LG OLED55B3, OLED65B3 Service Manual

OLED TV

SERVICE MANUAL

CHASSIS : E*32B

MODEL : OLED55B3***

OLED65B3***

CAUTION

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

P/NO : MFL71991231 (2301-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.

CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ........................................................................ 3

SERVICING PRECAUTIONS ................................................................... 4

SPECIFICATION ...................................................................................... 6

SOFTWARE UPDATE ............................................................................ 12

BLOCK DIAGRAM ................................................................................. 14

EXPLODED VIEW .................................................................................. 15

WIRING DIAGRAM ................................................................................ 16

ASSEMBLY / DISASSEMBLY GUIDE .................................................... 17

TROUBLE SHOOTING GUIDE ................................................ APPENDIX

- 2 -

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 -

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

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 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-e󰀨ect 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 o󰀨 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 sol-

der removal devices not classied as “anti-static” can generate electrical charges su󰀩cient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate

electrical charges su󰀩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 -

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 h t 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 o󰀨 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-o󰀨" 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 o󰀨

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 con-

nected to the a󰀨ected 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 -

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement

.

1. Application range

This specification is applied to the LED TV used E*32B chassis.

3. Test method

(1) Performance: LGE TV test method followed (2) Demanded other specification

- Safety : CE, IEC specification

- EMC : CE, IEC specification

2. Requirement for Test

Each part is tested as below without special notice. (1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 2 °C (2) Relative Humidity: 60 % ± 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 20 minutes prior

to the adjustment.

4. Model General Specification

(1)

EU / CIS / AFRICA / OCEANIA / ASIA / CHINA / HONGKONG / PHILIPPINES

No. Item Specication Remarks

1) EU/CIS/AFRICA

1 Market

2) OCEANIA/ASIA

3) CHINA/HONGKONG

4) PHILIPPINES

1) EU/CIS/AFRICA

- Digital TV : DVB-T/T2, DVB-C, DVB-S/S2,

- Analogue TV : PAL B/B, PAL B/G, PAL D/K, PAL-I, SECAM B/G, SECAM D/K, NTSC-M

2 Broadcasting system

2) OCEANIA/ASIA

- Digital TV : DVB-T/T2, DVB-C, DVB-S/

S2(New zealand only)

- Analogue TV : PAL B/B, PAL B/G, PAL D/K, PAL-I, SECAM B/G, SECAM D/K, NTSC-M

3) China/Hongkong

- Digital TV : DTMB (China/Hongkong), DVB-C

(China)

- Analogue TV : PAL D/K,I, NTSC-M (China/

Hongkong)

4) Philliphine

- Digital TV : ISDB-T

- Analogue TV : NTSC-M

Depending on country

- 6 -

No. Item Specication Remarks

# FOR EU/CIS/AFRICA/OCEANIA/ASIA 1 ) Digital TV

-DVB-T / DVB-T2*

-VHF III : 174 ~ 230 MHz

-UHF IV : 470 ~ 606 MHz

-UHF V : 606 ~ 862 MHz

-S Band II : 230 ~ 300 MHz

-S Band III : 300 ~ 470 MHz

-DVB-S/S2* (950 ~ 2150 MHz)

-DVB-C* (46 ~ 890 MHz)

2) Analogue TV (46 ~ 862 MHz)

3 Program coverage

4 Receiving system

# FOR CHINA

1) PAL-DK:VHF/UHF 1~62, Cable:1~41

2) PAL-I: VHF/UHF 1~69, Cable:1~47

3) NTSC M: VHF/UHF 2~78, Cable:1~71

4) DTMB:1~62

5) DVB-C:52.5MHz~866MHz

# FOR HONGKONG

1) PAL-DK:VHF/UHF 1~69, Cable:1~47

2) PAL-I: VHF/UHF 1~69, Cable:1~47

3) NTSC M: VHF/UHF 2~78, Cable:1~71

4) DTMB:21~69

# FOR Philippine

1) ISDB-T: UHF : 2~69

2) NTSC M: VHF/UHF : 2~69, CATV: 1~135

# EU/CIS/AFRICA/OCEANIA/ASIA Analog : Upper Heterodyne Digital : COFDM(DVB-T) Only DVB-T Model Digital : COFDM(DVB-T/T2) Only DVB-T2 Model Digital : QAM

# China/Hongkong Analog : Upper Heterodyne Digital : COFDM, QAM

# EU/CIS : Depending on models. # AFRICA : Depending on countrys. # OCEANIA/ASIA : Only DVB-T2/C/S2 support model only. # China/Hongkong/Philippine separate marketing

# EU/CIS/AFRICA/OCEANIA/ASIA

► DVB-T

- Guard Interval(Bitrate_Mbit/s): 1/4, 1/8, 1/16, 1/32

- Modulation: Code Rate QPSK : 1/2, 2/3, 3/4, 5/6, 7/8 16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8 64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8

► DVB-T2

- Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256,

- Modulation : Code Rate QPSK : 1/2, 2/5, 2/3, 3/4, 5/6 16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6

► DVB-C

- Symbolrate: 4.0Msymbols/s to 7.2Msymbols/s

- Modulation: 16QAM, 64-QAM, 128-QAM and 256-QAM

► DVB-S/S2(Except Asia)

- Symbolrate DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s DVB-S (QPSK) : 2 ~ 45Msymbol/s

- Viterbi DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8 DVB-S2 mode: 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10

#China/Hongkong

► DTMB (Carrier, Code Rate, Constellation, Frame Header, Interleaving)

* China

- MODE1 : 3780, 0.4, 16QAM, PN945/VARIABLE, 720

- MODE2 : 1, 0.8, 4QAM, PN595, 720

- MODE3 : 3780, 0.6, 16QAM, PN945/VARIABLE, 720

- MODE4 : 1, 0.8, 16QAM, PN595, 720

- MODE5 : 3780, 0.8, 16QAM, PN420/VARIABLE, 720

- MODE6 : 3780, 0.6, 64QAM, PN420/VARIABLE, 720

- MODE7 : 1, 0.8, 32QAM, PN595, 720

- MODE8 : 3780, 0.8, 16QAM, PN945/VARIABLE, 720

- MODE9 : 3780, 0.6, 64QAM, PN945/VARIABLE, 720

- MODE10 : 3780, 0.8, 64QAM, PN420/VARIABLE, 720 * Hong Kong - 3780, 0.4/0.6, 4/16/64QAM, PN945, 720

