LG 55EA9800 Schematic

OLED TV Repair Guide

LGE Internal Use Only

`13 years New Models

< Applicable Model >

55EA9800

Main PCB for Broadband

LGE Internal Use Only

55EA9800

Local Dim.

To PSU

Module

wifi

Motion assy

Clear Speaker

3

2

1

CAM USB

Main processor_Digital(LG1152D),

1

DDR Memory Flash Memory

Main processor_analog(LG1152A)

2

Micom for Key/IR sensing

3

IR + Digital Eye

Front Spk Local Key

4

5

Audio AMP (Max 12W)

4

HDMI switch (4:1)

5

H13 Block diagram

LGE Internal Use Only

DIF(P/N)

Tuner

CVBS

SIF

AUD

M-Remote_Rx/Tx

Motion-R

SCART

PC_AUDIO

AV1

COMP1

HDMI1~4

Logo Light

USB_W-iFi

USB1(USB3.0) USB2(USB2.0) USB3(USB2.0)

USB_CAM

LAN

LNB

SC_CVBS, RGB, Audio L/R

DTV/MNT_LR/V_OUT

PC_Audio_L/R

AV1_Audio L/R

Comp1 Y,Pb,Pr

HDMI_CEC

WOL / WOW

AV1_CVBS

HDMI

Switch

PHY

USB HUB

LG1154A

USB 2.0

USB 3.0

USB 2.0

H13

RMII

BB_TP_DATA

CVBS

DAC_DATA

AAD_DATA

HSR_P/M

16

H13

LG1154D

16

FRC

TCON

8

SPDIF

IRB_SPI

H/P Audio L/R

I2S

LVDS : Quad

H/P AMP

Audio

AMP

CI

IR_B

Micom

OPTIC

IR_Blaster

H/P

SPK/ Clear Speaker

CI

OLED Module

DDR3

4Gb×4 (1600)

DDR3

eMMC

H13 Block diagram

LGE Internal Use Only

DVB-CI/CI+

Tuner

HDMI

DIF

SIF

Audio L/R(4-ch)

SCART out

Line Out

CVBS(3ch)

CVBS-Out

Component(2ch)

H13A H13D

GBB AFE

1ch@30MHz

w/ PLL

BTSC AFE

10b@18.432MHz

w/ PLL

1ch L/R

Audio-ADC

SW

24b@48KHz

Audio DAC

SW

(48KHz )

Audio DAC (48KHz)

CVBS DAC

SW SW

CVBS AFE(2-ch)

12b@54MHz

3ch Video

AFE

10b@148.5MHz

w/ LLPLL

I2Cx1 I2Cx1

GPIOIx16

SDRAM

(MCP)

Global Baseband

V/Q, DVB-T/C ISDB-T

10x3ch

Capture

Mux

Block (3CH)

LVDS

Tx

Audio PLL

w/ DCO

TS (P)

I2S(External)

I2S

I2S(HPD)

Digital AMP

SPDIF

5x1ch (1ch)

TS(P) TS(P)

AAD

(THAT)

Audio

Mux

Digital Audio

Output

CVBS

Encoder CVD

Y/C

CVBS

LVDS

Rx

HDMI

(1-Link)

HDMI-Rx 1.4 (1-port PHY)

3D, ARC, 4kx2k

TS(S)

System Demux

Audio DSP

Multi-STD

Audio Decoder

LX4 HiFi EP

Sound DSP

Clear Voice II

Perceptual

Volume Control

Slim SPK

DivX

Bluetooth

MCU

Mux

Source Mux

16

TS(S)

DE

TNR

De-interlacer

Main/Sub Scaler

DDR3 Controller

DDR3 PHY

16

Video Decoder

Multi-STD

HD Decoder

(Boda950)

