LG 86UM8070PUA Schematic

CONFIDENTIAL

LED TV

SERVICE MANUAL

CHASSIS : UA92F

MODEL : 86UM8070PUA 86UM8070AUB

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL71404408 (1903-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 © 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.

CONTENTS

CONTENTS ..............................................................................................	2
SAFETY PRECAUTIONS ........................................................................	3
SERVICING PRECAUTIONS ...................................................................	4
SPECIFICATION .......................................................................................	6
SOFTWARE UPDATE ...........................................................................	10
BLOCK DIAGRAM .................................................................................	12
EXPLODED VIEW ..................................................................................	20
ASSEMBLY / DISASSEMBLY GUIDE....................................................	21
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 conflict 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 module 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 specified 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 flammable mixture.

Unless specified 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 fixtures specified in this service manual.

CAUTION: Do not connect the test fixture 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 field-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 classified as “anti-static” can generate electrical charges sufficient to damage ES devices.

5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient 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 floor can generate static electricity sufficient 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, suctiontype 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 flows 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 flat 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.

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.

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.

- 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 LED TV used UA92F	(1) Performance: LGE TV test method followed
chassis.	(2) Demanded other specification
	- Safety : CE, IEC specification
2. Test condition	- EMC : CE, IEC
Each part is tested as below without special appointment.
(1) Temperature: 25 °C ± 5 °C, CST: 40 °C ± 2 °C
(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 (1EA)
6	HDMI Input		UHD	HDMI 1	PC / DTV format	Side, Support 6Gbps
				HDMI 2	PC / DTV format	Side, Support 6Gbps, Support ARC
				HDMI 3	PC / DTV format	Rear, Support 6Gbps
				HDMI 4	PC / DTV format	Rear, Support 6Gbps
7	Audio Input				AV Audio / DVI Audio	AV and DVI use same jack ;
8	SPDIF out(1EA)				Optical Audio out	Rear (1EA),
9	HeadPhone				HeadPhone out
10	USB Input				EMF, DivX HD, For SVC (download)	JPEG, MP3, DivX HD

- 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	Remarks
	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	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	SXGA	Support to HDMI-PC
9	1920*1080	67.5	60	158.4	WUXGA(Reduced
					Blanking)
10	1920*1080	135	120	297
11	3840*2160	54	24	297	UDTV 2160P
12	3840*2160	56.25	25	297	UDTV 2160P
13	3840*2160	67.5	30	297	UDTV 2160P
14	3840*2160	112.5	50	594	UDTV 2160P
15	3840*2160	135	60	594	UDTV 2160P
16	3840*2160	225	100	1188	UDTV 2160P
17	3840*2160	270	120	1188	UDTV 2160P
18	4096*2160	53.95	23.97	296.7	UDTV 2160P
19	4096*2160	54	24	297	UDTV 2160P
20	4096*2160	56.25	25	297	UDTV 2160P
21	4096*2160	67.5	30	297	UDTV 2160P
22	4096*2160	112.5	50	594	UDTV 2160P
23	4096*2160	135	60	594	UDTV 2160P
24	4096*2160	225	100	1188	UDTV 2160P
25	4096*2160	270	120	1188	UDTV 2160P
26	2560*1440	88.78	60	241.5	3K
27	2560*1440	183	120	497.7	3K
28	7680*4320	107.89	23.98	1188	8K	8K Model Only
29	7680*4320	108	24	1188	8K	8K Model Only
30	7680*4320	110	25	1188	8K	8K Model Only
31	7680*4320	131.87	29.97	1188	8K	8K Model Only
32	7680*4320	132	30	1188	8K	8K Model Only
33	7680*4320	220	50	2376	8K	8K Model Only
34	7680*4320	263.74	59.94	2376	8K	8K Model Only
35	7680*4320	264	60	2376	8K	8K Model Only

