LG Electronics 42LT760H-ZA IC5400 NTP-7500L

THERMAL

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.

D5402

100V

1N4148W

OPT

R5402 100

0.1uF

C5421

50V

R5411

12

C5434

0.47uF

50V

C5408

33pF

50V

R5407

12

C5403

1000pF

50V

R5405

100

R5406

3.3

OPT

R5413

12

R5403 100

R5414

12

0.1uF

C5419

50V

C5427

1uF

25V

C5425

22000pF

50V

C5416

22000pF

50V

C5422

10uF

35V

0.1uF

C5436

50V

+3.3V_NORMAL

C5426

22000pF

50V

L5402

NRS6045T100MMGK

10.0uH

R5412

12

C5423

10uF

35V

0.1uF

C5400

50V

C5432

390pF

50V

0.1uF

C5437

50V

0.1uF

C5418

50V

R5409

12

0.1uF

C5401

50V

SPK_L-

C5402

100pF

50V

C5406

33pF

50V

C5405

10uF

10V

D5400

100V

1N4148W

OPT

C5404

1000pF

50V

C5430

390pF

50V

C5429

390pF

50V L5405

NRS6045T100MMGK

10.0uH

SPK_R-

+24V_AMP

L5403

NRS6045T100MMGK

10.0uH

C5411

0.1uF

16V

AUD_MASTER_CLK

0.1uF

C5438

50V

SPK_R-

AUD_SCK

D5401

100V

1N4148W

OPT

R5404

3.3K

AUD_LRCK

C5415

1000pF

50V

R5401

10K

I2C_SDA1

0.1uF

C5413

16V

AUD_LRCH

L5401

BLM18PG121SN1D

+24V_AMP

SPK_R+

C5431

390pF

50V

+24V_AMP

D5403

100V

1N4148W

OPT

C5414

10uF

10V

OPT

R5408

12

C5433

1uF

25V

L5404

NRS6045T100MMGK

10.0uH

SPK_L-

C5435

0.47uF

50V

C5428

1uF

25V

I2C_SCL1

C5409

10uF

10V

SPK_L+

P5400

WAFER-ANGLE

1

2

3

4

MAIN_AMP_MUTE

0.1uF

C5439

50V

C5417

22000pF

50V

R5400

10K

R5410

12

SPK_R+

0.1uF

C5412

16V

+24V

C5410

10uF

10V

OPT

0.1uF

C5420

50V

SPK_L+

C5424

0.01uF

50V

OPT

L5400

CIS21J121

Q5400

MMBT3904(NXP)

E

B

C

4.7uF

C5407

10V

R5418

5.1K

R5415

5.1K

R5416

5.1K

R5417

5.1K

MAIN_AMP_RESET

R5421

33

R5422

10K

IC5400

NTP-7500L

1

AGND_PLL

2

AVDD_PLL

3

DVDD_PLL

4

LF

5

DGND_PLL

6

GND_1

7

DGND

8

DVDD

9

SDATA

10

WCK

11

BCK

12

SDA

13

SCL

14

/FAULT

15

MONITOR0

16

MONITOR1

17

MONITOR2

18

BST2B

19

PGND2B

20

OUT2B_1

21

OUT2B_2

22

PVDD2_1

23

PVDD2_2

24

PVDD2_3

25 OUT2A_1

26 OUT2A_2

27 PGND2A

28 BST2A

29 VDR2

30 AGND

31 VCC_5

32 VDR1

33 BST1B

34 PGND1B

35 OUT1B_1

36 OUT1B_2

37 PVDD1_1

38 PVDD1_2

39 PVDD1_3

40 OUT1A_1

41 OUT1A_2

42 PGND1A

43 BST1A

44 /RESET

45 AD

46 GND_IO

47 CLK_I

48 VDD_IO

49

[EP]

+3.5V_ST

SPEAKER_R

DUAL COMPONENT

Q1801

0x54

SPEAKER_L

1ST : 0TRIY80001A 2ND : 0TR387500AA

54AMP_NEO

2011.04.30

From SOC

xxLT760H-UA

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)