LG 43UJ651V Schematic

CONFIDENTIAL

LED TV

SERVICE MANUAL

CHASSIS : UD74P

MODEL : 43UJ65** 43UJ65**-ZA

CAUTION

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

P/NO : MFL69879805 (1707-REV02)

CONTENTS

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

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

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

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

SOFTWARE UPDATE .............................................................................. 11

BLOCK DIAGRAM ..................................................................................12

EXPLODED VIEW .................................................................................. 25

DISASSEMBLY GUIDE .......................................................................... 26

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

- 2 -

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

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

General Guidance

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.

It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1 W), keep the resistor 10 mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MΩ and 5.2 MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check. Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to

0.5 mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

- 3 -

SERVICING PRECAUTIONS

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conict between the

following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.

General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC power source before;

a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug

or other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

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

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

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

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

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

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

of contacts in not required.

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

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

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

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

service manual.

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

heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

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

devices are integrated circuits and some eld-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 sol-

der 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 LED TV with UD74P chassis.

2. Requirement for Test

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

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

(4) Specification and performance of each parts are followed

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

(5) The receiver must be operated for about 20 minutes prior

to the adjustment.

3. Test method

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

- Safety : CE, IEC specification

- EMC : CE, IEC specification

- Wireless : Wireless HD Specification (Option)

4. Model General Specification

No. Item Specication Remarks

DTV & Analog (Total 37 countries)

DTV (MPEG2/4, DVB-T) : 26 countrie

Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain, , Belgium, Luxemburg, Greece, Czech, Turkey, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Slovakia, Belarus

1 Market EU/CIS(PAL Market-37Countries)

DTV (MPEG2/4, DVB-T2) :11 countries

UK(Ireland), Sweden, Denmark, Finland, Norway, Ukraine, Kazakhstan, Russia, Italy, Croatia, Serbia

DTV (MPEG2/4, DVB-C) : 37 countries

Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain, Italy, Belgium, Russia, Luxemburg, Greece, Czech, Croatia, Turkey, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Serbia, Slovakia, Belarus, UK, Sweden, Denmark, Finland, Norway, Ukraine, Kazakhstan

DTV (MPEG2/4,DVB-S) : 37 countries

Germany, Netherland, Switzerland, Hungary, Austria, Slovenia, Bulgaria, France, Spain,Belgium, Luxemburg, Greece, Czech, Turkey, Morocco, Ireland, Latvia, Estonia, Lithuania, Poland, Portugal, Romania, Albania, Bosnia, Slovakia, Belarus, UK(Ireland), Sweden, Denmark, Finland, Norway, Ukraine, Kazakhstan,Russia, Italy, Croatia, Serbia

Supported satellite : 35 satellites

ABS1 75.0E , AMOS 4.0W , ASIASAT3S 105.5E , ASTRA 19.2E , ASTRA

23.5E , ASTRA 28.2E , ASTRA 4.8E, ATLANTIC BIRD2 8.0W , ATLANTIC BIRD3 5.0W , BADR 26.0E , DIRECTV-1R 56.0E , EUROBIRD 9A 9.0E , EUROBIRD3 33.0E , EUTELSAT 36 A/B 36.0E , EUTELSAT W2A 10.0E , EUTELSAT W3A 7.0E , EUTELSAT7WA 7.3W

- 6 -

No. Item Specication Remarks

2 Broadcasting system

3 Program coverage

4 Receiving system

1 ) PAL/SECAM B/G/I/D/K SECAM L/L’ 2 ) DVB-T/T2, C, S/S2

1 ) Digital TV

-VHF, UHF

-C-Band, Ku-Band

2) Analogue TV

-VHF : E2 to E12

-UHF : E21 to E69

-CATV : S1 to S20

-HYPER : S21 to S47

Analog : Upper Heterodyne Digital : COFDM, QAM

► DVB-T

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

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

► DVB-T2

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

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

5 Input Voltage AC 100 ~ 240V 50/60Hz

► DVB-C

- Symbolrate :