- 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	Remarks
		DTV
	1	640*480	31.46	59.94	25.12	SDTV 480P
	2	640*480	31.5	60	25.12	SDTV 480P
	3	720*480	15.73	59.94	13.5	SDTV, DVD	Spec. out but display
						480I(525I)
	4	720*480	15.75	60	13.51	SDTV, DVD
						480I(525I)
	5	720*576	15.62	50	13.5	SDTV, DVD
						576I(625I) 50Hz
	6	720*480	31.47	59.94	27	SDTV 480P
	7	720*480	31.5	60	27.02	SDTV 480P
	8	720*576	31.25	50	27	SDTV 576P
	9	1280*720	44.96	59.94	74.17	HDTV 720P
	10	1280*720	45	60	74.25	HDTV 720P
	11	1280*720	37.5	50	74.25	HDTV 720P
	12	1920*1080	28.12	50	74.25	HDTV 1080I
	13	1920*1080	33.72	59.94	74.17	HDTV 1080I
	14	1920*1080	33.75	60	74.25	HDTV 1080I
	15	1920*1080	26.97	23.97	63.29	HDTV 1080P
	16	1920*1080	27	24	63.36	HDTV 1080P
	17	1920*1080	33.71	29.97	79.12	HDTV 1080P
	18	1920*1080	33.75	30	79.2	HDTV 1080P
	19	1920*1080	56.25	50	148.5	HDTV 1080P
	20	1920*1080	67.43	59.94	148.35	HDTV 1080P
	21	1920*1080	67.5	60	148.5	HDTV 1080P
	22	1920*1080	112.5	100	297	HDTV 1080P
	23	1920*1080	134.86	119.88	296.7	HDTV 1080P
	24	1920*1080	135	120	297	HDTV 1080P
	25	3840*2160	53.95	23.98	296.7	UDTV 2160P
	26	3840*2160	54	24	297	UDTV 2160P
	27	3840*2160	56.25	25	297	UDTV 2160P
	28	3840*2160	61.43	29.97	296.7	UDTV 2160P
	29	3840*2160	67.5	30	297	UDTV 2160P
	30	3840*2160	112.5	50	594	UDTV 2160P	When HDMI1,2,3,4
							UHD DEEP COLOUR
	31	3840*2160	134.86	59.94	593.4	UDTV 2160P
							ON
	32	3840*2160	135	60	594	UDTV 2160P
	33	3840*2160	225	100	1188	UDTV 2160P
	34	3840*2160	270	120	1188	UDTV 2160P
	35	4096*2160	53.95	23.98	296.7	UDTV 2160P
	36	4096*2160	54	24	297	UDTV 2160P
	37	4096*2160	56.25	25	297	UDTV 2160P
	38	4096*2160	61.43	29.97	296.7	UDTV 2160P
	39	4096*2160	67.5	30	297	UDTV 2160P

- 8 -	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	Remarks
		DTV
	40	4096*2160	112.5	50	594	UDTV 2160P	When HDMI1,2,3,4
							UHD DEEP COLOUR
	41	4096*2160	134.86	59.94	593.4	UDTV 2160P
							ON
	42	4096*2160	135	60	594	UDTV 2160P
	43	4096*2160	225	100	1188	UDTV 2160P
	44	4096*2160	270	120	1188	UDTV 2160P
	45	2560*1440	88.78	60	241.5	3K	non-standard
	46	2560*1440	183	120	497.7	3K	non-standard
	47	7680*4320	107.89	23.98	1188	8K	8K Model Only
	48	7680*4320	108	24	1188	8K	8K Model Only
	49	7680*4320	110	25	1188	8K	8K Model Only
	50	7680*4320	131.87	29.97	1188	8K	8K Model Only
	51	7680*4320	132	30	1188	8K	8K Model Only
	52	7680*4320	220	50	2376	8K	8K Model Only
	53	7680*4320	263.74	59.94	2376	8K	8K Model Only
	54	7680*4320	264	60	2376	8K	8K Model Only

- 9 -	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

(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

- 10 -	Copyright ©	LG Electronics Inc. All rights reserved.
	Only for training and service purposes.

2. NSU

(This Function is needed to connect to the internet)

(Case 1) Allow Automatic Updates Toggle Item

(1) Menu -> All Settings -> General -> About This TV

(2) Silent Update_Pop-up

When the download and install of the update is complete, the TV issues a Toast notification letting the user know that the update is complete and a reboot is required.

