CONFIDENTIAL
OLED TV
SERVICE MANUAL
CHASSIS : EA81W
MODEL : OLED65W8PUA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70444213 (1803-REV00)
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
CONTENTS
CONTENTS ............................................................................................... 2
SAFETY PRECAUTIONS ......................................................................... 3
SERVICING PRECAUTIONS .................................................................... 4
SPECIFICATION ........................................................................................ 6
SOFTWARE UPDATE ............................................................................... 9
BLOCK DIAGRAM .................................................................................. 10
EXPLODED VIEW ................................................................................... 16
DISASSEMBLY GUIDE ............................................................ APPENDIX
TROUBLE SHOOTING GUIDE ................................................. APPENDIX
-2- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks. and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5 mA.
replace it with the specified. In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer.
over 1 W), keep the resistor 10 mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1 MΩ and 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
-3- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service 2. After removing an electrical assembly equipped with ES
manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as
SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or expo-
NOTE: If unforeseen circumstances create conflict between the sure of the assembly.
following servicing precautions and any of the safety precautions 3. Use only a grounded-tip soldering iron to solder or unsolder ES
on page 3 of this publication, always follow the safety precautions. devices.
Remember: Safety First. 4. Use only an anti-static type solder removal device. Some solder
removal devices not classified as “anti-static” can generate
General Servicing Precautions electrical charges sufficient to damage ES devices.
1. Always unplug the receiver AC power cord from the AC power 5. Do not use freon-propelled chemicals. These can generate
source before; electrical charges sufficient to damage ES devices.
a. Removing or reinstalling any component, circuit board mod- 6. Do not remove a replacement ES device from its protective
ule or any other receiver assembly. package until immediately before you are ready to install it.
b. Disconnecting or reconnecting any receiver electrical plug or (Most replacement ES devices are packaged with leads electri-
other electrical connection. cally shorted together by conductive foam, aluminum foil or
c. Connecting a test substitute in parallel with an electrolytic comparable conductive material).
capacitor in the receiver. 7. Immediately before removing the protective material from the
CAUTION: A wrong part substitution or incorrect polarity leads of a replacement ES device, touch the protective material
installation of electrolytic capacitors may result in an explo- to the chassis or circuit assembly into which the device will be
sion hazard. installed.
2. Test high voltage only by measuring it with an appropriate CAUTION: Be sure no power is applied to the chassis or circuit,
high voltage meter or other voltage measuring device (DVM, and observe all other safety precautions.
FETVOM, etc) equipped with a suitable high voltage probe. 8. Minimize bodily motions when handling unpackaged replace-
Do not test high voltage by "drawing an arc". ment ES devices. (Otherwise harmless motion such as the
3. Do not spray chemicals on or near this receiver or any of its brushing together of your clothes fabric or the lifting of your
assemblies. foot from a carpeted floor can generate static electricity suf-
4. Unless specified otherwise in this service manual, clean ficient to damage an ES device.)
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable General Soldering Guidelines
non-abrasive applicator; 10 % (by volume) Acetone and 90 % 1. Use a grounded-tip, low-wattage soldering iron and appropriate
(by volume) isopropyl alcohol (90 % - 99 % strength) tip size and shape that will maintain tip temperature within the
CAUTION: This is a flammable mixture. range or 500 °F to 600 °F.
Unless specified otherwise in this service manual, lubrication of 2. Use an appropriate gauge of RMA resin-core solder composed
contacts in not required. of 60 parts tin/40 parts lead.
5. Do not defeat any plug/socket B+ voltage interlocks with which 3. Keep the soldering iron tip clean and well tinned.
receivers covered by this service manual might be equipped. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
6. Do not apply AC power to this instrument and/or any of its bristle (0.5 inch, or 1.25 cm) brush with a metal handle.
electrical assemblies unless all solid-state device heat sinks are Do not use freon-propelled spray-on cleaners.
correctly installed. 5. Use the following unsoldering technique
7. Always connect the test receiver ground lead to the receiver a. Allow the soldering iron tip to reach normal temperature.
chassis ground before connecting the test receiver positive (500 °F to 600 °F)
lead. b. Heat the component lead until the solder melts.
Always remove the test receiver ground lead last. c. Quickly draw the melted solder with an anti-static, suction-
8. Use with this receiver only the test fixtures specified in this type solder removal device or with solder braid.
service manual. CAUTION: Work quickly to avoid overheating the circuit
CAUTION: Do not connect the test fixture ground strap to any board printed foil.
heat sink in this receiver. 6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
Electrostatically Sensitive (ES) Devices (500 °F to 600 °F)
Some semiconductor (solid-state) devices can be damaged eas- b. First, hold the soldering iron tip and solder the strand against
ily by static electricity. Such components commonly are called the component lead until the solder melts.
Electrostatically Sensitive (ES) Devices. Examples of typical ES c. Quickly move the soldering iron tip to the junction of the
devices are integrated circuits and some field-effect transistors component lead and the printed circuit foil, and hold it there
and semiconductor “chip” components. The following techniques only until the solder flows onto and around both the compo-
should be used to help reduce the incidence of component dam- nent lead and the foil.
age caused by static by static electricity. CAUTION: Work quickly to avoid overheating the circuit
1. Immediately before handling any semiconductor component or board printed foil.
semiconductor-equipped assembly, drain off any electrostatic d. Closely inspect the solder area and remove any excess or
charge on your body by touching a known earth ground. Alter- splashed solder with a small wire-bristle brush.
natively, obtain and wear a commercially available discharging
wrist strap device, which should be removed to prevent poten-
tial shock reasons prior to applying power to the unit under test.
-4- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
IC Remove/Replacement 3. Solder the connections.
Some chassis circuit boards have slotted holes (oblong) through CAUTION: Maintain original spacing between the replaced
which the IC leads are inserted and then bent flat against the cir- component and adjacent components and the circuit board to
cuit foil. When holes are the slotted type, the following technique prevent excessive component temperatures.
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique Circuit Board Foil Repair
as outlined in paragraphs 5 and 6 above. Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
Removal board causing the foil to separate from or "lift-off" the board. The
1. Desolder and straighten each IC lead in one operation by following guidelines and procedures should be followed whenever
gently prying up on the lead with the soldering iron tip as the this condition is encountered.
solder melts.
2. Draw away the melted solder with an anti-static suction-type At IC Connections
solder removal device (or with solder braid) before removing To repair a defective copper pattern at IC connections use the
the IC. following procedure to install a jumper wire on the copper pattern
Replacement side of the circuit board. (Use this technique only on IC connec-
1. Carefully insert the replacement IC in the circuit board. tions).
2. Carefully bend each IC lead against the circuit foil pad and
solder it. 1. Carefully remove the damaged copper pattern with a sharp
3. Clean the soldered areas with a small wire-bristle brush. knife. (Remove only as much copper as absolutely necessary).
(It is not necessary to reapply acrylic coating to the areas). 2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
"Small-Signal" Discrete Transistor 3. Bend a small "U" in one end of a small gauge jumper wire and
Removal/Replacement carefully crimp it around the IC pin. Solder the IC connection.
1. Remove the defective transistor by clipping its leads as close 4. Route the jumper wire along the path of the out-away copper
as possible to the component body. pattern and let it overlap the previously scraped end of the
2. Bend into a "U" shape the end of each of three leads remaining good copper pattern. Solder the overlapped area and clip off
on the circuit board. any excess jumper wire.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding At Other Connections
leads extending from the circuit board and crimp the "U" with Use the following technique to repair the defective copper pattern
long nose pliers to insure metal to metal contact then solder at connections other than IC Pins. This technique involves the
each connection. installation of a jumper wire on the component side of the circuit
board.
Power Output, Transistor Device
Removal/Replacement 1. Remove the defective copper pattern with a sharp knife.
1. Heat and remove all solder from around the transistor leads. Remove at least 1/4 inch of copper, to ensure that a hazardous
2. Remove the heat sink mounting screw (if so equipped). condition will not exist if the jumper wire opens.
3. Carefully remove the transistor from the heat sink of the circuit 2. Trace along the copper pattern from both sides of the pattern
board. break and locate the nearest component that is directly con-
4. Insert new transistor in the circuit board. nected to the affected copper pattern.
5. Solder each transistor lead, and clip off excess lead. 3. Connect insulated 20-gauge jumper wire from the lead of the
6. Replace heat sink. nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Diode Removal/Replacement Carefully crimp and solder the connections.
