LG OLED65W8PUA Schematic

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)
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
An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.
It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1 W), keep the resistor 10 mm away from PCB.
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.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check. Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to
0.5 mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.
Leakage Current Hot Check circuit
- 3 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conict between the
following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power source before;
a. Removing or reinstalling any component, circuit board mod-
ule or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explo­sion hazard.
2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its assemblies.
4. Unless specied otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10 % (by volume) Acetone and 90 % (by volume) isopropyl alcohol (90 % - 99 % strength)
CAUTION: This is a ammable mixture. Unless specied otherwise in this service manual, lubrication of
contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.
7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last.
8. Use with this receiver only the test xtures specied in this
service manual.
CAUTION: Do not connect the test xture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged eas­ily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some eld-effect transistors
and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component dam­age caused by static by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alter­natively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent poten­tial shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or expo­sure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classied as “anti-static” can generate electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electri­cally shorted together by conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replace­ment ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your
foot from a carpeted oor can generate static electricity suf­cient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire­bristle (0.5 inch, or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F) b. Heat the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there only until the solder ows onto and around both the compo­nent lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.
- 4 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the cir­cuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.
2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and solder it.
3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection.
Power Output, Transistor Device Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as pos­sible to diode body.
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.
3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connec­tions).
1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.
1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly con­nected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.
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
This specification is applied to the OLED TV used EA81W chassis.
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.
3. Test method
(1) Performance: LGE TV test method followed (2) Demanded other specification
- Safety : UL, CSA, CE, IEC specification
- EMC : FCC, ICES, CE, IEC specification
4. General Specification
No Item Specication 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
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
40 4096*2160 135 60.00 594 UDTV 2160P
UHD DEEP COLOUR ON
UHD DEEP COLOUR ON
- 8 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SOFTWARE UPDATE
1. USB