► DVB-C

- Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s

- Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM

- 7 -

No. Item Specication Remarks

5 Head Phone out

HDMI1

HDMI

6

Input

7 Video Input RCA PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60

8 Audio Input DVI Audio, Component, AV

9 SPDIF out (1 EA) Optical Audio out

10 USB Input (3 EA) EMF, For SVC (download)

Ethernet Connect

11

(1EA)

PCMCIA Card slot

12

(1EA)

HDMI2

HDMI3

HDMI4

Antenna, HDMI1, HDMI2, HDMI3, HDMI4 USB1, USB2, USB3, AV

PC / DTV Format Support HDMI2.1

PCMCIA Slot only EU/CIS

Depending on country

STP cable

(2) North America / Central and South America / Colombia / Taiwan / Mexico

No. Item Specication Remarks

1 Market

2 Broadcasting system

3 Available Channel

North America / Central and South America / Colombia / Taiwan / Japan / Mexico

ATSC / NTSC-M, 64 & 256 QAM North America

Digital : SBTVD (ISDBT) Analog : NTSC / PAL-M / PAL-N

Digital : DVB-T / T2 Analog : NTSC / PAL-M / PAL-N

Digital : ATSC, 64 & 256 QAM Analog : NTSC-M

Digital : DVB-T Analog : NTSC-M

VHF 2 ~ 13

UHF 14 ~ 69

DTV 2 ~ 69

CATV 1 ~ 135

CADTV 1 ~ 135

VHF 2 ~ 13

UHF 14 ~ 69

DTV 2 ~ 69

CATV 1 ~ 135

VHF 2 ~ 13

UHF 14 ~ 69

DTV 2 ~ 69

CATV 1 ~ 125

Cenrtal and South America

Colombia / Panama

Mexico

Taiwan

North America / Mexico

Cenrtal and South America

Colombia / Panama / Taiwan

- 8 -

No. Item Specication Remarks

Digital : ATSC, 64 & 256 QAM Analog : NTSC-M

Digital : SBTVD (ISDBT) Analog : NTSC / PAL-M / PAL-N

Digital : DVB-T Analog : NTSC / PAL-M / PAL-N

4 Receiving system

Digital : DVB-T2 Analog : NTSC / PAL-M / PAL-N

HDMI 1

5 HDMI Input

6 Audio out

7 USB Input (3EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD

8 Ethernet Connect (1EA) Ethernet Connect

HDMI 2

HDMI 3

HDMI 4

SPDIF(1EA) Optical Audio out

HeadPhone(1EA) HeadPhone out

PC / DTV Format Support HDMI2.1

for North America / Mexico model

for Central and South America model

for Panama and Taiwan

► DVB-T

- Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32

- Modulation : Code Rate QPSK/16-QAM/64-QAM

- Code Rate 1/2, 2/3, 3/4, 5/6, 7/8

for Colombia

► DVB-T2

- Guard Interval(Bitrate_Mbit/s) 1/4, 19/256, 1/8, 1/16, 1/32, 1/128

- Modulation QPSK, 16-QAM, 64-QAM, 256QAM

- Code Rate 1/2, 3/5, 2/3, 3/4, 4/5, 5/6

- 9 -

5. External Input Support Format

5.1. HDMI input(DTV)

No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks

1 640*480 31.46 59.94 25.125 SDTV 480P

2 640*480 31.50 60.00 25.125 SDTV 480P

3 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I)

Spec. out but display4 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I)

5 720*576 15.62 50.00 13.500 SDTV, DVD 576I(625I) 50Hz

6 720*480 31.47 59.94 27 SDTV 480P

7 720*480 31.50 60.00 27.027 SDTV 480P

8 720*576 31.25 50.00 27 SDTV 576P

9 1280*720 37.5 50.00 74.25 HDTV 720P

10 1280*720 44.96 59.94 74.176 HDTV 720P

11 1280*720 45.00 60.00 74.25 HDTV 720P

12 1920*1080 33.72 59.94 74.176 HDTV 1080I

13 1920*1080 33.75 60.00 74.25 HDTV 1080I

14 1920*1080 28.12 50.00 74.25 HDTV 1080I

15 1920*1080 26.97 23.97 63.296 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 59.94 148.350 HDTV 1080P

21 1920*1080 67.50 60.00 148.50 HDTV 1080P

22 1920*1080 135.00 120.00 HDTV 1080P

23 1920*1080 134.86 119.88 HDTV 1080P

24 1920*1080 112.50 100.00 HDTV 1080P

25 3840*2160 53.95 23.98 296.703 UDTV 2160P

26 3840*2160 54.00 24.00 297.00 UDTV 2160P

27 3840*2160 56.25 25.00 297.00 UDTV 2160P

28 3840*2160 61.43 29.97 296.703 UDTV 2160P

29 3840*2160 67.50 30.00 297.00 UDTV 2160P

30 3840*2160 112.5 50.00 594 UDTV 2160P

31 3840*2160 134.86 59.94 593.407 UDTV 2160P

32 3840*2160 135.00 60.00 594 UDTV 2160P

33 4096*2160 53.95 23.98 296.703 UDTV 2160P

34 4096*2160 54.00 24.00 297 UDTV 2160P

35 4096*2160 56.25 25.00 297 UDTV 2160P

36 4096*2160 61.43 29.97 296.703 UDTV 2160P

37 4096*2160 67.50 30.00 297 UDTV 2160P

38 4096*2160 112.50 50.00 594 UDTV 2160P

39 4096*2160 134.86 59.94 593.407 UDTV 2160P

40 4096*2160 135.00 60.00 594 UDTV 2160P

When HDMI UHD DEEP COLOUR ON

- 10 -

5.2. HDMI Input (PC)

No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks

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 1152*864 54.34 60.05 80 VESA

7 1360*768 47.71 60.01 84.75 VESA(WXGA)

8 1280*1024 63.98 60.02 109.00 SXGA Support to HDMI-PC

9 1920*1080 67.50 60.00 158.40 WUXGA(Reduced Blanking)

10 1920*1080 135 120

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 23.97 296.703 UDTV 2160P

15 4096*2160 54 24 297 UDTV 2160P

- 11 -

SOFTWARE UPDATE

1. USB DOWNLOAD

(1) Plug in the USB to the TV (2) If there are update-able files in the USB, the TV would ask

that the user want to process the SW upper version update.