4.0Msymbols/s to 7.2Msymbols/s

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

► DVB-S/S2

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

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

- 7 -

5. External Input Format

5.1. 2D Mode

5.1.1. Component input(Y, CB/PB, CR/PR)

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

1 720*480 15.73 59.94 13.50 SDTV ,DVD 480i

2 720*480 15.75 60.00 13.5135 SDTV ,DVD 480i

3 720*576 15.62 50.00 13.50 SDTV 576i

4 720*480 31.47 59.94 27.00 SDTV 480p

5 720*480 31.50 60.00 27.027 SDTV 480p

6 720*576 31.25 50.00 27.00 SDTV 576p

7 1280*720 44.96 59.94 74.175 HDTV 720p

8 1280*720 45.00 60.00 74.250 HDTV 720p

9 1280*720 37.50 50.00 74.250 HDTV 720p

10 1920*1080 28.12 50.00 74.250 HDTV 1080i

11 1920*1080 33.72 59.94 74.175 HDTV 1080i

12 1920*1080 33.75 60.00 74.250 HDTV 1080i

13 1920*1080 56.25 50.00 148.50 HDTV 1080p

14 1920*1080 67.43 59.94 148.350 HDTV 1080p

15 1920*1080 67.50 60.00 148.50 HDTV 1080p

5.1.2. HDMI Input (PC)

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

1 640*350 31.46 70.09 25.17 EGA

2 720*400 31.46 70.08 28.32 DOS

3 640*480 31.46 59.94 25.17 VESA(VGA)

4 800*600 37.87 60.31 40.00 VESA(SVGA)

5 1024*768 48.36 60.00 65.00 VESA(XGA)

6 1152*864 54.34 60.05 80.00 VESA

7 1360*768 47.71 60.01 85.00 VESA(WXGA)

8 1280*1024 63.98 60.02 109.00 VESA(SXGA) FHD, UHD only

9 1920*1080 67.50 60.00 158.40 WUXGA(CEA 861D) FHD, UHD only

10 3840*2160 54.00 24.00 297.00 UDTV 2160P UHD only

11 3840*2160 56.25 25.00 297.00 UDTV 2160P UHD only

12 3840*2160 67.50 30.00 297.00 UDTV 2160P UHD only

13 4096*2160 53.95 23.97 296.703 UDTV 2160P UHD only

14 4096*2160 54.00 24.00 297.00 UDTV 2160P UHD only

- 8 -

5.1.3. HDMI Input (DTV)

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

1 640*480 31.46 59.94 25.13 SDTV 480P

2 640*480 31.50 60.00 25.13 SDTV 480P

3 720*480 15.73 59.94 13.50 SDTV, DVD 480I(525I)

Spec. out but display4 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 27.00 SDTV 480P

7 720*480 31.50 60.00 27.03 SDTV 480P

8 720*576 31.25 50.00 27.00 SDTV 576P

9 1280*720 44.96 59.94 74.18 HDTV 720P

10 1280*720 45.00 60.00 74.25 HDTV 720P

11 1280*720 37.50 50.00 74.25 HDTV 720P

12 1920*1080 28.12 50.00 74.25 HDTV 1080I

13 1920*1080 33.72 59.94 74.18 HDTV 1080I

14 1920*1080 33.75 60.00 74.25 HDTV 1080I

15 1920*1080 26.97 23.97 63.30 HDTV 1080P

16 1920*1080 27.00 24.00 63.36 HDTV 1080P

17 1920*1080 33.71 29.97 79.12 HDTV 1080P

18 1920*1080 33.75 30.00 79.20 HDTV 1080P

19 1920*1080 56.25 50.00 148.50 HDTV 1080P

20 1920*1080 67.43 59.94 148.35 HDTV 1080P

21 1920*1080 67.50 60.00 148.50 HDTV 1080P

22 3840*2160 53.95 23.98 297.00 UDTV 2160P UHD only

23 3840*2160 54.00 24.00 297.00 UDTV 2160P UHD only

24 3840*2160 56.25 25.00 297.00 UDTV 2160P UHD only

25 3840*2160 61.43 29.97 297.00 UDTV 2160P UHD only

26 3840*2160 67.50 30.00 297.00 UDTV 2160P UHD only

27 3840*2160 112.50 50.00 594.00 UDTV 2160P(DVB) UHD only

28 3840*2160 134.86 59.94 593.41 UDTV 2160P UHD only

29 3840*2160 135.00 60.00 594.00 UDTV 2160P UHD only

30 4096*2160 53.95 23.98 297.00 UDTV 2160P UHD only

31 4096*2160 54.00 24.00 297.00 UDTV 2160P UHD only

32 4096*2160 56.25 25.00 297.00 UDTV 2160P UHD only

33 4096*2160 61.43 29.97 297.00 UDTV 2160P UHD only

34 4096*2160 67.50 30.00 297.00 UDTV 2160P UHD only

35 4096*2160 112.50 50.00 594.00 UDTV 2160P(DVB) UHD only

36 4096*2160 134.86 59.94 593.41 UDTV 2160P UHD only

37 4096*2160 135.00 60.00 594.00 UDTV 2160P UHD only

- 9 -

5.2. 3D Mode - DTV/HDMI/USB

5.2.1. RF Input

No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1280*720 37.50 50 74.25 HDTV 720P

2 1920*1080 28.13 50 74.25 HDTV 1080I

2D to 3D, Side by Side, Top & Bottom

- 10 -

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

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

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

version

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

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

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

Tool Option.

