LG OLED55B9PUA, OLED65B9PUA Schematic

CONFIDENTIAL

OLED TV

SERVICE MANUAL

CHASSIS : EA92B

MODEL : OLED55B9PUA

MODEL : OLED65B9PUA

CAUTION

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

P/NO : MFL71409504 (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.

CONTENTS

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

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

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

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

SOFTWARE UPDATE .............................................................................. 9

BLOCK DIAGRAM ................................................................................. 10

EXPLODED VIEW .................................................................................. 17

DISASSEMBLY GUIDE .......................................................................... 18

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 M 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.

Ω and 5.2 MΩ.

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 mod-

ule or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard.

2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of its assemblies.

4. Unless specied otherwise in this service manual, clean

electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10 % (by volume) Acetone and 90 % (by volume) isopropyl alcohol (90 % - 99 % strength)

CAUTION: This is a ammable mixture. Unless specied otherwise in this service manual, lubrication of

contacts in not required.

5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.

6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.

7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last.

8. Use with this receiver only the test xtures specied in this

service manual.

CAUTION: Do not connect the test xture ground strap to any

heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES

devices are integrated circuits and some eld-effect transistors

and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static type solder removal device. Some solder

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

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

electrical charges sufcient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your

foot from a carpeted oor can generate static electricity sufcient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 °F to 600 °F.

2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature.

(500 °F to 600 °F) b. Heat the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the circuit

board printed foil.

6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature

(500 °F to 600 °F)

b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it there only until the solder ows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil.

d. Closely inspect the solder area and remove any excess or

splashed solder with a small wire-bristle brush.

- 4 -

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.

Replacement

1. Carefully insert the replacement IC in the circuit board.

2. Carefully bend each IC lead against the circuit foil pad and solder it.

3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as possible to the component body.

2. Bend into a "U" shape the end of each of three leads remaining on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection.

Power Output, Transistor Device Removal/Replacement

1. Heat and remove all solder from around the transistor leads.

2. Remove the heat sink mounting screw (if so equipped).

3. Carefully remove the transistor from the heat sink of the circuit board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heat sink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as possible to diode body.

2. Bend the two remaining leads perpendicular y to the circuit board.

3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder.

3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).

2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.

At Other Connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.

Fuse and Conventional Resistor Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board hollow stake.

2. Securely crimp the leads of replacement component around notch at stake top.

- 5 -

SPECIFICATION

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

.

1. Application range

This specification is applied to the OLED TV used EA92B chassis.

2. Test condition

Each part is tested as below without special appointment. (1) Temperature : 25 ºC ± 5 ºC(77 ± 9 ºF) , CST : 40 ºC ± 5 ºC (2) Relative Humidity: 65 % ± 10 % (3) Power Voltage

: Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models.

(4) Specification and performance of each parts are followed

each drawing and specification by part number in accordance with BOM.

(5) The receiver must be operated for about 5 minutes prior to

the adjustment.

3. Test method

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

- Safety : UL, CSA, CE, IEC specification

- EMC : FCC, ICES, CE, IEC specification

4. General Specification

No Item Specication Remark

1 Market North America

2 Broadcasting system ATSC / NTSC-M, 64 & 256 QAM

3 Available Channel VHF : 02~13

UHF : 14~69

DTV : 02-69

CATV : 01~135

CADTV : 01~135

4 Receiving system Digital : ATSC, 64 & 256 QAM

Analog : NTSC-M

5 Video Input NTSC-M Rear gender(1EA)

6 HDMI Input HDMI 1 PC / DTV format Support 6Gbps

HDMI 2 PC / DTV format Support 6Gbps, Support ARC

HDMI 3 PC / DTV format Support 6Gbps

HDMI 4 PC / DTV format Support 6Gbps

7 Audio Input AV Audio / DVI Audio Rear(AV Gender), Except Korea model

L/R Input : Rear AV and DVI use same jack

8 Audio out SPDIF(1EA) Optical Audio out Rear(1EA)

HeadPhone(1EA) HeadPhone out Rear(1EA)

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

10 Ethernet Connect (1EA) Ethernet Connect

- 6 -

5. External Input Support Format

5.1. HDMI Input (PC/DTV)

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

HDMI-PC

1 640*350 31.46 70.09 25.17 EGA

2 720*400 31.46 70.08 28.32 DOS

3 640*480 31.46 59.94 25.17 VESA(VGA)

4 800*600 37.87 60.31 40 VESA(SVGA)

5 1024*768 48.36 60 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 When HDMI1,2,3,4

15 3840*2160 135 60 594 UDTV 2160P

16 3840*2160 225 100 1188 UDTV 2160P When HDMI1,2,3,4

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 When HDMI1,2,3,4

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 When HDMI1,2,3,4

25 4096*2160 270 120 1188 UDTV 2160P

26 2560*1440 88.78 60 241.5 3K When HDMI1,2,3,4

27 2560*1440 183 120 497.7 3K

UHD DEEP COLOUR ON

UHD DEEP COLOUR ON, HDMI SWITCH model

UHD DEEP COLOUR ON

UHD DEEP COLOUR ON, HDMI SWITCH model

UHD DEEP COLOUR ON

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 480I(525I) Spec. out but display

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

- 7 -

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

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

31 3840*2160 134.86 59.94 593.4 UDTV 2160P

32 3840*2160 135 60 594 UDTV 2160P

33 3840*2160 225 100 1188 UDTV 2160P When HDMI1,2,3,4

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

40 4096*2160 112.5 50 594 UDTV 2160P

41 4096*2160 134.86 59.94 593.4 UDTV 2160P

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

46 2560*1440 183 120 497.7 3K

UHD DEEP COLOUR ON

UHD DEEP COLOUR ON,

HDMI SWITCH Model

- 8 -

SOFTWARE UPDATE

1. USB

(1) Insert the USB memory Stick to the USB port (2) Automatically detect the SW Version and show the below

message

(3) Click [YES]: initiate the download and install of the update.