(3)If you want to see the update progress, go to [Menu -> All Settings -> General -> About This TV]

(4) If you want to cancel update, click (1.1) CANCEL UPDATE

(5)[NO] : Keep updating [Yes] : Cancel updating

(Case 2) NOT Allow Automatic Updates Toggle Item

(1) Menu -> All Settings -> General -> About This TV

(2)TV will automatically check for updates when every TV boots

When an updated is detected, the TV will issue an Alert letting the user know that an update is available.

(3)[Yes] : Initiate the download and install of the update [No] : Close the pop-up. The Alert will come back again when TV checks again.

(4)The following pop up window appears.

(5)[CHECK NOW] : Go to the About this TV setting page [CLOSE] : Close the pop-up

- 11 -	Copyright ©	LG Electronics Inc. All rights reserved.
	Only for training and service purposes.

.reserved rights All .Inc Electronics LG © Copyright - 12 - .purposes service and training for Only

			X_TAL		DDR3 2640	Depend on Region
	Depend on Region		24MHz		512MB
					512MB
			I2C 5	M0	DDR3 / 2640
		IF+, IF-			512MB
				M1
R		SIF			512MB
E		CVBS
A					EEPROM(NVRAM)
R	US	I_P, I_N, Q_P, Q_N		I2C 4
					(256Kb)
	P_TS(Korea / Japan / China)
					eMMC
	KR				(4GB)
	Side USB1 (2.0)	OCP	USB2_0		PMIC
	USB2 (2.0)	OCP	USB2_2
	Rear
	USB3 (2.0)	OCP	USB2_1	EPI/
			Main IC
				Vx1
				Output

Side

Rear

HDMI1 HDMI 2.0

HDMI2(ARC) HDMI 2.0 HDMI3 HDMI 2.0 HDMI4 HDMI 2.0

PHY3_RX0N

PHY2_RX0N

PHY1_RX0N PHY0_RX0N

	Depend on Region	RS232C/HP
		CVBS/COMP	YPbPr AV
		OPTIC	SPDIF OUT
		LAN	ETHERNET

I2S Out	MAIN Audio AMP
I2C 0	(NTP7519)

USB_WIFI

			SUB
			ASSY
		Sub Micom	X_TAL
	I2C 1	(RENESAS
		R5F100GEAFB)	32.768KHz

IC Main .1

DIAGRAM BLOCK

						+3.3V_NORMAL		I2C .2
				+3.3V_NORMAL	Main IC
				3.3KΩ		2.7KΩ		Depend on Region
	IC5300		100Ω	SCL0	SCL3		33Ω	IC7001
	NTP7519			SDA0	SDA3			LNB
		33pF					33Ω	TUNER(JAPAN)
				+3.3V_NORMAL
				3.3KΩ		+3.3V_NORMAL
	IC3000	33Ω		SCL1
	MICOM			SDA1
						3.3KΩ
-
- 13
					SCL4		33Ω	IC102
© Copyright training for Only								NVRAM
					SDA4
				+3.3V_NORMAL
	IC8100
	RT5094			3.3KΩ		+3.3V_TU
All .Inc Electronics LG .purposes service and				SCL2
			33Ω
				SDA2
	IC8000
						1.8KΩ
	SW50212
					SCL5	33Ω	TUNER
					SDA5
.reserved rights							47pF

.reserved rights All .Inc Electronics LG © Copyright - 14 - .purposes service and training for Only

	IC1100	PANEL
	TPS259271
		+5V_NORMAL
		+3.3V_NORMAL

+D13V

+3.5V_ST MAX3232CDR

MICOM

IR_KEY

+0.9V_DDR & C4TX

+1.8V_IO

+0.9V_CPU

+0.9V_CORE

IC2000 / 12A TPS56C215RNNR

NTP7519 Main

USB1 (2.0)		SWITCH	DCDC	LDO
USB1 (2.0)
USB2 (2.0)
CI_CAM		1.1/1.2V_DEMOD
		IC6900 / 2A	TUNER
	TJ4320GDP-ADJ
NTP7519
		IC6800 / 2A
NVRAM	TJ4320GDP-ADJ
			Main
		IC2300 / 2A
H/P AMP
	TJ4320GDP-ADJ		Source
	IC1501 / 3.5A	1.2V_DDR	DDR3
	TLV62585
	IC1502 / 1A	2.5V_VPP	DDR3
	LR1801G-ADJ
+3.5V_WOL		ETHERNET
WIFI_EN		WIFI

Main

Main

+0.9V_CPU

+0.9V_CORE

Power .3

4. Tuner

Main IC

SDA5

SCL5

+3.3V TU	1.2K		33	KR	COMON	US
+1.2V TU
Tuner	B2[+3.3V DEMOD]11	B1[+3.3V RF]3	[SCL RF] 1 [SDA RF] 2		[IF AGC] 5

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	Only for training and service purposes.

