LG 55EA9800 Assembly instructions

OLED TV Repair Guide
`13 years New Models
< Applicable Model >
55EA9800
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Main PCB for Broadband
55EA9800 CAM USB
To PSU
Module 1
3
4
1 Main processor_Digital(LG1152D),
DDR Memory
Flash Memory
2
3
4
Micom for Key/IR sensing
HDMI switch (4:1)
Audio AMP (Max 12W)
wifi
Local Key
Motion assy
Front Spk
Local Dim.
2
Main processor_analog(LG1152A)
5
5
IR + Digital Eye
Clear Speaker
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
AUD
BB_TP_DATA
DAC_DATA
AAD_DATA
HSR_P/M
CVBS
DIF(P/N)
SIF
Tuner
PC_AUDIO PC_Audio_L/R
AV1_Audio L/R
AV1
COMP1
AV1_CVBS
Comp1 Y,Pb,Pr
HDMI
Switch
HDMI1~4
H13
LG1154A
USB1(USB3.0)
USB2(USB2.0)
USB3(USB2.0) USB
HUB
Motion-R
M-Remote_Rx/Tx
Audio
AMP
OPTIC
SPK/
Clear Speaker
H/P
H/P Audio L/R
SPDIF
I2S
16
DDR3
16
DDR3
CVBS
SCART
SC_CVBS, RGB, Audio L/R
DTV/MNT_LR/V_OUT
LNB
HDMI_CEC
USB 3.0
USB 2.0
USB 2.0
USB_CAM
USB 2.0
USB_W-iFi
PHY RMII
LAN
WOL / WOW
H/P AMP
IR_Blaster
IRB_SPI IR_B
Micom
H13
LG1154D
FRC
TCON
Logo Light
CI
CI
16
DDR3
16
DDR3
8
eMMC
4Gb×4 (1600)
LVDS : Quad
OLED Module
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
Tuner
DIF TS (P) System
Demux
Audio DSP
Multi-STD
Audio Decoder
LX4 HiFi EP
SIF
Global Baseband
V/Q, DVB-T/C ISDB-T
CVBS(3ch)
Component(2ch)
HDMI-Rx 1.4
(1-port PHY)
3D, ARC, 4kx2k
AAD
(THAT)
Mux
H13A H13D
Audio L/R(4-ch)
SCART out
SW
I2S(External)
Audio DAC (48KHz)
Video Decoder
Multi-STD
HD Decoder
(Boda950)
CVBS AFE(2-ch)
12b@54MHz
CVBS-Out
Mux
10x3ch
DE
CVBS
Encoder
DDR3 PHY
DDR3 Controller
Audio
Line Out
LVDS
Tx
Audio PLL
w/ DCO
Source Mux
TNR
De-interlacer
Main/Sub Scaler
H3D
VCR
2D GFX
JPG/PNG Decoder
TrustZone
CPU
ARMCA9 Core
Dual 1.2GHz
32KBI$ 32KBD$
1MB L2 $
SWSW
3ch Video
AFE
[email protected]Hz
w/ LLPLL
LVDS
Rx
Sound DSP
Clear Voice II
Perceptual
Volume Control
Slim SPK
DivX
Bluetooth
Digital AMP
I2S
I2S(HPD)
SPDIF
JPG Encoder
CVD
Y/C
CVBS
CPU
64KB SRAM
48KB ROM
UART
OTP
Timer
UARTx3
EMAC
SCI
SPIx2
I2Cx10
eMMC
DMAC(8ch)
Timer
WDT
PHY
SRAM 16KB
I2Cx1
BE
H3D
DDR3 PHY
DDR3 Controller SPLL
DDR
PLL
DPLL
DDR
PLL
Digital
Audio
Output
16 16
TS(P) TS(P)
FRC SRE
PE1
OSD
LED
Output formatter
TCON
MCU
Capture
Block
(3CH)
GBB AFE
1ch@30MHz
w/ PLL
BTSC AFE
[email protected]32MHz
w/ PLL
1ch L/R
Audio-ADC
24b@48KHz
CVBS DAC 5x1ch (1ch)
I2Cx1
HDMI
(1-Link)
HDMI
Mux
DVB-CI/CI+
16 16
Video Encoder
1080p@30fps
TS(S)
Vx1/EPI/LVDS Combo
(120Hz)
GPU Rogue Han
USB3.0 x1
USB2.0x3
GPIOx136
Secure Engine
TS(S)
Audio DAC
(48KHz ) I2S
I2S
SW
CPLL DCO
x2
MCU
SDRAM
(MCP)
GPIOIx16
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
TU6503
TDSQ-H651F H13
LG1154D
[RESET] 2 /TU_RESET1 AG6 [GPIO10]