(4) Click [Check Now]: move to “About This TV” page for

update

(5) TV is updating

2. NSU

(This Function is needed to connect to the internet)

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

(2) Click [CHEK FOR UPDATES] : system check newest

version

(6) After finished the update, below Pop-up appear

(7) Click [Yes] : TV will be DC OFF -> ON (8) After TV turned on, Check the updated SW Version and

Tool Option

(3) Click [DOWNLOAD AND INSTALL] (4) TV is updating

(5) After finished the update, below Pop-up appear

(6) Turn OFF the TV and On. Check the updated SW Version

and Tool Option

- 9 -

MAIN Audio AMP

(NTP7519)

Main IC

IF+, IF-

OPTIC

LAN

HDMI1 HDMI 2.1

EEPROM(NVRAM)

(256Kb)

PHY3_RX0N

Air/

Cable

TUNER

(Air/Cable)

Satellite

TUNER

(S/S2)

USB1 (2.0)

eMMC

(8GB)

Sub Micom

(RENESAS

R5F100GEAFB)

P_TS(Korea / Japan / China)

X_TAL

24MHz

X_TAL

32.768KHz

I2S Out

I2C 0

I2C 4

R

E

A

R

YPbPr

SPDIF OUT

ETHERNET

I2C 1

SUB

ASSY

IR / KEY

WIFI/BT Combo

USB_WIFI

CVBS

HDMI3 HDMI 2.1

USB2 (2.0)

RS232C/HP

HDMI2(ARC) HDMI 2.1

AV

Vx1

OCP

USB2_0

USB2_2

PHY2_RX0N

PHY1_RX0N

I2C 2

SIF

HDMI4 HDMI 2.1

PHY0_RX0N

OLED T-

Con

CVBS/COMP

M0

M1

DDR3 1066

512MB

DDR3 1066

512MB

DDR3 1066

512MB

DDR3 1066

512MB

I2C 3/5

USB3 (2.0)

OCP

USB2_1

Depend on Region

Side

Rear

Depend on Region

Side

Rear

I_P, I_N, Q_P, Q_N

EU/CIS/AJJA

US / BR

HAWK2

HDMI

2.1 Switch

1. Main

BLOCK DIAGRAM

- 10 -

SCL0

SDA0

100Ω

3.3KΩ

Main IC

+3.3V_NORMAL

3.3KΩ

33Ω

IC102

NVRAM

+3.3V_NORMAL

IC5300

NTP7519

SCL2

SDA2

TUNER

SCL4

SDA4

33pF

SCL5

SDA5

1.2KΩ

SCL1

SDA1

IC3000

MICOM

33Ω

3.3KΩ

+3.3V_NORMAL

3.3KΩ

+3.3V_NORMAL

IC3600

MSB3100

33Ω

OLED T-con

33Ω

47pF

+3.3V_TU

2.7KΩ

33Ω

IC7001

LNB

+3.3V_NORMAL

SCL3

SDA3

TUNER(JAPAN)

33Ω

Depend on Region

33Ω

2. I2C

- 11 -

SCL5

SDA5

DMD_TADC_INP

DMD_TADC_INN

AAD_ADC_SIF

Tuner

[IF_P] 8

[IF_N] 7

+3.3V_TU

[SCL_RF] 1

[SDA_RF] 2

[SIF] 6

[CVBS] 4

[IF_AGC] 5

FILTER

33 ȳ

IF_P_TU

IF_N_TU

TU_CVBS

IF_AGC

TADC_I_INP

TADC_I_INN

CVBS_IN1

IFAGC

+3.3V_TU

1.8Kȳ

Main IC

B1[+3.3V_RF]3

TU_SIF

3. Tuner

- 12 -

Main IC

CVBS_IN2

Tuner

Jack Side

SoC Side

JK3401

AV_CVBS_IN / AV_L_IN / AV_R_IN

COMP1_Y / COMP_Pb / COMP_Pr

AV1_CVBS_IN_SOC

COMP1_Pb_IN_SOC

COMP1_Pr_IN_SOC

AUAD_L_CH2_IN

AUAD_R_CH2_IN

TU_CVBS_TU

TU_SIF_TU, IF_P/N_TU

CVBS_IN1

AAD_ADC_SIF, DMD_TADC_INP, DMD_TADC_INN

TU_CVBS

TU_SIF, TADC_I_INN/INP

I_N/P_TU, Q_N/P_TU SADC_I/Q_INN/INP

DMD_SADC_INN/INP_I, DMD_SADC_INN/INP_Q

AUAD_R_CH2_IN

PB1_IN

PR1_IN

Y1_IN

COMP1_Y_IN_SOC

JK3402

4. Video & Audio IN

- 13 -

5. Audio OUT

Main IC

CVBS_IN2

Tuner

Jack Side

SoC Side

JK3401

AV_CVBS_IN / AV_L_IN / AV_R_IN

COMP1_Y / COMP_Pb / COMP_Pr

AV1_CVBS_IN_SOC

COMP1_Pb_IN_SOC

COMP1_Pr_IN_SOC

AUAD_L_CH2_IN

AUAD_R_CH2_IN

TU_CVBS_TU

TU_SIF_TU, IF_P/N_TU

CVBS_IN1

AAD_ADC_SIF, DMD_TADC_INP, DMD_TADC_INN

TU_CVBS

TU_SIF, TADC_I_INN/INP

I_N/P_TU, Q_N/P_TU SADC_I/Q_INN/INP

DMD_SADC_INN/INP_I, DMD_SADC_INN/INP_Q

AUAD_R_CH2_IN

PB1_IN

PR1_IN

Y1_IN

COMP1_Y_IN_SOC

JK3402

- 14 -

HDMI4 (SIDE)

HDMI 2.1

HDMI2 (SIDE) with ARC

HDMI 2.1

CEC_REMOTE

RENESAS

MICOM(IC3000)

Main IC

HDMI_ARC

X-Tal(X3000)

32.768kHz

HDMI1 (SIDE)

HDMI2.1

DDC_SCL_1

DDC_SDA_1

TMDS Link

DDC_SCL_2

DDC_SDA_2

TMDS Link

DDC_SCL_4

DDC_SDA_4

TMDS Link

HDMI_CEC_MICOM

Q3001

DDC_SCL_1

DDC_SDA_1

JK3104

JK3102

JK3101

0

000

0

HDMI3

(SIDE)

