LG Electronics 47LT760H-ZA LVDS

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.

TXACLKN

C7102

0.1uF

50V

OPT

TXA0N

C7100

10uF

16V

OPT

TXA1P

TXBCLKN

PANEL_VCC

TXA2P

TXB1P

TXB2P

TXB0N

TXBCLKP

TXA1N

L7100

BLM18SG121TN1D

TXB1N

TXA3P

TXA2N

TXB0P

TXB2N

TXB3N

TXA3N

R7102

10K

LVDS_SEL_LOW

R7101

3.3K

LVDS_SEL_HIGH

TXACLKP

TXA0P

TXB3P

+3.3V_NORMAL

C7101

1000pF

50V

OPT

P7100

FI-RE51S-HF-J-R1500

LVDS_51PIN

1NC

2NC

3NC

4NC

5NC

6AUO_65_MIRROR

7LVDS_SEL

8NC

9NC

10 L/DIM_ENABLE

11 GND

12 RA0N

13 RA0P

14 RA1N

15 RA1P

16 RA2N

17 RA2P

18 GND

19 RACLKN

20 RACLKP

21 GND

22 RA3N

23 RA3P

24 RA4N

25 RA4P

26 GND

27 BIT_SEL

28 RB0N

29 RB0P

30 RB1N

31 RB1P

32 RB2N

33 RB2P

34 GND

35 RBCLKN

36 RBCLKP

37 GND

38 RB3N

39 RB3P

40 RB4N

41 RB4P

42 GND

43 GND

44 GND

45 GND

46 GND

47 NC

48 VLCD

49 VLCD

50 VLCD

51 VLCD

52

GND

LVDS_SEL

LVDS_SEL

R7103

3.3K

BIT_SEL_HIGH

R7104

10K

BIT_SEL_LOW

+3.3V_NORMAL

BIT_SEL

BIT_SEL

TXACLKN

TXA1N

R7108 0

OPT

TXA1P

LVDS_SEL

TXACLKP

P7101

FF10001-30

LVDS_30PIN

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

TXA3N

TXA0P

TXA0N

TXA2P

TXA3P

TXA2N

R7107 33

37_LGD PWM_DIM1

R7106

10K

OPT

+3.3V_NORMAL

R7105

1K

37_LGD

OPC_EN

R7109 0

OPT

[51Pin LVDS OUTPUT Connector]

LVDS

LVDS_SEL

71

LVDS_HIGH_MID

2011.08.11

BIT_SEL

xxLT760H-UA

[30Pin LVDS OUTPUT Connector]

OPC_SEL

Copyright © 2012 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LGE Internal Use Only

Contents

Main CONTENTS 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 5. RGB input (PC) 6. HDMI Input 6.1. DTV mode 6.2. PC mode ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. MAIN PCBA Adjustments 3.1. ADC Calibration 3.3. LAN Inspection 3.3.1. Equipment & Condition SET PC 3.3.2. LAN inspection solution 3.4. LAN PORT INSPECTION(PING TEST) 4. Manual Adjustment 4.1. EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download 4.1.1. Overview 4.1.2. Equipment 4.1.3. Download method 4.2. White Balance Adjustment 4.2.1. Overview 4.2.2. Equipment 4.2.3. Equipment connection MAP 4.2.4. Adj. Command (Protocol) 4.3. Tool Option selection 4.4. Wi-Fi Test 4.5. HDMI ARC Function Inspection 4.5.1. Test equipment 4.5.2. Test method 5. Check Commercial features 5.1. External SPK Out 5.1.1. Equipment & Condition 5.1.2. Check the speaker out 5.2. IR Out and DC Power Outlet (12V) 6. AUDIO output check 6.1. Audio input condition 6.2. Specification 7. GND and HI-POT Test 7.1. GND & HI-POT auto-check preparation 8. USB S/W Download(Service only) 9. Optional adjustments 9.1. Manual ADC Calibration 9.1.1. Equipment & Condition 9.1.2. Adjust method TROUBLESHOOTING GUIDE 1. Power-Up Boot Fail Trouble Shooting guide 2. No OSD Trouble Shooting guide 3. Analog RF Video Trouble Shooting guide 4. Digital RF Trouble Shooting guide 5. AV Video Trouble Shooting guide 6. HDMI Video Trouble Shooting guide 7. RGB-PC Video Trouble Shooting guide 8. Analog RF Audio Trouble Shooting guide 9. AV / RGB-PC Audio in Trouble Shooting guide 10. HDMI Audio in Trouble Shooting guide BLOCK DIAGRAM DVB T/C R L Side LGE2112 (EU Commercial) S/W HDMI Rear EXPLODED VIEW IC104 M24M01-HRMN6TP 8 MID_MAIN_1 NVRAM Model Option HDCP EEPROM Crystal Matching Test result : 27pF -> 20pF -> 24pF EAX6430790* : LD22* / LC22* EAX6443420* : LT22* / LJ22* / LA22* / LB22* FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011.09.29 PLACE AT JACK SIDE C333 / C334 / C335 MTK Recommend : 10 pF CH5 CH4 CH2 10 MID_MAIN_3 DECAP FOR SOC (HIDDEN - UCC) PLACE AT MAIN SOC SIDE 2011.11.21 11 MID_MAIN_SCART PLACE AT JACK SIDE PLACE AT IC8602 IC703 IC701 IC704 IC702 DDR ONE SIDE 12 13 2011.09.26 MID_MAIN_CI CI TS INPUT Close to MT5369 Close to MT5369 CI TS OUTPUT On-semi TYP 1450mA +3.3V_NORMAL DDR MAIN 1.5V #16/#20/#23 LD - GND OR USE LE(N.L.D.) - OPEN LE(L.D.) - USE HPD SWITCH NEC_HPD FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS RGB PC 2011.09.29 SPDIF OUT 36 PC AUDIO RS232C HInteractive L Debug MTK CONNECTION IR & KEY Zener Diode is close to wafer 2011.09.26 IR / KEY 41 USB_WIFI DVR Ready MAX 1.8A MAX 0.4A DVR Ready Full Scart [SCART AUDIO MUTE] AR4800 100 1/16W M_REMOTE 2011.06.04 ZigBee_Radio Pulse M_REMOTE OPTION ALL M_REMOTE OPTION 48 MOTION REMOTE xxLT760H-ZA FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC5400 NTP-7500L 0x54 CI POWER ENABLE CONTROL CI SLOT 2011.10.31 62 Option FOR MTK Option FOR LG1152 +3.3V_NORMAL 65 IF_AGC close to Tuner H/NIM for Commercial (EU) Max 240mA [51Pin LVDS OUTPUT Connector] LVDS 2011.08.11 LVDS_HIGH_MID 71 [30Pin LVDS OUTPUT Connector] LOCAL DIMMING [To LED DRIVER] FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC8100-*1 H26M21001ECR SAMSUNG_EMMC_2GB eMMC I/F Dont Connect Power At VDDI (Just Interal LDO Capacitor) FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ETNHUB_DVDD18 To PHY 84Ethernet Hub CONFIG FOR MAC4 EXT_SPK AMP EXT_SPK OUT EXT_SPK OP AMP FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS MICOM MODEL OPTION REAL TIME CLOCK(RTC) SMD GASKET 7.5T SMD GASKET 5.0T SMD GASKET 5.5T SMD GASKET 6.5T SMD GASKET SMD GASKET 9.5T 2011.02.09xxLT760H-UA 88SMD GASKET FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS EMI BETTER Ethernet Block Ethernet PHY TO Ethernet HuB TO SOC/ MCU TO MCU EXTERNAL_POWER OUT 5V/12V $0.21 Vout=(1+R1/R2)*0.765=5.03V FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 27MHz(200ppm) Pro:Idiom (XMARK)