.reserved rights All .Inc Electronics LG © Copyright - 16 - .purposes service and training for Only

Main IC

Jack Side

SoC Side

JK3401

AV1_CVBS_IN_SOC

AV_CVBS_IN / AV_L_IN / AV_R_IN CVBS_IN2

COMP1_Y_IN_SOC

Y1_IN

Tuner

TU_SIF_TU, IF_P/N_TU	TU_SIF, TADC_I_INN/INP	AAD_ADC_SIF, DMD_TADC_INP, DMD_TADC_INN

In Video/Audio .5

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DDC_SCL_4

DDC_SDA_4

DDC_SCL_3

DDC_SDA_3

Main IC

DDC_SCL_2

DDC_SDA_2

PHY0_ARC_OUT

DDC_SCL_1

DDC_SDA_1

DDC_SCL_4

DDC_SDA_4 TMDS Link 8bits

DDC_SCL_3 DDC_SDA_3 TMDS Link 8bits

DDC_SCL_2

DDC_SDA_2 TMDS Link 8bits HDMI_ARC

DDC_SCL_1

DDC_SDA_1 TMDS Link 8bits

X-Tal(X3000)		RENESAS
32.768kHz		MICOM(IC3000)

* TMDS Link 8bits = TMDS DATA 6bits(DATA0,1,2)+ TMDS CLK 2bits

JK3104

HDMI4 (SIDE)

HDMI 2.0

JK3103

HDMI3 (SIDE) HDMI2.0

HDMI2 (SIDE) with ARC HDMI 2.0

JK3101

HDMI1 (SIDE)

HDMI2.0

Q3001

HDMI_CEC_MICOM

HDMI .6

REMOTE_CEC

.reserved rights All .Inc Electronics LG © Copyright - 18 - .purposes service and training for Only

Main IC

USB2.0_1_DM0

USB2.0_1_DP0

USB2.0_2_DM1

USB2.0_2_DP1

USB2.0_3_DM0

USB2.0_3_DP0

USB2_2_DM0

USB2_2_DP0

UART0_TXD/GPIO105 UART0_RXD/GPIO106

/USB_OCD2

USB_CTL 2

/USB_OCD2 USB_CTL2

/USB_OCD2 USB_CTL2

WIFI_DM

WIFI_DP

SOC_TX

SOC_RX

	USB2.0
		USB1(SIDE) +5V_USB_1		OCP
				IC4700	+5V_NORMAL
	JK4200
				BD2242G
	USB2.0
	USB2(SIDE) +5V_USB_2
				OCP	IC1600
	JK4400
				IC4501	+5V_NORMAL SYVL86A
				BD2242G	5V / 6A

USB2.0

USB3(Rear) +5V_USB_3

JK4600 OCP

IC4700 BD2242G

BT_RESET

BT_WAKEUP_DEVICE

BT_WAKEUP_HOST

IC7200 MAX3232CDR

RENESAS MICOM(IC3000)

+5V_NORMAL

WIFI Combo

UART / REMOTE-M / WIFI / USB .7

8. Vx1 41/51Pin Interface

		Main Main IC
P7601 (51p)							P7602 (41p)
	8lane					8lane
	TX					TX
		Lock In

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	Only for training and service purposes.

EXPLODED VIEW (SET)

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.

710	901
	950

400

			902
	521	HW1	570
LV2	540 HP1		411
LV1	530	HS1	500
200A	820		120

200T	700
200	A10
	AR2

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	Only for training and service purposes.

ASSEMBLY / DISASSEMBLY GUIDE

[Disassembly Guide]

(1) Lay the TV Set on a flat Pad and Remove the Stand Screw 6ea. (L:3ea / R:3ea) -> Remove the Stand Assy

: M4*30 6EA Disassemble screw

(2) Remove 1ea Screw of the Power Cord Bracket. -> Remove the Power Cord Bracket

:M3*5.5 1EA Disassemble screw				Separate the Power Cord Bracket				Remove the Power Cord Bracket Assy

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	Only for training and service purposes.

(3)Remove the B/C Screw 20ea. -> Remove the B/C

(Since there are Latches(8ea) on the upper side of B/C, you should disassemble from the bottom.)

:M3*5.5 1EA Disassemble screw

:M4*10 15EA Disassemble screw

:M8*10 4EA Disassemble screw :Latch 8ea

(4)M3*5.5 4ea Disassemble screw

(5)Detach the tape 3ea

(6)Separate connector 1ea -> Remove the Bottom Cover Bracket

			(5)	(5)
			(5)	(5)
			(5)	(5) (6)(6)
			(4)
(4)	(4)	(4)	(4)	(4)	(4)

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	Only for training and service purposes.

(7)Separate connector 10ea

(8)M3*5.5 8ea Disassemble screw -> Remove the Main and Power PCB Assy

(8)	(7)	(8)
		(7)			(8)
				(7)	(8)
		(7)	(7)	(7)
				(7)
				(7)	(8)
(8)		(8)		(8)
		(7)			(7)

(9) Remove the Speaker 2ea

b			b
a	a	a	a

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	Only for training and service purposes.

(10) M4*12 4EA Disassemble screw -> Remove the 2Pole Stand Guide Supporter(2ea) (11) Detach the Insulation Sheet 1ea

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	Only for training and service purposes.

[Assembly Guide]

(1)Attach the Insulation Sheet 1ea

(2)Place the 2Pole Stand Guide Supporter and M4*12 4EA Assemble screw

	(1)
(2)	(2)

(2)

(2)

(3) Assemble the Speaker 2ea. ( a

b )

	a		a
b	b	b	b

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	Only for training and service purposes.

(4)M3*5.5 8ea Assemble screw

(5)Attach Connector 10ea

(4)	(5)	(4)
		(5)			(4)
				(5)	(4)
		(5)	(5)	(5)
				(5)
				(5)	(4)
(4)		(4)		(4)
		(5)			(5)

(6)Attach Connector 2ea

(7)M3*5.5 7ea Assemble screw

(8)Attach the tape (5ea) and Gasket (1ea)

			(8)	(8)
			(8)	(8)
			(8)	(8) (6) (6)
			(7)
(7)	(7)	(7)	(7)	(7)	(7)

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	Only for training and service purposes.

(9)Since there are Latches(8ea) on the upper side of B/C, Assemble the Latches after cover the B/C.

(10)Assemble the B/C Screw 20ea.

:M3*5.5 1EA Disassemble screw

:M4*10 15EA Disassemble screw

:M8*10 4EA Disassemble screw :Latch 8ea

(11) Attach the Power Cord Bracket and Assemble the screw 1ea.

Attach the Power Cord Connector

Assemble the Power Cord Bracket

:M3*5.5 1EA Disassemble screw

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	Only for training and service purposes.

(12) Assemble the Stand Assy. (Assemble screw 6ea)

: M4*30 6EA Disassemble screw

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	Only for training and service purposes.

DISASSEMBLY GUIDE (MODULE)

(Step 1) Disassemble tthe Main, PSU, SPK, Wifi, IR & Stand Bracket A,B

(Step 2) Disassemble the S-PCB Cover Shield (left/right).

* Rear Sliver screw (left : 6-point / right : 6-point)

(Step 3) Reverse the LCM and disassemble the Source PCB from Holder

(Step 4) Disassemble the Case Top Screw (side) and Case Top

*top 10ea / side L 6ea / side R 6ea / down 10ea

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	Only for training and service purposes.

(Step 5) Disassemble the Panel.

* Use a tape to fix the FFC

(Step 6) 6 Disassemble the guide panel.

* 6-piece Guide Panel (Top 2ea / Side 2ea / Down 2ea)

(Step 7) Disassemble the Optical Sheet/Diffuser Plate (DS, Prism on Prism, DP)

(Step 8) Disassemble the DPS, LED Array Fixer(pin), and the Reflector

	*Rotate the DPS	* Push the LED Fixer (6ea)
	to remove (23ea)

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	Only for training and service purposes.