Video Encoder

1080p@30fps

CPU

ARMCA9 Core

Dual 1.2GHz

32KBI$

32KBD$

1MB L2 $

H3D

FRC

SRE

VCR

BE MCU

PE1

LED

OSD

DDR3 Controller

DDR3 PHY

16

GPU Rogue Han

2D GFX

JPG/PNG Decoder

JPG Encoder

TrustZone

Secure Engine

48KB ROM

64KB SRAM

OTP UART Timer

TCON

Output formatter

16

USB2.0x3

UARTx3

GPIOx136

EMAC

SCI

SPIx2

I2Cx10

USB3.0 x1

eMMC

DMAC(8ch)

Timer

WDT

SRAM 16KB

(120Hz)

Vx1/EPI/LVDS Combo

DCO

CPLL

x2

SPLL

DPLL

DDR

PLL

PHY

H13 Block diagram

LGE Internal Use Only

H13 Block diagram

LGE Internal Use Only

TU6503

TDSQ-H651F

[+3.3V_S2_DEMOD] 32

[+3.3V_TUNER] 5

[+.1.8V_TUNER] 7

[+1.23V_S2_DEMOD] 30

[S2_F22_OUTPUT] 33

[LNB] 36

[S2_SCL] 34

[S2_SDA] 35

[RESET] 2

[T/C_DIF[N]] 11

[SLC] 3 [SDA] 4

[ERROR] 16

[SYNC] 17 [VALID] 18 [MCLK] 19

[D0] 20 [D1] 21 [D2] 22 [D3] 23 [D4] 24 [D5] 25 [D6] 26 [D7] 27

+3.3V_D_Demod

+3.3V_TU

+1.8_TU

+1.23V_D_Demod

LNB_TX LNB_OUT

I2C_SCL4 I2C_SDA4

/TU_RESET1 IC2_SCL6 IC2_SDA6

FE_DEMOD1_TS_ERROR FE_DEMOD1_TS_SYNC FE_DEMOD1_TS_VAL FE_DEMOD1_TS_CLK

FE_DEMOD1_TS_DATA [0-7]

+3.3V_NORMAL

3.3K Ω

22 Ω

33 Ω

10 [TONECTRL] 2 [LNB] 7 [SCL] 8 [SDA]

AP6 [SCL3] AR6 [SDA3]

AG6 [GPIO10] AH34 [SCL5] AH33 [SDA5]

AL37 [TP_DVB_ERR] AL36 [TP_DVB_SOP] AL35 [TP_DVB_VAL] AM36 [TP_DVB_CLK]

AM35 [TP_DVB_DATA0] AN36 [TP_DVB_DATA1] AN37 [TP_DVB_DATA2] AN35 [TP_DVB_DATA3] AP37 [TP_DVB_DATA4] AP36 [TP_DVB_DATA5] AR37 [TP_DVB_DATA6] AR37 [TP_DVB_DATA7]

A8303SESTR-TB

LNB

IC6900

H13

LG1154D

[S2_RESET] 31

[T/C_DIF[P]] 10 [T/C_DIF[N]] 11

/S2_RESET

IF_P IF_N TUNER_SIF TU_CVBS IF_AGC

FILTER

ADC_I_INP

ADC_I_INN

AG5 [GPIO9]

U17 [ADC_I_INP] V17 [ADC_I_INN]

H13

LG1154A

H13 Block diagram

LGE Internal Use Only

Jack Side SOC Side

AV1

Phone JACK

FULL

SCART

(18P)

Component 1

Phone JACK

AV1_CVBS_IN

AV_L/R_IN

SC_CVBS_IN

SC_R/G/B

/CVBS_IN_SOY

SC_L/R_IN

COMP1_Y/Pb/Pr

AV1_CVBS_IN_SOC

AUAD_L/R_CH2_IN

SC_CVBS_IN_SOC

COMP1_PR_IN_SOC COMP1_Y_IN_SOC COMP1_PB_IN_SOC COMP1_Y_IN_SOC_SOY

AUAD_L/R_CH3_IN

COMP2_PB_IN_SOC

COMP2_Y_IN_SOC COMP2_Y_IN_SOC_SOY COMP2_PR_IN_SOC

[CVBS_IN3]