HDMI2.1

JK3103

DDC_SCL_3

DDC_SDA_3

TMDS Link

DDC_SCL_2

DDC_SDA_2

PHY0_ARC_OUT

DDC_SCL_3

DDC_SDA_3

DDC_SCL_4

DDC_SDA_4

HDMI 2.1 S/W

IC3800

HAWK2

6. HDMI

- 15 -

USB1(SIDE)

USB2.0_1_DM0

USB2.0_1_DP0

USB2(SIDE)

IC1600

SYVL86A

5V / 6A

+5V_USB_1

+5V_USB_2

/USB_OCD2

USB_CTL2

/USB_OCD2

WIFI_DM

WIFI_DP

USB2_2_DM0

USB2_2_DP0

RENESAS MICOM(IC3000)

UART0_TXD/GPIO105

UART0_RXD/GPIO106

SOC_TX

SOC_RX

IC7200

MAX3232CDR

USB2.0

WIFI Combo

BT_RESET

BT_WAKEUP_DEVICE

BT_WAKEUP_HOST

OCP

IC4700

BD2242G

OCP

IC4501

BD2242G

+5V_NORMAL

JK4400

JK4200

USB2.0

Main IC

USB2.0_2_DM1

USB2.0_2_DP1

OCP

IC4700

BD2242G

+5V_NORMAL

USB3(Rear)

+5V_USB_3

USB_CTL2

/USB_OCD2

JK4600

USB2.0_3_DM0

USB2.0_3_DP0

USB2.0

7. USB / Wi-Fi / M-Remote / UART

- 16 -

A10

700

AR2

200

530

540

521

810

121

120

500

570

571

400

920

710

900

800

LV1 LV2

HW1

HS1

HP1

200T

811

EXPLODED VIEW

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.

IMPORTANT SAFETY NOTICE

- 17 -

DISASSEMBLY GUIDE

1

1 1

1

1 1

1

Total Screw No. : 33ea

1. Remove screw 1ea, disassemble power cord from back cover. * Push the latch, separate the stand cover to the top.

Latch : 2 EA

2. Remove screw 4ea, disassemble stand from back cover. * Push the latch, separate the stand cover to the top.

Screw : 4 EA

- 18 -

3. Remove screw 1ea, disassemble power cord from back cover

`

1

2

2 2

2 2 2 2

2

22

1

2

Screw : 1 EA

4. Remove screw 4 EA, disassemble back cover from module.

* Put hand on the marked area( ), separate the back cover to the top.

Screw : 4 EA

Latch : 12ea

- 19 -

5. Remove screw 1ea, disassemble Wi/Jog assy.

1

2

1

2

Slide

Screw : 1ea

6. Remove the latch 2ea, disassemble IR assy.

Latch : 2ea

- 20 -

7. Remove all sort of cable.

8. Disassemble speaker.

- 21 -

9. Remove screw 12ea, disassemble Main PCB and PSU.

1

Screw : 12ea

10. Remove screw 7ea, disassemble stand guide and stand xer.

Screw : 7ea

- 22 -

11. Remove screw 4 EA, disassemble VESA Bracket

1

Screw : 4ea

- 23 -

TROUBLE SHOOTING GUIDE

Contents of Standard Repair Process

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

1

2 No video/No audio 2

3 Picture broken/Freezing 3

4 Color error 4

5

6

7

8

9 Wrecked audio/discontinuation/noise 11

10

11 Magic Remote control operating checking 13

12 Wi-Fi operating checking 14

A. Video error

B. Power error

C. Audio error

D. Function error

No video/Normal audio 1

Vertical/Horizontal bar, residual image,

light spot, external device color error

No power 6

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

No audio/Normal video 10

Remote control & Local switch checking 12

5

7-9

13 External device recognition error 15

14 E. Noise Circuit noise, mechanical noise 16

15 F. Exterior error Exterior defect 17

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

Standard Repair Process

symptom

Error

A. Video error

No video / Normal audio

Established

date

Revised date

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 and so on)

☞A10/A11

Check Power Board

Y

output to Main. (20V, 12V)

Y

Replace Module

Normal Voltage

Replace Power B/D or repair parts

End

Y

N

Replace Main B/D

No video Normal audio

Normal

Audio

Move to No Video/No audio

Y

N

☞A1

Check Vx1 lock voltage

☞A10/A11

0V

N

Check Power Board output to Module

55”/65” : 22V, 12V 77” : 23V, 12V

Normal

Voltage

N

1/17

※Precaution

Always check & record S/W Version and White Balance value before replacing the Main Board

☞A4 & A2

Replace Power B/D or repair parts

Replace Main B/D

Re-enter White Balance value

1

Standard Repair Process

symptom

Error

A. Video error

No video / No audio

Established

date

Revised date

2/17

☞A10/A11

Y

No Video / No audio

Check Power Board output to Main (20V, 12V )

Normal

Voltage?

N

Replace Power B/D or repair parts

Check and replace Main B/D

End

2

Standard Repair Process

☞ A3

Check RF Signal level

Normal Signal?

N

Check RF Cable Connection

1. Reconnection

2. Install Booster

Normal

Picture?

Y

Close

Error

symptom

A. Video error

Picture broken / Freezing

- By using Digital signal level meter

- By using Diagnostics menu on OSD

(All Settings → Programmes → Programme Tuning & Settings → Manual Tuning → Antenna DTV 

Check the signal level)

- Signal Strength (Normal : over 50%)

- Signal Quality (Normal : over 50%)

Check whether other equipments have problem or not.

Y

(By connecting RF Cable at other equipment)

DVD Player ,Set-Top-Box, Different maker TV etc.

☞ A4

N

Normal

Picture?

Contact with signal distributor

or broadcaster (Cable or Air)

Y

N

Check

S/W Version

Revised date

SVC

Bulletin?

Y

S/W Upgrade

Normal

Picture?