(3) Click “Yes” button : Start Update

2. NSU DOWNLOAD

(This Function is needed to connect to the internet.)

Case 1) Auto Update On

(1) Go to Menu → All Settings → Support → Software

Update, then check Auto update is turned on.

(2) After the update complete, the user can check a pop-up

below the picture, which indicated update is complete and the new version will be applied after the TV turn off and on.

(4) Click “Check Now” : Go to SW Update menu for monitoring (5) TV has been starting SW update

(6) After finishing the update, it will show a pop-up below the

picture.

(3) If the user want to check the process of updating

[Menu → All Settings → Support → Software Update]

.

(7) Click “Yes” : Tv will be turn off and on itself

- 12 -

(4) If it needs to cancel the update, click “cancel update” button

(5) [“No”] : update continue [“Yes”] : update cancel

Case 2) NOT Allow Automatic Updates

Toggle Item

(1) Go to Menu → All Settings → Support → Software Update

(4) If the user started the update, the TV shows a pop-up

below the picture.

(5) [CHECK NOW] : Just start the update

[Close] : Close the pop-up

(2) If it found upper version SW than the TV SW version, TV

would show a pop-up like below the picture.

“The latest version of the SW is available for your TV. Do

you want to update now”

(3) [Yes] : update starts.

[No] : Close the pop-up, check out later

- 13 -

H

-

V

BLOCK DIAGRAM

13

20V

1.8V

3.3V

From

Power

B/D

NIM tuner

IF (+/-)

1.2V_Demod

3.3V

TUNER

(Full NIM ONLY)

TUNER

5V

CI Slot

3.5V_ST

USB1 (2.0)

USB2 (2.0)

eMMC (16GB)

NVRAM (256Kb)

HDMI1(2.0)

HDMI2(2.0)

HDMI4(2.1)

HDMI3(2.1, eARC)

(T2/C/A)

(S,S2)

Air/

T2/C/S/S2 HH-

Cable

DVB-S

Area OPT

(Depend on region)

1.8V

1.2V_Vterm

2.5V

1.2V_DDR

1.0V

3.3V

1.2V

3.3V

DDR4_

3.5V_ST

1.2V

3.5V_ST

1.0V

13V

X_TAL

1.8V

Vterm

VPP

DDR

CPU

13V

LNB

Area OPT

(Depend on region)

P_TS_IN

P_TS_OUT

IQ (+/-), IP(+/-)

5V

OCP

27MHz

IF

TS

3.5V_ST

1.8V

3.3V

1.0V

0.95V

5V

3.3V

2.5V

5V

13V

3.3V

13V

64bit (16bit x 4)

(512MB X 4EA)

DDR4 2666

1.2V_DDR

Normal

13V(PANEL_VCC)

EPI /CEDS block

I2C_5

Main

Sub

GST/MCLK/GCLK/EO/I2C_3

PMIC

eMMC

CLK/DATA/STRB

MICOM

1.2V_Vterm

Main SoC

Vx1 / EPI/ CEDS

EPI/CEDS 68P/68P,Vx1 41P/51P

PHY_0_2.0

PHY_1_2.0

FCIC SPI/ I2C_3

I2SOut

3.3V

20V

PHY_2_2.1

I2C_0

MAIN Audio AMP

PHY_3_2.1

IR/KEY/MIC

IF_S

I2C_1/2

IC,Tx/Rx

AMP

CVBS/ AUDIO L/R

SPDIF OUT

RS-232

H/P

AV

SPDIF

Area OPT(Depend on region)

ETHERNET

LAN

USB_WIFI

3.5V_ST

Combo

To WIFI/BT

3.5V_ST

Sub Audio AMP

IR / KEY

Sub Assy

0.95V

Core

3.5V_ST

3.5V

1.2V_Demod

(Full NIM ONLY)

ST_BY

1.2V DEMOD

Signal Flow

Supply Power

In/out Power

To

13V

3.3V

- 14 -

Panel

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.

A10

920

AE2

AE1

Depending on model

AB4

ARC2

AR2

540

800

521

830

120

400

570

500

571

810

900

951

710

AW1

120

200

- 15 -

501

830

530

WIRING DIAGRAM

HP1

HT1

Power Board

LV2

HT2

LV1

HW1

700

HS1

SPEAKER SPEAKER

LV1

LV2

HW1

IR

Main Board

WIFI

HS1

HP1

HT1

- 16 -

HT2

ASSEMBLY / DISASSEMBLY GUIDE

[Disassembly Guide]

1. Unlock “1” screw to separate Power cord bracket using screw driver, And remove the “2” bracket by pressing the side of the power cord bracket, pulling the power cord line upwards, and then pressing the side of the “3” code to remove the power cord.

2

3

1

2. Unlock “4” screw to Back cover using screw driver.

4 4

44

- 17 -

3. Put the hand in the gap between the back cover and the module, then lift the back cover upwards to separate it.

4. Unlock “5” screw to Wifi bracket using screw driver.

5

- 18 -

5. Remove the “6” latch, disassemble IR assy.

6. Separate “7” connector from PCB.

Eliminate “8” Tape.

6

Slide

7

8

7

8

- 19 -

7

8

7. Separate “9” speaker.

9 9

8. Unlock “10” screw to PCB and supporter using screw driver.

1010

10 10

10

10 10

10

1010

10 10

10

10 10

10 10 10

1010

9. Separate “11” connector from PCB, and dissemble IR Ass’y, Wifi Ass’y and cable.

11

- 20 -

TROUBLE SHOOTING GUIDE

Contents of Standard Repair Process

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

1

A. Video error

No video/Normal audio 1 2 No video/No audio 2 3 Picture broken/ Freezing 3 4 Color error 4

5

Vertical/Horizontal bar, residual image, light

spot, external device color error

5

6

B. Power error

No power 6

7

Off when on, off while viewing, power auto

on/off

7-8

8

C. Audio error

No audio/Normal video 9 9 Wrecked audio/discontinuation/noise 10

10

D. Function error

Remote control & Local switch checking 11

11 MR23 operating checking 12 12 Wifi operating checking 13

13 External device recognition error 14 14 E. Noise Circuit noise, mechanical noise 15 15 F. Exterior error Exterior defect 16

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

Established

date

Revised date

Error

symptom

A. Video error

1/16

Normal

audio

Y

N

Move to No video/No audio

No video Normal audio

Check Vx1 lock voltage

0V

Y

N

Check Power Board (Main) 20V, 12V etc.