(1) Insert the USB memory Stick to the USB port (2) Automatically detect the SW Version and show the below
message
(3) Click [YES]: initiate the download and install of the update.
(4) Click [Check Now]: move to “About This TV” page for
update
(5) TV is updating
2. NSU
(This Function is needed to connect to the internet)
(1) Menu -> All Settings -> General -> About This TV
(2) Click [CHEK FOR UPDATES] : system check newest
version
(6) After finished the update, below Pop-up appear
(7) Click [Yes] : TV will be DC OFF -> ON (8) After TV turned on, Check the updated SW Version and
Tool Option
(3) Click [DOWNLOAD AND INSTALL] (4) TV is updating
(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
Digital Demod
IF (+/-)
OPTIC
DDR4 2133X 16
(4Gb X2EA)
Analog Demod
SYSTEM EEPROM
(256Kb)
41P
51P
eMMC
(8GB)
Micom
(RENESAS R5F100G)
DDR4 2133 X 16
(4Gb X 2EA)
P_TS
X_TAL 24MHz
\(Main Clock)
M0 M1
VBY1
USB
I2C 4
AV
D-Demod: I2C 3
REAR(V)
AMP
TI
CVBS/L/R
SPDIF OUT
I2C 1
IR
BLUTOOTH
WIFI
SUB
ASSY
IR
/KEY/LED
USB_WIFI-BT
Tuner : I2C 5
LAN
REA
R
ETHERNET
CVBS/SIF
Tuner
COMP
USB1 (2.0)
USB2 (2.0)
USB3 (2.0)
OCP 1.5A
OCP 1.5A
REA
R
OCP 1.5A
YPbPr
UART RX/TX
KEY
HDMI1 (2.0)
HDMI2 (2.0)
HDMI3 (2.0)
REA
R
(ARC)
HDMI4 (2.0)
HDMI
Sub Board
I2S
PWM
FAN1
(FAN2)
Audio AMP 2
0X56
Audio AMP 3
0X54
H/P
Line-Out
I2C 0
I2C 4
AUD_LRCH_TW
AUD_LRCH
SoC_RST
M2
DDR4 2133 X 16
(4Gb X 2EA)
LED
Audio AMP 1
0X54
Front
Woofer
Tweeter
AUD_LRCH
Component/AV Spec. out
Main IC
BLOCK DIAGRAM
- 10 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
2. Tuner
SCL5
SDA5
AAD_ADC_SIF
Tuner
[I2C_SCL_5_TU] 1
[I2C_SDA_5_TU] 2
[TU_CVBS_TU] 4
[IF_AGC_TU] 5
[TU_SIF_TU] 6
[IF[N]] 7
[IF[P]] 8
TU_CVBS
IF_AGC
CVBS_IN1
IFAGC
+3.3V_TU
1.2KΩ
Main
IC
[3.3V_TU] 3
+3.3V_TU
33 Ω
TU_SIF
DMD_TADC_INN
IF_N_TU
DMD_TADC_INP
IF_P_TU
- 11 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
3. Video & Audio IN/OUT
Main IC
AR15 [CVBS_IN2]
AV_CVBS_IN
AV1
Phone JACK
Component 1
Phone JACK
AV1_CVBS_IN_SOC
AR12 [SOY1_IN]
AT12 [Y1_IN]
AR13 [PB1_IN]
AU14 [PR1_IN]
COMP2_Pb
COMP2_Y
COMP2_Pr
COMP2_SOG2_IN_SOC
COMP2_Y_IN_SOC
COMP2_Pb_IN_SOC
COMP2_Pr_IN_SOC
AVA
Jack Side SOC Side
SPDIF_OUT
SPDIF OUT
H/P JACK
HP_LOUT_JACK
HP_ROUT_JACK
AU9 [IEC958OUT]
AR9 [AUDA_OUTL]
AT9 [AUDA_OUTR]
SPDIF_OUT_ARC
AL34 [ARC_OUT]
COMP2/AV_L_IN
COMP2/AV_R_IN
AR10 [AUAD_L_CH2_IN
AT10 [AUAD_R_CH2_IN]
AUAD_L_CH2_IN
AUAD_R_CH2_IN
HP AMP
TPA6138
ARC OUT
(HDMI2)
AMP_RESET
[SCK]
[LRCK]
[DACLRCH]
[I2C_SCL_0/SDA_0]
[GPIO17]
Component/AV Spec. out
Front Speaker
W
oofer
S
peaker
MICOM
Audio AMP
Audio AMP
AMP_MUTE
(
WOOFER_MUTE)
Audio AMP
T
weeter
S
peaker
[ DACSLRCH(I2S DATA)]
[
I2C_SCL_4/ SDA_4]
- 12 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
4. HDMI 2.0
CEC_REMOTE
MICOM
Port_4
DDC_I2C_4
HDMI_HPD_4
HDCP1.4
HDCP2.2
Main IC
HDMI 2
(2.0)_V
ARC
HDMI 1
(2.0)_V
CEC_REMOTE
Port_2
DDC_I2C_2
SPDIF_OUT_ARC
HDMI_HPD_2
CEC_REMOTE
Port_1
DDC_I2C_1
HDMI_HPD_1
HDMI2.0
LGE PHY
HDCP1.4
HDCP2.2
HDCP1.4
HDCP 2.2
HDMI2.0
LGE PHY
HDMI2.0
LGE PHY
+5V
+5V
+5V
HDMI 4
(2.0)_V
HDCP1.4
HDCP2.2
HDMI 3
(2.0)_V
CEC_REMOTE
Port_3
DDC_I2C_3
SPDIF_OUT_ARC
HDMI_HPD_3
HDMI2.0
LGE PHY
+5V
[HDMI2_1_HPD]
[HDMI2_1_SDA]
[HDMI2_1_SCL]
[HDMI2_2_HPD]
[HDMI2_2_SDA]
[HDMI2_2_SCL]
[HDMI2_3_HPD]
[HDMI2_3_SDA]
[HDMI2_3_SCL]
[HDMI2_4_HPD]
[HDMI2_4_SDA]
[HDMI2_4_SCL]
[PHY0_ARC_OUT]
- 13 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
5. USB / Wi-Fi / M-Remote / UART
IR + Wi-Fi /BT
Wafer 14P
P4005
[UART0_RXD/GPIO106]
RS232 IC
IC7200
WIFI_DP / DM
MICOM
IC3000
WOL/WIFI_POWER_ON
[USB2_2_DP0 / DM0]
SOC_RX/TX
[USB3_0_DP0/DM0]
[USB2_1_DP0 / DM0]
USB2.0_2_DP1 / DM1
USB2.0_3_DP0 / DM0
[USB2_0_DP0 / DM0]
SOC_RX/TX
UART wafer
P10001
SOC_RX/TX
USB 2
(2.0)_V
USB 3
(2.0)_V
WIFI_EN
OCP BD224G
[EB_CS0]
USB_CTL1
+5V_USB_1
OCP BD224G
[GPIO95]
USB_CTL2
+5V_USB_2
OCP BD224G
[SPI_DO1]
USB_CTL3
+5V_USB_3
[UART0_TXD/GPIO105]
Main IC
USB 2
(2.0)_V
USB2.0_1_DM0/DP1
COMBO_RESET
BT_WAKEUP_DEVICE
BT_WAKEUP_HOST
+3.5V_WIFI
Component/AV/RS232C
Spec.
