LG 42LM620T-ZE manuals

Lg 42LM620T-ZE User Manual (119 pages)

Brand: Lg | Category: TVs & monitors | Size: 10.45 MB |

English

Table of contents

LED LCD TV

1

SERVICE MANUAL

1

CONTENTS

2

SAFETY PRECAUTIONS

3

SERVICING PRECAUTIONS

4

SPECIFICATION

6

6. RGB input (PC)

8

7. HDMI Input

9

ADJUSTMENT INSTRUCTION

10

Play: Start

11

3.5.2. Method & notice

12

4. Manual Adjustment

13

(2) Manual adjustment. method

14

4.3. EYE-Q function check

15

Local Dimming Demo

15

(Edge LED Model)

15

4.9.1. Overview

16

4.9.2. Method

16

5. Audio

17

SCREW ASSEMBLY WORKING GUIDE

18

BLOCK DIAGRAM

19

EXPLODED VIEW

20

HDCP EEPROM

21

PLACE AT JACK SIDE

22

SMD Gaskit

23

PLACE AT MAIN SOC SIDE

24

PLACE AT IC6000

24

Renesas MICOM

28

RGB/ PC AUDIO/ SPDIF

30

IR & KEY

33

Zener Diode is

33

+5V_USB FOR USB1

34

ALL M_REMOTE OPTION

36

Ethernet Block

37

2011.09.29

40

HEADPHONE AMP

40

Option FOR MTK

41

Option FOR LG1152

41

DVB-S2 LNB Part Allegro

43

COMMERCIAL_OPTION

44

2011.11.21

44

LOCAL DIMMING

46

<LEVEL SHIFTER BLOCK>

47

<POWER BLOCK>

47

THIS IS REVERSE PATTERN !!!!

47

HYNIX_EMMC_2GB

48

Don’t Connect Power At VDDI

48

2012 LED/LCD TV

51

Engineering guide

51

◈ CONTENT ◈

52

EPI Interface

53

HF mini-LVDS

54

Main PCB for Broadband

56

MTK5369 Block Diagram( LM76 )

57

Jack Interface

58

EPI LEFT

59

EPI RIGHT

59

Main SoC

60

LVDS Tx

61

Interconnection - 1

62

Circuit Block Diagram

63

Pin Configuration

63

KEY1, KEY2 Voltage

63

(Tolerance of voltage ±0.2V)

63

Ass’y Picture

63

Power LED Scenario

64

Manual of Touch Sensitivity

65

Addr Value

66

1. System

68

3. M4 Block Diagram

70

4. Function list

71

Method Description

72

WIFI built in feature

74

1. Widevine?

77

2. HDCP 2.0 & NETFLIX?

77

3. DTCP?

77

4. Changed BOM

77

1. Widevine?

78

2. HDCP 2.0 & NETFLIX?

79

3. DTCP?

80

Continue to the next page

84

A. Video error

85

A. Picture Problem

87

A. Picture Problem (DVB-S/S2)

88

B. Power error

91

C. Audio error

93

D. General Function Problem

95

D. Function error

96

E. Noise

97

F. Exterior defect

98

Continued from previous page

99

LGE Internal Use Only

100

Check the DC 24V, 12V, 3.5V

101

(Power Board ↔ Main Board)

101

Edge LED

101

Æ support -Æ signal test

102

<ALL MODELS>

104

A. Video error_Color error

106

No Light

109

Dim Light

109

No picture/Sound Ok

109

Un-repairable Cases

110

B. Power error _No power

113

Checking method

116

D. VCOM Adjustment

119

1. Case

119

2. Equipment

119

3. Adjust sequence

119

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