1. Remove defective diode by clipping its leads as close as pos- CAUTION: Be sure the insulated jumper wire is dressed so the
sible to diode body. it does not touch components or sharp edges.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
-5- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range 3. Test method
This specification is applied to the OLED TV used EA81W (1) Performance: LGE TV test method followed
chassis. (2) Demanded other specification
- Safety : UL, CSA, CE, IEC specification
- EMC : FCC, ICES, CE, IEC specification
2. Test condition
Each part is tested as below without special appointment.
(1) Temperature : 25 ºC ± 5 ºC(77 ± 9 ºF) , CST : 40 ºC ± 5 ºC
(2) Relative Humidity: 65 % ± 10 %
(3) Power Voltage
: Standard input voltage (AC 100-240 V~, 50/60 Hz)
* Standard Voltage of each products is marked by models.
(4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment.
4. General Specification
No Item Specification Remark
1 Market North America
2 Broadcasting system ATSC / NTSC-M, 64 & 256 QAM
3 Available Channel VHF : 02~13
UHF : 14~69
DTV : 02-69
CATV : 01~135
CADTV : 01~135
4 Receiving system Digital : ATSC, 64 & 256 QAM
Analog : NTSC-M
5 Video Input NTSC-M Rear gender(1EA)
6 HDMI Input HDMI 1 PC / DTV format B, C, E : Side, Support 6Gbps
W : Rear, Support 6Gbps
HDMI 2 PC / DTV format B, C, E : Side, Support 6Gbps, Support ARC
W : Rear, Support 6Gbps, Support ARC
HDMI 3 PC / DTV format B, C, E : Side, Support 6Gbps
W : Rear, Support 6Gbps
HDMI 4 PC / DTV format Side, Support 6Gbps
7 Audio Input AV Audio / DVI Audio Rear(AV Gender), Except Korea model
AV and DVI use same jack
8 SPDIF out(1EA) Optical Audio out Rear (1EA),
9 USB Input(3EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD
B, C, E : Side(1EA), Rear(2EA)
W : Rear(3EA)
-6- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
5. External Input Support Format
5.1. HDMI Input (PC/DTV)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed
HDMI-PC
1 640*350 31.46 70.09 25.17 EGA
2 720*400 31.46 70.08 28.32 DOS
3 640*480 31.46 59.94 25.17 VESA(VGA)
4 800*600 37.87 60.31 40 VESA(SVGA)
5 1024*768 48.36 60.00 65 VESA(XGA)
6 1360*768 47.71 60.01 84.75 VESA(WXGA)
7 1152*864 54.34 60.05 80 VESA
8 1280*1024 63.98 60.02 109.00 SXGA Support to HDMI-PC
9 1920*1080 67.5 60 158.40 WUXGA
(Reduced Blanking)
10 1920*1080 135 120 297
11 3840*2160 54 24.00 297.00 UDTV 2160P
12 3840*2160 56.25 25.00 297.00 UDTV 2160P
13 3840*2160 67.5 30.00 297.00 UDTV 2160P
14 4096*2160 53.95 23.97 296.70 UDTV 2160P
15 4096*2160 54 24 297 UDTV 2160P
-7- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed
DTV
1 640*480 31.46 59.94 25.12 SDTV 480P
2 640*480 31.5 60.00 25.12 SDTV 480P
3 720*480 15.73 59.94 13.50 SDTV, DVD 480I(525I) Spec. out but display
4 720*480 15.75 60.00 13.51 SDTV, DVD 480I(525I)
5 720*576 15.62 50.00 13.50 SDTV, DVD 576I(625I)
50Hz
6 720*480 31.47 59.94 27 SDTV 480P
7 720*480 31.5 60.00 27.02 SDTV 480P
8 720*576 31.25 50.00 27 SDTV 576P
9 1280*720 44.96 59.94 74.17 HDTV 720P
10 1280*720 45 60.00 74.25 HDTV 720P
11 1280*720 37.5 50.00 74.25 HDTV 720P
12 1920*1080 28.12 50.00 74.25 HDTV 1080I
13 1920*1080 33.72 59.94 74.17 HDTV 1080I
14 1920*1080 33.75 60.00 74.25 HDTV 1080I
15 1920*1080 26.97 23.97 63.29 HDTV 1080P
16 1920*1080 27.00 24.00 63.36 HDTV 1080P
17 1920*1080 33.71 29.97 79.120 HDTV 1080P
18 1920*1080 33.75 30.00 79.20 HDTV 1080P
19 1920*1080 56.25 50.00 148.5 HDTV 1080P
20 1920*1080 67.43 59.94 148.35 HDTV 1080P
21 1920*1080 67.5 60.00 148.50 HDTV 1080P
22 1920*1080 112.5 100 297.00 HDTV 1080P
23 1920*1080 134.86 119.88 296.70 HDTV 1080P
24 1920*1080 135.00 120 297 HDTV 1080P
25 3840*2160 53.95 23.98 296.70 UDTV 2160P
26 3840*2160 54 24.00 297.00 UDTV 2160P
27 3840*2160 56.25 25.00 297.00 UDTV 2160P
28 3840*2160 61.43 29.97 296.70 UDTV 2160P
29 3840*2160 67.5 30.00 297.00 UDTV 2160P
30 3840*2160 112.5 50.00 594 UDTV 2160P When HDMI1,2,3,4
31 3840*2160 134.86 59.94 593.40 UDTV 2160P UHD DEEP COLOUR ON
32 3840*2160 135 60.00 594 UDTV 2160P
33 4096*2160 53.95 23.98 296.70 UDTV 2160P
34 4096*2160 54 24.00 297 UDTV 2160P
35 4096*2160 56.25 25.00 297 UDTV 2160P
36 4096*2160 61.43 29.97 296.70 UDTV 2160P
37 4096*2160 67.5 30.00 297 UDTV 2160P
38 4096*2160 112.5 50.00 594 UDTV 2160P When HDMI1,2,3/4
39 4096*2160 134.86 59.94 593.40 UDTV 2160P UHD DEEP COLOUR ON
40 4096*2160 135 60.00 594 UDTV 2160P
-8- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
SOFTWARE UPDATE
1. USB 2. NSU
(1) Insert the USB memory Stick to the USB port (This Function is needed to connect to the internet)
(2) Automatically detect the SW Version and show the below
message (1) Menu -> All Settings -> General -> About This TV
(3) Click [YES]: initiate the download and install of the update.
(2) C lick [CHEK FOR UPDATES] : system check newest
version
(4) C lick [Check Now]: move to “About This TV” page for
update
(5) TV is updating
(6) After finished the update, below Pop-up appear
(3) Click [DOWNLOAD AND INSTALL]
(4) TV is updating
(7) Click [Yes] : TV will be DC OFF -> ON
(8) After TV turned on, Check the updated SW Version and
Tool Option
(5) After finished the update, below Pop-up appear
(6) Turn OFF the TV and On. Check the updated SW Version
and Tool Option
-9- Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
1. Main
X_TAL 24MHz DDR4 2133X 16
\(Main Clock) (4Gb X2EA)
Tuner DDR4 2133 X 16
Tuner : I2C 5 IF (+/-) M0 M1 (4Gb X 2EA)
R
Analog Demod
E
D-Demod : I2C 3 P_TS DDR4 2133 X 16
A Digital Demod
R M2 (4Gb X 2EA)
(V) CVBS/SIF
SYSTEM EEPROM
R USB1 (2.0) OCP 1.5A I2C 4 (256Kb)
E
A USB2 (2.0) OCP 1.5A USB Main IC
R eMMC
USB3 (2.0) OCP 1.5A (8GB)
HDMI1 (2.0) 51P
VBY1 41P
R HDMI2 (2.0)
E (ARC) HDMI
A HDMI3 (2.0) Sub Board
- 10 -
R AUD_LRCH
Audio AMP 1 Front
HDMI4 (2.0)
0X54
R UART RX/TX
E LAN ETHERNET CVBS/L/R AV AUD_LRCH Audio AMP 2 Woofer
A
R 0X56
YPbPr COMP
Copyright ©
BLOCK DIAGRAM
BLUTOOTH Component/AV Spec. out
WIFI USB_WIFI-BT AUD_LRCH_TW Tweeter
H/P Audio AMP 3
AMP 0X54
SUB LED Line-Out
TI
ASSY IR
I2S
KEY
SPDIF OUT OPTIC
IR /KEY/LED
I2C 0
SoC_RST
Only for training and service purposes.
