700 VGL R7710 VCOM_DYN GMA4 GMA5 GMA7 VCOMFB POS NEG VCOM GMA6 GMA5 GMA4 GMA3 GMA2 GMA1 43 42 41 40 39 38 37 VGH TPS65178RSLR 31 CTRLP TCOMP 29 VL SWB1_2 COMP PVINB1_2 12 25 SS VGH I2C_SDA2 COMP R7727 100K C7755 1uF 50V D7706 1N4148W 100V
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VDD_EPI EPI EPI C7800 68uF C7801 68uF 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. Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes VDD 2011.12.
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eMMC I/F A5 B2 B3 3.
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+24V_AMP OPT C5450 10uF 35V 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. Copyright © 2013 LG Electronics. Inc. All rights reserved.
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USE Two serial TS Port for Japan : MTK JAPAN TUNER INTERFACE FE_DEMOD1_TS_DATA[1] R8500 A2 Ball Name Function FE_DEMOD1_TS_DATA[1] DEMOD_TSCLK Ext_TS_CLK FE_DEMOD1_TS_DATA[3] DEMOD_TSSYNC Ext_TS_Sync FE_DEMOD1_TS_DATA[4] DEMOD_TSDATA0 Ext_Ts_D0 FE_DEMOD1_TS_DATA[2] DEMOD_TSVAL FE_DEMOD1_TS_CLK DEMOD_TSDATA1 0 FE_DEMOD3_TS_CLK TU_J_JP FE_DEMOD1_TS_DATA[3] R8501 0 FE_DEMOD3_TS_SYNC TU_J_JP FE_DEMOD1_TS_DATA[4] R8502 0 FE_DEMOD3_TS_DATA TU_J_JP FE_DEMOD1_TS_DATA[2] R8506 0 Ext_Ts_VAL F
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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.
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◈ 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.
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EPI Interface EPI(Embedded Point-Point Interface) TCON 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 LOCK 2 VCC 1 Figure1. Topology Merits • • • • Better reliability on common noise No data skew and better EMI margin Fewer lines than mini-LVDS Slim PCB design Copyright © 2013 LG Electronics. Inc. All rights reserved.
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EPI Interface (mini-LVDS vs. EPI) Comparison What to change HF mini-LVDS LCM (T-con to S-Driver IC) FHD (10bit) HF miniLVDS 60Hz 120Hz 240Hz No. of Signal 36 36 72 Connector 60pin (2ea) 60pin (2ea) 80pin (2ea) HF mini-LVDS TCON 18 VCC -Difficult to upgrade bandwidth limit -Multiple number of wires needed for higher bandwidth 18 1 (FHD 120Hz) EPI (Embedded clock P-to-P Interface) FHD (10bit) EPI 60Hz 120Hz 240Hz 960ch 960ch 720ch No.
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EPI Interface (mini-LVDS vs. EPI) HF mini-LVDS EPI TCON TCON Lock Topology 1 2 Protocol Features @10bit, FHD120 Merit Demerit • Multi Drop • Data rate: 660Mbps • External clock • Point to Point • Data rate : 1.
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NFC (Near field communication) User Action Area Near field communication (NFC) is a set of standards for smartphones and similar 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 include contactless transactions, data exchange, and simplified setup of more complex communications such as Wi-Fi.
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Main PCB for Broadband Main + TCON all in one 1 xxLA660S-Zx To PSU Chassis : LD33B PCB P/No : EAX64797003 3 S model 5 LNB IC Block Only S model 2 1 To module 6 WIFI/BT Key+IR 2 1 Main processor, DDR Memory eMMC Memory 2 Micom for Key/IR sensing 3 PMIC 4 Audio AMP 5 EPI Wafer 6 Level shifter 1 2 Front Spk 4 Copyright © 2013 LG Electronics. Inc. All rights reserved.
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1. LGE2122 Block Diagram T/C/S2 Without ATV DDR3 1600 X 16 (512MB X 2EA) X_TAL 27MHz CI Slot P_TS R E A R (H) Air/ Cable DVB-S TUNER (T/C/A) TUNER (S2) IF (+/-) Tuner : I2C 6 DEMOD (S2) S I D E DVB-S : I2C 4 P_TS USB1 (HDD) OCP 2.
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2. LGE 2122 I2C Block Diagram +3.3V_Normal +3.5V_ST 2.7KΩ 3.3KΩ IC3000 Renesas MICOM 33Ω IC105 LGE 2122 IC3304 MHL +3.3V_Normal I2C_SDA3 I2C_SCL3 2.7KΩ 33Ω LNB 22Ω TUNER(S) +3.3V_Normal I2C_SDA4 I2C_SCL4 2.7KΩ 33Ω +3.3V_Normal IC7700 PMIC 33Ω I2C_SDA2 I2C_SCL2 2.7KΩ +3.3V_Normal I2C_SDA5 I2C_SCL5 1.2KΩ IC8101 NTP7513(AMP) 100Ω P7600 Local dimming 33Ω IC101 HDCP EEPROM 22Ω 33Ω IC100 NVRAM 33Ω TUNER(D) +3.3V_Normal 33Ω I2C_SDA1 I2C_SCL1 2.
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3. Power Block Diagram 3.5V 1.5V DDR 3A MICOM(VDD) IR A'ssy MTK (DDRV) DDR(VDD) DDR(VDDQ) 1.23V 2A TUNER(+1.23V) 5V Normal 3A 12V PANEL_VCC +12V_LNB PANEL_POWER LNB option HDMI_EEPROM RGB_EEPROM CI (+5V_CI_ON) TUNER(+5V_TU) 1.2V Core 6A 3.3V DAC MTK(AVDD12_LVDS) MTK(AVDD_) MTK(VCCK) 3.3V Noraml 4A 5V USB 1CH DCDC 4A 2CH OCP 1.2A NTP_7400(PVDD1) NTP_7400(PVDD2) 24V AMP Copyright © 2013 LG Electronics. Inc. All rights reserved.
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4. Tuner/CI Block Diagram TDSQG501D [+3.3V_S2_DEMOD] 32 [+3.3V_TUNER] 5 +3.3V_D_Demod +3.3V_TU +1.8_TU +1.23V_D_Demod +3.3V_NORMAL [+.1.8V_TUNER] 7 CI Slot 3.3K Ω [+1.
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5.
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6.
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7. HDMI DDC_SCL_1_SOC DDC_SDA_1_SOC HDMI_ARC TMDS Link 8bits HDMI1 DDC_SCL_2_JACK CEC_REMOTE DDC_SDA_2_JACK TMDS Link 8bits LGE 2122 HDMI2 I2C_SCL4 DDC_SCL_3_JACK I2C_SDA4 TMDS Link 8bits DDC_SDA_3_JACK SIL1292 5V_MHL TMDS Link or MHL Link OCP 5V_BUS HDMI3 Q3001 HDMI_CEC MHL_DET X-tal 32.768kHz Copyright © 2013 LG Electronics. Inc. All rights reserved.
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8. Panel Interface Block Diagram PANEL_VCC (+12V) VCC VCC1.
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9. PMIC & Level Shift Bloc Diagram PANEL_VCC Boost Converter Buck 1 converter(VCC) Buck 2 converter(Vcore) Buck 3 converter(HVdd) Buck 4 converter(VCC18) Vdd VCC Vcore HVdd SWN Positive Charge Pump Controller Negative Charge Pump Controller 6-Ch Gamma Buffer(DAC output) Level Shift VCC18 CTRLN SWP CTRLP TPS65198 TR/ Diode TR/ Diode VGL VGH GAM4/5/7/12/14/15 VCOM_P Vcom reference & gain Reset VCOM_N VCOM_LOOP PMIC_RESET PMIC TPS65178 Copyright © 2013 LG Electronics. Inc.
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10.
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Introductions of 13Y RF ass’y + Magic Remote control 1. System 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5. Pairing/Un-pairing Method Copyright © 2013 LG Electronics. Inc. All rights reserved.
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1. System UART or USB RF RF Receiver TV Remote  Pairing Information Transmission (Send to TV after Paired) • Static Calibration Data (Bypass only) • Remote FW ver. (Save also in Receiver) • BD_ADDR (Save also in Receiver) • Pairing Information Transmission Sequence • When it is paired, the remote sends packets(pairing success, F/W version, BD_ADDR) to the receiver. • The receiver sends the pairing success packet to TV directly. • F/W version and BD_ADDR packets are just saved on the receiver.
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2. Remote Buttons (M4 vs.
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3. MR13 Block Diagram MPU-6150 (Gyro+ACC) (Invensense) IR Emitter1 I2C ch1 512Kb (Serial F/M) Antenna IR Emitter2 (Voice Scene IR) BCM20733M A2 BCM20702M (BROADCOM) Bluetooth 4.0 (BROADCOM) Bluetooth 3.0 Key Button (4x4) 512Kbit (Serial Flash) Voice Antenna Partron SPI I2S X-tal 24 MHz WM8950 (Wolfson) I2C ch2 Codec(ADC ) Wheel Encoder MIC. (Knowles) X-tal 20 MHz UART 4-mode Only Power Management AA x 2 Battery DC-DC Boost TI TPS61097 SOT23-5 2.8V LDO 2.
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4. Function list 주요 Item IC Voice Codec Manufacturer Function WM8950 Wolfson 16KHz Sampling of Audio data SPU0414HR5H Knowles Sensing Voice Voice MEMS Mic.
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5. RF Pairing / Un-pairing Method Method RF Pairing RF Unpairing Description  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. • When TV receive the IR signal, it should send "pairing request packet" to the RF receiver.
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WIFI Built in ass’y feature Block diagram 30 48 3.3V Wafer USB DP, DN 3.3V DCDC EUP3010 1.2V - Pin map GND 6pin 1.25mm WOL 3.3V 1.2V RX/TX USB DP, DN Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes Antenna 2.4G/5G BCM43236B RX/TX Crystal 20MHz Switch DM3030 Switch DM3030 10 / 88 Antenna 2.
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Widevine & HDCP 2.0 & NETFLX Contents 표지 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM 2012. 12. 08 LCD TV LCD TV R&D Lab / HW1 team Copyright © 2013 LG Electronics. Inc. All rights reserved.
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1. Widevine? [Widevine] Widevine is the Solution(Library) offering Adaptive Streaming and DRM. In BBTV, when special CP do service, this module is required key. Currently CP which is requested to widevine, is typically Australian Bigpond Live and North American CinemaNow. Furthermore, because the future will be the spread of CP, widevine key download for the global model should be applied to production.
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2. HDCP 2.0 & NETFLIX?  HDCP  High-bandwidth Digital Content Protection  Protect high-value digital motion pictures, television programs and audio against unauthorized interception and copying between a digital set top box or digital video recorder and a digital TV or PC.  Specification developed by Intel Corporation to protect digital entertainment across the DVI/HDMI interface.  Why HDCP2.0?  HDCP revision 2.0 supports a broader range of wired and wireless interfaces.
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3. DTCP? [DTCP] The Digital Transmission Content Protection Specification defines a cryptogrphic protocol for protecting audio/video entertainment content from unauthorized copying, intercepting, and tampering as it traverses digital transmission mechanisms such as a high-performance serial bus that conforms to the IEEE 1394-1995 standard.
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Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page 1 No video/Normal audio 1 2 No video/No audio 2 3 A.
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Contents of LCD TV Standard Repair Process Detail Technical Manual No.
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Standard Repair Process Error symptom LCD TV A. Video error Established date No video/ Normal audio Revised date 2012. 12 .06 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 B/D Cable,,,) ☞A1 No video Normal audio Normal audio Y Check Back Light On with naked eye N Move to No video/No audio ☞A4 Y On Check Power Board 12v,3.5v etc.
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Standard Repair Process LCD TV Error symptom A. Video error Established date No video/ No audio Revised date 2012. 12 .06 ☞A4 No Video/ No audio Check various voltages of Power Board ( 3.5V,12V,20V or 24V…) Normal voltage? Y N Check and replace MAIN B/D End Replace Power Board and repair parts Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Error symptom LCD TV ☞ A6 Check RF Signal level Normal Signal? Y A. Picture Problem Established date Picture broken/ Freezing Revised date 2012. 12 .06 . 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%) Check whether other equipments have problem or not.
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Standard Repair Process Error symptom LCD TV ☞ A6 Check RF Signal level Normal Signal? Y N A. Picture Problem (DVB-S/S2) Established date Tuning fail, Picture broken/ Freezing Revised date 2012. 12 .06 Check RF signal cable (DVB satellite signal or not) Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → Set-Top-Box, Different maker TV etc Check satellite setting. - Check LNB frequency.
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Standard Repair Process LCD TV Error symptom ☞A8 Check color by input -External Input -COMPONENT -RGB -HDMI/DVI A. Video error Established date Color error Revised date 2012. 12 .
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Standard Repair Process LCD TV Established date A. Video error Error symptom Vertical / Horizontal bar, residual image, light spot, external device color error 2012. 12 .
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Standard Repair Process LCD TV Error symptom B. Power error Established date No power Revised date ☞A17 Check Power LED . Stand-By: Red . Operating: white 2012. 12 .06 ☞A19 DC Power on by pressing Power Key On Remote control Y Power LED On? N Normal operation? N Check Power On ‘”High” OK? Y Replace Power B/D Y Check Power cord was inserted properly Replace Main B/D ☞A4 N Measure voltage of each output of Power B/D Normal? Y Y ※ Close Check ST-BY 3.
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Standard Repair Process LCD TV Established date B. Power error Error symptom Off when on, off while viewing, power auto on/off 2012. 12 .
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Standard Repair Process LCD TV Error symptom C. Audio error Established date No audio/ Normal video Revised date ☞A24 No audio Screen normal Check user menu > Speaker off 2012. 12 .06 ☞A25 N Off Check audio B+ 24V of Power Board Normal voltage Y N Cancel OFF Check Speaker disconnection Y Replace Power Board and repair parts Disconnection N Replace MAIN Board End Y Replace Speaker Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process LCD TV C. Audio error Error symptom Wrecked audio/ discontinuation/noise Established date 2012. 12 .
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Standard Repair Process Error symptom LCD TV D. General Function Problem Established date Remote control & Local switch checking Revised date 2012. 12 .06 1. Remote control(R/C) operating error ☞A27 Check R/C itself Operation ☞A27 Check & Repair Cable connection Connector solder Normal Y operating? N Normal operating? N Y Check R/C Operating When turn off light in room Check & Replace Baterry of R/C If R/C operate, Explain the customer cause is interference from light in room.
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Standard Repair Process LCD TV Check input signal Signal input? Established date D. Function error Error symptom External device recognition error Y N Check and fix external device/cable Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes Check technical information - Fix information - S/W Version Technical information? 2012. 12 .
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Standard Repair Process LCD TV Identify noise type Error symptom Established date Circuit noise, mechanical noise Revised date Check location of noise Circuit noise Mechanical noise E. Noise 2012. 12 .06 Replace PSU(with LED driver) OR Replace LED driver Check location of noise OR ※ Mechanical noise is a natural phenomenon, and apply the 1st level description. When the customer does not agree, apply the process by stage.
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Standard Repair Process LCD TV F. Exterior defect Error symptom Zoom part with exterior damage Exterior defect Module damage 2012. 12 .06 Revised date Adjust VCOM ☞A28 Cabinet damage Remote controller damage Stand dent Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Error symptom LCD TV Check Network status Normal Signal? Y N Established date G. Network Error Exterior defect 2012. 12 .06 Revised date Check Wired ethernet cable connection Check whether AP has a probelm or not. Setting  Network  Networ Status Check Network connection Case1 WiFi .
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Standard Repair Process LCD TV Error symptom Exterior defect Established date 2012. 12 .06 Revised date Check defect CI slot pin Check it’s worked CI+ 1.2 or 1.3 Setting  Antenna  CI information Check CI CAM status Read Y Information? G.
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Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from previous page No. Error symptom Content Page 21 Check front display LED A17 22 Check power input Voltage & ST-BY 3.5V A18 Checking method when power is ON A19 POWER BOARD voltage measuring method A5 23 B. Power error_No power 24 Remarks 25 26 B. Power error_Off when on, off while viewing POWER OFF MODE checking method A22 27 B.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/Normal audio Content Check White Balance value Established date Revised date 2012. 12 .06 A4 Entry Entry method method 1. 1. Press Press the the ADJ ADJ button button on on the the remote remote controller controller for for adjustment. adjustment. 2. 2. Enter Enter into into White White Balance Balance of of item item 6. 10. 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_No video/ Audio Content Power Board voltage measuring method Established date Revised date 2012. 12 .06 A5 Check the DC 24V, 12V, 3.5V. 24 Pin (Power Board ↔ Main Board) SMAW200-H24S Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes 1 Power on 2 Inverter On/off 3 3.5V 4 PWM Dim #1 5 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Video error, video lag/stop Content TUNER input signal strength checking method Established date Revised date 2012. 12 .06 A6 MENU  support  signal test  select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual Error symptom LCD TV A. Video error_Video error, video lag/stop LCD-TV Version checking method Content Established date Revised date 2012. 12 .06 A7 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error _Vertical/Horizontal bar, residual image, light spot Content LCD TV connection diagram (1) Established date Revised date 2012. 12 .06 A8 As the part connecting to the external input, check the screen condition by signal Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Video error, video lag/stop Content TUNER checking part Established date Revised date 2012. 12 .06 A9 Checking method: 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom A. Video error_Color error Content Adjustment Test pattern - ADJ Key Established date Revised date 2012. 12 .06 A12 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!) Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange EPI Cable or Main B/D (1) Solder defect, CNT Broken Solder defect, CNT Broken Solder defect, CNT Broken Solder defect, CNT Broken T-Con T-Con Defect, Defect, CNT CNT Broken Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange the Module (1) Panel Mura, Light leakage Crosstalk Panel Mura, Light leakage Press damage Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Appendix : Exchange the Module (2) Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Vertical Line Source TAB IC Defect Horizontal Block Gate TAB IC Defect Gate TAB IC Defect Vertical Block Source TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _No power Content Check front display LED Established date Revised date 2012. 12 .06 A17 You can set the LG Logo Light to on or off by selecting OPTION in the main menus.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _No power Content Check power input voltage and ST-BY 3.5V Established date Revised date 2012. 12 .06 A18 For ’10 models, there is no voltage out for st-by purpose. When st-by, only 3.5V is normally on. Check the DC 24V, 12V, 3.5V. 24 Pin (Power Board ↔ Main Board) SMAW200-H24S Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes 1 Power on 2 Inverter On/off 3 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _No power Content Checking method when power is ON Established date Revised date 2012. 12 .06 A19 Check “power on” pin is high 24 Pin (Power Board ↔ Main Board) SMAW200-H24S Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes 1 Power on 2 Inverter On/off 3 3.5V 4 PWM Dim #1 5 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom B. Power error _Off when on, off whiling viewing Content POWER OFF MODE checking method Established date Revised date 2012. 12 .06 A22 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual Error symptom LCD TV Content C. Audio error_No audio/Normal video Checking method in menu when there is no audio Established date Revised date 2012. 12 .06 A24 Checking method 1. Press the MENU button on the remote controller 2. Select the SOUND function of the Menu 3. Change TV Sound Out to TV Speaker Copyright © 2013 LG Electronics. Inc. All rights reserved.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom C. Audio error_No audio/Normal video Content Voltage and speaker checking method when there is no audio Established date Revised date 2012. 12 .06 A25 24 Pin (Power Board ↔ Main Board) ① SMAW200-H24S ② 1 Power on 2 Inverter On/off 3 3.5V 4 PWM Dim #1 5 3.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom D. Function error_ No response in remote controller, key error Content Remote controller operation checking method Established date Revised date 2012. 12 .06 A27 P4101 ③ ④ 1 2 3 4 5 6 7 8 GND KEY1 KEY2 +3.5V_ST GND LOGO/LED_R IR GND ② ① Checking order 1, 2. Check IR cable condition between IR & Main board. 3. Check the st-by 3.5V on the terminal 4. 4.
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Standard Repair Process Detail Technical Manual LCD TV Error symptom D. VCOM Adjustment Content Sequence of the Vcom adjustment Established date Revised date 2012. 12 .06 A28 1. Case ■ LCD module change ■ T-Con board change 2. Equipment ■ Service Remote controller 3. Adjust sequence ■ Press the ‘adj’ key ■ select V-COM ■ As pushing the right or the left button on the remote controller, And find the V-COM value Which is no or minimized the Flicker.