LG Electronics 42LN549E-ZA, 42LP630H, 42LP630H/631H, 42LP630H/631H-ZA, 42LP631H-ZA

Only for training and service purposes

CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ........................................................................ 3

SERVICING PRECAUTIONS ................................................................... 4

SPECIFICATION ...................................................................................... 6

ADJUSTMENT INSTRUCTION ............................................................. 10

TROUBLESHOOTING GUIDE ................................................................ 19

BLOCK DIAGRAM ................................................................................. 25

EXPLODED VIEW .................................................................................. 26

SCHEMATIC CIRCUIT DIAGRAM ..............................................................

Contents

Main Page SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) SERVICING PRECAUTIONS Page SPECIFICATION 1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification Page 5. Supported video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR) 5.3. RGB Input (PC) - FHD Model 5.2. RGB Input (PC) - HD Model 5.3. HDMI Input(PC/DTV) ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Main PCB check process * Boot file Download 4. Total Assembly line process 4.1. Adjustment Preparation * Auto-control interface and directions * Manual W/B process using adjust Remote control. 4.2. DPM operation confirmation (Only Apply for MNT Model) 4.3. DDC EDID Write (RGB 128Byte ) 4.4. DDC EDID Write (HDMI 256Byte) 4.5. EDID data 4.5.1. Auto Download 4.5.2. Manual Download 4.6. Outgoing condition Configuration 4.7. HI-POT Test 4.7.1. HI-POT auto-check preparation 4.7.2. HI-POT auto-check 5. Model name & Serial number D/L 5.1. Signal Table 5.2. Comand Set 5.3. Method & notice 6. CI+ Key Download method 6.1. Download Procedure 8. Commercial Feature inspection 8.1. LG Logo inspection 8.2 Welcome Screen Function check 8.3. USB Cloning Function check CASE 1. Clock LED Model CASE 2. No Clock LED Model 8.4. Check Commercial features concerning Output.(IR Out/SPK Out/External Clock) 8.4.1. External SPK Out and Volume control 8.4.2. IR Out Page TROUBLESHOOTING GUIDE 1. Check the booting Voltage 2. Digital TV Video 3. Analog TV Video 4. Component Video 5. RGB Video (LN549E Only) 6. HDMI Video 7. Audio of All input 8. TV Audio 9. AUDIO IN (Component/DVI Audio) (PC Audio:LN549E Only) BLOCK DIAGRAM S7LR2 (LGE2111A-T8) NEC Micom CI EXPLODED VIEW +3.3V_Normal FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 4 AP7173-SPG-13 HF(DIODES) 1.5A P4R_GLOBAL_TUNER_BLOCK ERROR & VALID PIN Close to TUNER close to TUNER VREF=1.25V FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LGE2112-T8 * Dual Stream is only Korea 3D spec 2 EXTERNAL SPEAKER OUT NTP-7500L IC501 5 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS EMEA INTERACTIVE AUDIO AMP FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS [51Pin LVDS Connector] (For FHD 60/120Hz) [30Pin LVDS Connector] (For HD 60Hz_Normal) 7 EMEA INTERACTIVE LVDS WAFER Pol-change FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS RS232C_9PIN RS232C EMEA INTERACTIVE 10 RGB/SPDIF/PC/HP/USB EARPHONE BLOCK EMEA INTERACTIVE USB2_DIODES FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC1300 IC1300-*1 W25Q80BVSSIG MX25L8006EM2I-12G Full Scart/ Comp1 EMEA INTERACTIVE REAR COMPONENT PHONE JACK FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC1700 UART/I2C SWITCH MSTAR ADJ MSTAR DEBUG EXT_SPK_CONTROL/DEBUG EXT_SPK OUT * Option name of this page : CI_SLOT CI Region (because of Hong Kong) CLOSE TO MSTAR EMEA INTERACTIVE PCMCI 19 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ETHERNET LAN 21 * H/W option : ETHERNET FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS +5V_ST REAL TIME CLOCK(RTC) 3 Step Up regulator from 3.5V to 5V IC301 UPD78F1164GF(S) NEC_MICOM IR & LED FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 6 CONTROL EMEA INTERACTIVE IR/CONTROL FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS HDMI_1 HDMI 8 HDMI_2 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LGE2112-T8 H5TQ1G63DFR-H9C S7LR_DIVX_MS10 IC1201 LGE2112-T8 22 PM MODEL OPTION I2C Internal demod out LGE2112-T8 AR102 AT24C256C-SSHL-T 22 AR101 IC104 DVB-S2 LNB Part Allegro PCB_GND and A_GND are connected DCDC_GND and A_GND are connected in pin#27 Input trace widths should be sized to conduct at least 3A DCDC_GND and A_GND are connected

LG Electronics service manual - page 2

Models: 42LN549E-ZA 42LP630H 42LP630H/631H 42LP630H/631H-ZA 42LP631H-ZA