Micom I2C 4
(RENESAS R5F100G)
I2C 1
PWM FAN1
(FAN2)
LG Electronics Inc. All rights reserved.
+3.3V_TU
Tuner 2. Tuner
[3.3V_TU] 3 +3.3V_TU
1.2KΩ
Main
SCL5
SDA5
IC
[I2C_SCL_5_TU] 1
33 Ω
[I2C_SDA_5_TU] 2
TU_CVBS
[ TU_CVBS_TU] 4 CVBS_IN1
- 11 -
IF_AGC
[IF_AGC_TU] 5 IFAGC
TU_SIF
[TU_SIF_TU] 6 AAD_ADC_SIF
IF_N_TU
[IF[N]] 7 DMD_TADC_INN
Copyright ©
IF_P_TU
[IF[P]] 8 DMD_TADC_INP
Only for training and service purposes.
LG Electronics Inc. All rights reserved.
A 1
AV
AV1 Jack Side SOC Side
ACK
Phone JACK Main IC
AV_CVBS_IN AV1_CVBS_IN_SOC
AR15 [CVBS_IN2]
Component/AV Spec. out
AR10 [AUAD_L_CH2_IN
COMP2/AV_L_IN AUAD_L_CH2_IN AT10 [AUAD_R_CH2_IN]
COMP2/AV_R_IN AUAD_R_CH2_IN
Component 1
Phone JACK COMP2_SOG2_IN_SOC
COMP2_Y_IN_SOC AR12 [SOY1_IN]
3. Video & Audio IN/OUT
COMP2_Pb_IN_SOC AT12 [Y1_IN]
COMP2_Pb AR13 [PB1_IN]
COMP2_Pr_IN_SOC
COMP2_Y AU14 [PR1_IN]
COMP2_Pr
Front Speaker
Audio AMP
[SCK]
[LRCK]
[DACLRCH]
[I2C_SCL_0/SDA_0]
- 12 -
Woofer
[GPIO17]
Speaker
Audio AMP AMP_RESET
Copyright ©
Tweeter
Speaker
[ DACSLRCH(I2S DATA)]
Audio AMP [ I2C_SCL_4/ SDA_4]
AMP_MUTE
(WOOFER_MUTE) MICOM
SPDIF OUT
SPDIF_OUT
AU9 [IEC958OUT]
Only for training and service purposes.
ARC OUT
(HDMI2) SPDIF_OUT_ARC
AL34 [ARC_OUT]
H/P JACK HP_LOUT_JACK
HP_ROUT_JACK HP AMP AR9 [AUDA_OUTL]
TPA6138 AT9 [AUDA_OUTR]
LG Electronics Inc. All rights reserved.
Main IC
MICOM
4. HDMI 2.0
CEC_REMOTE
+5V
Port_1
HDMI 1 [HDMI2_1_SDA]
DDC_I2C_1 HDMI2.0 HDCP1.4
(2.0)_V [HDMI2_1_SCL]
LGE PHY HDCP2.2
HDMI_HPD_1
[HDMI2_1_HPD]
CEC_REMOTE
+5V
HDMI 2 Port_2
[HDMI2_2_SDA]
(2.0)_V DDC_I2C_2 HDMI2.0 HDCP1.4
[HDMI2_2_SCL]
ARC LGE PHY HDCP2.2
HDMI_HPD_2
[HDMI2_2_HPD]
SPDIF_OUT_ARC
[PHY0_ARC_OUT]
- 13 -
CEC_REMOTE
+5V
Port_3
HDMI 3 [HDMI2_3_SDA]
DDC_I2C_3 HDMI2.0 HDCP1.4
(2.0)_V [HDMI2_3_SCL]
LGE PHY HDCP2.2
HDMI_HPD_3
[HDMI2_3_HPD]
Copyright ©
SPDIF_OUT_ARC
CEC_REMOTE
+5V
Port_4
HDMI 4 [HDMI2_4_SDA]
(2.0)_V DDC_I2C_4 HDMI2.0 HDCP1.4
[HDMI2_4_SCL]
LGE PHY HDCP 2.2
HDMI_HPD_4
[HDMI2_4_HPD]
Only for training and service purposes.
LG Electronics Inc. All rights reserved.
Main IC
USB2.0_1_DM0/DP1 +5V_USB_1 USB 2
[USB3_0_DP0/DM0] (2.0)_V
USB_CTL1
[EB_CS0] OCP BD224G
USB2.0_2_DP1 / DM1 +5V_USB_2 USB 2
[USB2_1_DP0 / DM0]
USB_CTL2 (2.0)_V
[GPIO95] OCP BD224G
USB2.0_3_DP0 / DM0 +5V_USB_3
[USB2_0_DP0 / DM0] USB 3
USB_CTL3 (2.0)_V
5. USB / Wi-Fi / M-Remote / UART
[SPI_DO1] OCP BD224G
IR + Wi-Fi /BT
WIFI_DP / DM
- 14 -
[USB2_2_DP0 / DM0] Wafer 14P
P4005
COMBO_RESET
BT_WAKEUP_DEVICE +3.5V_WIFI
BT_WAKEUP_HOST
Copyright ©
WIFI_EN
MICOM
IC3000 WOL/WIFI_POWER_ON
SOC_RX/TX
SOC_RX/TX UART wafer
P10001
Only for training and service purposes.
[UART0_RXD/GPIO106]
SOC_RX/TX RS232 IC
[UART0_TXD/GPIO105] IC7200
Component/AV/RS232C Spec.out
LG Electronics Inc. All rights reserved.
0x54 +3.3V_NORMAL Cap Ready
IC5300 / IC5500 100 Ω Device
6. I2C Map
AMP IC Main IC
33pF 3.3KΩ address
0x56
+3.3V_TU
I2C_SCL0: AL20[SCL0] 0x10
IC5400 100 Ω
AMP IC I2C_SDA0: AL19[SDA0]
IC6900
33pF 33Ω
LNB
2.7KΩ
0x3E 0xCA
IC2000 I2C_SCL3: AL23[SCL3] 33Ω TUNER (Demod)
DC/DC 33 Ω +3.3V_NORMAL (JP/EU)
I2C_SDA3: AL22[SDA3]
18pF
3.3KΩ
0x52 +3.3V_NORMAL
I2C_SCL1: AM19[SCL1]
IC3000 33 Ω
I2C_SDA1: AN19[SDA1]
- 15 -
MICOM
3.3KΩ
EYE_SDA 3.3KΩ +3.5V_ST 0xA0
EYE_SCL 100Ω +3.3V_NORMAL I2C_SCL4: AL21[SCL4] IC102
33Ω
NVRAM
Copyright ©
I2C_SDA4: AM21[SDA4]
IR / KEY/EYE
+3.3V_TU
3.3KΩ
I2C_SCL2: AM20[SCL2]
OLED module 100 Ω 1.2KΩ
P7601 I2C_SDA2: AN20[SDA2]
(Vx1 – 51Pin Wafer, 33/34pin 0xC0
38/39pin)
I2C_SCL5: AN22[SCL5]
Only for training and service purposes.
33Ω
I2C_SDA5: AM22[SDA5] Tuner
47pF
LG Electronics Inc. All rights reserved.
EXPLODED VIEW
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
551
552
550
400
300
420
571
120
570
540
500
501
122
411
130
123
842
200T
822
873
503
820
530
410
841
871
121
510
LV1 LV2
AB4
AB3
700
AB2
880
AW5
200
AW3
AR2
- 16 - Copyright © LG Electronics Inc. All rights reserved.
Only for training and service purposes.
DISASSEMBLY GUIDE
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
※ Follow the Manual (1-1, 1-2, 2-1, 2-2, ... )
(1-1) Put the a soft cloth and set AV BOX as indicated below picture
(1-2) Stand set as indicated below picture
1-1
AV BOX
1-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(2-1) Disassemble screw 6ea. ( Top Cover Ass’y – Middle Bottom Ass’y – Rear Cover Ass’y screw) Refer Picture.
(2-2) Disassemble screw 6ea. (Middle Bottom Ass’y – Rear Cover Ass’y screw) Refer Picture.
