LG Electronics 42LN549E-ZA manuals
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When we buy new device such as LG Electronics 42LN549E-ZA we often through away most of the documentation but the warranty.
Very often issues with LG Electronics 42LN549E-ZA begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Flat Panel Television LG Electronics 42LN549E-ZA is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Flat Panel Television on our side using links below.
LG Electronics 42LN549E-ZA Service Manual
45 pages 8.56 Mb
3 SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICEGeneral GuidanceBefore returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) Leakage Current Hot Check (See below Figure) Leakage Current Hot Check circuit 4 SERVICING PRECAUTIONS6 SPECIFICATION10 ADJUSTMENT INSTRUCTION19 TROUBLESHOOTING GUIDE25 BLOCK DIAGRAMS7LR2 (LGE2111A-T8) NEC Micom 26 EXPLODED VIEW27 +3.3V_NormalFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 4 1.5A +2.5V/+1.8VVout=0.827*(1+R1/R2)=1.225V S7LR core 1.2V volt$ 0.165 4A POWER_LARGE+5V_Normal +12V/+15V +5V_USB Vout=0.8*(1+R1/R2)=1.5319 FROM LIPS & POWER B/D Power_DET780 mA PANEL_POWER EMEA INTERACTIVE Not used : only for small(ready) +5V_Normal & +5V_USB +1.5V_DDRR1 Max 1000mA FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TU2603 TUNER_EU 26 close to TUNER8NC_3 9IF_AGC 10 DIF[P] 11 DIF[N] TDSS-G201D TU2601 TDSQ-G001D TDSN-G301D+3.3V_S2_DE +3.3V_T2_TU IF_AGC_MAIN TU2603-*1 TDSN-C201DIC2602 TJ4220GDP-ADJ IF_P_MSTAR +3.3V_T2_TU +1.23V_TU TU_CHINA TU_T2/C TU26026SIF TU_T/C/S26SIF 38 32 +B4[3.3V] 33 S2_F22_OUTPUT 34 S2_SCL 35 S2_SDA 36 LNB 37 GND_4 SI2156_DVB_1INPUT_H 28 P4R_GLOBAL_TUNER_BLOCKERROR & VALID PIN Close to TUNERclose to TUNER Vo=VREF*(1+R2/R1) 29 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LGE2112-T8 * Dual Stream is only Korea 3D spec 2 EXTERNAL SPEAKER OUT DSUB CVBS In/OUT H/P OUT TUNER_I2C RSDS Power OPT Normal 2.5V MAIN2, HW OPT VDDC 1.05VOLED NonOS:ErrorOut OS:DualStream OS:NON_DualStream PHM_ONMODEL_OPT_1 B8 A8MODEL_OPT_7 MODEL_OPT_4 MODEL_OPT_5 NON_DVB_S 120HZ Normal Power 3.3VMODEL OPTION AB3 ANALOG SIF STby 3.5VSIDE USB SCART1_RGB/COMP1 AUDIO OUT DDR3 1.5V EMEA INTERACTIVEDVB_T2 T24 NonOS:NON_ErrorOut AB2 MODEL_OPT_6 MODEL_OPT_2 3D DVB_S LOW MODEL_OPT_0 NON_DVB_T2 PIN NO. NON_3D NON_120HZ MODEL OPTIONF4 U23 HD MODEL_OPT_3 HIGH FHD T25 PHM_OFF NON_OLED PIN NAME SIDE COMP 30 NTP-7500LIC501 USB1_DIODES 33 RGB/SPDIF/PC/HP/USBEARPHONE BLOCK EMEA INTERACTIVE USB2_DIODES 35 Full Scart/ Comp1REAR COMPONENT PHONE JACKFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC1700MSTAR-EEPROM EXT_SPK CONTROL JK1700 PEJ034-01 TPA3124D2PWPR 36 UART/I2C SWITCHEXT_SPK_CONTROL/DEBUG EXT_SPK OUT EXT_SPK AMPUART_SW1 UART_SW2 INTERACTIVE NEC USB_DOWNLOAD UART_SW NEC DEBUG MSTAR DEBUG DEBUG_NEC/MSTAR DBG_SW NEC-EEPROM EEPROM_SW EMEA INTERACTIVE EXT SPK 17 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS CI TS INPUT CI POWER ENABLE CONTROL CI DETECT CI SLOT CI HOST I/F 37 * 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 38 ETHERNETLAN 21 * H/W option : ETHERNETFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 39 REAL TIME CLOCK(RTC)3 Step Up regulator from 3.5V to 5V IC301 UPD78F1164GF(S) NEC_MICOMMICOM MODEL OPTION MODEL OPTION EMEA INTERACTIVE SUB MICOM 40 IR & LEDFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 6 CONTROL EMEA INTERACTIVE IR/CONTROL 41 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS HDMI_1 HDMI 8 HDMI_2 For CEC SIDE_HDMI EMEA INTERACTIVE HDMI_1 42 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LGE2112-T8 H5TQ1G63DFR-H9C S7LR_DIVX_MS10 EMEA INTERACTIVE DDR 12 DDR3 1.5V By CAP - Place these Caps near Memory Close to DDR Power Pin CLose to DDR3 CLose to Saturn7M IC DDR3 1.5V By CAP - Place these Caps near Memory Close to DDR Power Pin CLose to DDR3 CLose to Saturn7M IC 43 LGE2112-T8 PM MODEL OPTION I2C Internal demod out EEPROM A0h FLASH/EEPROM/GPIOIC101-*2 LGE2111A-T8 LGE2111A-VD AT24C1024BN-SH-T LGE2112-T8 1MS7LR2_UO4_Divx/MS10/RM/AVS IC101-*3 S7LR2_UO4_Divx/MS10 from CI SLOTfor SYSTEM/HDCP EEPROM&URSA3 for SERIAL FLASH NAND FLASH MEMORY <CHIP Config> (I2S_OUT_BCK,I2S_OUT_MCK,PAD_PWM1PAD_PWM0) DIMMING <CHIP Config1)> Boot from SPI CS1N(EXT_FLASH) 1b0 Boot from SPI_CS0N(INT_FLASH) 1b1 $0.16 $0.44 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS DVB_S 27 44 DVB-S2 LNB Part AllegroPCB_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 (Option:LNB) 2AOuput trace widths should be sized to conduct at least 2A 3A
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