IC2_SCL6
IC2_SDA6 AH34 [SCL5]
AH33 [SDA5]
[SLC] 3
[SDA] 4
[+3.3V_TUNER] 5
[+.1.8V_TUNER] 7
[T/C_DIF[P]] 10
[T/C_DIF[N]] 11
FILTER
[T/C_DIF[N]] 11
[ERROR] 16
[SYNC] 17
[VALID] 18
[MCLK] 19
AL37 [TP_DVB_ERR]
AL36 [TP_DVB_SOP]
AL35 [TP_DVB_VAL]
AM36 [TP_DVB_CLK]
FE_DEMOD1_TS_ERROR
FE_DEMOD1_TS_SYNC
FE_DEMOD1_TS_VAL
FE_DEMOD1_TS_CLK
[D0] 20
[D1] 21
[D2] 22
[D3] 23
[D4] 24
[D5] 25
[D6] 26
[D7] 27
FE_DEMOD1_TS_DATA [0-7]
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]
[+1.23V_S2_DEMOD] 30
+1.23V_D_Demod
[S2_RESET] 31 /S2_RESET AG5 [GPIO9]
[+3.3V_S2_DEMOD] 32
LNB_TX
LNB
IC6900
A8303SESTR-TB
10 [TONECTRL]
2 [LNB]
7 [SCL]
8 [SDA]
[S2_F22_OUTPUT] 33
[LNB] 36
[S2_SCL] 34
[S2_SDA] 35 I2C_SCL4
I2C_SDA4
AP6 [SCL3]
AR6 [SDA3]
22 Ω
33 Ω
LNB_OUT
+3.3V_NORMAL
3.3K Ω
+1.8_TU
+3.3V_TU
+3.3V_D_Demod
H13
LG1154A
IF_P
IF_N
TUNER_SIF
TU_CVBS
IF_AGC
U17 [ADC_I_INP]
V17 [ADC_I_INN]
ADC_I_INP
ADC_I_INN
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
H13
(LG1154A)
[CVBS_IN3]
AV1_CVBS_IN
AV1
Phone JACK
[AUAD_L/R_CH3_IN]
COMP1_Y/Pb/Pr
Component 1
Phone JACK
AV1_CVBS_IN_SOC
COMP2_PB_IN_SOC
COMP2_Y_IN_SOC
COMP2_Y_IN_SOC_SOY
COMP2_PR_IN_SOC
FULL
SCART
(18P)
SC_CVBS_IN
[CVBS_IN2]
SC_CVBS_IN_SOC
SC_R/G/B
/CVBS_IN_SOY
COMP1_PR_IN_SOC
COMP1_Y_IN_SOC
COMP1_PB_IN_SOC
COMP1_Y_IN_SOC_SOY
[PR1/Y1/PB1/SOY1_IN]
SC_L/R_IN AUAD_L/R_CH3_IN
[AUAD_L/R_CH2_IN]
AV_L/R_IN AUAD_L/R_CH2_IN
[PB2/Y2/SOY2/PR2_IN]
Tuner TU_CVBS_IN TU_CVBS_IN_SOC
[CVBS_IN1]
SIF
DIF[P/N] TUNER_SIF ADC_I_INP/INN [AAD_ADC_SIF]
[ADC_I_INP/INN]
Jack Side SOC Side
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
SPDIF_OUT
TAS5733
AZ4580MTR
OP AMP
Mute
CTRL
[TR]
LPF
AV_L/R_IN
[IEC958OUT]
Tuner
[AAD_ADC_SIF]
SCART_MUTE
SCART
AUDIO L/R OUT
I2C_SCL1/SDA1
MICOM
MICOM
[AUD_SCART_OUTL/OUTR]
SC_L/R_IN
SCART_Lout/Rout
AUD_SCK/LRCK/LRCH
pi filter
AMP_RESET_N
AMP_MUTE
HP_L/ROUT_MAIN
HEAD PHONE
& line out
SIDE_HP_MUTE
[DACSCK]
[DACLRCK]
[DACLRCH]
MAIN
WOOFER
4P wafer
2P wafer
[AUAD_L_CH1_IN]
[AUAD_L_CH2_IN]
[AUAD_L_CH3_IN]
[AUDA_OUTL]
TAS5733
H13
LG1154
[PHY0_ARC_OUT_0]
SPDIF_OUT_ARC
DTV/MNT_L/R_OUT
TUNER_SIF
[SCL0/SDA0]
LPF
LPF
TPA6138A2
Headphone
AMP LPF
LPF
[GPIO21]
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13
LG1154D
HDMI
Switch
(IC3201 / SII9587CNUC)
HDMI1
HDMI Out put 8bits
I2C_SCL/SDA 5 2bits
CEC_REMOTE
OCP
(IC3202 /
TPS2051)
MHL_DET
SPDIF_OUT_ARC
HDMI_INT
HDMI_S/W_RESET
HDMI2
CEC_REMOTE
HDMI3
CEC_REMOTE
HDMI4
CEC_REMOTE
TMDS Link 8bits
TMDS Link 8bits
TMDS Link 8bits
TMDS Link 8bits
DDC_I2C 2bits
DDC_I2C 2bits
DDC_I2C 2bits
DDC_I2C 2bits
MICOM
(IC3000 /
R5F100GEAFB)
CEC_REMOTE
SPDIF_OUT_ARC
H13 Block diagram
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