Normal

voltage

Y

N

Replace Main Board

Repair Power Board or parts

Check Power Board (Module) 23V output

Normal voltage

Y

Replace module

N

Repair Power Board or parts

End

Always check & record S/W Version before replacing the Main Board

Replace Main Board Re-enter White Balance value

※Precaution

No video/ Normal audio

☞A9

☞A4

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

(Main B/D↔ Power B/D, Vx1 Cable, Speaker Cable, IR B/D Cable,,,)

1

☞A1

Standard Repair Process

Established

date

Revised date

Error

symptom

Normal

voltage?

Check various voltages of Power Board (Main)

(20V, 12V…)

No Video/

No audio

Check and replace MAIN B/D

Y

Replace Power Board and repair parts

N

End

Standard Repair Process

No video/ No audio

☞A9

2

A. Video error

2/16

Picture broken/ Freezing

Y

☞ A3

N

Check RF Signal level

Normal Signal?

Check RF Cable

Connection

1. Reconnection

2. Install Booster

Check

S/W Version

Check whether other equipments have problem or not.

(By connecting RF Cable at other equipment)

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

Replace

Main B/D

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

( All Settings→ Channels → Channel Tuning → Manual Tuning → Check the Signal )

- Signal strength (Normal : over 50%)

- Signal Quality (Normal: over 50%)

Normal

Picture?

Y

Contact with signal distributor

or broadcaster (Cable or Air)

N

Normal

Picture?

Y

Close

N

☞ A4

Standard Repair Process

Established

date

Revised date

3/16

Error

symptom

3

N

Y

Close

N

S/W Upgrade

SVC

Bulletin?

Normal

Picture?

Y

N

Y

Close

Check Tuner

soldering

A. Video error

Color

error?

Y

N

※ Check and

replace Link

Cable (V by one) and contact condition

Y

N

Replace Main B/D

Color

error?

Check error color input mode

Check color by input

-External Input

-AV

-HDMI

Y

External

device/Cable

normal

External

Input error

Check external device and cable

Y

External

device/Cable

normal

HDMI

error

Check external device and cable

Replace Main B/D

N

Color error

☞A6

N

Y

End

Replace module

Request repair

for external

device/cable

Color

error?

Check Test pattern

☞A15

☞ A7

Standard Repair Process

Established

date

Revised date

4/16

Error

symptom

4

A. Video error

Screen

normal?

N

Y

Check external device connection condition

Y

N

Check and replace Link Cable

Normal?

Y

N

Screen

normal?

Replace Main

Replace module

Check color condition by input

-External Input

-HDMI

End

Vertical/Horizontal bar, residual image, light spot

Request repair for external device

Vertical / Horizontal bar, residual image, light spot, external device color error

External device screen error-Color error

External

Input error

Connect other external device and cable

(Check normal operation of External Input, HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc.

N

Y

Replace Main B/D / Module

Screen

normal?

Check screen condition by input

-External Input

-AV

-HDMI/DVI

Request repair for external device

HDMI/

DVI

Connect other external device and cable

(Check normal operation of External Input, Component, RGB and HDMI/DVI by

connecting Jig, pattern

Generator ,Set-top Box etc.

Replace Main B/D /

Module

Screen

normal?

N

Y

Check S/W Version

Y

N

Check

version

S/W Upgrade

Y

N

Normal

screen?

End

Y

N

Replace Module

Screen

normal?

End

Established

date

Revised date

5/16

Error

symptom

Standard Repair Process

☞A6

☞ A7

5

Check Test pattern

A. Video error

No power

Power

LED On?

Y

N

DC Power on by pressing Power Key On Remote control

Y

N

Normal

operation?

Check Power

On ‘”High”

Check Power cord was inserted properly

Check Logo LED

Replace Power B/D

Measure voltage of each output of Power B/D

N

Y

Normal

voltage?

Replace Main B/D

Y

OK?

Replace Main B/D

N

Y

Normal?

Check ST-BY (7.8V)

Replace Power B/D

N

Normal

voltage?

Replace Power B/D

Y

☞A8

☞A9

Standard Repair Process

Established

date

Revised date

6/16

Error

symptom

6

. Stand-By: Red or Turn On . Operating: Turn Off

Close

B. Power error

Off when on, off while viewing, power auto on/off

Error?

N

Y

Check Power Off

Mode

Fix A/C cord & Outlet and check each 2 phase out

Check A/C cord

Check for all 2- phase

power out

Check outlet

Replace Main B/D

CPU

Abnormal

(If Power Off mode

is not displayed) Check Power B/D voltage

Y

N

Replace Main B/D

Normal

voltage?

Replace Power B/D

N

Y

Normal? End

※ Caution

Check and fix exterior of Power B/D Part

☞A10

☞A9

Established

date

Revised date

7/16

Error

symptom

Standard Repair Process

7

Abnormal

1

B. Power error

Off when on, off while viewing, power auto on/off

Established

date

Revised date

8/16

Error

symptom

Standard Repair Process

8

* Please refer to the all cases which can be displayed on power off mode.

Power off history

contents Explanation Action contents

00 ~ 0F Normal Status

Normal

Power On/Off (ex. Remote_Key, Local_Key Etc)

Normal Code

10 ~ 1F Check Power

Need

to check the Power condition (ex. AC_DET)

Check the

Power & Power B/D

20 ~ 2F

External device

/Network

Control by

External device /Network (ex. HDMI CEC,

WiFi

/Lan/BT)

Normal Code

– Check the Settop Box CEC

- HDMI Setting > Check the Simplelink Menu

- Check the “TV On With Mobile” Menu

30 ~ 3F User Scene

Power

on/off by User Scene (ex. Timer On/Off , No Signal Off)

Normal Code

- Check the “Power On(Off) Timer” Menu

- Check the Input Signal (

No Signal >auto power

off after 15min

)

40 ~ 4F App/CP

App Button

by Remote (ex. Netflix, Disney)

Normal Code

50 ~ 5F SW Update

S/Ware

Update

Normal Code

60 ~ 6F System Error

System

Abnormal(Need to check Main & SW)

Need to Check SW

version(Last version) & Main B/D

70 ~ 7F AR/AOD

AR

Mode, AOD Mode

Normal Code

80 ~ 8F WOV

Power

on by Voice

Normal Code

– Check the Voice Recognition Settings

90 ~ 9F

Special Country

Special

Country only (ex. Satellite, Disaster)

