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LG Electronics 42LN548C/549C-ZA, 361H-ZA Headphone, Rgb Pc, Side Usb, Pc Audio, Spdif Optic Jack

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

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HEADPHONE

HEADPHONE

HP_LOUT

C1118

HEAD_PHONE

C

10uF

HEAD_PHONE

E

16V

C1115

R1125

HEAD_PHONE

1000pF

Q1101

B

HEAD_PHONE

50V

1K MMBT3904(NXP)

B

Q1104

JK1101

OPT

E

C MMBT3904(NXP)

+3.3V_Normal

KJA-PH-0-0177

HEAD_PHONE

HEAD_PHONE

GND

5

R1130

L

4

10K

R1155

HP_DET

1K

DETECT

3

HP_ROUT

HEAD_PHONE

R

1

C1119

10uF

HEAD_PHONE

C

16V

C1116

E

HEAD_PHONE

R1128

1000pF

1K

Q1102

B

50V

MMBT3904(NXP)

B

Q1103

OPT

HEAD_PHONE

E

MMBT3904(NXP)

C HEAD_PHONE

+3.5V_ST

HEAD_PHONE

Q1105

MMBT3906(NXP)
C	E
	B
	R1129	C
	3.3K
	HEAD_PHONE		B
			SIDE_HP_MUTE
			Q1106
		MMBT3904(NXP)
		E	HEAD_PHONE

RGB PC						+5V_Normal
RGB PC				D1115
				ENKMC2838-T112
					A1
				C
					A2
			R1139	R1140		C1129
			R1139	2.2K		C1129
			2.2K	2.2K		0 . 1uF
						16V
						RGB_DDC_SCL
						RGB_DDC_SDA
		C1127		C1128	R1175
		18pF		18pF	22	R1162
		50V		50V		22
DSUB_VSYNC	010L		010L
DSUB_VSYNC	20S 02		20S 02
DSUB_HSYNC	20S 02		20S 02
	ADUC	D1109	ADUC	D1113
		20V		D1113
		20V		20V
				20V
DSUB_B+
		RGB_ZENER
	R1133	D1110
	75	20V
		ADUC 20S 02 010L
DSUB_G+
	R1135	RGB_ZENER
	R1135	D1111
	75	20V

SIDE USB

	JK1105
(LG)-ZC	USB	1
-305 -3AU04S	DOWNSTREAM	2 3 4
		5

+5V_USB

C1117

22uF

16V

D1100

RCLAMP0502BA

OPT

SIDE_USB_DM

SIDE_USB_DP

ADUC 20S 02 010L

+3.3V_Normal

200L

R1146

10K

02

DSUB_DET

5M

R1147

DSUB_R+

ADMC

1K

R1137

D1112

D1117

20V

5.6V

75

RGB_ZENER

DELETE

ADUC 20S 02 010L

RED GND

GND 2

RED

GREEN GND

DDC DATA

GREEN

BLUE GND

H SYNC

BLUE

NC

V SYNC

GND 1

SYNC GND

DDC CLOCK

DDC GND

JK1104

SPG09-DB-010

6

11

7

12

8

13

9

14

10

15

16SHILED

1

2

3

4

5

PC AUDIO

SPDIF OPTIC JACK

5 . 1 5 M s t a r C i r c u i t A p p l i c a t i o n

+3.3V_Normal

SPDIF_OUT

C1109

C1110

C1131

C1121

R1104

22uF

10uF

0 . 1 u F

100pF

10K

16V

16V

16V

50V

DELETE

DELETE

DELETE

	JK1103
2F01TC1-CLM97-4F
GND
GND	1	c
	1	c
VCC	2	itp O
VCC		reb iF

VIN	3



		4

		SHIELD
		SHIELD

JK1102
PEJ027-04
3	E_SPRING
3
6A	T_TERMINAL1
6A
	B_TERMINAL1			R1107
7A	B_TERMINAL1			15K	PC_R_IN
		DELETE			PC_R_IN
	R_SPRING	DELETE	C1107
4	R_SPRING	D1101	C1107	R1102	R1110
		5.6V	100pF	R1102	10K
		5.6V	50V	470K	10K
		200pF	50V	470K
5	T_SPRING	200pF
5	T_SPRING
	B_TERMINAL2			R1108
7B	B_TERMINAL2			15K	PC_L_IN
		DELETE			PC_L_IN
	T_TERMINAL2	DELETE	C1108	R1103
6B	T_TERMINAL2	D1102	C1108	R1103	R1111
		5.6V	100pF	470K	10K
		200pF	50V

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.

							2013 S7LR2																	2012 . 11 . 12


							RGB/HP/USB																	11

Copyright © 2013 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes

Image 31

LG Electronics 42LN548C/549C-ZA Headphone, Rgb Pc, Side Usb, Pc Audio, Spdif Optic Jack, 2013 S7LR2, 2012 . 11, Rgb/Hp/Usb

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 Download4.1. White Balance adjustment 4. Total Assembly line process3.4 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 connection8.1. External speaker8OHM, 1W, Single-End 8. Check Commercial Features8.2. 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 purposesS7LR2 LGE211A-T8 BLOCK DIAGRAMTuner 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 2012 . 11VDDC 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