Instruction/ maintenance manual of the product 55LA790V/W/9-ZA LG Electronics
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Printed in Korea P/NO : MFL67733208 (1304-REV00) CHASSIS : LD34D MODEL: 55LA790V/W/9 55LA790V/W/9-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.
- 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS .
- 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 .
- 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.
- 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.
- 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 LD34D chassis.
- 7 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) P AL-BG/DK/I/I’ 2) .
- 8 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. External input format 5.1. 2D Mode (1) Component input(Y , CB/PB, CR/PR) (2) HDMI Input (PC/DTV) No. Resolution H-freq(kHz) V -freq(Hz) 1.
- 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.2 . 3D Mode (1) RF Input(3D supported mode manually) No. Resolution Proposed 3D input proposed mode 1 HD - DTV 1080I 720P 2D to 3D Side by Side(Half) T op & Bottom 2 SD - DTV 576P 576I 3 SD - A TV(CVBS/SCART) (3) HDMI 1.
- 10 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes (4) HDMI 1.4b (3D supported mode automatically) No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed 1 640*480 31.
- 1 1 - 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) 3D input proposed mode Proposed 1 1024*768 48.36 60 65 2D to 3D, Side by Side(half) T op & Bottom HDTV 768P 2 1360*768 47.
- 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.
- 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 LD34D chassis.
- 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.3. LAN Inspection 3.3.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig 3.
- 15 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes * Manual Download (Model Name and Serial Number) If the TV set is downloaded by OT A or service man, sometimes model name or serial number is initialized.
- 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4. Manual Adjustment * ADC adjustment is not needed because of OTP(Auto ADC adjustment) 4.1. ED I D ( T h e E x t e n de d D i s p l a y I d e nt i f i c a t i o n Data)/DDC(Display Data Channel) download 4.
- 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes # HDMI 3(C/S : E8 61) EDID Block 0, Bytes 0-127 [00H-7FH] EDID Block 1, Bytes 128-255 [80H-FFH] # HDMI 4(C/S : E8 51) EDID Block 0, Bytes 0-127 [00H-7FH] EDID Block 1, Bytes 128-255 [80H-FFH] 4.
- 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ▪ Adj. Map 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 .
- 19 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ▪ Standard color coordinate and temperature using CA-210(CH 18) 4.2.7. EDGE LED White balance table (1) EDGE LED module change color coordinate because of aging time.
- 20 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.6. Wi-Fi T est Step 1) T urn on TV Step 2) Select Network Connection option in Network Menu. Step 3) Select Start Connection button in Network Connection.
- 21 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.1 1. T ool Option selection - Method: Press ADJ key on the Adj.
- 22 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes A22 A10 A T1 AG1 910 900 200 Assembly 310 400 410 540 530 120 560 570 580 501.
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.
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.
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.
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.
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.
THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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1 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 2013 LED/LCD TV Engineering guide < A pplicable Model : High -end P.
2 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only EPI In terface EPI(Embedd ed Point-Poin t Interface) Features • Point-Point topology (support 2 Pair o ption) • CDR (C lock Data Recovery ) • Bandwidth up to 1.
3 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only EPI In terface (mini-L VDS v s.
4 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only HF mini-L VDS EPI T opology Protocol Features @10bit, FHD120 • Multi Drop • Data rate: 660 Mbps • External clock • Point to Point • Data rate : 1.
5 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only NFC (Near field communi cation) Near field communic ation (NFC) is a s.
6 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only LINE OUT Headphone External Speaker 2CH stereo Line out is used w hen y ou w ant to send the TV audio signal to a n external dev ice.
7 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Main PCB for Broadband Main + TC ON all in one T o PSU 2 6 4 1 M ain p.
8 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 16 DDR3 16 1. H13 Block Diagram (External) DAC_DA T A HSR_P/M AA D_DATA CVBS BB_TP_DATA AUD Tuner PC_AUDI O PC_Au dio_L /R AV1_A udio L/R AV1 COMP1 AV1_CVBS Comp1 Y,P b,Pr HDMI Switch HDMI2 HDMI3 H13 LG1154A N USB1(USB3.
9 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only IC3201 SII9587CNUC HDMI_SW IC7700 TPS65178RSLR EPI AR15 [SCL0/GPIO66] AP15 [SDA0/GPIO65] I2C_SDA1 IC5600 TAS5733 AMP MAIN 24 [SCL] 23 [SDA] IC5700 TAS5733 AMP WOOFER 33 Ω 33 Ω IC3000 R5F100GEAF B RENESAS MICOM 3.
10 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1.0V Core 3A 1.8V_TU 5V Normal 5A 1.5V DDR 3A IR A ss ’ y MICOM Ethernet PHY Wi - Fi A ss’y Logo Light A ss’y H13-D (VDDC) DDR (VDDQ) DDR (VDD) 3.
11 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only LG1 154 TDSQ- G651D [RESET] 2 AG6[GPIO10] AH34 [SCL5] AH33 [SDA5] [SLC] 3 [SDA] 4 [+3.
12 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only COMP1_PR_IN_SOC COMP1_Y_IN_SOC COMP1_PB_IN_SOC COMP1_Y_IN_SOC_SOY 5.
13 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 6. AUDIO OUT SPDIF_OUT TAS5733 AZ4580MTR OP A MP Mute CTRL [TR] LPF C.
14 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only HDMI Switch (IC3201 / SII9587CNUC) HDMI1 HDMI_HPD_ 1 ~ 4 5V_HD MI_1 ~.
15 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only (EPI CH1 ± ) (EPI CH3 ± ) TX0P/N TX2P/N (EPI CH2 ± ) TX1P/N EPI 50.
16 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only PMIC TPS65178 Boost Converter Buck 1 converter(VCC) Buck 2 converter(.
17 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 10. USB / WIFI / M-REMOTE / UART LG1154D_H13D USB1(3.
18 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Interconnection - 1 1 Main PCB 2 Power Board 3 Local key A ssy 1 2 3 .
19 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 8 7 Interconnection - 2 IR to Local Key 3Pin Cable IR to Logo A ssy 4.
20 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Introductions of 13Y RF ass’y + Magic Remote control 1. Syste m 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5.
21 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. System Remote RF Receiver TV UA RT or U SB RF Pairing Information T ransmission (Sen d to TV after Paired) • Static Calibration Data (Bypass only) • Remote FW v er .
22 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 2. Remote Button s (M4 vs.
23 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 3. MR13P Block Diagram MPU-6150 (Gyr o+ACC) (Invensense) BCM20733M A2 (BROADCOM ) Bluetooth 3.0 Key Button ( 4 x 4 ) AA x 2 Battery DC -DC Boost TI TPS61097 SOT23-5 Power Management Antenna Partr on X-tal 24 MHz 2.
24 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 주요 Item IC Manufacturer Function Remocon V oice V oice Codec WM8950 Wolfson 16KHz Sampling of A ud io data MEMS Mic.
25 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 5. RF Pairi ng / Un-pairing Method Method Description RF Pairing Method1 – If unpaired, just press "OK" button.
26 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. Wi - Fi built in A ss’y feature 2.
27 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only WIFI Built in ass’y feature PIN USB i nterface 1 Vcc 2 DM 3 DP 4 GND 5 WOW 6 NC - Pin map BCM43236B Wafer 6pin 1.25mm 3.
28 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only WIFI Built in ass’y Specification.
29 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 표지 W idevine & HDCP 2. 0 & NETFLX 2012. 12. 08 Contents 1. Widev ine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4.
30 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. Widev ine? [Widev ine] Widev ine is the Solution(Library) offering A daptive Streaming and DRM. In BBTV , w hen special CP do service, this module is required key .
31 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only HDCP High-bandwidth Digital Content Protection Protect hi.
32 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 3. DTCP? [DTCP] The Digital T ransmission Content Protection Specific.
33 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 4. Changed BOM Changed Item : Separate HD CP check box .
34 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A.
35 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process Detail T echnical Manual No.
36 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process Detail T echnical Manual N o. Error sympt om Conte nt Page Remark s 21 B. Power error_No power Check front display LED A17 22 Check power in put Voltage & ST -BY 3.
37 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On w ith n aked eye On Y N Check Power Board 12v,3.
38 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Normal voltage? Check v ariou s 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 .
39 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A . Picture Problem Picture broken/ Freezing Y N ☞ A6 N Check RF Signal level Normal Signal? Check RF Cable Connection 1.
40 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A . Picture Problem (DVB-S/S2) Tuning fail, Picture broken/ Freezing .
41 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Color error? Y N Check and replace Link Cable (EPI) and contact condi.
42 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Screen normal? N Y Check ex ternal device connecti on conditio n Y N .
43 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only B. Po w er error No power Power LED On? Y N DC Power on by pressing P.
44 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only B. Power error Off when on, off while viewing, power auto on/off Erro.
45 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only No audio Screen normal Check user menu > Speaker off Off N Y Cance.
46 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only → abnormal audio/discontinuation/noise is same after “Check input signal” compare d to No audio C.
47 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only D. Gen eral Fun ction Problem Remote control & Local sw itch checking Y N 1.
48 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Check technical inform ation - Fix information - S/W Version N Y Tech.
49 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Check locati on of noi se Identify noise ty pe Circuit noise Replace .
50 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Replace module Zoom p art with exterior damage Module damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F .
51 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only G. Netw ork Error Exterior defect Established date Revised date LCD TV Error symptom Standard R epair Process 2012. 12 .
52 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only G. CI+ Competibility Error Exterior defect Established date Revised date LCD TV Error symptom Standard Repair Process 2012.
53 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Established date Standard Repair Process Detail T echnical Manual Revised date A1 Error symptom Content Ch eck LCD back light with naked ey e A .
54 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Entry me thod 1. Press the ADJ button on the remote controller for adjustme nt. 2. Enter into Wh ite Balance of item 6. 3.
55 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Power Board voltage measuring method A . Video error_No v ideo/ Au dio A5 Established date Revised date Error symptom Content LCD TV Check the DC 24V , 12V , 3.
56 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only MENU support signal test select channel W hen the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.
57 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual LCD-TV Version checking method A . Video error_Video error , video lag/s top 1.
58 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual LCD TV connection diagram (1) A .
59 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking method: 1. Check the signal strength or check w hether the screen is normal w hen the external dev ice is connected.
60 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual A djustment T est pattern - ADJ Key A . Video error_Color error Y ou can view 6 ty pes o f patterns using the ADJ Ke y Checking item : 1.
61 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Solder def ect, CNT Broken T -Con Defect, CNT Broken T -Con Defect, C.
62 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Abnormal Power Section Solder def ect, Short/Crack Abnormal Power Sec.
63 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A ppendix : Exchange LPB(LED driv er) No Lig ht Dim Lig ht Dim Lig ht.
64 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A ppendix : Exchange the Modul e (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 please exchange the module.
65 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only V ertical Block Source T AB IC Defect Horizontal Block Gate T AB IC D.
66 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Check front display LED B.
67 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 24 Pin (Power Board ↔ Main Board) SMAW200 - H24S 1 Power on 2 In verter On/o ff 3 3.
68 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Checking method when power is ON B. Po w er error _No pow er A 19 Established date Revised date Error symptom Content LCD TV Check “power on” pin is high 2012.
69 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Entry method 1. Press the IN-ST AR T button 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.
70 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking method 1. Press the M ENU butto n on the remote controller 2.
71 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 24 Pin (Powe r Boar d ↔ Main Bo ard) SMAW200 - H24S 1 Power on 2 I nverter On /off 3 3.
72 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking order 1, 2. Check IR cable condition betw een IR & Main board. 3. Check the st-by 3.5V on the terminal 4. 4.
73 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Sequence of the Vcom adjustment D. VC OM A djustment 1. Case ■ LCD module change ■ T -Con board change 2.
An important point after buying a device LG Electronics 55LA790V/W/9-ZA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought LG Electronics 55LA790V/W/9-ZA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data LG Electronics 55LA790V/W/9-ZA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, LG Electronics 55LA790V/W/9-ZA you will learn all the available features of the product, as well as information on its operation. The information that you get LG Electronics 55LA790V/W/9-ZA will certainly help you make a decision on the purchase.
If you already are a holder of LG Electronics 55LA790V/W/9-ZA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime LG Electronics 55LA790V/W/9-ZA.
However, one of the most important roles played by the user manual is to help in solving problems with LG Electronics 55LA790V/W/9-ZA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device LG Electronics 55LA790V/W/9-ZA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