Top View 2-1 2-1 2-1 2-1 2-1
2-1
2-2 2-2 2-2 2-2 2-2 2-2
Front View
2-1 2-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(3-1) Disassemble Cover, Bottom Rear that is assembled with latch 8ea
Push the Cover, Bottom Rear both side and pull as indicated below picture
Cover, Bottom Rear
3-1 3-1 3-1 3-1
3-1 3-1 3-1 3-1
툭 툭
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(4-1) Lift the Ass’y, Cover Top as indicated below picture.
(4-2, 4-3) Pull the Ass’y, Cover Top and Disassemble.
If you can’t disassemble, you have to move from side to side. Then you can disassemble more easily .
(4-4) Before open the Ass’y, Cover Top , you have to disassemble cable 2ea.
Ass’y, CoverTop
After disassemble
Cover, Bottom Rear
4-1 4-2 4-3 4-4
4-4
4-4
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(5-1) Disassemble screw 4ea that is fixing of Speaker, R
(5-2) Disassemble screw 4ea that is fixing of Speaker, L
Speaker, R
Speaker, L
5-1 5-2
5-2 5-2
5-1 5-1
5-1
5-2
5-1
5-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(6-1) Disassemble Screw 4EA and cable 4ea.
(6-2) Disassemble Sub Main.
Sub Main
6-1 6-2
6-1 6-1 6-1 6-1
6-1
6-1
6-1 6-1
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(7-1) Disassemble cable from holder that is assembled Power Shield right side.
(7-2) Disassemble Power Cable 2ea.
Power
7-1 7-2
7-2
7-1
7-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(8-1) ~ (8-2) Disassemble Cable of Power Cord.
(8-3) Disassemble Power with holding end of the power PCB.
(When to do this, attend electronic shock).
Power Cord
8-1 8-2 8-3
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(9-1) ~ (9-4) Disassemble screw 7ea that is Power Bottom Shield fixing.
* (9-2) Pull the insulation sheet and Disassemble screw 1ea, Refer the below picture.
9-1 9-2 9-1 9-1
Power Bottom Shield
9-1
9-1
9-1
9-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(10-1) Lift up right side of Power Bottom Shield.
(Inside left side of Power Bottom Shield, there are 2 cables connected with T-con Board.)
(10-2) Disassemble Cable 2ea. 10-1
10-2 Power Bottom Shield
There are 2 cables connected with T-con
inside this area
10-2
10-2
10-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(11-1) Disassemble Cable 2ea from Main PCB to T-Con PCB.
(11-2) Disassemble Cable 2ea.
After disassembled T-Con PCB Main PCB
Power Bottom Shield
11-1 11-2
11-1 11-2
11-1
11-2
11-1
11-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(12-1) Disassemble screw 6ea to T-Con fixing .
(12-2) Disassemble screw 4ea to Main PCB fixing.
(12-3) Disassemble T-Con and Main PCB.
T-Con PCB Main PCB
After disassembled
Power Bottom Shield
12-1 12-2
12-1 12-1 12-1
12-2 12-2
12-2
12-1 12-1
12-1 12-2
12-3
Gap Pad
Gap Pad
Gap Pad
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(13-1) Disassemble cable from holder.
and Disassemble cable 2ea to fixing LED Lighting.
Middle
After Disassemble LED Lighting
T-Con/Main PCB
13-1
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(14-1, 14-2)Push the latch and pull the end of the right side of LED Lighting to disassemble LED Lighting.
(Latch is 4ea) Refer the below picture.
LED Lighting
14-1 14-1 14-1
14-1
Disassemble
Direction
14-1
14-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(15-1) Disassemble screw 1ea to fixing Power Cord.
Power Cord
15-1
15-1
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(16-1) Disassemble screw 10ea to fixing Middle cabinet.
(16-2) Disassemble EMI Tape 2ea from Middle to Bottom Plate.
(16-3) Disassemble Middle cabinet.
16-1
16-1
16-1 16-1 16-1 16-1
After 16-1 16-1
disassemble 16-1
Bottom Plate
LED Lighting,
Power Cord
16-1
16-1
16-2
16-3
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(17-1) Disassemble screw 1ea to fixing Joystick and disassemble Cable.
(17-2) Disassemble screw 2ea and indicator.
(17-3) Disassemble cable to connecting Wifi from Cover, Bottom and disassemble Wifi bracket.
Indicator
After Cover, Bottom
disassemble
Middle Joystick Wifi
17-1 17-2
17-2 17-2
17-1
17-3
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
(18-1) Disassemble screw 4ea to fixing Bottom Plate and disassemble Bottom Plate.
(18-2) All Disassembly is done.
After
disassemble
Joystick
Indicator
Wifi
18-1
18-1 18-1
18-1 18-1
18-2
☞ Done
Disassembly Guide
for Cover Top Assy
start from next page.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
※ Disassembly Guide for Assembly, Cover Top
(19-1) Disassemble screw (3EA) that is fixing Cable Holer.
(19-2) Disassemble screw (6EA) that is fixing Moving Ass’y (Left/Right).
19-1 19-1 19-1
Rear of Set
19-2
19-2
Front of Set 19-2 19-2
19-2 19-2
Caution!!
When removing Top Cover and
Moving Ass’y, do not hold the drive shaft
and switch by hand.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
※ Disassembly Guide for Assembly, Cover Top
(20-1) Lift up front of Moving Ass’y (Left / Right).
(20-2) Remove the Moving Ass’y (Left / Right) by pulling it towards the front.
Rear of Set
Front of Set
20-1 20-2
Rear of Set
Front of Set
※ Rib of moving Ass’y is inserted into
projection part(‘┌’shape) of Cover Top.
Rib
Rib Rib
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
※ Disassembly Guide for Assembly, Cover Top
(21-1)~(21-2) Turn the side projection of the Moving Ass’y in the direction of arrow mark.
※ Handle with care and slowly to avoid damage.
※ Do not force to the product strongly.
21-1
21-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
※ Disassembly Guide for Assembly, Cover Top
(22-1) Move the Sliding Cover Bracket to the position as picture on the right .
(22-2) Disassemble screw (4EA) that is fixing Sliding Cover.
※ Handle with care and slowly to avoid damage.
※ Do not force to the product strongly.
22-1
22-2
21-2 21-2
21-2 21-2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
OLED65W8 Disassembly Guide
※ Caution for reassembly.
■ Check assembly condition of Sliding Cover.
■ Check assembly condition of Moving Assy.
Normal Abnormal
■ When replacing the Sliding Cover or Top cover, Check that there is no color
difference between Cover Top and Sliding Cover.
Cover Top.
Sliding Cover.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
TROUBLE SHOOTING GUIDE
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Contents of Standard Repair Process
No. Error symptom (High category) Error symptom (Mid category) Page Remarks
1 No video/Normal audio 1
2 No video/No audio 2
3 Picture broken/ Freezing 3
A. Video error
4 Color error 4
Vertical/Horizontal bar, residual image,
5 5
light spot, external device color error
6 No power 6
B. Power error Off when on, off while viewing, power auto
7 7-8A,8B
on/off
8 No audio/Normal video 9
C. Audio error
9 Wrecked audio/discontinuation/noise 10
10 Remote control & Local switch checking 11
11 MR18 operating checking 12
D. Function error
12 Wifi operating checking 13
13 External device recognition error 14
14 E. Noise Circuit noise, mechanical noise 15
15 F. Exterior defect Exterior defect 16
First of all, Check whether there is SVC Bulletin in GSCS System for these model.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error A. Video error date
OLED TV symptom
No video/ Normal audio Page No 1/16
First of all, Check whether all of cables between B/D are inserted properly or not.
(Main B/D↔ Power B/D, Vx1 Cable, Speaker Cable, IR B/D Cable. etc)
☞A1 ☞A9
No video Normal Y Check Vx1 lock Y Check Power B/D Normal Y
Normal audio 0V Replace Main B/D
audio voltage (Main) voltage
20V, 12V etc.
N ☞A9 N N
Move to No Check Power B/D (Module) 24V, 12V output Repair Power B/D
video/No audio or parts
Normal Y
Replace Module
voltage
& T-CON B/D
End
N
Replace Power
B/D or repair
parts
※Precaution
☞A4 (S/W version)
☞A2 (White Balance)
Always check & record S/W Version and White
Replace Main B/D Re-enter White Balance value
Balance value before replacing the Main B/D
1
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error A. Video error date
OLED TV symptom
No video/ No audio Page No 2/16
☞A9
Check various voltages Check and
Y
No Video/ of Power B/D (Main) Normal
replace
No audio (20V, 12V…) voltage?