Y

Established

date

N

Check Tuner

soldering

N

Replace

Main B/D

3/17

Y

Close

3

Standard Repair Process

☞A6

Check color by input

- External Input

- HDMI

☞A8

Check Test pattern

Error

symptom

Color

error?

Check error color input mode

Y

N

A. Video error

☞ A7

※ Check and

replace Link Cable(Vx1) and contact condition

External

Input

error

Color error

Check external device and cable

Color

error?

N

Y

Replace Main B/D

Established

date

Revised date

External

device/Cable

normal

Color

error?

End

Y

Replace Module

N

Replace Main B/D

4/17

HDMI

error

Check external device and cable

4

N

Request repair

for external

device/cable

N

External

device/Cable

normal

Y

Replace Main B/D

Standard Repair Process

symptom

Vertical/Horizontal bar, Residual image,

Error

A. Video error

Light spot, External device color error

Vertical/Horizontal bar, residual image, light spot

☞A6

Check color condition by input

- External Input

- AV / Component

- HDMI

☞A8

Check Test pattern

Screen

normal?

N

Replace module

Check external

Y

device connection condition

Normal?

N

Request repair

for external device

External device screen error-Color error

Check screen condition by input

- External Input

- AV/Component

- HDMI

Check S/W Version

Check

version

Y

S/W Upgrade

N

☞ A7

Check and

Y

replace Link Cable(Vx1)

External

Input error

Established

date

Revised date

Y

N

Replace Main B/D

Screen

normal?

End

Connect other external device and cable

(Check normal operation of External Input, HDMI/DVI by connecting Jig, pattern

Generator ,Set-top Box etc.

Screen

normal?

Request repair for external device

N

Y

5/17

Replace

Module

N

Screen

normal?

Y

End

Replace Main B/D / Module

Normal

screen?

End

N

Y

5

HDMI

Connect other external device and cable

(Check normal operation of External Input, Component,

AV and HDMI by connecting

Jig, pattern Generator ,Settop Box etc.

Y

Screen

normal?

N

Replace Main B/D / Module

Standard Repair Process

☞A9

Check Power Indicator

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

Error

symptom

Power

LED On?

Check Power cord was inserted properly

Normal?

Y

N

Y

B. Power error

☞A10/A11

Check ST-BY (7.8V)

No power

DC Power on by pressing Power Key On Remote control

☞A10/A11

Measure each output voltage of Power B/D

Y

Normal

Y

voltage?

N

Established

date

Revised date

Normal

operation?

Normal

voltage?

Replace Power B/D

N

Y

N

☞A10/A11

Check Power On ‘”High”

Replace Main B/D

OK?

Replace Main B/D

Y

6/17

Replace

Power B/D

Close

Replace Power B/D

6

Standard Repair Process

Check outlet

Check Power cord

Check for all 2- phase power out

Error

symptom

Error?

Fix Power cord & Outlet and check each 2 phase out

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

N

Y

B. Power error

☞A12

Check Power Off Mode

☞A10/A11

(If Power Off mode is not displayed) Check Power B/D output voltage

※ Caution Check and fix exterior of Power B/D Part

CPU

Abnormal

1

Replace Power B/D

Established

date

Revised date

Replace Main B/D

Normal

voltage?

Y

N

Replace Power B/D

Replace Main B/D

Normal?

N

7/17

Y

End

7

Standard Repair Process

symptom

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

Error

B. Power error

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

Power Off History Explanation Action contents

Power off by CPU Abnormal status

1. Power off (Last Cold, Last Cool, Last Warm)

POWER_OFF_BY_CPU_ABNORMAL

POWER_OFF_BY_CPUCMD Power off by main SoC command.

POWER_OFF_BY_ABN

POWER_OFF_BY_KEYTIMEOUT

POWER_OFF_BY_ACDET

POWER_OFF_BY_5VMNT

POWER_OFF_BY_NO_POLLING

POWER_OFF_BY_REMOTE_KEY2

POWER_OFF_BY_INV_ERROR Power off by OLED module error

POWER_OFF_BY_ONRF_FAIL

POWER_OFF_BY_PNWASHFAIL Power off by panel noise wash function fail case. (OLED)

POWER_OFF_BY_RESUME_FAIL

Condition : When power on and checking Power on Mode, abnormality appears.

2. Power off in CPU Abnormal Case (Exception)

- Release Mode : Reboot

- Debug/Event Mode : Power off

Case1 : Pipe line overflow Case2 : reboot to suspend Fail Power off when TV is not turned off during a certain time Result : micom force to trigger TV power off. Condition : When pressing power key while power on/off status, CPU does not response within 8 seconds or call the WDT timer API. Power off by not detecting AC (abnormal case) Result : micom triggers TV power off

Condition : Power detect port drops to low while power on status.

Power off by not unstable AC power detect. Result : micom check the stable power. Condition : When AC on or DC on, stabilization check routine (Power Detect High Check) fail after multi power on. Power off when receiving no ack Debug Status : Release Mode Result : TV power off/on (Reboot) Condition : There is no I2C response from CPU for 15 seconds.

 if warm standby, power off occurs.

similar with POWER_OFF_BY_KEYTIMEOUT, but different concept. Result : micom force to trigger TV power off within 4 seconds. Condition : When TV power on/off, CPU does not response within 4 seconds, and then pressing power key.

Result : Reboot Condition : OLED module compensation is running but fails.

Power off by resume fail when dc on case. If occur the resume fail, TV will be rebooted.

8

Established

date

Revised date

8/17

Check & Change Main B/D

Normal Case

Check & Change Main B/D

Check & Change OLED

Module

Check & Change OLED

Module

Check & Change OLED

Module

Check & Change Main B/D

Standard Repair Process

symptom

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

Error

B. Power error

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

Power Off list Explanation Action contents

Power off by Micom Reset

POWER_OFF_BY_RESET

POWER_ON_BY_REMOTE_KEY Power on by remote Power Key.