[AUAD_L/R_CH2_IN]

[CVBS_IN2]

[PR1/Y1/PB1/SOY1_IN]

H13

(LG1154A)

[AUAD_L/R_CH3_IN]

[PB2/Y2/SOY2/PR2_IN]

Tuner

TU_CVBS_IN

SIF DIF[P/N]

TU_CVBS_IN_SOC

TUNER_SIF ADC_I_INP/INN

[CVBS_IN1]

[AAD_ADC_SIF] [ADC_I_INP/INN]

H13 Block diagram

LGE Internal Use Only

SC_L/R_IN

AV_L/R_IN

[AUAD_L_CH1_IN]

[AUAD_L_CH3_IN]

[AUAD_L_CH2_IN]

[AUD_SCART_OUTL/OUTR]

SCART_Lout/Rout

AZ4580MTR

OP AMP

DTV/MNT_L/R_OUT

Mute

CTRL

[TR]

pi filter

MICOM

SCART

SCART_MUTE

AUDIO L/R OUT

[DACSCK] [DACLRCK] [DACLRCH]

[SCL0/SDA0]

[GPIO21]

AUD_SCK/LRCK/LRCH

I2C_SCL1/SDA1

AMP_RESET_N

MAIN

TAS5733

4P wafer

LPF

H13

LG1154

AMP_MUTE

MICOM

Tuner

TUNER_SIF

[AAD_ADC_SIF]

[PHY0_ARC_OUT_0]

[AUDA_OUTL]

[IEC958OUT]

HP_L/ROUT_MAIN

SPDIF_OUT

TPA6138A2 Headphone

SIDE_HP_MUTE

AMP

WOOFER

TAS5733

LPF

2P wafer

LPF

HEAD PHONE & line out

SPDIF_OUT_ARC

H13 Block diagram

LGE Internal Use Only

H13

LG1154D

HDMI_S/W_RESET

HDMI_INT

SPDIF_OUT_ARC

HDMI Out put 8bits

I2C_SCL/SDA 5 2bits

HDMI

Switch

(IC3201 / SII9587CNUC)

CEC_REMOTE

SPDIF_OUT_ARC

HDMI1

TMDS Link 8bits

CEC_REMOTE

DDC_I2C 2bits

HDMI2

TMDS Link 8bits

CEC_REMOTE

DDC_I2C 2bits

HDMI3

TMDS Link 8bits

CEC_REMOTE

DDC_I2C 2bits

MICOM

(IC3000 /

R5F100GEAFB)

OCP (IC3202 / TPS2051)

TMDS Link 8bits

DDC_I2C 2bits

MHL_DET

HDMI4

CEC_REMOTE

H13 Block diagram

LGE Internal Use Only

[USB2_2_DP0 / DM0]

[EB_CS2/GPIO92]

[USB2_1_DP0 / DM0]

[USB2_0_DP / DM]

[USB3_DP0/DM0] [USB3_RX0P / M]

[USB3_TX0P / M]

[HUB_VBUS_CTRL0]

[HUB_PORT_OVER0/1]

[UART1_RXD / TXD]

[GPIO15 / GPIO18]

H13

LG1154D

[GPIO13]

USB2_HUB_IC_IN_DP / DM

USB_CTL2

USB2_ DP2 / DM2

WIFI_DP / DM

USB3_DP / DM USB3_RX0P/RX0M

USB3_TX0P/TX0M

USB_CTL2

/USB_OCD1

M_REMOTE_RX / TX M_REMOTE_CTS / RTS

M_REMOTE_RESET

USB HUB

USB2512B-AEZG

USB_CTL3

Motion Remote

USB_CAMERA_DP / DM

USB_DP3 / DM3

OCP USB2/3

TPS2062C

OCP USB1

TPS2554

Receiver

+5V_USB3

+5V_USB2

+5V_USB1

USB_Camera

(구주7600 - Ready)

