Service manual

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Printed in KoreaP/NO : MFL68026206 (1402-REV00)

CHASSIS : LA46B

MODEL : 39LB5800 39LB5800-UG

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

LED TV

SERVICE MANUAL

Summary of content (42 pages)

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LED TV SERVICE MANUAL CHASSIS : LA46B MODEL : 39LB5800 39LB5800-UG CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Recommended Troubleshooting & Repairing Guide: V3.0 –LED & LCD TV Repair Tips ebook V2.0- LCD TV Repair Tips & Case Histories “More information on T-con Board & Mainboard Secret Repair Tips!” V1.
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CONTENTS CONTENTS . ............................................................................................. 2 PRODUCT SAFETY ................................................................................. 3 SPECIFICATION........................................................................................ 4 ADJUSTMENT INSTRUCTION................................................................. 9 BLOCK DIAGRAM...................................................................................
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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. 3. Solder the connections.
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SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 1.1. This spec sheet is applied all of the 32”, 39”, 42”, 47”, 50”, 55”, 60, 65” LED TV with LA46B chassis. 1.2. Not included spec and each product spec in this spec sheet apply correspondingly to the following each country standard and requirement of Buyer 2. Test condition Each part is tested as below without special notice.
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4. General Specification No Item Specification Remark 1 Market 1) North America 2 Television System NTSC-M, ATSC, 64 & 256 QAM 3 Input Voltage AC 100 ~ 240V 50/60Hz 4 Available Channel 1) VHF : 02~13 2) UHF : 14~69 3) DTV : 02-69 4) CATV : 01~135 5) CADTV : 01~135 5 Aspect Ratio 16:9 6 Tuning System FS 7 LCD Module LC550DUE-FGA3 LGD 55LB5800-UA T500HVF05.
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5. Supported video resolutions 5.1. Component 2D input(Y, CB/PB, CR/PR) No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 1. 720*480 15.73 60 13.5135 SDTV ,DVD 480I 2. 720*480 15.73 59.94 13.5 SDTV ,DVD 480I 3. 720*480 31.50 60 27.027 SDTV 480P 4. 720*480 31.47 59.94 27.0 SDTV 480P 5. 1280*720 45.00 60.00 74.25 HDTV 720P 6. 1280*720 44.96 59.94 74.176 HDTV 720P 7. 1920*1080 33.75 60.00 74.25 HDTV 1080I 8. 1920*1080 33.72 59.94 74.
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ADJUSTMENT INSTRUCTION 1. Application This spec. sheet applies to LA46B Chassis applied LED TV all models manufactured in TV factory 2. Specification (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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4.3. LAN port Inspection (Ping Test) 4.4.3. EDID DATA 4.4.3.1. . 2D_8bit_PCM(US) _ xvYCC : off (HD) HDMI EDID 2D_8bit_PCM(US)_xvYCC : off (HD) 4.3.1. Equipment setting 1) Play the LAN Port Test PROGRAM. 2) Input IP set up for an inspection to Test Program. - IP number: 12.12.2.2 4.3.2. LAN PORT inspection (PING TEST) 1) Play the LAN Port Test Program. 2) Connect each other LAN Port Jack. 3) Play Test (F9) button and confirm OK Message.
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4.4.3.2. 2D_8bit_PCM(US) _ xvYCC : off HDMI EDID 2D_8bit_PCM(US)_xvYCC : off 4.4.3.3. 2D_10bit_PCM(US) _ xvYCC : off HDMI EDID 2D_10bit_PCM(US)_xvYCC : off ▪Reference - HDMI1 ~ HDMI3 - In the data of EDID, bellows may be different by S/W or Input mode. ▪Reference - HDMI1 ~ HDMI3 - In the data of EDID, bellows may be different by S/W or Input mode.
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5. Final Assembly Adjustment 5.1.4. Adjustment Command (Protocol) (1) RS-232C Command used during auto-adj. 5.1. White Balance Adjustment RS-232C COMMAND 5.1.1. Overview 5.1.1.1. W/B adj. Objective & How-it-works (1) Objective: To reduce each Panel’s W/B deviation (2) How-it-works: When R/G/B gain in the OSD is at 192, it means the panel is at its Full Dynamic Range.