H13 Block diagram
USB2_ DP2 / DM2 USB2
USB_Camera
(구주7600 - Ready)
[USB2_0_DP / DM]
MICOM
(R5F100GEAFB)
[UART0_RXD]
[UART0_TXD]
M_REMOTE_RX / TX
M_REMOTE_CTS / RTS
[UART1_RXD / TXD]
[GPIO15 / GPIO18]
SOC_TX
H13
LG1154D
USB_CAMERA_DP / DM
USB3
USB1
(USB3.0, PVR Ready)
USB3_DP / DM
USB_DP3 / DM3
USB HUB
USB2512B-AEZG
USB2_HUB_IC_IN_DP / DM
[USB2_1_DP0 / DM0]
M_REMOTE_RESET
Motion Remote
Receiver
[GPIO13]
SOC_RX SOC_TX SOC_RX
4Pin debugging
Wafer
P3800
[USB3_DP0/DM0]
[USB3_RX0P / M]
[USB3_TX0P / M]
USB_WIFI
WIFI_DP / DM
[USB2_2_DP0 / DM0]
CAM_DET MICOM
(R5F100GEAFB)
WOL/WOW_POWER_ON
USB3_RX0P/RX0M
USB3_TX0P/TX0M
OCP USB2/3
TPS2062C
USB_CTL2
[EB_CS2/GPIO92]
USB_CTL3 +5V_USB2 +5V_USB3
OCP USB1
TPS2554
USB_CTL2
[HUB_VBUS_CTRL0] /USB_OCD1
[HUB_PORT_OVER0/1]
+5V_USB1
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Interconnection - 1
1 Main PCB
2 PSU
3 WIFI ASSY
4 BT MOTION ASSY
5 IR PCB
[PCBs]
55EA9800
1
2
5
3
4
6
6 Touch Key / Logo
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Contents of LCD TV Standard Repair Process
No. Error symptom (High category) Error symptom (Mid category) Page Remarks
1
A. Video error
No video/Normal audio 1
2 No video/No audio 2
3 Picture broken/ Freezing 3
4 Color error 4
5 Vertical/Horizontal bar, residual image,
light spot, external device color error 5
6
B. Power error
No power 6
7 Off when on, off while viewing, power
auto on/off 7
8
C. Audio error
No audio/Normal video 8
9 Wrecked audio/discontinuation/noise 9
10
D. Function error
Remote control & Local switch checking 10
MR13 operating checking 11
11
12 Wifi operating checking 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
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio Check OLED Light
On with naked eye On Y
N
Check Power
Board
24V, 12V,3.5V etc.
Normal
voltage
Y
N
Replace T-con
Board or module
And Adjust VCOM
Repair Power
Board or parts
Check Power Board 24V output
Normal
voltage Y Replace Inverter
or module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board Replace Main Board Re-enter White Balance value
※Precaution
Established
date
Standard Repair Process
Revised date 1/16
LCD TV Error
symptom A. Video error
No video/ Normal audio
☞A18☞A1
☞A18
☞A4 & A2
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,,,)
1
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Normal
voltage?
Check various
voltages of Power
Board ( 3.5V,12V,20V
or 24V…)
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N End
Standard Repair Process
A. Video error
No video/ No audio
☞A18
Established
date
Revised date 2/16
LCD TV Error
symptom
2
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

A. Video error
Picture broken/ Freezing
Y
N
☞A3
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Y Close
. 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%)
Normal
Picture? Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
Normal
Picture?
Y
Close
N
☞A4
Standard Repair Process
Established
date
Revised date 3/16
LCD TV Error
symptom
3
N
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Color
error?
Y
N
※Check
and replace
Link Cable
(EPI) and
contact
condition
Y
N
Replace Main B/D
Color
error?
Check error
color input
mode
Check color by input
-External Input
-COMPONENT
-AV
-HDMI
Y
External device
/Cable
normal
External Input/
Component
error
Check
external
device and
cable
Y
External device
/Cable
normal
HDMI
error
Check external
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
☞A6
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞A8
☞A7
Standard Repair Process
Established
date
Revised date 4/16
LCD TV Error
symptom
4
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

Screen
normal?
N
Y Check external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
N
Screen
normal? Replace Main B/D
(adjust VCOM)
Replace
module
Check color condition by input
-External Input
-Component
-HDMI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
☞A8
External device screen error-Color error
External
Input
error Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D
Screen
normal?
Check screen
condition by input
-External Input
-Component
-HDMI/DVI
Request repair for
external device
Component
error
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Replace
Main B/D
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace Main B/D
For LGD panel
Replace
Module
Screen
normal?
End
Established
date
Revised date 5/16
LCD TV Error
symptom
Standard Repair Process
☞A6 ☞A7
Check Test pattern
5
For other panel
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

B. Power error
No power
Power LED
On? Y
N
DC Power on
by pressing Power Key
On Remote control
Y
N
Normal
operation? Check Power
On ‘”High”
Check Power cord
was inserted properly
Check
Logo LED
Replace
Power
B/D
Measure voltage of each output of Power B/D
N
Y
Normal
voltage? Replace Main B/D
Y
OK?
Replace Main B/D
N
Y
Normal?
Check ST-BY 3.5V
Replace Power B/D
N
Y
Normal
voltage?
Replace Power
B/D
Y
☞A17
☞A18
☞A18
☞A18
Standard Repair Process
Established
date
Revised date 6/16
LCD TV Error
symptom
6
. Stand-By: Red or Turn Off
. Operating: Turn Off
※
Close
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

B. Power error
Off when on, off while viewing, power auto on/off
Error? N
Y
Check Power Off
Mode
Fix A/C cord & Outlet
and check each 3
phase out
Check A/C cord
Check for all 3- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal
(If Power Off mode
is not displayed)
Check Power B/D
voltage
Y
N
Replace Main B/D
Normal
voltage?
Replace Power B/D
Replace Power B/D
N
Y
Normal? End
※Caution
Check and fix exterior
of Power B/D Part
☞A19
☞A18
Established
date
Revised date 7/16
LCD TV Error
symptom
Standard Repair Process
7
Status Power off List Explanation
Normal
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_20V_DET" Power off by AC OFF
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
Abnormal "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
* Please refer to the all cases which
can be displayed on power off mode.
Abnormal
1
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

No audio
Screen normal
Check user
menu >
Speaker off Off N
Y
Cancel OFF
Check audio B+ 24
of Power Board Normal
voltage
Y
N
Replace Power Board and repair parts
Check
Speaker
disconnection
N
Y
Replace Speaker
Replace MAIN Board End
C. Audio error
No audio/ Normal video
☞A20 ☞A21+A18
Disconnection
Established
date
Revised date 8/16
LCD TV Error
symptom
Standard Repair Process
8
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only