N/A

B0 ~ BF OLED(BDP)

OLED

Models only - Panel

Check the

OLED Module ( BDP )

C0 ~ CF

OLED(Pixel

Cleaning)

OLED

Models only - Pixel Cleaning

Check the

OLED Module ( Without BDP )

D0 ~ D5 OLED(Etc)

OLED

Models only (ex. Fan, FPC Cable)

Check the

FFC Cable (T-con to Main)

Check the

Fan & Heat Plate

L0 ~ LF

Life Style Model

Life Style

Model only

N/A

R0 ~ RF A+

Rollabe

only

N/A

M0 ~ MF Wireless Model

Wireless

Model only

N/A

F0 ~ FF Factory/SVC

Factory

/SVC (ex. in-stop, Power Only, etc)

Normal Code

- N/A

XX Reserved

Normal Code

B. Power error

No audio Screen normal

Check user menu > Speaker off

Off

N

Y

Cancel OFF

Check audio B+ 20V of Power Board

Normal

voltage

Y

N

Replace Power Board and repair parts

Check Speaker disconnection

N

Y

connecting Speaker

Replace MAIN Board

End

No audio/ Normal video

☞A11 ☞A12+A9

Disconnection

9/16

Standard Repair Process

9

Established

date

Revised date

Error

symptom

C. Audio error

→ abnormal audio/ discontinuation/ noise is same after “Check input signal” compared to No audio

C. Audio error

Wrecked audio/ discontinuation/noise

Wrecked audio/

Discontinuation/

Noise for

all audio

Check and replace speaker and connector

Wrecked audio/

Discontinuation/

Noise only

for D-TV

Wrecked audio/

Discontinuation/

Noise only

for Analog

Wrecked audio/

Discontinuation/

Noise only

for External Input

Connect and check other external device

N

Y

Normal

audio?

Check and fix external device

Replace Power B/D

N

Y

Normal

voltage?

Check input signal

-RF

-External Input signal

Signal

normal?

(When RF signal is not

received)

Request repair to external cable/ANT provider

Y

Check audio B+ Voltage (20V)

Replace Main B/D

(In case of

External Input signal error) Check and fix external device

Replace Main B/D

N

End

Established

date

Revised date

10/16

Error

symptom

Standard Repair Process

10

☞A12+A9

Established

date

Revised date

Error

symptom

Remote control & Local switch checking

Y

N

1. Remote control(R/C) operating error

Check R/C itself

Operation

Normal

operating?

Normal

operating?

Y

Close

Replace R/C

If R/C operate,

Explain the customer

cause is interference

from light in room.

Check R/C Operating

When turn off light

in room

Check & Replace

Baterry of R/C

Check & Repair Cable connection Connector solder

Normal

operating?

Check B+

3.5V

On Main B/D

☞A13

Normal

Voltage?

Close

N

Check 7.8V on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

☞A9

Check IR

Output signal

Normal

Signal?

N

Y

Repair/Replace

IR B/D

N

☞A13

Replace

Main B/D

Y

☞A13

Standard Repair Process

11/16

11

Y

D. Function error

Established

date

Revised date

Error

symptom

12/16

D. Function error

MR23 operating checking

2. MR23 (Magic Remote control) operating error

Standard Repair Process

Y

N

Check MR23

itself Operation

Normal

operating?

Normal

operating?

Y

Check & Replace

Battery of MR23

Is show ok

message?

Press the

wheel

Is show ok

message?

N

Y

Replace

MR23

Turn off/on the

set and press

the wheel

Press the back key about 5sec

•If you conduct the loop at 3times, change the MR23.

Y

Check the

INSTART menu

RF Receiver ver

is “00.00”?

Y

Check & Repair

RF assy

connection

N

Down load the Firmware

* INSTART MENU

 12.RF Remote control Test

 Receiver Firmware download

Y

RF Receiver ver

is “00.00”?

N

☞A14

☞A4

Close

12

Close

Established

date

Revised date

Error

symptom

Wifi operating checking

3.Wifi operating error

Check the

INSTART menu

Wi-Fi Mac value

is “NG”?

Y

Check & Repair

Wifi cable

connection

N

Check the Wifi wafer

1pin

Standard Repair Process

13/16

13

Change the Wifi

assy

Normal

Voltage?

Y

N

Replace

Main B/D

Wi-Fi Mac value

is “NG”?

N

☞A14

☞A4

☞A14

Close

D. Function error

Check technical information

- Fix information

- S/W Version

N

Y

Technical

information?

Check input signal

Signal

input?

Y

N

External Input

Recognition error

Check and fix

external device/cable

HDMI/ DVI, Optical Recognition

error

Replace Main B/D

Fix in

accordance

with technical

information

D. Function error

External device recognition error

Established

date

Revised date

14/16

Error

symptom

Standard Repair Process

14

Check location

of noise

Identify nose type

Circuit

noise

Replace PSU

Mechanical

noise

Check location of noise

※ When the nose is severe, replace the module

(For models with fix information, upgrade the

S/W or provide the description)

OR

※ If there is a “Tak Tak” noise from the

cabinet, refer to the KMS fix information and then proceed as shown in the solution manual (For models without any fix information, provide the description)

※ Mechanical noise is a natural phenomenon, and apply the 1st level description. When the customer does not agree, apply the process by stage. ※ Describe the basis of the description in

“Part related to nose” in the Owner’s

Manual.