- 11 -

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

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

and Tool Option

Realtek

K3Lp

DDR3 2133 X 32

(512MB X 2EA)

Hynix 20nm

DDR3 2133 X 32

(512MB X 2EA)

eMMC (4GB)

Toshiba 15nm

CI Slot

B-CAS

(JAPAN)

B-CAS

controller

SMARTCARD_I/F

USB2 (2.0)

OCP

USB3 (2.0)

HDMI3

HDMI2(ARC)

HDMI1

Air/

Cable

DVB-S

LNB

(DT1805)

REAR(H)

P_TS_OUT

P_TS_IN

Sub Micom

(RENESAS

R5F100GEAFB)

X_TAL

32.768KHz

I2C 1

USB_WIFI

X_TAL

27MHz

Sub Assy

LAN

ETHERNET

SPDIF

A

V/COMP

CVBS/YPbPr

SPDIF OUT

H/P

AMP

RS-232

MAX323

MAIN Audio AMP

(DTA2010M)

I2S Out

I2C 4

Vx1 51P (8 lane) : LGD 60/65/70/75

Vx1 / EPI

I2C 6

EPI PMIC

(SW50B3A)

Level

shifter

M0 M1

B-CAS

I2C 6

NVRAM (256Kb)

I2C 4

I2C 2

EPI block

HDMI4 (EEPROM)

USB1 (3.0)

OCP

K3L only

IR / KEY(1Key)

LOGO LIGHT(Ready)

WIFI/BT Combo

MTK IC

EPI 60Px2 (3G, 6 lane) : LGD 43/49/55

CEDS 68Px2 (1.5G, 12 lane) : BOE

T2/C/S2 NIM tuner

TS

RF IC

Demode

(T/C/S/T2/S2)

BLOCK DIAGRAM

1. K3Lp Block Diagram (External)

HDMI 6G 4

K3L only. (K3Lp 256MB x 2ea SoC )

- 12 -

2. K3Lp Block Diagram (Internal)

- 13 -

K3Lp

CEDS/EPI 6Lane 68pin

HTPDAn_IN

[GPIO_5_VBY_LOCK/EPLOCK]

[GPIO_4_VBY_HTPD/TCON_14]

BOE Panel

3840x2160@60p

1.5Gbps

[EPI_TX12~EPI_TX23]

A

LOCKAn_IN

CEDS/EPI 6Lane 68Pin

LGD Panel

3840x2160@60p

3Gbps

PMIC

&

Level Shifter

SW50B3A(LGD)

SW5253(BOE)

CLK(x10)

VCOM1

VCOMLFB / VCOMRFB

VCOM2

VGL1

VST

GIP_RST

LS_VGL

VGH_EVEN

VGH_ODD

HVDD

EPI 3Lane 60P

GMA

(1, 5, 6, 9, 10, 13, 24,18)

[GPIO_5_VBY_LOCK/EPLOCK]

PMIC_RESET

[GPIO7_PMIC_RESET]

LOCKOUT12

GST, E/O, MCLK, GLCK

[GPIO019_DAC_OUT]

[GPIO_0_DAC_SCLK]

[GPIO_4_VBY_HTPD/TCON_14]

[GPO_1_TCON_I2C_EN/TCON_2]

Boost/Buck

(RT5043A)

VDD, VCORE

SWG

SWO

SWI

[EPI_TX12~EPI_TX23]

GAMMA

(RT6508)

BOE Only

GMA

(2, 3, 4, 7, 8,

11, 12, 15, 16, 17)

[GPIO_2_TCON_SCL/TCON_9]

[GPIO_1_TCON_SDA/TCON_5]