Main B/D
N
End
Replace Power B/D
or repair parts
2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error A. Video error date
OLED TV symptom
Picture broken/ Freezing Page No 3/16
☞ A3 . By using Digital signal level meter
. By using Diagnostics menu on OSD
Check RF Signal level ( All Settings→ Channels → Channel Tuning → Manual Tuning → Check the Signal )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Y Check whether other equipments have problem or not.
Normal
(By connecting RF Cable at other equipment)
Signal?
→ DVD Player ,Set-Top-Box, Different maker TV etc`
N
☞ A4
Check RF Cable
Normal Y Check SVC N Check Y
Connection Close
1. Reconnection Picture? S/W Version Bulletin? Tuner soldering
2. Install Booster N
Y
N
S/W Upgrade
N Contact with signal distributor
Normal
Picture? or broadcaster (Cable or Air)
Normal N
Y Picture? Replace
Main B/D
Y
Close
Close
3
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error A. Video error date
OLED TV symptom
Color error Page No 4/16
☞ A7
☞A19 ※ Check
and replace
Y Y Y
Check color by Internal Color Link Cable Color Color
Replace Main B/D Replace Module & T-CON B/D
Pattern error? (Vx1) and error? error?
contact
N condition N N
Check error End
color at input
mode
Check
External device Y
External Input external
/Cable Replace Main B/D
error device and
normal
cable
N
Request repair
for External
device/Cable
N
Check external External device Y
HDMI
device and /Cable Replace Main B/D
error
cable normal
4
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error A. Video error date
OLED TV symptom Vertical / Horizontal bar, residual image,
light spot, external device color error Page No 5/16
Vertical/Horizontal bar, residual image, light spot
Replace
Module & T-CON B/D
☞A19 ☞ A7 N
Check external
Y Y Check and
Check color by Internal Screen device Screen N Screen
Normal? replace Link Replace Main B/D
Pattern normal? connection normal? normal?
Cable
condition
N Y Y
N
Replace Main B/D or
Request repair End
Module & T-CON B/D End
for external device
External device screen error-Color error
Check screen Connect other external N
condition by input External device and cable. Screen Replace
Newest Y Check normal operation of
Check S/W Version -External Input Input normal? Main B/D or
Version? -AV External Input(AV,Component)
error Module & T-CON
-Component by connecting Jig, pattern B/D
Y
-HDMI/DVI Generator ,Set-top Box etc.
N
Request repair for
S/W Upgrade external device
Connect other external device Y
and cable. N
HDMI/ Check normal operation of Screen Replace
Normal N DVI External Input(HDMI/DVI) by normal? Main B/D or
screen? error connecting Jig, pattern Module & T-CON
Generator ,Set-top Box etc. B/D
Y
End
5
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error B. Power error date
OLED TV symptom
No power Page No 6/16
☞A8
DC Power on
Check Power LED Y Normal Y
by pressing Power Key End
Logo LED On? operation?
On Remote control
. Stand-By: Red or Turn On
N N
. Operating: Turn Off
Check Power cord
was inserted properly
☞A9
Y Measure voltage of each output
Normal? of Power B/D
N
Insert Power Cord Normal Y
Replace Main B/D
properly voltage?
N
Replace Power B/D
6
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error B. Power error date
OLED TV symptom
Off when on, off while viewing, power auto on/off Page No 7/16
Check outlet
☞A10 ☞8-A/B
N Y
Check A/C cord Check Power On/Off CPU
Error? Replace Main B/D Normal? End
Status Abnormal
N
Check for all 2- phase
power out Y Replace Power B/D
Abnormal
Fix A/C cord & Outlet
and check each 2 Check Cable
Y Replace
phase out Connection
AM_Mode Normal Module & T-CON B/D
Between Module
and AIO Box
N
Insert Cable properly
INV_Error
☞A9
(If Power On/Off
Status is not Normal Y
Replace Main B/D
displayed) voltage?
Check Power B/D
voltage
N
※ Caution
Check and fix exterior Replace Power B/D
of Power B/D Part
7
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error B. Power error date
OLED TV symptom
Off when on, off while viewing, power auto on/off Page No 8-A/16
Please refer to the all cases which can be displayed on power off mode.
Power Off list Explanation Action contents
Power off by CPU Abnormal status
1. Power off (Last Cold, Last Cool, Last Warm)
CONDITION : When power on and checking Power on Mode, abnormality appears.
POWER_OFF_BY_CPU_ABNORMAL Check & Change Main B/D
2. Power off in CPU Abnormal Case (Exception)
- Release Mode : Reboot
- Debug/Event Mode : Power off
POWER_OFF_BY_CPUCMD Power off by main SoC command. Check & Change Main B/D
Case1 : Pipe line overflow
POWER_OFF_BY_ABN Check & Change Main B/D
Case2 : reboot to suspend Fail
Power off when TV is not turned off during a certain time
RESULT : micom force to trigger TV power off.
POWER_OFF_BY_KEYTIMEOUT Check & Change Main B/D
CONDITION : When pressing power key while power on/off status, CPU does not response within 8
seconds or call the WDT timer API.
Power off by not detecting AC (abnormal case) Normal Case
POWER_OFF_BY_ACDET RESULT : micom triggers TV power off
CONDITION : Power detect port drops to low while power on status. Check & Change Main B/D
Power off by not unstable AC power detect.
RESULT : micom check the stable power.
POWER_OFF_BY_5VMNT Check & Change Main B/D
CONDITION : When AC on or DC on, stabilization check routine (Power Detect High Check) fail after
multi power on.
Power off when receiving no ack
Debug Status : Release Mode
POWER_OFF_BY_NO_POLLING RESULT : TV power off/on (Reboot) Check & Change Main B/D
CONDITION : There is no I2C response from CPU for 15 seconds.
==> if warm standby, power off occurs.
similar with POWER_OFF_BY_KEYTIMEOUT, but different concept.
RESULT : micom force to trigger TV power off within 4 seconds.
POWER_OFF_BY_REMOTE_KEY2 Check & Change Main B/D
CONDITION : When TV power on/off, CPU does not response within 4 seconds, and then pressing
power key.
Check & Change OLED Module
POWER_OFF_BY_INV_ERROR Power off by LCD Module inverter error (OLED)
& T-CON B/D
RESULT : Reboot Check & Change OLED Module
POWER_OFF_BY_ONRF_FAIL
CONDITION : OLED Module compensation is running but fails. & T-CON B/D
Check & Change OLED Module
POWER_OFF_BY_PNWASHFAIL Power off by panel noise wash function fail case. (OLED)
& T-CON B/D
Power off by resume fail when dc on case.
POWER_OFF_BY_RESUME_FAIL Check & Change Main B/D
If occur the resume fail, TV will be rebooted.
Check whether Module cable
POWER_OFF_BY_OLED_AM_MODE If the Module cable is disconnected, the micom is forced to power off TV. is connected
If still occurs , change
Module & T-CON B/D
8-A
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error B. Power error date
OLED TV symptom
Off when on, off while viewing, power auto on/off Page No 8-B/16
Please refer to the all cases which can be displayed on power off mode.
Power Off list Explanation Action contents
Power off by Micom Reset
POWER_OFF_BY_RESET It's not recommend. Please use POWER_OFF_BY_REQUEST_RESET.
RESULT : Reset the TV and init time data.
POWER_ON_BY_REMOTE_KEY Power on by remote Power Key.
POWER_OFF_BY_OFF_TIMER Power off by Off timer
POWER_OFF_BY_SLEEP_TIMER Power off by sleep timer
POWER_OFF_BY_INSTOP_KEY Power off by Instop Key
Power off by auto off function
POWER_OFF_BY_AUTO_OFF 1. When it lasts for 15 minutes that no signal and no remote key input.
2. When screen mute status lasts for 2 hours.
Power off by On timer
POWER_OFF_BY_ON_TIMER
Power off when no remote and local key input for 2 hours after power on by On timer.
POWER_OFF_BY_RS232C Power off by RS232C command
Power off by reserved recording Normal Case
POWER_OFF_BY_RESREC Power off automatically after recording finishes after TV turns on by reservation
recording from power off status.