POWER_OFF_BY_OFF_TIMER Power off by Off timer

POWER_OFF_BY_SLEEP_TIMER Power off by sleep timer

POWER_OFF_BY_INSTOP_KEY Power off by Instop Key

POWER_OFF_BY_AUTO_OFF

POWER_OFF_BY_ON_TIMER

POWER_OFF_BY_RS232C Power off by RS232C command

POWER_OFF_BY_RESREC

POWER_OFF_BY_SWDOWN Power off by software download

It's not recommend. Please use POWER_OFF_BY_REQUEST_RESET.

RESULT : Reset the TV and init time data.

Power off by auto off function

1. When it lasts for 15 minutes that no signal and no remote key input.

2. When screen mute status lasts for 2 hours. Power off by On timer

Power off when no remote and local key input for 2 hours after power on by On timer.

Power off by reserved recording Power off automatically after recording finishes after TV turns on by reservation recording from power off status.

Established

date

Revised date

9/17

Normal Case

POWER_OFF_BY_LOCAL_KEY Power off by local key

POWER_OFF_BY_COMP_END

POWER_OFF_BY_HDMI_CEC Power off by HDMI CEC command

POWER_OFF_BY_PNWASHSTART Power off for starting OLED panel noise function in warm state.

POWER_OFF_BY_PNWASHDONE Power off by panel noise wash function completed.

POWER_OFF_BY_COOLING Power off for cool down the OLED t-con.

POWER_OFF_BY_EDID_WRITE Power off by EDID write done.

Result : Power off Condition : OLED threshold voltage degradation completes.

9

Standard Repair Process

No audio Screen normal

Error

symptom

☞A13

Check Sound menu

→ Internal TV speaker

or not

C. Audio error

No audio / Normal video

Internal TV

Speaker

Select Internal TV Speaker

Y

N

☞A14 & A10/A11

Check audio B+ voltage(20V) of Power Board

Replace Power Board or repair parts

Established

date

Revised date

Normal voltage

N

10/17

Y

Check Speaker cable connection

Disconnection

Y

Connect Speaker cable

10

N

Replace Main B/D

End

Standard Repair Process

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

Check input signal

- RF

- External Input signal

Error

symptom

Signal

normal?

N

C. Audio error

Wrecked audio / Discontinuation / Noise

Y

(When RF signal is not received)

Request repair to external

cable/ANT provider

(In case of External Input

signal error)

Check and fix external device

Wrecked audio/ Discontinuation/

Noise for

all audio

Wrecked audio/ Discontinuation/

Noise only

for D-TV

Wrecked audio/ Discontinuation/

Noise only for

Analog

Wrecked audio/ Discontinuation/

Noise only for External Input

Established

date

Revised date

Check and replace speaker and cable

Replace Main B/D

Connect and check other external device

☞A14 & A10/A11

Check audio B+ Voltage (20V)

Normal

voltage?

N

Replace Power B/D

Replace Main B/D

Normal audio?

N

Y

11/17

Y

End

Check and fix external device

11

Standard Repair Process

Error

symptom

Remote control & Local switch checking

D. Function error

1. Remote control(R/C) operating error

☞A15

Check R/C itself

Operation

Check R/C Operating

When turn off light

in room

If R/C operate,

Explain the customer

cause is interference

from light in room.

Normal

operating?

N

Check & Replace

Baterry of R/C

operating?

Replace R/C

Check & Repair

Y

Cable connection Connector solder

Normal

N

Y

Close

Normal

operating?

Y

Close

☞A15

N

Check

B+ 3.5V

on Main B/D

☞A10/A11

Check 7.8V on Power B/D

(Power B/D don’t have problem)

Established

date

Revised date

Normal

Voltage?

Replace Power B/D or

Replace Main B/D

Y

N

☞A15

Check IR

Output signal

12/17

Replace

Main B/D

Normal Signal?

N

Repair/Replace

IR B/D

Y

12

Standard Repair Process

Error

symptom

Magic Remote control operating checking

D. Function error

2. Magic Remote control operating error

☞A4

Check the

Instart menu

RF Receiver ver

is “00.00”?

Y

☞A16

Check & Repair

RF assy

connection

☞A4

RF Receiver ver

is “00.00”?

Y

N

Check Magic

remote control

itself Operation

Close

Normal

operating?

Check & Replace Battery

of Magic remote control

Normal

operating?

N

Replace

Magic remote

control

Y

N

Y

Press the

wheel

Close

Established

date

Revised date

Is show ok

message?

Y

Close

Is show ok

message?

Close

Y

Turn off/on the

N

set and press

the wheel

N

13/17

Press the back key about 5sec

Download the Firmware

Instart Memu

 12.RF Remote control Test  Receiver Firmware Download

•If you conduct the loop at 3times, change Magic remote control

13

Standard Repair Process

Error

symptom

3.Wi-Fi operating error

Check the

Instart menu

☞A4

Wi-Fi MAC

is “NG”?

☞A16

Check & Repair

Wi-Fi cable

connection

☞A4

Wi-Fi MAC

is “NG”?

Y

D. Function error

Wi-Fi operating checking

☞A16

N

Check the Wi-Fi wafer

Close

Established

date

Revised date

Normal

Voltage?

Y

Close

N

14/17

Replace

Main B/D

Replace the Wi-Fi assy

Y

14

Standard Repair Process

Check input signal

Error

symptom

Signal

input?

Y

N

Check and fix

external device/cable

D. Function error

External device recognition error

Check technical information

- Fix information

- S/W Version

Technical

information?

Fix in

accordance

with technical

information

Y

N

Established

date

Revised date

External Input

Recognition error

HDMI/DVI,

Optical Recognition

error

15/17

Replace Main B/D

15

Standard Repair Process

Identify

noise type

Error

symptom

Circuit

noise

Mechanical

noise

※ 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.