E. Noise

Circuit noise, mechanical noise

Established

date

Revised date

15/16

Error

symptom

Standard Repair Process

15

Replace module

Zoom part with exterior damage

Module

damage

Cabinet

damage

Replace cabinet

Replace remote control

Remote

control

damage

Stand

dent

Replace stand

F. Exterior defect

Exterior defect

Established

date

Revised date

16/16

Error

symptom

Standard Repair Process

16

Contents of Standard Repair Process Detail Technical Manual

No. Error symptom Content Page Remarks

1 A. Video error_ No video/Normal audio Check Vx1 lock A1

2

A. Video error_ video error /Video lag/stop

TUNER input signal strength checking method

A3

3 Version checking method A4 4 Tuner Checking Part A5

5

A. Video error _Vertical/Horizontal bar,

residual image, light spot

Connection diagram A6

6 A. Video error_ Color error

Check Link Cable (Vx1/EPI) reconnection condition

A7

7

Defected Type caused by T-Con/ Inverter/ Module

Check Cable (1) ~ (2)

A-1/11 A-2/11

Exchange Main Board (1) ~ (3) A-3/11 ~ A-5/11 Exchange Module (1) ~ (3) A-6/11 ~ A-8/11

Exchange T-Con (1) ~ (2) A-9/11 ~ A-10/11 Exchange Power Board(PSU) A-11/11

Continue to the next page

Contents of Standard Repair Process Detail Technical Manual

Continued from previous page

No. Error symptom Content Page Remarks

8

B. Power error_ No power

Check front display LED A8

9 Check power input Voltage & Main ST-BY 3.5V A9

10

B. Power error_Off

(when on/off, while viewing)

POWER OFF MODE checking method A10

11

C. Audio error_ No audio/Normal video

Checking method in menu when there is no audio A11

12

Voltage and speaker checking method when there is no audio

A12

13

D. Function error

Remote control operation checking method A13

14 Motion Remote operation checking method A14

15

E. Etc

How to use the Service remote control A15-A17

16 Check items after Main B/D replacement A18

A1

Standard Repair Process Detail Technical Manual

A1

Check Vx1 lock

A. Video error_No video/Normal audio

- Check a voltage of R7624(Red) after turn on the TV. If the voltage is low, Vx1 is locked.(OK)

* Refer : Burnt Detect Check Point In the state of TV

on, Check the voltage of R7632 (Blue).

- Low (0V) : Normal, High (3.3V) : Burnt Detect

Established

date

Revised

date

Error symptom

Content

A3

Standard Repair Process Detail Technical Manual

TUNER input signal strength checking method

Select “Gear”  General  Programmes  Programme Tuning & setting  Manual Tuning  Antenna DTV

Established

date

Revised

date

Error symptom

Content

A. Video error_Video error, video lag/stop

Version

A4

Standard Repair Process Detail Technical Manual

Press the IN-START with the remote control for adjustment.

OLED TV Version checking method

Established

date

Revised

date

Error symptom

Content

A. Video error_Video error, video lag/stop

Standard Repair Process Detail Technical Manual

TUNER checking part

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 MAIN BOARD.

Established

date

Revised

date

Error symptom

Content

A. Video error_Video error, video lag/stop

Standard Repair Process Detail Technical Manual

A6

As the part connecting to the external input, check the screen condition by signal

OLED TV Connection diagram

A. Video error _Vertical/Horizontal bar,

residual image, light spot

A6

Error symptom

Content

Established

date

Revised

date

A7

Standard Repair Process Detail Technical Manual

Check Link Cable (Vx1) reconnection condition

A. Video error_Color error

Check the contact condition of the Link Cable, especially dust or mis insertion.

Error symptom

Content

Established

date

Revised

date

A - 1/11

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Item

Symptom

Name

Cause Symptom Image

CABLE Color smear

Poor broken pin of FFC cable

CABLE

R Color

Excessive

Color is Excessive due to FFC Cable

Contact.

CABLE Screen darkness

screen is dark due to poor contact due

to disconnection of the FFC cable pin.

CABLE

G Color

Excessive

G color transient due to poor FFC cable

connection

A - 2/11

Item

Symptom

Name

Cause Symptom Image

CABLE Color spread LVDS cable connection problem

CABLE Screen stop

Due to foreign substance withinLVDS

cable PIN

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Check parts by symptom

A - 3/11

Item

Symptom

Name

Cause Symptom Image

Main Screen noise Bit noise from horizontal screen

Main Screen noise

Broken screen due to

Main IC problem

Main Dark picture Dark left-side screen

Main Broken picture

Top/bottom screen part

Picture problem due to tuner

Inner side quality problem

Appendix. Examples of Symptoms(Main)

A - 4/11

Item

Symptom

Name

Cause Symptom Image

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

Check parts by symptom

Appendix. Examples of Symptoms(Main)

A - 5/11

Item

Symptom

Name

Cause Symptom Image

Main Broken picture

No problem at the initial stage,

G-color spread after 10 minutes

Main

Right-side

Screen

problem

Right-side screen problem

Main

LG logo

Screen problem

Screen picture spread problem

Main

Right-side

picture problem

No problem at the initial stage.

During Heat run, right-side picture

problem

Check parts by symptom

Appendix. Examples of Symptoms(Main)

Item

Symptom

Name

Cause Symptom Image

MODULE

Isometric

Horizontal Bar

Isometric horizontal bars occur

throughout the screen

MODULE Internal matter

BLU internal foreign matter inflow

MODULE Image broken

6 block image broken

MODULE Image broken Screen sync signal broken

A - 6/11

Check parts by symptom

Appendix. Examples of Symptoms(Module)

Item

Symptom

Name

Cause Symptom Image

MODULE Image broken

Internal damage and image breakage

due to external impact

MODULE

Bend on the

screen

Bending due to lateral external impact

and internal bending of BLU

MODULE Vertical smear

Vertical spreading on cube screen in no

signal

MODULE Over color Screen contour part brightly Over color

A - 7/11

Check parts by symptom

Appendix. Examples of Symptoms(Module)

Item

Symptom

Name

Cause Symptom Image

MODULE Vertical bar Center Vertical Bar

MODULE Screen darkness

Center of the screen 1 block dark

MODULE Vertical bar Center Vertical Bar

MODULE

Darkness at the

bottom of the

screen

MODULE internal BLU breakage

A - 8/11

Check parts by symptom

Appendix. Examples of Symptoms(Module)

Item

Symptom

Name

Cause Symptom Image

T-CON

screen lower

image broken

T-Con is defective and the picture below

the screen is broken

T-CON

screen lower

image broken

T-Con is defective and the picture below

the screen is broken

T-CON

screen lower

image broken

T-Con is defective and the picture below

the screen is broken

T-CON

screen lower

image broken

T-Con is defective and the picture below

the screen is broken

A - 9/11

Check parts by symptom

Appendix. Examples of Symptoms(T-Con)

Item

Symptom

Name

Cause Symptom Image

T-CON Image Broken

T-CON Wafer Locking The strength is

weak and cable contact failure occurs

T-CON

Darkness at the

top of the screen

Initial normal operation,

upper darkness during heat run

T-CON Image Broken

The entire screen is dark and bit noise

occurs

T-CON Image Broken

The entire screen is dark and bit noise

occurs

A - 10/11

Check parts by symptom

Appendix. Examples of Symptoms(T-Con)

Appendix : Exchange Power Board (PSU)

No Light

No picture/Sound Ok

A – 11/11

A8

ST-BY condition : On or Off Power ON condition : Turn Off

Standard Repair Process Detail Technical Manual

Check front Power Indicator

A8

LED

Error symptom

Content

Established

date

Revised

date

B. Power error _No power

A9

Standard Repair Process Detail Technical Manual

P201

P251,P252

Power To Main B’d

Power To Module

P202

77B3

Check the DC 12VT line for ST-BY Voltage (ST-BY : 7.8V, Normal : 12V)

A9

Error symptom

Content

Established

date

Revised

date

B. Power error _No power

Check power input voltage and ST-BY 3.5V

A9

Standard Repair Process Detail Technical Manual

A9

P201

P252

Power To Main B’d

Power To Module

55/65B3

P251

Check the DC 12VT line for ST-BY Voltage (ST-BY : 7.8V, Normal : 12V)

Check power input voltage and ST-BY 3.5V

B. Power error _No power

Error symptom

Content

Established

date

Revised

date

A10

Standard Repair Process Detail Technical Manual

B. Power error_Off (when on, whiling viewing)

POWER OFF MODE checking method

Entry method

1. Press the IN-START button of the

remote control for adjustment.

2. Press the navigation key(Right) 3 times, entry into SVC menu 2 page.

Error symptom

Content

Established

date

Revised

date

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 TV Speaker.

Checking method in menu when there is no audio

C. Audio error_No audio/Normal video

Standard Repair Process Detail Technical Manual

Error symptom

Content

Established

date

Revised

date

A12

②

①

P201

① Check the contact condition of or 20V connector of Main Board.

② Measure the 20V input voltage supplied from Power Board.

(If there is no input voltage, remove and check the connector.)

③ 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.

Checking order when there is no audio

1

SPK_R

-_CT 2

SPK_R

-_FT

3

SPK_R+_CT

4

SPK_R+_FT

Voltage and speaker checking method when there is no audio

A12

Standard Repair Process Detail Technical Manual

Error symptom

Content

Established

date

Revised

date

C. Audio error_No audio/Normal video

A13

Standard Repair Process Detail Technical Manual

1. Check IR cable condition between IR & Main board.( Check picture number① and ②).

2. Check the Pin 22, Standby Power 3.5V (③)

3. AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective.

A13

③

Pin Pin name

1 3.5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND 5 WOL/WIFI_POWER_ON 6 3.5V_WIFI

7 WIFI_SUSPEND/RESUME

8 GND

9 COMBO_RESET 10 BT_WAKEUP_HOST 11 GND 12 3.5V_WIFI 13

N/C

14 N/C 15 N/C 16 EYE_SDA

17 EYE_SCL

18 GND 19 IR 20 LED_R 21 GND 22 +3.5V_ST 23 KEY2 24 WOV_PDM0_DATAIN 25 WOV_PDM_CLKOUT

Remote control operation checking method

D. Function error

Checking order to check remote control

① IR & EYE Sensor

77B3

②

LED

IR

Eye

Error symptom

Content

Established

date

Revised

date

A13

Standard Repair Process Detail Technical Manual

A13

③

Pin Pin name

1 3.5V_WIFI

2 WIFI_DM

3 WIFI_DP

4 GND

5 WOL/WIFI_POWER_ON

6 3.5V_WIFI

7 WIFI_SUSPEND/RESUME

8 GND

9 COMBO_RESET 10 BT_WAKEUP_HOST 11 GND 12 3.5V_WIFI 13

N/C

14 N/C 15 N/C 16 EYE_SDA

17 EYE_SCL

18 GND 19 IR 20 LED_R 21 GND 22 +3.5V_ST 23 KEY2 24 WOV_PDM0_DATAIN 25 WOV_PDM_CLKOUT

1. Check IR cable condition between IR & Main board.( Check picture number① and ②).

2. Check the Pin 22, Standby Power 3.5V (③)

3. AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective.

Checking order to check remote control

Remote control operation checking method

D. Function error

① IR & EYE Sensor

55/65B3

Eye

LED

IR

②

Error symptom

Content

Established

date

Revised

date

Error symptom

Content

Established

date

Revised

date

A14

Standard Repair Process Detail Technical Manual

A14

Checking order

1. Check BT/Wifi cable condition between BT/Wifi assy & Main board.

2. Terminal Pin 1, Pin 6, Pin12, Check 3.5V Power. (No. ③)

③

Pin Pin name

1 3.5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND 5 WOL/WIFI_POWER_ON 6 3.5V_WIFI

7 WIFI_SUSPEND/RESUME

8 GND

9 COMBO_RESET 10 BT_WAKEUP_HOST 11 GND 12 3.5V_WIFI 13

N/C

14 N/C 15 N/C 16 EYE_SDA

17 EYE_SCL

18 GND 19 IR 20 LED_R 21 GND 22 +3.5V_ST 23 KEY2 24 WOV_PDM0_DATAIN 25 WOV_PDM_CLKOUT

Motion Remote operation checking method

D. Function error

① Wifi & BT Front

Wifi & BT Rear

②

A15

Standard Repair Process Detail Technical Manual

How to access the remote control

0 4 1 3

How to use the Service remote control

Error symptom

Content

E. Etc

Press the button 3times.

Established

date

Revised

date

A16

Standard Repair Process Detail Technical Manual

Remote Control Part Definition

Error symptom

Content

POWER Power On/Off

ETC (Added Function)

[ETC] Each time pressing the KEY button, Mode gets changed to ETC and P-ONLY each time All KEY function [PIP PR-][PIP PR+][SWAP] [PIP INPUT][DVI] KEY Function

P-ONLY (Added Function)

Changed to factory mode 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

PSM

Changes in the order of Bright Picture=>Easy Picture=>Cinema=>Spots=>Game=> 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 Function)

Access to the Simplink-connected device

EYE

Digital EYE function ON/OFF For some Model, access to the Test Pattern

TILT Used for screen tilting change (Access to the old PDP control mode)

E. Etc

How to use the Service remote control

Established

date

Revised

date

A17

Standard Repair Process Detail Technical Manual

Error symptom

Content

How to use the Service remote control

Established

date

Revised

date

B-TOOTH (Added function)

Connected to Blue-Tooth

IN-START

Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex) V03.11.0 Current S/W version

MICOM Version ex) V3.05.0 current Mi-Com version UTT ex) User TV total usage time

ADJ

POWER OFF STATUS ex) Shows power-off status 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

function)

Moves forward/backward of recorded contents

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

(Add function)

Connects to HDMI 1,2,3,4

DVI (Add function) Connects to DVI

Explaining the button name of the Remote control

E. Etc

Standard Repair Process Detail Technical Manual

A18

3) Insert USB(tool option data)

4) When connected via USB, the setting menu is displayed. Enter ‘Model name.suffix’ and ‘serial number’ 입력합니다.