out
- 14 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
6. I2C Map
33 Ω
+3.3V_NORMAL
3.3KΩ
IC102
NVRAM
3.3KΩ
+3.3V_NORMAL
33Ω
+3.3V_NORMAL
3.3KΩ
IC5400
AMP IC
100 Ω
TUNER (D emod)
(JP/EU)
2.7KΩ
+3.3V_TU
33Ω
Main IC
IC3000
MICOM
33Ω
IC6900
LNB
IR / KEY/EYE
100Ω
3.3KΩ
E
YE_SDA
E
YE_SCL
+3.5V_ST
33pF
18pF
Cap Ready
0x56
0x52
0xCA
0x10
0xA0
Device
address
I2C_SCL4: AL21[SCL4]
I2C_SDA4: AM21[SDA4]
I2C_SCL1: AM19[SCL1]
I2C_SDA1: AN19[SDA1]
I2C_SCL3: AL23[SCL3]
I2C_SDA3: AL22[SDA3]
I2C_SCL0: AL20[SCL0]
I2C_SDA0: AL19[SDA0]
I2C_SCL2: AM20[SCL2]
I2C_SDA2: AN20[SDA2]
I2C_SCL5: AN22[SCL5]
I2C_SDA5: AM22[SDA5]
Tuner
1.2KΩ
+3.3V_TU
33Ω
47pF
+3.3V_NORMAL
3.3KΩ
OLED module
P7601
(Vx1 – 51Pin Wafer, 33/34pin
38/39pin)
100 Ω
IC5300 / IC5500
AMP IC
0x54
100 Ω
33pF
0xC0
33 Ω
IC2000
DC/DC
0x3E
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
- 15 -
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
122
411
130
123
842
550
540
120
300
501
570
500
571
420
400
410
822
503
841
530
820
200T
873
871
121
510
LV2
AB4
LV1
AB3
AB2
700
880
AW5
200
- 16 -
AW3
AR2
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
1-2
AV BOX
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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.
2-1
2-2
2-2
2-2
2-1
OLED65W8 Disassembly Guide
Front View
Top View
2-1
2-1
2-1
2-1
2-1
2-2 2-2 2-2
2-2
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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
3-1
OLED65W8 Disassembly Guide
Cover, Bottom Rear
3-1 3-1
3-1
3-1 3-1
3-1
3-1
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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.
After disassemble
Cover, Bottom Rear
Ass’y, CoverTop
4-1 4-2 4-3 4-4
4-4
4-4
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(5-1) Disassemble screw 4ea that is fixing of Speaker, R (5-2) Disassemble screw 4ea that is fixing of Speaker, L
5-1 5-2
5-1
5-1
5-1
5-1
5-2
5-2
5-2
5-2
Speaker, R
Speaker, L
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
6-1
6-1
6-1
6-1
6-1
6-1 6-1
6-1
(6-1) Disassemble Screw 4EA and cable 4ea. (6-2) Disassemble Sub Main.
6-1 6-2
OLED65W8 Disassembly Guide
Sub Main
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(7-1) Disassemble cable from holder that is assembled Power Shield right side. (7-2) Disassemble Power Cable 2ea.
7-1 7-2
7-1
7-2
7-2
Power
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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
9-1
9-2
9-1
9-1
9-1
9-1
9-2
Power Bottom Shield
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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.
10-2
Power Bottom Shield
OLED65W8 Disassembly Guide
There are 2 cables connected with T-con inside this area
10-1
10-2
10-2
10-2
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(11-1) Disassemble Cable 2ea from Main PCB to T-Con PCB. (11-2) Disassemble Cable 2ea.
After disassembled
Power Bottom Shield
Main PCB
T-Con PCB
11-1
11-2
11-1 11-2
11-2
11-2
11-1
11-1
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(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.
Main PCB T-Con PCB
12-1 12-2
12-1
12-1
12-1
12-1
12-1
12-2
12-2
12-2
12-2
12-3
Gap Pad
Gap Pad
Gap Pad
After disassembled
Power Bottom Shield
OLED65W8 Disassembly Guide
12-1
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
(13-1) Disassemble cable from holder. and Disassemble cable 2ea to fixing LED Lighting.
After Disassemble
T-Con/Main PCB
Middle
LED Lighting
13-1
OLED65W8 Disassembly Guide
Copyright © 2018 LG Electronics Inc. All rights reserved. Only for training and service purposes.
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