Page 2 - CONTENTS
- 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ................................................
Page 3 - General Guidance; isolation Transformer should always be used; Before returning the receiver to the customer,; AC leakage current check; Leakage Current Cold Check(Antenna Cold Check); Do not use a line Isolation Transformer during this check.; Leakage Current Hot Check circuit; IMPORTANT SAFETY NOTICE; 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. It is e...
Page 4 - SERVICING PRECAUTIONS; CAUTION
- 4 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 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 ...
Page 5 - IC Remove/Replacement; Removal; Circuit Board Foil Repair; At IC Connections
- 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 flat against the cir- cuit foil. When holes are...
Page 6 - SPECIFICATION; Requirement for Test; Supported satellite : 22 satellites
- 6 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 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 LD3AF ch...
Page 9 - DTV
- 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.3. HDMI Input(PC/DTV) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark PC(DVI) DDC 1 640*350 31.468 70.09 25.17 EGA X 2 720*400 31.469 70.08 28.32 DOS O 3...
Page 10 - ADJUSTMENT INSTRUCTION; Main PCB check process
- 10 - 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 LD3AF chassis. 2. Designation (1) The adjustment is according to the ord...
Page 11 - Total Assembly line process
- 11 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.1. ADC Process (1) ADC - Enter Service Mode by pushing "ADJ" key, - Enter Internal ADC mode by pushing "►" key at "8. ADC Calibration". <Caution> ...
Page 15 - (4) Check whether the key was downloaded or not at ‘In Start’; Commercial Feature inspection; Welcome Screen Function check
- 15 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 6. CI+ Key Download method 6.1. Download Procedure (1) Press "Power on" key of a service Remote control. (Baud rate : 115200 bps) (2) Connect RS232-C Signal Cable. (3) Wr...
Page 16 - ● CASE 1. Clock LED Model; If the clock LED of TV 2 is on and TV 1, 2 had a same TV
- 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes (8) Check displayed image status(color, size) when TV is turning on. <Image for test- 720x576> Please use this image for test. (9) Try this inspection with various resoluti...
Page 17 - ● CASE 2. No Clock LED Model; Check Commercial features concerning
- 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ● CASE 2. No Clock LED Model If the auto volume of TV 2 is on and TV 1, 2 had a same TV channels → USB cloning is success!! 8.4. Check Commercial features concerning Output.(IR O...
Page 18 - ▪ Power only mode
- 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 8.4.3. External Clock < Equipment & Condition > ▪ Simple Jig (External Clock Assy) ▪ Power only mode (1) Connect external Clock Assy to CLOCK INTERFACE. (2) Check the L...
Page 19 - TROUBLESHOOTING GUIDE; Check the booting Voltage
- 19 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes TROUBLESHOOTING GUIDE 1. Check the booting Voltage Make sure the Stand-by Voltage. P401 3, 5pin : +3.5V_ST Make sure the Micom voltage. L301 : +3.5V_ST Make sure the output of MS...
Page 23 - Audio of All input
- 23 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 7. Audio of All input Check the Mstar Audio_Master_CLK signal. R148 Check the Audio output signal. IC501 1, 2, 3, 4pin Check the AMP I2C Line. R140, R141 Check the connector P501...
Page 25 - NEC; BLOCK DIAGRAM
- 25 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes S7LR2 (LGE2111A-T8) Analog CI FE_TS_Paralle l CI AMP Speaker DDR3 2Gb x 1 EXT Speaker Digital Tuner DV B -T/ C DV B -T2/ C DV B -T/C/S2 DDR3 1Gb x 1 NAND Flash 2G b SCAR T COMP (...
Page 26 - EXPLODED VIEW
- 26 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 900 200 400 540 521 530 500 301 910 120 300 510 123 122 LV 1 A2 A10 * Set + Stand * Stand Base + Body EXPLODED VIEW Many electrical and mechanical parts in this chassis have spec...
Page 27 - S 7 L R c o r e 1 . 2 V v o l t; EMEA INTERACTIVE
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 0 . 1 u F C...
Page 28 - C l o s e t o T U N E R
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 0 . 1 u F16...
Page 29 - N o r m a l 2 . 5 V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. D1-_HDMI2 0...
Page 31 - C h a n g e i n S 7 L R
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RXA1+ RXA1-...
Page 33 - SPDIF OPTIC JACK
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 1 0 0 p F50...
Page 35 - F u l l S c a r t / C o m p 1; REAR COMPONENT PHONE JACK
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SC1/COMP1_L...
Page 37 - * O p t i o n n a m e o f t h i s p a g e : C I _ S L O T
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 0 . 1 u F16...
Page 38 - ETHERNET; LAN
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. EPHY_RN EPH...
Page 40 - CONTROL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BLM18PG121S...
Page 41 - F o r C E C
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 2 . 7 K R88...
Page 44 - D V B - S 2 L N B P a r t A l l e g r o
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 4 . 7 K LNB...