Check location

of noise

Check location of noise

Circuit noise, Mechanical noise

E. Noise

Replace Power B/D

Established

date

Revised date

※ 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)

16/17

16

Standard Repair Process

Error

symptom

Zoom part with exterior damage

F. Exterior defect

Exterior defect

Module

damage

Cabinet

damage

Remote

control

damage

Replace module

Replace cabinet

Replace remote control

Established

date

Revised date

17/17

Stand

dent

Replace stand

17

Contents of Standard Repair Process Detail Technical Manual

No. Error symptom Content Page Remarks

1

A. Video error_ No video/Normal audio

2 Check White Balance value A2

3

A. Video error_ video error /Video

4 Version checking method A4

lag/stop

5 Tuner Checking Part A5

A. Video error_Vertical/Horizontal bar,

6

residual image, light spot

7

A. Video error_ Color error

8 Adjustment Test pattern - ADJ Key A8

9

Defected Type caused by Cable / Main Board / Module

Check Vx1 lock A1

Tuner input signal strength checking method A3

Connection diagram A6

Check Link Cable(Vx1) reconnection condition

Example of Symptom (Image error) A-1/10

Example of Symptom (Image error) A-2/10

Example of Symptom (Main) A-3/10

Example of Symptom (Main) A-4/10

Example of Symptom (Main) A-5/10

Example of Symptom (Module) A-6/10

Example of Symptom (Module) A-7/10

A7

Example of Symptom (Module) A-8/10

Example of Symptom (Module) A-9/10

Example of Symptom (Power board) A-10/10

Continue to the next page

Contents of Standard Repair Process Detail Technical Manual

Continued from previous page

No. Error symptom Content Page Remarks

10

B. Power error_ No power

11 Check power input Voltage & ST-BY 3.5V A10

B. Power error_Off when on, off

12

while viewing

13

C. Audio error_ No audio/Normal video

14

15

D. Function error

16 Wi-Fi/Motion Remote operation checking method A16

17

E. Etc

18 Check items after Main B/D replacement A20

Check Power Indicator A9

POWER OFF MODE checking method A12

Checking method in menu when there is no audio A13

Voltage and speaker checking method when there is no audio

Remote control operation checking method A15

How to use the Service remote control A17-A19

A14

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_No video/Normal audio

Check Vx1 lock /Check BDP Point

Established

date

Revised

date

A1

R7624 : 0[V]

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

Check a voltage of R7632 after turn on the TV. If the voltage is high, BDP issue.(NG)

A1

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_No video/Normal audio

Check White Balance value

Established

date

Revised

date

A2

1. Press ‘ADJ’ button on Factory Service Remote control.

2. Enter into ‘12.White Balance’

3. After recording the R, G, B (Gain, Cut) value of each Color Temp(Cool/Medium/Warm), re-enter the value after replacing Main board.

A2

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_Video error, video lag/stop

Tuner input signal strength checking method

1. Press ‘MENU’ button on Factory Service remote control.

2. Enter into Manual Tuning menu as below. All Settings  Programmes  Programme Tuning & Settings

 Manual Tuning

3. Check the signal level.

Established

date

Revised

date

A3

When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.)

A3

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Version

A. Video error_Video error, video lag/stop

Version checking method

Established

date

Revised

date

A4

1. Press ‘IN START’ button on Factory Service remote control.

2. Check S/W Version

A4

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_Video error, video lag/stop

Tuner checking part

Established

date

Revised

date

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.

A5

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error _Vertical/Horizontal bar,

Residual image, Light spot

Connection diagram

Established

date

Revised

date

A6

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

A6

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Check Link Cable(Vx1) reconnection condition

A. Video error_Color error

Established

date

Revised

date

A7

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

A7

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_Color error

Adjustment Test pattern - ADJ Key

Established

date

Revised

date

A8

P-ONLY -> HDMI HOT -> CH + or -

Checking item :

1. Defective pixel

2. Residual image

3. MODULE error (ADD-BAR,SCAN BAR..)

4. Video error (Classification of MODULE or Main-B/D!)

A8

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Item

Cable Color smear

Cable

Cable Screen darkness

Symptom

Name

R Color

Excessive

Cause Symptom Image

Poor broken pin of FFC cable

Color is Excessive due to FFC Cable

Contact.

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 - 1/10

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Item

Cable Color spread Vx1 cable connection problem

Symptom

Name

Cause Symptom Image

Cable Screen stop

Due to foreign substance withi nLVDS

cable PIN

A - 2/10

Appendix. Examples of Symptoms(Main)

Check parts by symptom

Item

Main Screen noise Bit noise from horizontal screen

Main Screen noise

Main Dark picture Dark left-side screen

Symptom

Name

Cause Symptom Image

Broken screen due to

Main IC problem

Main Broken picture

Picture problem due to tuner

Top/bottom screen part

Inner side quality problem

A - 3/10

Appendix. Examples of Symptoms(Main)

Check parts by symptom

Item

Main Broken screen Broken screen in a horizontal manner

Main Screen spread Screen corner appears blurry

Main Color Spread Color spread on the screen

Symptom

Name

Cause Symptom Image

Main Blurry Screen Blurry picture on the screen

A - 4/10

Appendix. Examples of Symptoms(Main)

Check parts by symptom

Item

Main Broken picture

Main

Symptom

Name

Right-side

Screen

problem

LG logo

Screen problem

Cause Symptom Image

No problem at the initial stage,

G-color spread after 10 minutes

Right-side screen problem

Screen picture spread problem

Main

Right-side

picture problem

No problem at the initial stage.

During Heat run, right-side picture

problem

A - 5/10

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

Module Vertical bar

Module image broken Source Driver issue

Module White dot White dot cause by panel issue

Symptom

Name

Cause Symptom Image

Un-repairable Cases In this case please exchange the module

Module Line Dim Vertical Line cause by source drive IC

A - 6/10

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

Module Burnt

Module Horizon line Module has damaged

Module Line Defect

Symptom

Name

Cause Symptom Image

Module burnt

Module has damaged

Un-repairable Cases

Module Press damage

In this case please exchange the module

A - 7/10

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

Module Vertical bar

Module

Module Green light

Symptom

Name

Vertical Noise

Brightness

difference

Cause Symptom Image

Vertical Bar cause by source drive IC

Un-repairable Cases In this case please exchange the module

Compensation error when Power On/off

Module Color difference

Color difference between screen cause

by compensation error

A - 8/10

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

Module No image

Module Burnt

Module Mura

Symptom

Name

Cause Symptom Image

Module has damaged

(Can’t fix it)