5) Press IN STOP YES

2. Problem solution

1. Change tool option data

If the TV Screen is a white pattern and the pop-up window does not appear when connecting USB.

Press the “BACK" or “EXIT” on the remote controller for 3 seconds to switch to White noise screen.

1) Download tool option data from GSSC system to USB(Storage device) Download path : GSCS → Manual → TV option Tool

2) Unzip the file(USB Device) "LG_SVC_DTV.zip"

1

2

Check items afer Main B/D (Model, Serial Number, Tool option D/L)

E. Etc

Error symptom

Content

How to use the Service remote control

Established

date

Revised

date

Check the front LED

- Standby mode : Red light turns on

- In operation : Off

Turn on the power using a remote control

Replace Main B/D

Re-connect and

check again

Check the power cord

connection

☞ How to measure voltage(1/4)

LG TV

Replace Power B/D

☞ How to measure voltage(2/4)

Measure the output voltage of Power B/D

(12VM / 20VS)

Properly connected

Measure the output voltage of

Power B/D ST-By

Normal

voltage

Normal

voltage

LED

turns on

Replace Power B/D

Y

N

Y

N

Y

N

Y

N

Guide to inspecting parts for symptoms of no power / no screen

1 / 1

Check the input voltage of

Power B/D → Module

☞ How to measure voltage(4/4)

Normal

voltage

Check Main B/D

&

Module

Y

N

Measure the output voltage of

PWR_On

Normal

voltage

☞ How to measure voltage(3/4)

N

Check if the power strip is working properly

Spec : 7.8V

Y

Defective Main B/D or Power B/D

Spec : 3V or higher

Defective Power B/D

Defective Main B/D

Defective Power B/D

OLED TV

 How to check

- Check if the test pattern works normally

 Criteria

- Normal pattern: Replace Main B/D

- Defective pattern: Replace Module

LED TV_

T-Con

 How to check

- Measure the voltages of 5 points

on T-Con B/D

 Criteria

- Normal voltage: Replace Main B/D

- Defective voltage: Replace Module

LED TV_

T-Conless

 How to check

- Measure the voltages of 5

points on

T-Con B/D

 Criteria

- Normal voltage: Replace Module

- Defective voltage: Replace Main B/D

How to check Main SoC

Check for Power B/D defects Check for Main B/D or Module defects

Bottom front LED turns off

Check the sound

(Mute key 3 times)

☞ How to check

Beeping sound

Replace Main B/D

Y

N

Defective SoC

[For all models]

If the result comes out ‘NG’ for each part, make sure to check the connector

between the part and the cable is properly connected.

(Check if the cable connection is normal)

Internalize T-Con → Main B/D

Distribution completed

Check for Power cord connection

Check the supply voltage of Main B/D → Power B/D

1. Measure the 12VM of Power B/D and Main B/D connector

2. When measuring 12VM, it is considered normal if ST-by is7.8V and Normal is 12.

3. If the result comes out ’NG’, replace Power Board

Note. 1 / 4

Note 1. How to measure ST-by

The ST-by voltage for each model may be different, so refer to the Appendix A9 page in Service Manual. (Some models launched before 2017 may have 5V / 3.5V)

●

1. Check the output voltage of Power B/D and Main B/D connector

2. Check the output voltage of 20VS and 12VM

3. If the result comes out ’NG, check the voltage of PWR_ON

Note. 2 / 4

Note 2. How to measure the output voltage of Power B/D

●

1. Check the PWR_ON voltage of Power B/D and Main B/D connector

2. The normal power supply voltage from Main B/D to Power B/D is 3V or higher

3. If the result comes out ’NG, replace Main Board. If it comes out ‘OK’, replace Power B/D

4. The normal power supply from MAIN to POWER is 3V or higher

Note. 3 / 4

Note 3. How to measure PWR On

PWR_ON

●

1. Check the 21.5V and 12V voltage of Power B/D and T-Con B/D connector

2. If the result comes out ’NG, replace Power B/D. If it comes out ‘OK’, check if Main B/D and Module operate normally.

Note. 4 / 4

Note 4. How to measure Power B/D Module

Appendix. How to check for OLED TV module defects

Appendix. 1 / 1

[Models launched before 2025]

Power B/D Main B/D

T-Con

JIG

1. Disassemble the back cover to disconnect the Main B/D

2. Check if the test pattern is working on the screen

3. If the pattern appears, it means the Main B/D is defective (need to replace it)

4. If the pattern doesn’t appear, (keep showing no screen), it means the Module is defective(need to replace it)

OLED TV

A jig for sending test patterns

//

Parts connecting Cable

※ SVC Part P/No : RAD33749101

[Connecting the power cable, T-Con FFC cable to the Jig]

Connect the powerboard-mainboard cable with the powerboard-JIG

Connect the T-Con ~ motherboard

FFC cable to the Jig

R.G.B pattern operation

Series Size Model Name V17 V18 V19 V20 V21 V22 V23

A

48 OLED48A* O O O 55 OLED55A* O O O 65 OLED65A* O O O 77 OLED77A* O O O

B

55 OLED55B* O O O O O O O 65 OLED65B* O O O O O O O 77 OLED77B* O O O O O

C

42 OLED42C* O O 48 OLED48C* O O O O 55 OLED55C* O O O O O O O

65 OLED65C* O O O O O O O

77 OLED77C* O O O O O O 83 OLED83C* O O O

E

55 OLED55E* O O O 65 OLED65E* O O O

G

55 OLED55G* O O O O 65 OLED65G* O O O O O O O 77 OLED77G* O O O O O O 83 OLED83G* O O 97 OLED97G* O

W

65 OLED65W* O O O 77 OLED77W* O O O

LG OLED55B3, OLED65B3 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual