LG-OLED

CONFIDENTIAL

OLED TV SERVICE MANUAL CHASSIS : EA71B

MODEL : OLED55B7P MODEL : OLED65B7P : OLED65B7P

OLED55B7P-U OLED65B7P-U

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

P/NO : MFL69826603 (1702-REV00) Any repro reproducti duction, on, dupli duplication cation , distri distribution bution (inclu (including ding by way of email, facsim facsimile ile or other elect electronic ronic means means), ), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

Copyright © 2017 LG Electronics Inc. All rights reserved.

CONTENTS

CONTENTS CONTEN TS ................. .................................... ...................................... ...................................... ....................................... .................... 2 SAFETY PRECAUTIONS PRECAUTIONS ................... ....................................... ....................................... ................................. .............. 3 SERVICING SERVI CING PRECAUT PRECAUTIONS IONS ................. ..................................... ....................................... .............................. ........... 4 SPECIFICA SPECIFIC ATION .................. ..................................... ...................................... ....................................... ............................... ...........6 6 SOFTWARE SOFTW ARE UPDA UPDATE TE ................... ....................................... ....................................... ...................................... ..................... 9 BLOCK DIAGRAM .................. ..................................... ...................................... ....................................... ......................... ..... 10 EXPLODED EXPLODE D VIEW ................... ...................................... ...................................... ....................................... ......................... ..... 16 DISASSEMBL DISASSE MBLY Y GUIDE ................. .................................... ....................................... ...................................... .................. 17 TROUBLE TROUBL E SHOOTING GUIDE ................. .................................... ............................... ............ APPENDI APPENDIX X

CONTENTS

CONTENTS CONTEN TS ................. .................................... ...................................... ...................................... ....................................... .................... 2 SAFETY PRECAUTIONS PRECAUTIONS ................... ....................................... ....................................... ................................. .............. 3 SERVICING SERVI CING PRECAUT PRECAUTIONS IONS ................. ..................................... ....................................... .............................. ........... 4 SPECIFICA SPECIFIC ATION .................. ..................................... ...................................... ....................................... ............................... ...........6 6 SOFTWARE SOFTW ARE UPDA UPDATE TE ................... ....................................... ....................................... ...................................... ..................... 9 BLOCK DIAGRAM .................. ..................................... ...................................... ....................................... ......................... ..... 10 EXPLODED EXPLODE D VIEW ................... ...................................... ...................................... ....................................... ......................... ..... 16 DISASSEMBL DISASSE MBLY Y GUIDE ................. .................................... ....................................... ...................................... .................. 17 TROUBLE TROUBL E SHOOTING GUIDE ................. .................................... ............................... ............ APPENDI APPENDIX X

SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical electrical and mechanical mechanical parts in this chassis have special special safety-related safety-related characteristics. These parts are are identified identified by in the Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.

An isolation Transformer should always be used 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.

Do not use a line Isolation Transformer 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 Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer, always perform an AC leakage current check 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 abno rmalit y exist s that must be correc ted befo re the receiver is returned to the customer.

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 CAUTION 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. CAUTION 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 remove the test receiver receiver ground ground lead last. 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 CAUTION 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, CAUTION 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 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, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil. 6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature (500 °F to 600 °F) b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts. c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder ows onto and around both the compo nent lead and the foil. CAUTION:: Work quickly to avoid overheating the circuit CAUTION board printed foil. d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.

IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the cir cuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. 2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC. Replacement 1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor Removal/Replacement 1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. 3. Bend into a "U" shape the replacement transistor leads. 4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection. Power Output, Transistor Device Removal/Replacement 1. Heat and remove all solder from around the transistor leads. 2. Remove the heat sink mounting screw (if so equipped). 3. Carefully remove the transistor from the heat sink of the circuit board. 4. Insert new transistor in the circuit board. 5. Solder each transistor lead, and clip off excess lead. 6. Replace heat sink. Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body. 2. Bend the two remaining leads perpendicular y to the circuit board. 3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. 4. Securely crimp each connection and solder it. 5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder. Fuse and Conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top.

3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered. At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary). 2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern. 3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. 4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire. At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens. 2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern. 3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION:: Be sure the insulated jumper wire is dressed so the CAUTION it does not touch components or sharp edges.

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

1. Application range

3. Test method

This specification is applied to the OLED TV used EA71E chassis.

2. Test condition

(1) Performance: LGE TV test method followed (2) Demanded other specification - Safety : UL, CSA, CE, IEC specification - EMC : FCC, ICES, CE, IEC specification

Each part is tested as below without special appointment. (1) Temperature : 25 ºC ± 5 ºC(77 ± 9 ºF) , CST : 40 ºC ± 5 ºC (2) Relative Humidity: 65 % ± 10 % (3) Power Voltage : Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models. (4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM. (5) The receiver must be operated for about 5 minutes prior to the adjustment.

4. General Specification No

Item

Specication

1

Market

North America

2

Broadcasting system

ATSC / NTSC-M, 64 & 256 QAM

3

Available Channel

VHF : 02~13

Remark

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

Side, Support 6Gbps

HDMI 2

PC / DTV format

Side, Support 6Gbps, Support ARC

HDMI 3

PC / DTV format

Side, Support 6Gbps

HDMI 4

PC / DTV format

Side, Support 6Gbps

7

Audio Input

AV Audio / DVI Audio

Rear(AV Gender), AV and DVI use same jack

8

SPDIF out(1EA)

Optical Audio out

Rear (1EA),

9

USB Input(3EA)

EMF, DivX HD, For SVC (download)

JPEG, MP3, DivX HD Side(1EA), Rear(2EA)

5. External Input Support Format 5.1. HDMI Input (PC/DTV) No.

Resolution

H-freq(kHz)

V-freq.(kHz)

Pixel clock(MHz)

Proposed

HDMI-PC 1

640*350

31.46

70.09

25.17

EGA

2

720*400

31.46

70.08

28.32

DOS

3

640*480

31.46

59.94

25.17

VESA(VGA)

4

800*600

37.87

60.31

40

VESA(SVGA)

5

1024*768

48.36

60.00

65

VESA(XGA)

6

1360*768

47.71

60.01

84.75

VESA(WXGA)

7

1152*864

54.34

60.05

80

VESA

8

1280*1024

63.98

60.02

109.00

SXGA

9

1920*1080

67.5

60

158.40

WUXGA (Reduced Blanking)

10

1920*1080

135

120

297

11

3840*2160

54

24.00

297.00

UDTV 2160P

12

3840*2160

56.25

25.00

297.00

UDTV 2160P

13

3840*2160

67.5

30.00

297.00

UDTV 2160P

14

4096*2160

53.95

23.97

296.70

UDTV 2160P

15

4096*2160

54

24

297

UDTV 2160P

Support to HDMI-PC

No.

Resolution

H-freq(kHz)

V-freq.(kHz)

Pixel clock(MHz)

Proposed

DTV 1

640*480

31.46

59.94

25.12

SDTV 480P

2

640*480

31.5

60.00

25.12

SDTV 480P

3

720*480

15.73

59.94

13.50

SDTV, DVD 480I(525I)

4

720*480

15.75

60.00

13.51

SDTV, DVD 480I(525I)

5

720*576

15.62

50.00

13.50

SDTV, DVD 576I(625I) 50Hz

6

720*480

31.47

59.94

27

SDTV 480P

7

720*480

31.5

60.00

27.02

SDTV 480P

8

720*576

31.25

50.00

27

SDTV 576P

9

1280*720

44.96

59.94

74.17

HDTV 720P

10

1280*720

45

60.00

74.25

HDTV 720P

11

1280*720

37.5

50.00

74.25

HDTV 720P

12

1920*1080

28.12

50.00

74.25

HDTV 1080I

13

1920*1080

33.72

59.94

74.17

HDTV 1080I

14

1920*1080

33.75

60.00

74.25

HDTV 1080I

15

1920*1080

26.97

23.97

63.29

HDTV 1080P

16

1920*1080

27.00

24.00

63.36

HDTV 1080P

17

1920*1080

33.71

29.97

79.120

HDTV 1080P

18

1920*1080

33.75

30.00

79.20

HDTV 1080P

19

1920*1080

56.25

50.00

148.5

HDTV 1080P

20

1920*1080

67.43

59.94

148.35

HDTV 1080P

21

1920*1080

67.5

60.00

148.50

HDTV 1080P

22

1920*1080

112.5

100

297.00

HDTV 1080P

23

1920*1080

134.86

119.88

296.70

HDTV 1080P

24

1920*1080

135.00

120

297

HDTV 1080P

25

3840*2160

53.95

23.98

296.70

UDTV 2160P

26

3840*2160

54

24.00

297.00

UDTV 2160P

27

3840*2160

56.25

25.00

297.00

UDTV 2160P

28

3840*2160

61.43

29.97

296.70

UDTV 2160P

29

3840*2160

67.5

30.00

297.00

UDTV 2160P

30

3840*2160

112.5

50.00

594

UDTV 2160P

31

3840*2160

134.86

59.94

593.40

UDTV 2160P

32

3840*2160

135

60.00

594

UDTV 2160P

33

4096*2160

53.95

23.98

296.70

UDTV 2160P

34

4096*2160

54

24.00

297

UDTV 2160P

35

4096*2160

56.25

25.00

297

UDTV 2160P

36

4096*2160

61.43

29.97

296.70

UDTV 2160P

37

4096*2160

67.5

30.00

297

UDTV 2160P

38

4096*2160

112.5

50.00

594

UDTV 2160P

39

4096*2160

134.86

59.94

593.40

UDTV 2160P

40

4096*2160

135

60.00

594

UDTV 2160P

Spec. out but display

When HDMI1,2,3,4 UHD DEEP COLOUR ON

When HDMI1,2,3/4 UHD DEEP COLOUR ON

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

2. NSU (This Function is needed to connect to the internet) (1) Menu -> All Settings -> General -> About This TV

(3) Click [YES]: initiate the download and install of the update. (2) Click [CHEK FOR UPDATES] : system check newest version

(4) Click [Check Now]: move to “About This TV” page for update (5) TV is updating (3) Click [DOWNLOAD AND INSTALL] (4) TV is updating

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

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

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] ] ] N N N _ _ _ Q E E E O W _ _ R I B B _ [ E M E [ A 2 8 C 3 2 [ 4 A D 2 B

] 6 2 O I P G [ 4 1 K A

] K L C _ O P T [ 0 3 P

] P N I _ C D A _ D M D [ 1 3 N A

P N I I_ _ C D A

] 7 0 [ A T A D _ S T _ 1 D O M E D _ E F

8 9 0 1 2 3 4 5 1 1 2 2 2 2 2 2 ] ] ] ] ] ] ] ] 0 [ 1 [ 2 [ 3 [ 4 [ 5 [ 6 [ 7 [ A A A A A A A A T T T T T T T T A A A A A A A A D D D D D D D D _ _ _ _ _ _ _ _ S S S S S S S S T T T T T T T T _ _ _ _ _ _ _ _ 1 1 1 1 1 1 1 1 D D D D D D D D O O O O O O O O M M M M M M M M E E E E E E E E D D D D D D D D _ _ _ _ _ _ _ _ E E E E E E E E F F F F F F F F

1 T E S E R _ U T /

0 1 ] U T _ 1 T E S E R _ U T / [

] L A V _ O P T [ 9 2 P

] N N I _ C D A _ D M D [ 2 3 N A

] P O S _ O P T [ 9 2 N

] 7 ~ 0 A T A D I_ P T [

] C G A _ F I [ 1 3 L A

N N I I_ _ C D A

R E T L I F

P N _ _ F F I I

7 ] P _ F I [

8 ] N _ F I [

C G A _ F I

5 ] U T _ C G A _ F I [

] 7 0 [ A T A D _ O P T ] 7 ~ 0 [ A T A D _ O P T [

3. Video & Audio IN/OUT

C O S N I A M ] 2 N I _ S B V C [ 4 2 M A

e d i S C O S

e d i S k c a J

C O S _ N I _ S B V C _ 1 V A

N I _ S B V C _ V A

] N N I I_ _ 2 2 H H C C _ _ L R _ _ D D A A U U A A [ [ 8 8 1 1 L M A A

S 2 I

] N I ] ] _ ] I N N I 1 I N _ _ Y _ 1 1 O 1 B R S Y P P [ [ [ [ 0 0 1 2 2 2 2 2 M N L M A A A A

N N I I _ _ 2 2 H H C C _ _ L R _ _ D D A A U U A A

1 K t C n A e J n o e p n o m o h C P

t u O c e p S t n e n o p m o C

] T U O 8 5 9 C E I [ 4 1 M A

] 3 2 O I P G [

T E S E R _ P M A

C O S C C _ C O O N I O S S _ S _ _ 2 _ I N N G N I _ I O _ b r_ S Y P P _ _ _ _ 2 2 2 2 P P P P M M M M O O O O C C C C

N I I N _ _ L R _ _ V V A / A / 2 2 P P M M O O C C

1 K V C A A J e n o h P

] 0 _ A D S ] / H 0 _ C L ] R C ] K L S K C C _ C R A C 2 S [ L [ D [ I [

o P 5 i d M 1 u A 5 7 A P T N

M O C I M

o P 5 i d M 1 u A 5 7 A P T N

P 8 3 1 M A 6 P A H P T E ) T E U T U M _ M _ P R M E A F O O W (

b r P Y P _ _ _ 2 2 2 P P P M M M O O O C C C r e k a e p S t n o r F

] ] L R T T U U O O _ _ A A D D U U A A [ [ 5 5 1 1 L M A A

] T U O _ C R A _ 0 Y H P [

r e k a e p S r e f o o W

T U O _ F I D P S T U O F I D P S

C R A _ T U O _ F I D P S T ) I U 2 O M C D ( R H A

K K C C A A J J _ _ T T U U O O L R _ _ P P H H K C A J P / H

t u O c e p S P / H

4. HDMI 2.0

C O S N I A M

4 . 2 . 1 2 P P C C D D H H

4 . 2 . 1 2 P P C C D D H H

4 . . 2 1 2 P P C C D D H H

2 4 . . 1 2 P P C C D D H H

0 . Y H 2 I P M E D G H L




] ] A L D C S S _ _ 3 3 _ _ 2 I 2 I M M D D H H [ [

] D P H _ 3 _ 2 I M D H [

] ] A L D C S S _ _ 2 2 _ _ 2 I 2 I M M D D H [ H [

M O C I M E T O 1 _ M C E 2 R 1 I _ _ _ C t r C E o D C P D

1 _ D P H I_ M D H

E T O M E R _ C E C

2 _ C 2 2 I_ _ t r C o D P D

] D P H _ 2 _ 2 I M D H [

C R 2 A _ _ T D U P O H _ F I_ I M D D P H S

V 5 +

V 5 +

] ] A L D C S S _ _ 1 1 _ _ 2 I 2 I M M D D H H [ [

E T O 3 _ M C E 2 R 3 I _ _ _ C t r C E o D C P D

] T ] U D O P _ H C _ 1 R _ A _ 2 I 0 M Y D H P H [ [

C R 3 A _ _ T D U P O H _ F I_ I M D D P H S

] ] A L D C S S _ _ 0 0 _ _ 2 I 2 I M M D D H H [ [

E T O M E R _ C E C

4 _ C 2 4 I_ _ t r C o D P D

V 5 + V 5 +

1 V I _ M ) 0 . D 2 H (

2 V I )_ C M 0 . R D 2 A H (

3 V I _ M ) 0 . D 2 H (

4 H I )_ M 0 . D 2 H (

] D P H _ 0 _ 2 I M D H [

4 _ D P H I_ M D H

5. USB / Wi-Fi / M-Remote / UART y l n o l e d o m S U ) * ( I F I W _ V 5 . 3 +

1 V _ B ) S 0 . 3 U (

2 H _ B ) S 0 . 2 U (

2 _ B S U _ V 5 +

1 _ B S U _ V 5 +

3 H _ B ) S 0 . 2 U (

T B / P i 5 F - 2 r i e f W a + W R I

3 _ B S U _ V 5 +

r e f a w T R A U

N E I_ F I W

N O _ R E W O P I_ F I W / L O W

M O C I M P C O

P C O

0 0 M M D D / / 0 0 0 M P P D / D D _ _ 0 X X P T R D _ _ _ 1 1 1 1 L _ _ _ T 0 . 0 . 0 . C _ 3 3 3 B B B B S S S S U U U U

] ] ] 0 M M M / / D P P _ _ C / 0 0 0 X X O P T R _ _ _ ] S D 0 0 _ 0 _ 0 _ 3 3 9 3 N O I B B B I S S P A S U U U [ M [ [ [ G

1 M D / 1 P D _ 2 _ 0 . 2 B S U

2 L T C _ B S U

] 0 M D / 0 P D _ 1 ] _ 5 2 9 O B I S P U [ G [

C I 2 3 2 S R

k c a J e n o h p 0 C 0 2 2 3 6 2 K S J R

r e f a W g u b e D

X T / X R _ C O S

X T / X R _ C O S

P C O

0 M D / 0 P D _ 3 _ 0 . 2 B S U

3 L T C _ B S U

] 0 M D / 0 P D _ ] 0 4 _ 2 3 I B O S P U [ [ G

M D / P D I_ F I W

] 0 M D / 0 P D _ 2 _ 2 B S U [

X T / X R _ C O S

] ] 6 5 0 0 1 1 O O I I P P G / G / D D X X R T _ _ 0 0 T T R R A A U U [ [

X T / X R _ 1 T R A U

] D X T / D X R _ 1 T R A U [

6. I2C Map y d a e R p a C

) d o m e D ( R E N U T

B N L

r e n u T

M A R V N

F p 8 1 Ω 3 3

F p 7 4

Ω 3 3

Ω 3 3

Ω 3 3

U T _ V 3 . 3 +

C O S N I A M

Ω K 7 . 2

] ] 0 0 L A C D S S [ [ 3 3 2 2 K J A A : : 0 0 L A C D S S _ _ C C 2 2 I I

L A M R O N _ V 3 . 3 +

P M A O I D U A

] ] 3 3 L A C D S S [ [ 4 4 2 2 H J A A : : 3 3 L A C D S S _ _ C C 2 I 2 I

L A M R O N _ V 3 . 3 +

Ω K 3 . 3

Ω 0 0 1 F p 3 3

L A M R O N _ V 3 . 3 +

Ω K 3 . 3

] ] 4 4 L A C D S [ S 1 [ 2 1 J 2 A H : A 4 : L 4 C A S D _ S _ C C 2 I 2 I

] ] 1 1 L A C D S [ S 2 [ 2 2 2 K J A A : : 1 1 L A C D S S _ _ C C 2 I 2 I

Ω K 3 . 3

T S _ V 5 . 3 +

Ω 0 0 1

F p 3 3

P M A O I D U A

U T _ V 3 . 3 +

L A M R O N _ V 3 . 3 +

Ω K 3 . 3 M O C I M

Ω 0 0 1 A L D C S S _ _ C C 2 I I 2 _ _ E E Y Y E E

) U E ( Ω K 2 . 1

] ] 2 2 L A C D S [ S 3 [ 2 2 2 H H A A : : 2 2 L A C D S S _ _ C C 2 2 I I

] ] 5 5 L A C D S [ S 5 [ 2 6 2 H H A A : : 5 5 L A C D S S _ _ C C 2 I 2 I

Ω K 3 . 3

Ω 3 3 E Y E / Y E K / R I

) I P E ( C I M P

) 1 x V ( R E F A W

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.

0 2 9

0 0 9 0 0 7 0 0 4

0 1 A

0 1 7

2 R A

2 V L 1 V L

1 2 5

1 7 5

0 7 5

0 4 5

0 2 1

0 1 8

1 2 1

0 0 2 0 3 5

0 0 5

DISASSEMBLY GUIDE ① Put the set on the flat pad.

② Remove Rear Small Cover

Pull up bottom of Rear Small Cover to remove.

③ Remove Stand Screw and Stand

FAB30016103 (M4*12mm), 4EA Remove Screw 4EA first, next remove Stand ④ Remove Back Cover Screw

FAB31843216 (M3*5.5mm, Gray) 9EA  Common use 55”/65” FAB31843216 (M3*5.5mm, Gray) 1EA  Add only 55”

⑤ Remove PowerCord Bracket

Pull up Power Cord, than remove Bracket, next remove cord from PSU.

⑥ Remove Back Cover

Pull up bottom of Back Cover to remove.

TROUBLE SHOOTING GUIDE

Contents of Standard Repair Process No.

Error symptom (High category)

Error symptom (Mid category)

Page

1

No video/Normal audio

1

2

No video/No audio

2

Picture broken/ Freezing

3

4

Color error

4

5

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

5

6

No power

6

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

7

No audio/Normal video

8

Wrecked audio/discontinuation/noise

9

3

A. Video error

B. Power error 7 8 C. Audio error 9 10

Remote control & Local switch checking

10

Remarks

Contents of Standard Repair Process No.

Error symptom (High category)

Error symptom (Mid category)

Page

1

No video/Normal audio

1

2

No video/No audio

2


3

4

Color error

4

5

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

5

6

No power

6


7

No audio/Normal video

8

Wrecked audio/discontinuation/noise

9

3

A. Video error

B. Power error 7 8

Remarks

C. Audio error 9


10

MR15RA operating checking

11

12

Wifi operating checking

12

13

External device recognition error

13

10 11 D. Function error

14

E. Noise

Circuit noise, mechanical noise

14

15

F. Exterior error

Exterior defect

15

First of all, Check whether there is SVC Bulletin in GSSC System for these model. Standard Repair Process

Established date

A. Video error

Error symptom

No video/ Normal audio

Revised date

1/15

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,,,) A9

A1 No video Normal audio

Normal audio

Y

Check Vx1 lock voltage

N Move to No video/No audio

Y

0V

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

N

A9

N

Check Power Board (Module) 24V output

Normal voltage N Repair Power Board or parts

Normal voltage

Y

Repair Power Board or parts

Replace module

End

Y

Replace Main Board

Standard Repair Process

Established date

A. Video error

Error symptom

No video/ Normal audio

Revised date

1/15

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,,,) A9

A1 No video Normal audio

Normal audio

Y

Check Vx1 lock voltage

N Move to No video/No audio

Y

0V

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

N

A9

Normal voltage

Y

Replace Main Board

N

Check Power Board (Module) 24V output

Y

Normal voltage

Repair Power Board or parts

Replace module

End

N Repair Power Board or parts

※Precaution

A4 & A2

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

Replace Main Board

Re-enter White Balance value

1 Standard Repair Process

Error symptom

A. Video error

Established date

No video/ No audio

Revised date

A9 No Video/ No audio

Check various voltages of Power Board (Main) (20V, 12V…)

Normal voltage? N Replace Power Board and repair parts

Y

Check and replace MAIN B/D End

2/15


Error symptom

A. Video error

Established date

No video/ No audio

Revised date

2/15

A9 Check various voltages of Power Board (Main) (20V, 12V…)

No Video/ No audio

Normal voltage?

Y

Check and replace MAIN B/D

N

End

Replace Power Board and repair parts


A3 Check RF Signal level

Normal Signal?

Y

Established date

A. Video error

Error symptom


Revised date

3/15

. 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%)

Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set-Top-Box, Different maker TV etc`

N Check RF Cable Connection 1. Reconnection 2. Install Booster

A4 Normal Picture? N

Y

Check S/W Version

SVC Bulletin? Y

N

Y Check Tuner soldering N

Close



Revised date

3/15

. 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%)

A3 Check RF Signal level

Normal Signal?

Established date

A. Video error

Error symptom

Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set-Top-Box, Different maker TV etc`

Y

N

A4

Check RF Cable Connection 1. Reconnection 2. Install Booster

Normal Picture?

Y

Check S/W Version

Y Check Tuner soldering

Close

N

Y

N Normal Picture?

N

SVC Bulletin?

S/W Upgrade

N

Contact with signal distributor or broadcaster (Cable or Air) Normal Picture?

Y

N Replace Main B/D

Y Close Close


Error symptom

Established date

Color error

Revised date

Color error? N

Y

Check and replace Link Cable (V by one) and contact condition

Color error?

Y

Color error?

Replace Main B/D

Y

Replace module

N

N End

Check error color input mode

A15 Check Test pattern

4/15

A7

A6 Check color by input -External Input -AV -HDMI

A. Video error

External Input error

Check external device and cable

External device Y /Cable normal N

Replace Main B/D


Error symptom

A. Video error

Established date

Color error

Revised date

4/15

A7

A6 Check color by input -External Input -AV -HDMI

Color error? N

Y

Check and replace Link Cable (V by one) and contact condition

Y

Color error?

Color error?

Replace Main B/D

Replace module

N

N End

Check error color input mode

A15



Check Test pattern

Y

External device Y /Cable normal

Replace Main B/D

N Request repair for external device/cable

N External device Y /Cable normal


HDMI error

Replace Main B/D


Established date

A. Video error

Error symptom

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

Revised date

5/15

Vertical/Horizontal bar, residual image, light spot

Replace Module

A6

A7

Check color condition by input -External Input -HDMI

Screen Y normal?

Check external device connection condition

Y Normal?

Y

Request repair for external device

Replace module

Screen N normal?

Screen normal?

Replace Main B’D

for LGD Panel

N

N

A15

Check and replace Link Cable

N

Y

Replace Main B’D

End

End

Check Test pattern

External device screen error-Color error Check S/W Version

Check

N

Check screen condition by input -External Input -AV

External Input

Connect other external device and cable (Check normal operation of External Input, HDMI/DVI

Screen normal?

N Replace Main B/D /


Established date

A. Video error

Error symptom

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

Revised date

5/15

Vertical/Horizontal bar, residual image, light spot

Replace Module

A6

A7

Check color condition by input -External Input -HDMI

Screen Y normal?

Check external device connection condition

Check and replace Link Cable

Y Normal?

Screen N normal?

Y

Request repair for external device

Replace module

Screen normal?

Replace Main B’D

for LGD Panel

N

N

A15

N

Y

Replace Main B’D

End

End

Check Test pattern

External device screen error-Color error Check screen condition by input -External Input -AV -HDMI/DVI

Check N version

Check S/W Version


Connect other external device and cable (Check normal operation of External Input, HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc.

Y

Screen normal?

N Replace Main B/D / Module

Y Request repair for external device

S/W Upgrade Connect other external device and cable

Normal screen?

HDMI/ DVI

N

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

Y Screen normal?

N

Replace Main B/D / Module

Y End

5


Error symptom

B. Power error

Established date

No power

Revised date

A8 Check Logo LED

6/15

A9 DC Power on by pressing Power Key On Remote control

Y

Power LED On?

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

Normal N operation?

Check Power On ‘”High”

OK?

Y

Check Power cord was inserted properly

Replace Main B/D

A9 Measure voltage of each output of Power B/D

N Normal?

Y

Close

Y

Y

Check ST-BY (7.8V)

A9

Normal Y voltage?

Normal voltage?

Y

N Replace Power B/D

Replace Main B/D

Replace Power B/D


Error symptom

B. Power error

Established date

No power

Revised date

A8

6/15

A9

Check Logo LED

DC Power on by pressing Power Key On Remote control

Y

Power LED On?

Normal N operation?

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

Check Power On ‘”High”

OK?

Replace Power B/D

Y

Y

Check Power cord was inserted properly

Replace Main B/D

A9 Measure voltage of each output of Power B/D

N Normal?

Y

Y

Close

Normal Y voltage?

Check ST-BY (7.8V)

A9

Y

Normal voltage?

Replace Main B/D

N Replace Power B/D

N

Replace Power B/D


Error symptom

B. Power error

Established date


Revised date

7/15

Check outlet

A10 Check A/C cord

Error?

N

Check Power Off Mode

CPU Abnormal

Normal?

Replace Main B/D

Y

N Check for all 2- phase power out

Y

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

Abnormal 1

Replace Power B/D

A9 (If Power Off mode is not displayed) Check Power B/D voltage ※ Caution Check and fix exterior of Power B/D Part

Normal voltage?

Y

N Replace Power B/D

Replace Main B/D

End


Error symptom

B. Power error

Established date


Revised date

7/15

Check outlet

A10 Check A/C cord

Error?

N

Check Power Off Mode

CPU Abnormal

Normal?

Replace Main B/D

Y

End

N Check for all 2- phase power out

Y

Abnormal 1

Replace Power B/D

A9

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

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

Replace Main B/D

N

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

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

Y

Normal voltage?

Replace Power B/D

"POWER_OFF_BY_REMOTE_KEY”

"POWER_OFF_BY_OFF_TIMER" "POWER_OFF_BY_SLEEP_TIMER" "POWER_OFF_BY_INSTOP" "POWER_OFF_BY_AUTO_OFF" "POWER_OFF_BY_ON_TIMER" "POWER_OFF_BY_RS232C" "POWER_OFF_BY_RESREC" "POWER_OFF_BY_RECEND" "POWER_OFF_BY_SW_DW" "POWER_OFF_BY_UNKNOWN"

Power off by REMOTE CONTROL Power off by OFF TIMER Power off by SLEEP TIMER Power off by INSTOP KEY Power off by AUTO OFF Power off by ON TIMER Power off by RS232C Power off by Reservated Record Power off by End of Recording Power off by S/W Download Power off by unknown status except listed case Power off by abnormal status except CPU trouble Power off by CPU Abnormal


Error symptom

C. Audio error

Established date

No audio/ Normal video

Revised date

A11 No audio Screen normal

Check user menu > Speaker off

A12+A9 Off

N

Check audio B+ 20V of Power Board

Normal voltage

Y

Cancel OFF

Y

N


N

8/15


Error symptom

C. Audio error

Established date

No audio/ Normal video

Revised date

A11 Check user menu > Speaker off

No audio Screen normal

8/15

A12+A9 Off

N

Check audio B+ 20V of Power Board

Normal voltage

Y

N

Cancel OFF

Check Speaker disconnection

Y


Disconnection

N

Replace MAIN Board

End

Y connecting Speaker


Error symptom

C. Audio error Wrecked audio/ discontinuation/noise

Established date Revised date

9/15

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

Check input signal -RF -External Input signal

Wrecked audio/ Discontinuation/ Noise for all audio Signal normal?

A12+A9 Check and replace speaker and connector

Check audio B+ Voltage (20V)

Y

Y Wrecked audio/ Discontinuation/ Noise only for D-TV

N

Normal voltage?

Replace Main B/D N

Wrecked audio/ Discontinuation/ Noise only for Analog (When RF signal is not received) Request repair to external cable/ANT provider

Wrecked audio/ Discontinuation/ Noise only

Replace Power B/D

Replace Main B/D

End


Established date

C. Audio error

Error symptom

Wrecked audio/ discontinuation/noise

Revised date

9/15

→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio A12+A9

Wrecked audio/ Discontinuation/ Noise for all audio

Check input signal -RF -External Input signal

Check and replace speaker and connector

Check audio B+ Voltage (20V)

Y

Signal normal?

Y Wrecked audio/ Discontinuation/ Noise only for D-TV

N

Normal voltage?

Replace Main B/D N

Wrecked audio/ Discontinuation/ Noise only for Analog (When RF signal is not received) Request repair to external cable/ANT provider

Replace Power B/D

(In case of External Input signal error) Check and fix external device

End

Replace Main B/D

Wrecked audio/ Discontinuation/ Noise only for External Input Connect and check other external device

Normal audio?

N

Y Check and fix external device


Established date

D. Function error

Error symptom


Revised date

10/15

1. Remote control(R/C) operating error A13 Check R/C itself Operation

Normal Y operating?

Replace Main B/D

A13

Check & Repair Cable connection Connector solder

N

Normal operating?

N

A13

Check B+ 3.5V On Main B/D

Y

A9 Check R/C Operating When turn off light in room

Check & Replace Baterry of R/C

If R/C operate, Explain the customer cause is interference from light in room.

Normal Y operating? N Replace R/C

Close

Close

Normal Voltage?

Y

Check IR Output signal

N

Check 7.8V on Power B/D Replace Power B/D or Replace Main B/D (Power B/D don’t have problem)

Normal Signal? N Repair/Replace IR B/D

Y


Established date

D. Function error

Error symptom


Revised date

10/15

1. Remote control(R/C) operating error A13 Check R/C itself Operation

A13

Check & Repair Cable connection Connector solder

Normal Y operating?

Replace Main B/D

N

Normal operating?

N

A13

Check B+ 3.5V On Main B/D

Y

A9 Check R/C Operating When turn off light in room

Check & Replace Baterry of R/C

If R/C operate, Explain the customer cause is interference from light in room.

Normal Y operating?

Normal Voltage?

Y

Check IR Output signal

N

N

Check 7.8V on Power B/D Replace Power B/D or Replace Main B/D (Power B/D don’t have problem)

Close

Normal Signal?

Repair/Replace IR B/D

Close

N Replace R/C


Established date

D. Function error

Error symptom


Revised date

11/15

2. MR15RA (Magic Remocon) operating error A4 Check the INSTART menu

RF Receiver ver is “00.00”?

N

Check MR15RA itself Operation

Normal Y operating?

Press the wheel

N

A14

Y

Y Check & Replace Battery of MR15RA

Check & Repair RF assy connection

Normal Y operating?

A4 RF Receiver ver is “00.00”?

N

Close

N

Close

Close Is show ok message? Y

Replace MR15RA

Turn off/on the set and press the wheel

Is show ok N message?

N

Press the back key about 5sec

Y


Established date

D. Function error

Error symptom


Revised date

11/15

2. MR15RA (Magic Remocon) operating error A4 Check the INSTART menu

N

RF Receiver ver is “00.00”?

Check MR15RA itself Operation

Normal Y operating? N

A14

Y

Y Check & Replace Battery of MR15RA

Check & Repair RF assy connection

Normal Y operating?

A4 RF Receiver ver is “00.00”?

N

Close

Close Is show ok message?

N

Close

Turn off/on the set and press the wheel

Is show ok N message?

Press the wheel

N

Press the back key about 5sec

Y Replace MR15RA

Y

Close Down load the Firmware •If you conduct the loop at 3times, change the MR15RA.

* INSTART MENU 12.RF Remocon Test Receiver Firmware download


D. Function error

Error symptom



12/15

3.Wifi operating error A14

A4 Check the INSTART menu

Wi-Fi Mac value is “NG”?

N

Check the Wifi wafer 1pin

Normal Voltage? Y

A14

Y Close

Check & Repair Wifi cable connection

A4 Wi-Fi Mac value is “NG”?

N

Close

N

Replace Main B/D


Established date

D. Function error

Error symptom


Revised date

12/15

3.Wifi operating error A14

A4 Check the INSTART menu

Wi-Fi Mac value is “NG”?

N

Check the Wifi wafer 1pin

Normal Voltage?

N

Replace Main B/D

Y

A14

Y Close

Check & Repair Wifi cable connection

A4 Wi-Fi Mac value is “NG”?

N

Close

Y Change the Wifi assy


Check input signal


Y Signal input? N

Established date

D. Function error

Error symptom

Check technical information - Fix information - S/W Version

Check and fix external device/cable

Technical information?

Revised date

N

External Input Recognition error

13/15

Replace Main B/D

Y

Fix in accordance with technical information

HDMI/ DVI, Optical Recognition error

Replace Main B/D


Check input signal

Established date

D. Function error

Error symptom


Y Signal input? N

Check technical information - Fix information - S/W Version

Technical information?

Revised date

N

External Input Recognition error

13/15

Replace Main B/D

Y

Check and fix external device/cable

Fix in accordance with technical information

HDMI/ DVI, Optical Recognition error

Replace Main B/D


Error symptom

Identify nose type

Circuit noise

Mechanical noise

E. Noise

Established date


Revised date

Check location of noise

Replace PSU


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

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 T ak” noise from the

14/15


Error symptom

Identify nose type

Circuit noise

Mechanical noise

E. Noise

Established date


Revised date


14/15

Replace PSU


When the nose is severe, replace the module (For models with fix information, upgrade the S/W or 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.

OR

※ If there is a “Tak T ak” 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)


Error symptom

Zoom part with exterior damage

F. Exterior defect Exterior defect

Module damage

Replace module

Cabinet damage

Replace cabinet

Remote control damage

Replace remote control


15/15


F. Exterior defect

Error symptom

Zoom part with exterior damage

Exterior defect

Module damage

Replace module

Cabinet damage

Replace cabinet

Remote control damage

Replace remote control

Stand dent


15/15

Replace stand

15

Contents of Standard Repair Process Detail Technical Manual

1 2

A. Video error_ No video/Normal audio

3 4

A. Video error_ video error /Video lag/stop

5 6

A. Video error _Vertical/Horizontal bar, residual image, light spot

7 A. Video error_ Color error 8

Check Vx1 lock

A1

Check White Balance value

A2

TUNER input signal strength checking method

A3

Version checking method

A4

Tuner Checking Part

A5

Connection diagram

A6

Check Link Cable (Vx1) reconnection condition

A7

Adjustment Test pattern - ADJ Key Exchange Main Board (1)

A15 A-1/5

Contents of Standard Repair Process Detail Technical Manual

1

A. Video error_ No video/Normal audio

2 3

A. Video error_ video error /Video lag/stop

4 5

A. Video error _Vertical/Horizontal bar, residual image, light spot

6 7

A. Video error_ Color error 8

Check Vx1 lock

A1

Check White Balance value

A2


A3

Version checking method

A4

Tuner Checking Part

A5

Connection diagram

A6

Check Link Cable (Vx1) reconnection condition

A7

Adjustment Test pattern - ADJ Key

9

Defected Type caused by T-Con/ Power / Module

A15

Exchange Main Board (1)

A-1/5

Exchange Main Board (2)

A-2/5

Exchange Power Board (PSU)

A-3/5

Exchange Module (1)

A-4/5

Exchange Module (2)

A-5/5

Contents of Standard Repair Process Detail Technical Manual Continued from previous page

10

Check front display LED

A8

Check power input Voltage & ST-BY 3.5V

A9

POWER OFF MODE checking method

A10

Checking method in menu when there is no audio

A11

Voltage and speaker checking method when there is no audio

A12

Remote control operation checking method

A13

Motion Remote operation checking method

A14

Adjustment Test pattern

A15

B. Power error_ No power 11 12 13 14

B. Power error_Off when on, off while viewing C. Audio error_ No audio/Normal video

15 D. Function error 16 17

E. Etc

Contents of Standard Repair Process Detail Technical Manual Continued from previous page

10

Check front display LED

A8

Check power input Voltage & ST-BY 3.5V

A9


A10


A11


A12

Remote control operation checking method

A13

Motion Remote operation checking method

A14

Adjustment Test pattern

A15

B. Power error_ No power 11 12 13 14

B. Power error_Off when on, off while viewing C. Audio error_ No audio/Normal video

15 D. Function error 16 17

E. Etc

Standard Repair Process Detail Technical Manual Error symptom Content

A. Video error_No video/Normal audio Check Vx1 lock


A1


A. Video error_No video/Normal audio Check Vx1 lock


A1

Check a voltage of R7624 after turn on the TV. If the voltage is low, Vx1 is locked.(OK) A1


A. Video error_No video/Normal audio Check White Balance value


A2

Standard Repair Process Detail Technical Manual Error symptom

A. Video error_No video/Normal audio Check White Balance value

Content


A2

Entry method 1. Press the ADJ button on the remote control for adjustment. 2. Enter into White Balance of item 12. 3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-enter the value afte r replacing the MAIN BOARD. A2


A. Video error_Video error, video lag/stop

Content



All Settings Channels Manual Tuning

A3

Channel Tuning



Content



All Settings Channels Manual Tuning

A3

Channel Tuning

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

A3


A. Video error_Video error, video lag/stop OLED TV Version checking method


1. Checking method for remote control for adjustment Version

A4


A. Video error_Video error, video lag/stop OLED TV Version checking method


A4

1. Checking method for remote control for adjustment Version

Press the IN-START with the remote control for adjustment A4



Content

TUNER checking part


A5



Content

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.

A5


A. Video error _Vertical/Horizontal bar, residual image, light spot OLED TV Connection diagram


A6


A. Video error _Vertical/Horizontal bar, residual image, light spot OLED TV Connection diagram


A6

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

A6


A. Video error_Color error Check Link Cable (Vx1) reconnection condition


A7


A. Video error_Color error Check Link Cable (Vx1) reconnection condition


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

A7

Appendix : Exchange Main Board (1)

Solder defect, CNT Broken




T-Con T-Con Defect, Defect, CNT CNT Broken Broken Solder defect,CNT CNTBroken Broken T-Con Defect,

Abnormal Power Section

A7






T-Con T-Con Defect, Defect, CNT CNT Broken Broken Solder defect,CNT CNTBroken Broken T-Con Defect,


Solder defect, Short/Crack



A - 1/5





Fuse Open, Abnormal power section


Abnormal Display





GRADATION


Fuse Open, Abnormal power section

Abnormal Display

Noise

GRADATION

A - 2/5

Appendix : Exchange Power Board (PSU)

No Light

No picture/Sound Ok

Appendix : Exchange Power Board (PSU)

No Light

No picture/Sound Ok

A - 3/5

Appendix : Exchange the Module (1)

Vertical abnormal display

Crosstalk

Brightness difference

Press damage

Line Dim

Crosstalk


Vertical abnormal display


Crosstalk

Press damage

Line Dim

Crosstalk

Un-repairable Cases In this case please exchange the module.

Burnt

A - 4/5


Angle view Color difference


Brightness dot noise

Green Noise on power on/off time

Half dead

Line Defect


Angle view Color difference


Brightness dot noise

Half dead

Green Noise on power on/off time

Line Defect

Un-repairable Cases In this case please exchange the module.

A - 5/5


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

B. Power error _No power Check front Power Indicator


A8



B. Power error _No power Check front Power Indicator

A8

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

A8



B. Power error _No power Check power input voltage and ST-BY 3.5V

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

A9

Power To Main B’d

P202

Power To Module



B. Power error _No power Check power input voltage and ST-BY 3.5V

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

A9

Power To Main B’d

P202

Power To Module

P201

A9


B. Power error _Off when on, off whiling viewing Established POWER OFF MODE checking method

date Revised date

A10


B. Power error _Off when on, off whiling viewing Established

Content


date Revised date

A10

Entry method 1. Press the IN-START button of the remote control for adjustment 2. Check the entry into adjustment item 3 (Power On/Off Status) A10


C. Audio error_No audio/Normal video

Content



A11



Content



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

A11



Content



①

②

②

A12



Content



A12

①

②

②

Checking order when there is no audio ① Check the contact condition of or 20V connector of Main Board

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

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.

A12


D. Function error Remote control operation checking method

① IR & EYE Sensor ②

①


A13

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Pin name 3.5V_WIFI WIFI_DM_JACK WIFI_DP_JACK GND WOL/WIFI_POWER_ON 3.5V_WIFI COMBO_RESET_JACK GND BT_WAKEUP_DEVICE_JACK BT_WAKEUP_HOST_JACK GND GND NC NC NC EYE_SDA_JACK EYE_SDA_JACK GND


D. Function error Remote control operation checking method


① IR & EYE Sensor ②

①

③

A13

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Pin name 3.5V_WIFI WIFI_DM_JACK WIFI_DP_JACK GND WOL/WIFI_POWER_ON 3.5V_WIFI COMBO_RESET_JACK GND BT_WAKEUP_DEVICE_JACK BT_WAKEUP_HOST_JACK GND GND NC NC NC EYE_SDA_JACK EYE_SDA_JACK GND IR_JACK LED_R_JACK GND +3.5V_ST KEY2_JACK KEY1_JACK GND

Checking order to check remote control 1. Check IR cable condition between IR & Main board.( Check picture number ① and ②) 2. Check the standby 3.5V on the terminal 22 pin ( 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


D. Function error Motion Remote operation checking method

① Wifi & BT Front

②

Wifi & BT Rear


A14

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Pin name 3.5V_WIFI WIFI_DM_JACK WIFI_DP_JACK GND WOL/WIFI_POWER_ON 3.5V_WIFI COMBO_RESET_JACK GND BT_WAKEUP_DEVICE_JACK BT_WAKEUP_HOST_JACK GND GND NC NC NC EYE_SDA_JACK EYE_SDA_JACK GND


D. Function error Motion Remote operation checking method


① Wifi & BT Front

②

Wifi & BT Rear

③

A14

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Pin name 3.5V_WIFI WIFI_DM_JACK WIFI_DP_JACK GND WOL/WIFI_POWER_ON 3.5V_WIFI COMBO_RESET_JACK GND BT_WAKEUP_DEVICE_JACK BT_WAKEUP_HOST_JACK GND GND NC NC NC EYE_SDA_JACK EYE_SDA_JACK GND IR_JACK LED_R_JACK GND +3.5V_ST KEY2_JACK KEY1_JACK GND

Checking order to check motion remote/wifi Checking order 1.Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2.Check the 3.5V on the terminal 6 A14

Standard Repair Process Detail Technical Manual Error symptom Content 1

2

3

A. Video error_Color error Adjustment Test pattern


A15


A. Video error_Color error Adjustment Test pattern


1

2

3

Press the P-ONLY  HDMI HOT

 CH

+ or -

You can view 11 types of patterns using the CH+ or - key Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) A15

A15

LG-OLED

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