Burnt

(Can’t fix it)

Screen Mura

(Can’t fix it)

A - 9/10

Appendix : Exchange Power Board (PSU)

No Light

No picture/Sound Ok

A - 10/10

Standard Repair Process Detail Technical Manual

Error

symptom

Content

B. Power error _No power

Check Power Indicator

Established

date

Revised

date

A9

Stand-by condition : Red Power On condition : Turn Off

※ Power indicator control Menu  All Settings  General  Standby Light  ON/ Off

A9

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Check 12VM line for ST-BY Voltage ST-BY status : 7.8V, Power on(DC On) status : 12V

B. Power error _No power

Check power input voltage and ST-BY 3.5V

Established

date

Revised

date

P201

P251

A10

Power To Main B’d

Power To Module

A10

Standard Repair Process Detail Technical Manual

Error

symptom

Content

B. Power error_Off when on, off whiling viewing

POWER OFF MODE checking method

Established

date

Revised

date

A12

1. Press ‘IN START’ button on Factory Service remote control

2. Check the entry into ‘3. Power On/Off Status’.

A12

Standard Repair Process Detail Technical Manual

Error

symptom

Content

C. Audio error_No audio/Normal video

Checking method in menu when there is no audio

Established

date

Revised

date

A13

1. Press ‘MENU’ button.

2. Select ‘All Settings’

3. Select ‘Sound’ menu and ‘Sound Out’.

4. Select Internal TV Speaker.

A13

Standard Repair Process Detail Technical Manual

1

SPK_R-_FT

2

SPK_R+_FT

3

SPK_L-_FT

4

SPK_L+_FT

5

SPK_R-_CT

6

SPK_R+_CT

7

SPK_L-_CT

8

SPK_L+_CT

Error

symptom

Content

P201

C. Audio error_No audio/Normal video

Voltage and speaker checking method

when there is no audio

②

①

Established

date

Revised

date

A14

Checking order when there is no audio

1.Check the contact condition of or 13.2V connector of Main Board.

2. Measure 20V input voltage for Audio AMP supplied from Power board. (If there is no input voltage, remove and check the harness)

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.

A14

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Remote control operation checking method

D. Function error

Established

date

Revised

date

A15

① IR & EYE Sensor

Eye LED IR

②

③

Pin Pin name

1 3.5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND

5

6 3.5V_WIFI

7

8 GND 9 COMBO_RESET

10

11 GND 12 EYE_SDA 13 EYE_SCL 14 GND 15 IR 16 LED_R

17 GND 18 +3.5V_ST 19 KEY2 20 KEY1

WOL/WIFI_POWER

_ON_JACK

WIFI_SUSPEND/RE

SUME

BT_WAKEUP_HOS

T

1. Check IR cable condition between IR & Main board.

2. Check +3.5V_ST on pin 4(③)

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

A15

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Wi-Fi / Motion Remote operation checking method

D. Function error

Established

date

Revised

date

A16

① Wifi & BT Front

Wifi & BT Rear

②

Checking order

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

2. Check the 3.5V on the terminal 1, 6.

Pin Pin name

1 3.5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND

5

6 3.5V_WIFI

7

8 GND 9 COMBO_RESET

10

11 GND 12 EYE_SDA 13 EYE_SCL 14 GND 15 IR 16 LED_R

17 GND 18 +3.5V_ST 19 KEY2 20 KEY1

WOL/WIFI_POWER

_ON_JACK

WIFI_SUSPEND/RE

SUME

BT_WAKEUP_HOS

T

A16

Standard Repair Process Detail Technical Manual

Error

1. How to access the remote control

symptom

Content

How to use the Service remote control

E.Etc

0 4 1 3

Established

date

Revised

date

A17

0 4 1 3

A17

Standard Repair Process Detail Technical Manual

Error

symptom

Content

2. Remote control part definition

POWER Power On/Off

How to use the Service remote control

E.Etc

[ETC] Each time pressing the KEY button, Mode gets changed to ETC and P-ONLY each time

Established

date

Revised

date

A18

ETC (Added Function)

P-ONLY (Added Function)

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

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)

All KEY function [PIP PR-][PIP PR+][SWAP]

[PIP INPUT][DVI] KEY Function

Changed to factory mode

All KEY function &[INFO][STILL][HDMI HOT][USB HOT][HDMI4] KEY Action

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

Custom PIcture1=>Custom Picture2=>Bright Picture

Access to the Simplink-connected device

EYE

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

Digital EYE function ON/OFF

For some Model, access to the Test Pattern

A18

Standard Repair Process Detail Technical Manual

Error

symptom

Content

How to use the Service remote control

E.Etc

Established

date

Revised

date

A19

B-TOOTH (Added function)

IN-START

ADJ

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) MUTE Mute function (0 Volume)

IN-STOP SET to factory mode

VOL + - Volume Up/Down

Connected to Blue-Tooth

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

POWER OFF STATUS ex) Shows power-off status

Test Pattern (Off=>White=>Red=>Green=>Blue=>Black=>Pattern=>Off) Change

Moves forward/backward of recorded contents

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) DVI (Add function) Connects to DVI

Connects to HDMI 1,2,3,4

A19

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Check items after Main B/D replacement

Check items afer Main B/D(Model Number D/L, White Balance)

1. Press the Service remote control instart Key.

E.Etc

Established

date

Revised

date

No.7 Select Model Number D/L

- Key in the model name and serial number after checking the ID label on the back cover.

A20

2. Press the Service remote control ADJ Key.

A14

A20

No.13 Select White Balance

- Record the R, G, B (GAIN, Cut) value of the color temperature before main board

replacement.

After replacing the main board, key in the recorded value.