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5.1.5.2. Manual adjustment (1) Set TV in Adj. mode using POWER ON (2) Z ero Calibrate the probe of Color Analyzer, then place it on the center of LCD module within 10cm of the surface.. (3) P ress ADJ key -> EZ adjust using adj. R/C à 9. WhiteBalance then press the cursor to the right (KEY►). When KEY(►) is pressed 206 Gray internal pattern will be displayed. (4) Adjust Cool modes (i) F ix the one of R/G/B gain to 192 (default data) and decrease the others.
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5.2. Tool Option setting & Inspection per countries 5.3. Magic Motion remote controller Check 5.3.1. Test equipment ▪ R F-remote controller for check, IR-KEY-CODE remote controller. ▪ Check AA battery before test. A recommendation is that a tester change battery every lots. 5.2.1. Overview (1) Tool option selection is only done for models in Non-USA North America due to rating (2) Applied model: LA46B Chassis applied to CANADA and MEXICO 5.3.2.
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5.5. HDMI ARC Function Inspection 5.6. HDMI MHL Function Inspection 5.5.1. Test equipment 5.6.1. Test method - Optic Receiver Speaker - MSHG-600 (SW: 1220 ↑) - HDMI Cable (for 1.4 version) (1) Insert the HDMI Cable to the HDMI MHL port from the master equipment, HDMI3 (2) Check the Green LED of Tester, and TV Display 5.5.2. Test method (1) Insert the HDMI Cable to the HDMI ARC port from the master equipment (HDMI1) 5.7. EYE-Q Green Function Inspection Step 1) Turn on the TV..
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6. AUDIO output check 6.1. Audio input condition (1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal (0.4Vrms) (3) RGB PC: 1KHz sine wave signal (0.7Vrms) 8. USB S/W Download (optional, Service only) 6.2. Specification No Item Min Typ Max Unit Remark 1 Audio practical max Output, L/R (Distortion=10% max Output) 9.0 8.5 10.0 8.9 12.0 9.
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9. Optional adjustments 9.1. Manual White balance Adjustment 9.1.1. Adj. condition and cautionary items (1) Lighting condition in surrounding area surrounding lighting should be lower 10 lux. Try to isolate adj. area into dark surrounding. (2) Probe location: Color Analyzer (CA-210) probe should be within 10cm and perpendicular of the module surface (80°~ 100°) (3) Aging time i) After Aging Start, Keep the Power ON status during 5 Minutes.
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Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes LVDS Diagram MHL 1A SIL1392 MHL : I2C 4 R E A R (H) Air/ Cable MHL 사용시 DVB-S : I2C 4 TUNER (T/C/A) LNB T/C/S2 Without ATV R E A R S I D E S I D E - 18 ETHERNET LAN CVBS/YPbPr HDMI MUX USB T/C Demod Analog Demod P_TS SPDIF OUT AMP TI OCP 1A OCP 2.
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EXPLODED VIEW IMPORTANT SAFETY NOTICE * Set + Stand A2 200 A10 A3 120 LV1 410 530 540 521 121 310 400 900 Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
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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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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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SPDIF THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right 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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+3.5V_ST_WAKE +3.5V_ST L4111 BLM18PG121SN1D MAX 0.4A WIFI R4117 10K 5% R4118 10K 5% C4113 R4113 100 10uF 10V WIFI P4101 P4102 KEY1 12507WR-08L 12507WR-10L 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 L4100 BLM18PG121SN1D C4104 1000pF 50V R4125 LED_R GND For EMI 1 2 12507WR-06L 3 10K +3.
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DEBUG FOR INTERNAL AMOD. OPT R3801 0 DTV/MNT_V_OUT_SOC R3800 75 1% TU_DEBUG For TU_Debug Disconnet R374 ZD3804 ADUC 5S 02 0R5L AV/COMPONENT REAR NON_Mold_AV Mold_AV PPJ245N2-01 JK3800-*1 PPJ245-01 JK3800 7A 7A [GN/YL]E-LUG 6A UART_4PIN_STRAIGHT 6A P3800 +3.
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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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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 1% HP_OUT_H13 R6103-*1 43K 14 HP_OUT HP_OUT -INR HP_ROUT_MAIN R6103 33K HP_OUT_MTK 1 C6108 10pF 50V OUTR 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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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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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. FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
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M13 EAX64872104 BASE 14y Smart TV M13 PCB P/NO EAX64797001* : LD33B EAX64872101* : LA33B NVRAM E0 E1 E2 R101 4.7K R102 4.7K OPT R100 IC100 AT24C256C-SSHL-T VSS 8 2 7 3 6 4 5 X-TAL NC4.5 PCB P/NO NON CI : EAX65610201 CI : VCC WC SCL SDA X100 27MHz X-TAL_1 EAX6561090X_1pF C114 1.0pF 50V GND_2 1 4 2 3 GND_1 X-TAL_2 MT5398_XTAL_OUT C115 1.0pF EAX6561090X_1pF 50V EMMC_CLK R168 10K NVRAM_ST A0 4.7K OPT +3.3V_NORMAL 1 C114-*1 C115-*1 2.7pF 2.7pF 50V 50V EAX6561020X_2.
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PLACE AT JACK SIDE Close to JACK Close to Main Chip C345 10uF 16V +5V_NORMAL 1608 sizs For EMI 1.0Vpp COMP1/AV1/DVI_L_IN_SOC C311 1uF R303 82 ZD302 ADLC 5S 02 015 C338 560pF 50V OPT 10V R302 180 0 COMP1_Y/AV1_CVBS R374 COMP1_Y/AV1_CVBS_SOC 30K R328 470K OPT ARC 1608 sizs For EMI R344 COMP1/AV1/DVI_L_IN R308 1.
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FROM LPB & PSU C2401 0.1uF 50V L/DIM0_MOSI_PWR 8 PDIM#2 24V 9 10 24V GND 11 12 GND 12V 13 14 12V 12V 15 16 NC GND 17 18 GND GND 19 20 GND 22 L/DIMO_VS 24 L/DIM0_SCLK GND 21 L/DIM0_MOSI 23 19 PWM_DIM2 L/DIM0_MOSI OPT C2413 0.1uF 50V D S C2440 1uF 25V OPT L/DIM0_MOSI_PWR L/DIM_OUT R2456 33 C2458 10uF 35V G C2435 4.7uF 50V VDD3V3_HDMI L/DIM0_VS L/DIM0_VS_PWR L/DIM0_VS_PWR R2441 5.
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Renesas MICOM For Debug For CEC +3.5V_ST 4.
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D1D1-_HDMI4_JACK D1_GND 15 14 D1+_HDMI4_JACK 13 E MMBT3906(NXP) Q3302 R3375 10K D1+ 12 B D2- C R3373 1K 11 C 10 B 9 MHL_DET Q3301 C3322 0.
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RS-232C Control INTERFACE(NORTH AMERICA) JK3700 PEJ034-01 100 R3720 RS232C_US 100 R3721 RS232C_US Closed to Jack HP_LOUT OPT ZD3702 ADUC 20S 02 010L 20V RS232C_US C3713 0.1uF IC3700 OPT ZD3703 ADUC 20S 02 010L 20V C1+ C3708 0.1uF V+ C3709 0.1uF C1- RS232C_US C2+ RS232C_US C3710 0.1uF C2- V- RS232C_US C3711 0.1uF DOUT2 RIN2 R_SPRING 4 T_SPRING 5 B_TERMINAL2 7B T_TERMINAL2 6B +3.3V_NORMAL R3706 MAX3232CDR RS232C_US 3 HP_ROUT +3.
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+3.3V_NORMAL USB1 OCP USB1 DVR Ready MAX 1.5A +5V_USB_1 R4500 10K OPT R4501 10K IC4500 AP2171DM8G +5V_USB_1 3AU04S-305-ZC-(LG) JK4500 +5V_NORMAL EN /USB_OCD1 3 6 4 5 1 USB_Serial_2.2ohm R4502 2.2 OUT_2 2 7 USB_DM1 USB_Serial_2.2ohm R4503 2.2 C4501 OUT_1 3 IN_2 2 NC USB_DP1 10uF 10V FLG C4502 10uF 10V USB_Serial_0ohm USB DOWN STREAM C4500 0.1uF 16V 8 R4502-*1 0 USB_Serial_0ohm R4503-*1 0 4 IN_1 1 5 GND USB_CTL1 +5V_USB_2 OCP USB2/3 +3.3V_NORMAL USB2 MAX 1.
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Ethernet Block C5000 0.1uF 16V MOLD_LAN_JACK METAL_LAN_JACK JK5000-*1 JK5000 RV3-2032ADA3 RJ45VT-01SN002 1 2 3 4 5 6 7 8 C5001 0.01uF 50V TD+ 1 TCT 2 TD3 RD+ 4 RCT 5 RD6 R7 7 GND 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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DEV_TU_KR_US DEV_TU_BR 1 2 3 4 5 6 7 8 9 B1[+3.3V] TU6402-*4 TDJM-C301D B1[+3.3V] B1[+3.3V] B1[+3.3V] B1[+3.
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/TU_RESET2 /TU_RESET2_TU FE_DEMOD1_TS_ERROR 1. should be guarded by ground 2. No via on both of them 3. Signal Width >= 12mils Signal to Signal Width = 12mils Ground Width >= 24mils close to Tuner +3.3V_TUNER L6500 BLM18PG121SN1D 1 +3.3V_LNA_TU 2 RF_SWITCH_CTL_TU close to TUNER C6501 0.1uF R6507 1K Global flag RF_SWITCH_CTL R6503 10K R6506 IF_AGC_TU 100 IF_AGC close to Tuner mA(MAX) R6511 I2C_SDA6_TU C6503 47pF 50V OPT C6505 47pF 50V OPT 33 I2C_SCL6 R6512 33 +3.
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LVDS_HD LVDS LVDS_51PIN P7100 FI-RE51S-HF-J-R1500 [51Pin LVDS OUTPUT Connector] [41Pin LVDS OUTPUT Connector] [30Pin HD 60Hz] Pin Assign is same as LN570B LVDS Cable (EAD62296501) HD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 NC NC P7102 2D/3D_CTL R7100 33 LGD_2D/3D_CTRL T-CON Pin Assign LVDS_SEL 10031HR-30 NC NC NC AUO_65_MIRROR R7105 33 CP_BOX R7106 33 CP_BOX 0 NC NC L/DIM_ENABLE GND I2C_S
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