POWER_OFF_BY_SWDOWN Power off by software download
POWER_OFF_BY_LOCAL_KEY Power off by local key
RESULT : Power off
POWER_OFF_BY_COMP_END
CONDITION : OLED threshold voltage degradation completes.
POWER_OFF_BY_HDMI_CEC Power off by HDMI CEC command
POWER_OFF_BY_PNWASHSTA
Power off for starting OLED panel noise function in warm state.
RT
POWER_OFF_BY_PNWASHDON
Power off by panel noise wash function complited. (OLED)
E
POWER_OFF_BY_COOLING Power off for cool down the OLED t-con. (OLED)
POWER_OFF_BY_EDID_WRITE Power off by EDID write done.
Off when on,
off while viewing,
8-B power auto on/off
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error C. Audio error date
OLED TV symptom
No audio/ Normal video Page No 9/16
☞A11 ☞A12
No audio
Check Sound N Check audio B+
Normal Y
menu > Normal 20V of Power B/D
Screen normal voltage
Sound Test
Y N
Check Sound out Setting Replace Power B/D and repair parts
Check Speaker N
Disconnection Replace Main B/D End
disconnection
or Sub B/D
Y
Replace Speaker
9
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error C. Audio error date
OLED TV symptom
Wrecked audio/ discontinuation/noise Page No 10/16
Abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
☞A12
Wrecked audio/
Check and replace
Discontinuation/ Normal N Check audio
speaker and
Noise for audio? B+ Voltage (20V)
connector
Check input all audio
signal Y
Signal Y
-RF
normal?
-External Input Normal
signal N voltage? Y
Wrecked audio/ End
Discontinuation/ N
Noise Replace Main B/D
for DTV or ATV
Replace Power B/D
(When RF signal is not
received) Replace Main B/D
Request repair to external Wrecked audio/ End
or Sub B/D
cable/ANT provider Discontinuation/
Noise only
for External Input
(In case of N
External Input Connect and check Normal
signal error) other external audio?
Check and fix device
external device Y
Check and fix external device
10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error D. Funtion error date
OLED TV symptom
Remote control & Local switch checking Page No 11/16
Remote control(R/C) operating error
Replace
Main B/D
☞A13
☞A13 ☞A13
Check & Repair N Y Y
Check R/C itself Normal Y Normal Check B+ 3.5V Normal Check IR Normal
operating? Cable connection operating? Voltage? Signal?
Operation On Main B/D Output signal
Connector solder
N Y N N
Check R/C Operating Check & Replace ☞A9 Repair/Replace
Close
When turn off light Baterry of R/C IR B/D
in room Check 12V on Power B/D
If R/C operate, Normal Y
operating? Close
Explain the customer
cause is interference
from light in room. N Normal Y Replace Main B/D
Voltage?
Replace R/C
N
Replace Power B/D
11
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error D. Funtion error date
OLED TV symptom
MR18 operating checking Page No 12/16
MR18 (Magic Remocon) operating error
☞A4
Check the N Check MR18
RF Receiver ver Normal Y Press the Is show ok N Turn off/on the set
INSTART menu is “00.00”? itself Operation operating? wheel message? and press the
wheel
N Y
Y
☞A14
Check & Replace
Check & Repair Battery of MR18 Close
RF assy
connection
☞A4 Normal Y
operating? Close
RF Receiver ver N Is show ok N Press the back key
is “00.00”? Close
message? about 5sec
N
Y
Y Replace
MR18
Down load the Firmware
Close
* INSTART MENU12.RF
Remocon Test Receiver
•If you conduct the loop at 3times,
Firmware download
change the MR18.
12
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error D. Funtion error date
OLED TV symptom
Wifi operating checking Page No 13/16
Wifi operating error
☞A4 ☞A14
Check the Wi-Fi Mac value N Check the Wifi wafer Normal N Replace
INSTART menu is “NG”? Pin #1 Voltage? Main B/D
Y
☞A14 Y
Check & Repair Close
Wifi cable
connection
☞A4
Wi-Fi Mac value N
is “NG”? Close
Y
Change the Wifi
assy
13
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error D. Funtion error date
OLED TV symptom
External device recognition error Page No 14/16
External device recognition error
Check technical
Check Y
Signal information Technical N External Input
input Replace Main B/D
input? - Fix information information? Recognition error
signal
- S/W Version
N Y
HDMI/
Check and fix DVI, Optical
Fix in Replace Main B/D
external device/cable Recognition error
accordance
with technical
information
14
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error E. Noise date
OLED TV symptom
Circuit noise, mechanical noise Page No 15/16
Identify Check
Circuit
noise location of Replace PSU or Main B/D
noise
type noise
Moving SPK ※ Explain to customer Mechanical noise
noise is a natural phenomenon. When
customer does not agree, replace
Moving SPK with New one.
※ Explain ‘Generated Sound’ part of
Trouble shooting in the Owner’s Manual
to the customer if needed.
15
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process
Established
Error F. Exterior defect date
OLED TV symptom
Exterior defect Page No 16/16
Zoom part with Module
Replace Module
exterior damage damage
& T-CON B/D
Remote
control Replace remote control
damage
AIO Box
Replace AIO Box
damage
16
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1 Check Vx1 lock A1
A. Video error_ No video/Normal audio
2 Check White Balance value A2
TUNER input signal strength checking
3 A3
method
A. Video error_ video error /
4 Video lag/stop Version checking method A4
5 Tuner Checking Part A5
A. Video error _Vertical/Horizontal bar,
6 Connection diagram A6
residual image, light spot
Check Link Cable (Vx1) reconnection
7 A7
A. Video error_ Color error condition
8 Adjustment OLED Test pattern - ADJ Key A19
Examples of Symptom (image error) A-1/10
Examples of Symptom (image error) A-2/10
Examples of Symptom (Main) A-3/10
Examples of Symptom (Main) A-4/10
Examples of Symptom (Main) A-5/10
9 Defected Type caused by Cable/ Main /
Module / Power Examples of Symptom (Module) A-6/10
Examples of Symptom (Module) A-7/10
Examples of Symptom (Module) A-810
Examples of Symptom (Module) A-9/10
Exchange Power B/D (PSU) A-10/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
10 Check front display LED A8
B. Power error_ No power
11 Check power input Voltage & ST-BY 3.5V A9
B. Power error_Off when on, off while
12 POWER on/off Status checking method A10
viewing
Checking method in menu when there is no
13 A11
audio
C. Audio error_ No audio/Normal video
Voltage and speaker checking method when
14 A12
there is no audio
Remode control operation checking method A13
Motion remote operation checking method A14
15 D. Function error AM_MODE(Connection Error) Alarm A20
Moving Speaker Error Alarm A21
Fan or Over Heat mode alarm A22
16 How to use the Service remote control A15-A17
17 E. Etc Check items after Main B/D replacement A18
How to use JIG
18 A23
(Power B/D Diagnostic Smart Jig Multi Gender)
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_No video/Normal audio date
OLED TV
Content Check Vx1 lock & BDP Page No A1
R7624 : 0[V]
R7624
R7632
Check a voltage of R7624 after turn on the TV. Check a voltage of R7632 after turn on the TV.
If the voltage is low, Vx1 is locked.(OK) If the voltage is high(3.3V), BDP issue.(NG)
No video/ Normal audio
A1
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_No video/Normal audio date
OLED TV
Content Check White Balance value Page No A2
Entry method
1. Press the ADJ button on the remote control for adjustment.
2. Enter into White Balance of item 12.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN B/D.
No video/ Normal audio
A2
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Video error, video lag/stop date
OLED TV
Content TUNER input signal strength checking method Page No A3
All Settings Programmes Programme Tuning & setting When the signal is strong, use the
Manual Tuning Antenna DTV attenuator (-10dB, -15dB, -20dB etc.)
Picture broken/ Freezing
A3
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Video error, video lag/stop date
OLED TV
Content OLED TV Version checking method Page No A4
Checking method for remote control for adjustment
Version
No video/ Normal audio Picture broken/ Freezing
Press the IN-START with the remote
control for adjustment
MR18 operating checking Wifi operating checking
A4
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
A. Video error_Video error, video lag/stop
OLED TV date
Content TUNER checking part Page No A5
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MainB/D.
A5
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error A. Video error _Vertical/Horizontal bar, Established
OLED TV symptom residual image, light spot date
Content Connection diagram Page No A6
As the part connecting to the external input, check the
screen condition by signal
A6
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Color error date
OLED TV
Content Check Link Cable (Vx1) reconnection condition Page No A7
Check the contact condition of the Link Cable, especially dust or mis-insertion.
Color Error
Vertical / Horizontal bar,
residual image, light spot,
A7 external device color error
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Image error) Check for poor cable contact
Symptom
Item Cause Symptom Image
Name
Pin 단선
CABLE Color smear Poor broken pin of FFC cable
Color is Excessive due to FFC Cable
CABLE R Color Excessive
Contact.
screen is dark due to poor contact due to
CABLE Screen darkness disconnection of the FFC cable pin.
G color transient due to poor FFC cable
CABLE G Color Excessive connection
A - 1/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Image error) Check for poor cable contact
Symptom
Item Cause Symptom Image
Name
CABLE Color spread LVDS cable connection problem
CABLE Color spread LVDS cable connection problem
CABLE Color spread LVDS cable connection problem
Due to foreign substance withi nLVDS cable
CABLE Screen stop PIN
A - 2/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Main Screen noise Bit noise from horizontal screen
Broken screen due to
Main Screen noise
Main IC problem
Main Dark picture Dark left-side screen
Top/bottom screen part
Main Broken picture
Picture problem due to tuner
Inner side quality problem
A - 3/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Main Broken screen Broken screen in a horizontal manner
Main Screen spread Screen corner appears blurry
Main Color Spread Color spread on the screen
Main Blurry Screen Blurry picture on the screen
A - 4/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
No problem at the initial stage,
Main Broken picture G-color spread after 10 minutes
Right-side
Main
Screen Right-side screen problem
problem
LG logo
Main Screen picture spread problem
Screen problem
No problem at the initial stage.
Right-side picture
Main During Heat run, right-side picture
problem
problem
A - 5/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Module) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Un-repairable Cases
Module Vertical bar
In this case please exchange the Module
Module image broken Source Driver issue
Module White dot White dot cause by panel issue
Module Line Dim Vertical Line cause by source drive IC
A - 6/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Module) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Module Burnt Module burnt
Module Horizon line Module has damaged
Module has damaged
Module Line Defect
Un-repairable Cases
Module Press damage
In this case please exchange the Module
A - 7/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Module) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Module Vertical bar Vertical Bar cause by source drive IC
Vertical Noise Un-repairable Cases
Module Brightness
In this case please exchange the Module
difference
Module Green light Compensation error when Power On/off
Color difference between screen cause by
Module Color difference compensation error
A - 8/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix. Examples of Symptoms(Module) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
Module has damaged
Module No image
(Can’t fix it)
Burnt
Module Burnt
(Can’t fix it)
Screen Mura
Module Mura
(Can’t fix it)
A - 9/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Appendix : Exchange Power B/D (PSU)
No Light No picture/Sound Ok
A – 10/10
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom B. Power error _No power date
OLED TV
Content Check front display Logo Page No A8
ST-BY condition: On or Off
Power ON condition: Turn Off
No power
A8
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
B. Power error _No power
OLED TV date
Content Check power input voltage and ST-BY 3.5V Page No A9
Check the DC 12VT line for ST-BY Voltage Power To
(ST-BY : 7.8V, Normal : 12V) Main
P251
P201
Power To
Module
No video/ Normal audio No video/ No audio No power Off when on, Remote control
off while viewing & Local switch checking
A9 power auto on/off
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error
symptom B. Power error _Off when on, off whiling viewing Established
date
OLED TV
Content POWER OFF MODE checking method Page No A10
Entry method
1. Press the IN-START button of the remote control for adjustment
2. Check the entry into adjustment item 3 (Power On/Off Status)
Off when on,
off while viewing,
A10 power auto on/off
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom C. Audio error_No audio/Normal video
OLED TV date
Content Checking method in menu when there is no audio Page No A11
Checking method
1. Press the Setting button on the remote control
2. Select the Sound function of the Menu
3. Select the Sound Out
4. Select Internal TV Speaker
A11 No audio/ Normal video
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom C. Audio error_No audio/Normal video date
OLED TV
Content Voltage and speaker checking method A12
Page No
when there is no audio
22Pin(Power B/D ↔ Main B/D)
1 DRV 2 DPC
1 20V 2 20V
3 GND 4 GND
3 20V 4 GND
5 20V 6 20V
5 GND 6 GND
7 12V 8 12V
7 12V 8 GND
9 GND 10 12V
11 POWER ON 12 AC/DCT
13 GND 14 NC
15 GND 16 POWER CTL
17 12V 18 NC
19 GND 20 NC 1 SPK_R- 2 SPK_R+_
21 Detect ready 22 20V 3 SPK_L- 4 SPK_L+
5 SPK_R-WF 6 SPK_R+_WF
7 SPK_L-_WF 8 SPK_L+_WF
Checking order when there is no audio
Check the contact condition of or 20V connector of Sub B/D
Measure the 20V input voltage supplied from Power B/D
(If there is no input voltage, remove and check the connector) Wrecked audio/
discontinuation/noise
Connect the tester RX1 to the speaker terminal and if you hear the “Chik Chik” sound when you
touch the GND and output terminal, the speaker is normal.
A12 No audio/ Normal video
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
OLED TV
Content Remote control operation checking method Page No A13
P4000
1 GND 2 KEY1
3 KEY2 4 GND
5 GND 6 BLUE
7 +5V 8 +3.5V
Check IR cable condition between IR & Main B/D. 9 GND 10 RED
Check the st-by 3.5V on the terminal 8 on P4000 11 GREEN 12 GND
13 EYE_SCL 14 EYE_SDA
15 GND 16 IR
17 N.C. 18 N.C.
Remote control
& Local switch checking
A13
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
OLED TV
Content Motion Remote operation checking method Page No A14
Wifi & BT Front
Wifi & BT Rear
P4006
WIFI 1 3.5V_WIFI
2 WIFI_DM
3 WIFI_DP
4 GND
5 WOL/WIFI_POWER_ON
6 3.5V_WIFI
7 COMBO_RESET
8 GND
9 BT_WAKEUP_DEVICE
Check IR cable condition between IR & Main B/D.
Check WIFI Combo cable condition between WIFI Combo Assy & Main B/D. 10 BT_WAKEUP_HOST
Check the 3.5V_WIFI P4006 on the terminal 1 & 6
MR18 operating checking Wifi operating checking
A14
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E. ETC date
OLED TV
Content How to use the Service remote control Page No A15
How to access the remote control
0 4 1 3
0 4 1 3
A15
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E. ETC date
OLED TV
Content How to use the Service remote control Page No A16
Remote control part definition
POWER Power On/Off
[ETC] Each time pressing the KEY button, Mode gets changed to ETC and P-ONLY each time
ETC (Added Function) All KEY function [PIP PR-][PIP PR+][SWAP]
[PIP INPUT][DVI] KEY Function
Changed to factory mode
P-ONLY (Added
Function)
All KEY function &[INFO][STILL][HDMI HOT][USB HOT][HDMI4] KEY Action
INPUT Change to the external device mode
ARC Change in the order of 16:9=>Zoom1=>Zoom2=>Cinema Zoom=>Aucto Screen=>4:3=>16:9
Changes in the order of Bright Picture=>Easy Picture=>Cinema=>Spots=>Game=>
PSM
Custom PIcture1=>Custom Picture2=>Bright Picture
SSM (Added Function) Standard(user)=>music=>cinema=>sports=>game=>standard(user)
PIP Picture In Picture is activated
TEXT Access to the Power Only mode
CAP Broadcasting caption(on/off)
MPX Stereo mode (mono, stereo, foreign language) access
Used when in factory mode
Simplink (Added
Access to the Simplink-connected device
Function)
Digital EYE function ON/OFF
EYE
For some Model, access to the Test Pattern
TILT Used for screen tilting change (Access to the old PDP control mode)
A16
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E. ETC date
OLED TV
Content How to use the Service remote control Page No A17
B-TOOTH
Connected to Blue-Tooth
(Added function)
Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex)
IN-START V03.11.0 Current S/W version
MICOM Version ex) V3.05.0 current Mi-Com version UTT ex) User TV total usage time
POWER OFF STATUS ex) Shows power-off status
ADJ
Test Pattern (Off=>White=>Red=>Green=>Blue=>Black=>Pattern=>Off) Change
X-STUDIO (Added function) HDD,USB, external device’s HDD screen is activated
MENU User function gets activated
EXIT Exit from the current mode
TIME SHIFT (Added
Moves forward/backward of recorded contents
function)
MUTE Mute function (0 Volume)
IN-STOP SET to factory mode
VOL + - Volume Up/Down
CH + - Channel Up/Down
AV1,2,3 (Added function) Connects to external input 1,2,3
COMP1,2 (Added function) Connects to Component 1,2
HDMI1,2,3,4
Connects to HDMI 1,2,3,4
(Add function)
DVI (Add function) Connects to DVI
A17
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E. ETC date
OLED TV
Content Check items after Main B/D replacement Page No A18
Check items afer Main B/D(Model Number D/L, White Balance)
Press the Service remote control instart Key.
No.7 Select Model Number D/L
- Key in the model name and serial number
after checking the ID label on the back cover.
Press the Service remote control ADJ Key.
No.13 Select White Balance
- Record the R, G, B (GAIN, Cut) value of the
color temperature before main B/D replacement.
After replacing the main B/D, key in the
A14 recorded value.
A18
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
A. Video error_Color error
OLED TV date
Content Adjustment OLED Test pattern Page No A19
1
2
1st 2nd 3rd 4th
5th 6th 7th 8th
9th 10th 11th
Press the P-ONLY HDMI HOT CH + or -
Color Error
You can view 11 types of patterns using the CH+ or - key
Checking item : 1. Defective pixel 2. Residual image 3. Module error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of Module or Main-B/D!) Vertical / Horizontal bar,
residual image, light spot,
A19 external device color error
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
OLED TV
Content Abnormal Case. Page No A20
AM_MODE(Connection Error) Alarm – Blinking Orange Color LED
① ③
②
④
Checking order
1. Check LED Color Orange
2. Unplug the power cord
3. Reconnect Cable to AV Box(or Extension Cable)
4. Plug the power cord
A20
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
OLED TV
Content Abnormal Case. Page No A21
Moving Speaker Error Alarm – Blinking Magenta Color LED
Up/Down
Motor
①
②
③
Door S/W
Door
Motor
Up/Down
S/W
Checking order
1. Check LED Color Magenta
2. Check MOTOR 24V (Q10101 or L10102)
3. Check Door 12V (L5104)
4. Check DET SW broken or not.
5. Check Motor
6. Replace each part or Cover Top Assy.
A21
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
OLED TV
Content Abnormal Case. Page No A22
FAN or Overheat mode Alarm – Blinking Blue Color LED
2-1 Poweronly
①
2-2 Instart >13.OLED
③
2nd FAN 1st FAN
Checking order
1. Check LED color Blue Temp.
2. Check FAN Stauts (Poweronly mode or Instart > OLED) Sensor
3. Replace FAN or Temperature Sensor.
A22
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Smart JIG Power Diagnosis
Muitl Gender Guide
(P/N : RAD32507801) (P/N : RAD33187801)
A23
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Power Board Muitl Gender JIG Diagram (P/N: RAD33187801)
15Y 16Y 15Y
(LF/UF Series) (OLED B6) (OLED)
28Pin 24Pin 24Pin 24Pin NC
18 Marking check 24Pin
18Pin 16Y
New JIG (OLED)
24Pin
13Y/14Y 28Pin
No Marking
OLD JIG
17/18Y
W7 17Y/18Y
B8 (OLED)
24Pin 12Y C8
E8 24Pin
18Y
G8
32LK61/32LK62
W8
43/49LK61
18Y
18Y
UK63/UK64
SK80/UK89
UK65/UK7050
SK85/SK96
SK95/SK99 16Y/17Y/18Y
18Pin (UH/UJ/UK
18Y SK)
24 Marking Check 28Pin UK74
28Pin 12Pin 12Pin 28Pin
UK75
Cable Connection UK77
Includes 49UJ63 UK78
17Y/18Y 16/18Y 16Y/17Y/18Y 16Y/17Y 16Y SK79
(SJ/UJ/UK/SK) (UH/UK) (LH/LJ/LK) (UH/SJ) (UH)
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Power Board Muitl Gender JIG Diagnostic model List
Existing 12Y, 13Y, 14Y, 15Y LED models included
15Y, 16Y, 17Y/18Y OLED, 16/17/18 Y LED model Power diagnosis function newly added
<15Y/16Y/17Y/18Y OLED Model, 16Y/17Y/18Y LED Model>
Year Product Model
EG92/EG93/EG94
‘15 OLED EG96
EF95
B6, C6
OLED
E6, G6
UH95/UH96
‘16 UH85/UH93
UH77/UH87
LED
UH75/UH76
UH65/UH68
LH68, LH66, LH60,LH54
B7, C7
‘17 OLED E7, G7
W7
SJ95/UJ98
SJ85/UJ94
SJ80, UJ77
UJ75/UJ78
’17 LED
UJ65/UJ68
UJ63/UJ67
LJ61/LJ68
LJ55/LJ58
SK80/SK85/SK95
UK78/UK75/UK77/SK79
‘18 LED
UK63/UK64/UK65/UK7050
32LK61/62, 43/49LK61
B8, C8, E8
‘18 OLED
G8, W8
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Power Board Muitl Gender How to Connect
1
▶ Power Board Muitl Gender JIG
2
“A: 2013 LCD POWER”
2014
▶ Connect the Muiti Gender to the connector (black)
as shown in picture 2 of the Smart JIG.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Smart Jig Voltage Setting
1 2
▶ Switch the product S/W in JIG to LCD.
▶ LCD MODEL Check the power voltage
▶ Check power board voltage. and switch to the correct voltage.
※ Note on set up
(The correct power diagnosis can be made only if it is set correctly.)
- 24V Power Board : Change the switch to 24V of Smart Jig Voltage
- 20V Power Board : Change the switch to 24V of Smart Jig Voltage
- 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage
Power B/D Smart Jig Voltage Switch
24V 24V
20V 20V
13.2V/18V 24V
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (1)
1 2
▶ Switch the product S/W in JIG to LCD.
▶ LCD MODEL Check the power voltage
and switch(24V) to the correct voltage.
▶ Check power board voltage. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector to the Muitl
Gender JIG 24Pin connector
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (2)
5 6
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y OLED(B6) Power Board Diagnostic method
1 2
▶ Switch the LCD MODEL S/W to 24V by checking
the power voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
▶ Connect the 24Pin Power Cable connector
to the Multi gender JIG 24Pin connector.
3
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y OLED(C6) Power Board Diagnostic method
1 2
▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector.
▶ Smart JIG: Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 24Pin connector
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y OLED(E6) Power Board Diagnostic method
1 2
▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y OLED(G6) Power Board Diagnostic method
1 2
▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`17Y OLED(B7/C7/E7/G7) Power Board Diagnostic method
1 2
▶ Disconnect the Main Board 28Pin Power Cable connector. ▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
3 4
▶ Switch the LCD MODEL S/W to 20V by checking ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
the power voltage.
▶ When the NG LED turns on, the Power Board
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`17Y OLED(W7) Power Board Diagnostic method
1 2
▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
3 4
▶ Switch the LCD MODEL S/W to 20V by checking ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
the power voltage.
▶ When the NG LED turns on, the Power Board
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y/`17Y LED 18Pin Power Board Diagnostic method
1 2
▶ Check power board voltage.
▶ Disconnect the Main Board 18Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 18Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y LED(UH95/UH96) Power Board Diagnostic method
1 2
▶ Check power board voltage. ▶ Disconnect the Main Board 28Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 28Pin Power Cable connector ▶ When the OK(24V,12V) LED turns on, Power Board is normal.
to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y/`17Y LED(UH85/UH93) Power Board Diagnostic method
1 2
▶ Check power board voltage. ▶ Disconnect the Main Board 28Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 28Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y/`17Y LED 12Pin Power Board Diagnostic method
1 2
▶ Check power board voltage.
▶ Disconnect the Main Board 12Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 12Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 12Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`16Y LED 12Pin Power Board Diagnostic method
1 2
▶ Check power board voltage.
▶ Disconnect the Main Board 12Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3 4
▶ Connect the 12Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
`17Y LED 28Pin Power Board Diagnostic method
1 2
▶ Check power board voltage.
▶ Disconnect the Main Board 28Pin Power Cable connector.
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
3 4
▶ Connect the 28Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal.
to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