USB3

USB2

USB_WIFI

USB1 (USB3.0, PVR Ready)

CAM_DET

(R5F100GEAFB)

WOL/WOW_POWER_ON

MICOM

[UART0_RXD]

[UART0_TXD]

SOC_TX

MICOM

(R5F100GEAFB)

SOC_RX

SOC_TX

SOC_RX

4Pin debugging

Wafer

P3800

Interconnection - 1

LGE Internal Use Only

55EA9800

[PCBs]

5

4

2

3

6

1

Main PCB

2

PSU

3

WIFI ASSY

4

BT MOTION ASSY

5

IR PCB

6

Touch Key / Logo

Contents of LCD TV Standard Repair Process

LGE Internal Use Only

No. Error symptom (High category) Error symptom (Mid category) Page Remarks

1

2 No video/No audio 2

3 Picture broken/ Freezing 3

4 Color error 4

5

6

7

8

9 Wrecked audio/discontinuation/noise 9

10

11

A. Video error

B. Power error

C. Audio error

No video/Normal audio 1

Vertical/Horizontal bar, residual image,

light spot, external device color error

No power 6

Off when on, off while viewing, power

auto on/off

No audio/Normal video 8

Remote control & Local switch checking

MR13 operating checking 11

5

7

10

12

13 Camera operating checking 13

14 External device recognition error 14

15 E. Noise Circuit noise, mechanical noise 15

16 F. Exterior error Exterior defect 16

D. Function error

First of all, Check whether there is SVC Bulletin in GCSC System for these model.

Wifi operating checking 12

Standard Repair Process

LGE Internal Use Only

Established

date

Revised date

2013.01.31

LCD TV

Error

symptom

A. Video error

No video/ Normal audio

First of all, Check whether all of cables between board is inserted properly or not.

(Main B/D↔ Power B/D, EPI Cable,Speaker Cable,IR B/D Cable,,,)

☞A18 ☞A1

N

Y

Check OLED Light On with naked eye

☞A18

Check Power Board 24V output

On

Normal voltage

N

Repair Power Board or parts

Y N Check Power

Board

24V, 12V,3.5V etc.

Replace Inverter

Y

or module

Normal

voltage

N

Repair Power Board or parts

End

Replace T-con

Y

Board or module And Adjust VCOM

No video Normal audio

Normal

audio

Move to No video/No audio

1/16

※Precaution

Always check & record S/W Version and White Balance value before replacing the Main Board

☞A4 & A2

Replace Main Board

1

Re-enter White Balance value

Standard Repair Process

LGE Internal Use Only

LCD TV

Error

symptom

No Video/ No audio

☞A18

Check various voltages of Power Board ( 3.5V,12V,20V or 24V…)

A. Video error

No video/ No audio

Normal

voltage?

Replace Power Board and repair parts

Y

N

Check and replace MAIN B/D

Established

date

Revised date

End

2013.01.31

2/16

2

Standard Repair Process

LGE Internal Use Only

LCD TV

☞ A3

Check RF Signal level

Normal Signal?

N

Check RF Cable

Connection

1. Reconnection

2. Install Booster

Normal

Picture?

Y

Close

Y

N

Error

symptom

A. Video error

Picture broken/ Freezing

. By using Digital signal level meter . By using Diagnostics menu on OSD

( Setting→ Set up→ Manual Tuning → Check the Signal )

- Signal strength (Normal : over 50%)

- Signal Quality (Normal: over 50%)

Check whether other equipments have problem or not.

(By connecting RF Cable at other equipment)

→ DVD Player ,Set-Top-Box, Different maker TV etc`

☞ A4

Normal

Picture?

Contact with signal distributor

or broadcaster (Cable or Air)

Y

N

Check

S/W Version

Bulletin?

S/W Upgrade

SVC

Y

Normal

Picture?

Y

Established

date

Revised date

N

2013.01.31

Check

Tuner soldering

N

Replace

Main B/D

3/16

Y

Close

3