Smart JIG Power Diagnosis

Muitl Gender Guide

(P/N : RAD33187801) (P/N : RAD32507801)

A21

Power Board Muitl Gender JIG Diagram (P/N: RAD33187801)

18 Marking check

New JIG

No Marking

OLD JIG

28Pin

18Pin

24Pin

13Y/14Y

12Y

24Pin

15Y (LF/UF Series)

18Y/19Y SK80/UK89 SK85/SK96 SK95/SK99 SM90/SM98

24Pin

18Y/19Y UK63/UK64 UK65/UK68 UK7050 UM73/UM74 UM75/UM76/ UM79/UM80

16Y (OLED B6)

24Pin

18Y/19Y LK57,32/43/49LK54 32LK61/32LK62

43/49LK61

LM57/LM63

15Y (OLED)

24Pin

NC

17/18Y /19Y W7 B8, C8 E8, G8 W8 B9/C9/ E9/W9

24Pin

16Y (OLED)

28Pin

17Y/18Y/19Y (OLED)

24Pin

16Y/17Y/18Y/19Y

18Pin

(UH/UJ/UK/SK/ /SM

24 Marking Check

28Pin

Cable Connection

17Y/18Y

(SJ/UJ/UK/SK)

12Pin

16/18Y/19Y (UH/UK/UM)

16Y/17Y/18Y/19Y

(LH/LJ/LK/LM)

12Pin

Includes 49UJ63

28Pin

16Y/17Y (UH/SJ)

28Pin

16Y (UH)

18Y/19Y UK74,UK75 UK77,UK78 SK79 SM80/SM86

Power Board Muitl Gender JIG Diagnostic model List

<15Y/16Y/17Y/18Y/19Y OLED Model, 16Y/17Y/18Y/19Y LED Model>

Year Product Model

EG92/EG93/EG94

‘15 OLED

EG96

EF95

OLED

‘16

LED

‘17 OLED

’17 LED

‘18 LED

‘18 OLED

‘19 LED

‘19 OLED

B6, C6 E6, G6

UH95/UH96, UH85/UH93 UH77/UH87, UH75/UH76

UH65/UH68, LH68, LH66, LH60,LH54

B7, C7, E7, G7, W7

SJ95/UJ98, SJ85/UJ94

SJ80, UJ77, UJ75/UJ78

UJ65/UJ68, UJ63/UJ67

LJ61/LJ68, LJ55/LJ58

SK80/SK85/SK95

UK78/UK75/UK77/SK79

UK63/UK64/UK65/UK68/UK7050

LK57, 32/43/49LK54, 32LK61/62, 43/49LK61

B8, C8, E8, G8, W8

SM80/SM85/SM86

UM73/UM74/UM75/UM76/UM79/UM80

LM57/LM63

B9/C9/E9/W9

Power Board Muitl Gender How to Connect

1

▶ Power Board Muitl Gender JIG

2

2013

“A:

2014

▶ Connect the Muiti Gender to the connector (black) as shown in picture 2 of the Smart JIG.

LCD POWER”

Smart Jig Voltage Setting

1

▶ Check power board voltage.

※ Note on set up

(The correct power diagnosis can be made only if it is set correctly.)

- 24V Power Board : Change the switch to 24V of Smart Jig Voltage

- 20V Power Board : Change the switch to 24V of Smart Jig Voltage

2

▶ Switch the product S/W in JIG to LCD.

▶ LCD MODEL Check the power voltage

and switch to the correct voltage.

- 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage

Power B/D Smart Jig Voltage Switch

24V

20V

13.2V/18V

24V

20V

24V

`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (1)

1

▶ Check power board voltage.

3

2

▶ Switch the product S/W in JIG to LCD.

▶ LCD MODEL Check the power voltage

and switch(24V) to the correct voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

4

▶ Disconnect the Main Board 24Pin Power Cable connector.

▶ Connect the 24Pin Power Cable connector to the Muitl

Gender JIG 24Pin connector

`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (2)

5 6

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y OLED(B6) Power Board Diagnostic method

1

3

▶ Connect the 24Pin Power Cable connector to the Multi gender JIG 24Pin connector.

2

▶ Switch the LCD MODEL S/W to 24V by checking the power voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y OLED(C6) Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Smart JIG: Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 24Pin Power Cable connector.

4

▶ Connect the 24Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

`16Y OLED(E6) Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 24Pin Power Cable connector.

4

▶ Connect the 24Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y OLED(G6) Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 24Pin Power Cable connector.

4

▶ Connect the 24Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`17Y OLED(B7/C7/E7/G7) Power Board Diagnostic method

1

▶ Disconnect the Main Board 28Pin Power Cable connector.

3

2

▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector

4

▶ Switch the LCD MODEL S/W to 20V by checking the power voltage.

▶ Fix the LCD MODEL switch to 20V.(Smart JIG)

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`17Y OLED(W7) Power Board Diagnostic method

1

▶ Disconnect the Main Board 24Pin Power Cable connector.

3

2

▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 28Pin connector

4

▶ Switch the LCD MODEL S/W to 20V by checking the power voltage.

▶ Fix the LCD MODEL switch to 20V.(Smart JIG)

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y/`17Y LED 18Pin Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 18Pin Power Cable connector.

4

▶ Connect the 18Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y LED(UH95/UH96) Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 28Pin Power Cable connector.

4

▶ Connect the 28Pin Power Cable connector

to the Muitl Gender JIG 28Pin connector

▶ When the OK(24V,12V) LED turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y/`17Y LED(UH85/UH93) Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 28Pin Power Cable connector.

4

▶ Connect the 28Pin Power Cable connector

to the Muitl Gender JIG 28Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y/`17Y LED 12Pin Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 12Pin Power Cable connector.

4

▶ Connect the 12Pin Power Cable connector

to the Muitl Gender JIG 12Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`16Y LED 12Pin Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 24V.(Smart JIG)

2

▶ Disconnect the Main Board 12Pin Power Cable connector.

4

▶ Connect the 12Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

`17Y LED 28Pin Power Board Diagnostic method

1

3

▶ Check power board voltage.

▶ Fix the LCD MODEL switch to 20V.(Smart JIG)

2

▶ Disconnect the Main Board 28Pin Power Cable connector.

4

▶ Connect the 28Pin Power Cable connector

to the Muitl Gender JIG 28Pin connector

▶ When the OK LED(24V,12V) turns on, Power Board is normal.

▶ When the NG LED turns on, the Power Board can be judged as defective.

LG OLED55B9PUA, OLED65B9PUA Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual