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LG Electronics 42LN548C/549C Check Commercial Features, External speaker8OHM, 1W, Single-End

Models: 42LN548C 42LP360H 361H-ZA 42LN548C/549C-ZA

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8. Check Commercial Features.

8.1. External speaker(8OHM, 1W, Single-End)

■External speaker and Oscilloscope

■Power only mode

(1)Connect external speaker(8 ohm) to speaker out port with phone jack on TV side as below.

(2)Check the Max. speaker output is 1W or not. Sine wave with 1KHz will be displayed.

8.2.IR OUT

< Equipment & Condition >

■Simple Jig (commercial check JIG)

■Power only mode

(1)Connect each other RS232C port on the Commercial Check JIG.

(2)Press any key on Service Remote-control.

(3)Check the LED status of the Check JIG.

-IR LED(OK condition: blinking) (LED #1)

Copyright ©	LG Electronics. Inc. All rights reserved.	- 15 -	LGE Internal Use Only
Only for training and service purposes

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LG Electronics 42LN548C/549C, 361H-ZA, 42LP360H Check Commercial Features, External speaker8OHM, 1W, Single-End, Ir Out

Contents

MODEL 42LP360H/361H 42LN548C/549C SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL LED TVLGE Internal Use Only Only for training and service purposesCopyright LG Electronics. Inc. All rights reservedLeakage Current Cold CheckAntenna Cold Check SAFETY PRECAUTIONSGeneral Guidance Before returning the receiver to the customerElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSRemoval IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement3. Test method SPECIFICATION4. Model General Specification 1. Application rangeRemarks SpecificationSymbolrate 4.0Msymbols/s to 7.2Msymbols/s Only for training and service purposes5.3. RGB Input PC - FHD Model 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.2. RGB Input PC - HD ModelPCDVI 5.3. HDMI InputPC/DTV3. Main PCB check process ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data After downloading, have to adjust Tool Option again3.1. ADC Process 3.2. EDID Download4. Total Assembly line process 4.1. White Balance adjustment3.4 Function Check 4.5. Outgoing condition Configuration 5. GND and HI-POT Test6. Model name & Serial number D/L 6.1. Signal Table7.2. CI+ Key Download 7. CI+ key download6.3. Method & notice 7.1. Communication Prot connection8. Check Commercial Features 8.1. External speaker8OHM, 1W, Single-End8.2. IR OUT Only for training and service purposes TROUBLE SHOOTING GUIDE1. Check the booting Voltage 2. Digital TV VideoCopyright 3. Analog TV Video4. AV Video Only for training and service purposesCopyright 5. RGB Video6. HDMI Video Only for training and service purposesCopyright 7. Audio of All iput8. TV Audio Only for training and service purposesCopyright 9. AV Audio10. RGB Audio Only for training and service purposesBLOCK DIAGRAM S7LR2 LGE211A-T8Tuner DVB- T/C LG Electronics. Inc. All rights reserved EXPLODED VIEWOnly for training and service purposes CopyrightCopyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposes2013 S7LR2 2012VDDC SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Only for training and service purposes+3.3VNormal780 mA FROM LIPS & POWER B/DPowerDET +1.5VDDRNTP-7500L IC501Only for training and service purposes THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETICOnly for training and service purposes LVDS51Pin LVDS Connector For FHD 60Hz 30Pin LVDS ConnectorHDMI2 Only for training and service purposesHDMI EEPROM HDMI1RS - 232C RS232C2013 S7LR2 2012 . 11SIDE USB Only for training and service purposesHEADPHONE RGB PC2012 . 11 Only for training and service purposesS7LRDIVXMS10 2013 S7LR2Only for training and service purposes THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETICTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS2013 S7LR2 EXTSPEAKERAMPSPEAKER OUT JACK Only for training and service purposesOption name of this page CI SLOT because of Hong Kong Only for training and service purposesCI POWER ENABLE CONTROL CI RegionTU2603 GP4RGLOBALTUNERBLOCKOnly for training and service purposes TU2602