68pin

60pin

68pin

60pin

3. EPI / CEDS Block Diagram

- 14 -

17Y Tuner

K3Lp

RTK

[B1_+3.3V_RF] 3

[+3.3V_DEMOD_TU] 11

[B3_+1.2V_DEMOD] 13

[IF_P_TU] 8

[IF_N_TU] 7

[TU_SIF] 6

[TU_CVBS_TU] 4

[IF_AGC_TU] 5

[M_ERROR] 14

[M_MCLK] 15

[M_SYNC] 16

[M_VALID] 17

AB5 / AB2 [GPIO57_TP0_CLK]

AB6 / AA3 [GPIO56_TP0_SYC]

AB4 / AC2 [GPIO58_TP0_VAL]

FE_DEMOD1_TS_ERROR

FE_DEMOD1_TS_CLK

FE_DEMOD1_TS_SYNC

FE_DEMOD1_TS_VAL

FE_DEMOD1_TS_DATA[0-7] 18-25

FE_DEMOD1_TS_DATA [0-7]

[GPIO59~66_TP0_D0~TP0_D7]

[B4_+2.5V_DEMOD] 29

+2.5V_Normal

[/TU_RESET1_TU] 10

/TU_RESET1

AB2 / L1 [VINRP_TUNER0_REST]

[LNB_TX1] 12

[LNB] 26(Full NIM) / [LNB] 26(Half NIM)

[SCL_RF] 1

[SDA_RF] 2

I2C_SCL2

I2C_SDA2

+3.3V_NORMAL

IF_P

IF_N

TUNER_SIF (OPT : TU_EXT_ATV)

TU_CVBS (OPT : TU_EXT_ATV)

IF_AGC

AE1 / U2 [IF_P]

AE2 / U3 [IF_N]

AE3 / V2 [SIF]

Y5 / R5 [VIN10P]

Y4 / W4 [GPIO55_RF_IF_AGC1]

[SCL_DEMOD] 36

[SDA_DEMOD] 35

+ DEMOD_CORE

LNB

IC7001

DT1805

LNB_TX

LNB_OUT

1.8K ȳ

5 [SCL]

6 [SDA]

8 [TONECTRL]

2 [LNB]

33 ȳ

[/TU_RESET2_TU] 34

/TU_RESET2

AA3 / M2 [VINGP_DEMOD_RESET]

33 ȳ

TU_JP

AA5 / Y4 [GPIO52_TUNER0_SCL]

AA6 / AA4 [GPIO51_TUNER0_SDA]

[S_ERROR] 28

[S_MCLK] 33

[S_SYNC]30

[S_VAL] 31

[S_DATA]32

TU_JAPAN

AF4 [GPIO54_TUNER1_SCL]

AF5 [GPIO53_TUNER1_SDA]

Reserved for Dual Tuner_only K3L

F

G

_T

R

1

_

5

_

R

1

_

R

e

f

l

r

_

y

K

3

L

AF3 / W2 [IP_1]

AG1 / W3 [IN_1]

AG2 / Y2 [QP_2]

AG3 / Y3 [QN_2]

IF_S_IP

IF_S_IN

IF_S_QP

IF_S_QN

[IF_S_IP_MAIN] 59

[IF_S_IN_MAIN] 60

[IF_S_QP_MAIN] 62

[IF_S_QN_MAIN] 61

JAPAN_OPT

FE_DEMOD1_TS_1_DATA[1]

FE_DEMOD1_TS_1_DATA[4]

FE_DEMOD1_TS_1_DATA[3]

FE_DEMOD1_TS_1_DATA[2]

FE_DEMOD2_TS_ERROR

4. Tuner

- 15 -

HDMI_ARC

ST_GPIO_23_H0_ARC[AG13]

[V2] SIF

I2C_SDA/SCL_AMP

AUD_SCK

AMP_RESET_N

HP_L/ROUT

H/P Jack

SIDE_HP_MUTE

GPIO021_SCLK[C2]

GPO_0_I2S_WCLK/SPDIF_OUT_1[D13]

GPIO15_D0 [B3]

GPIO_35_HPOL [N5]

GPIO_36_HPOR [N4]

TU_SIF

AI2R_AMP_SDA [G4]

AI3L_AMP_SCL [G5]

H/P AMP

TPA6138A2

(IC6300)

LPF

AI2L_AMP_RESET_N [F5]

SPDIF_OUT

AV1_CVBS_DET

COMP1/AV1/DVI_L_IN

COMP1/AV1/DVI_R_IN

[H5] AIO1L_AV1_CVBS_DET

[M5] AI1L

[M4] AI1R

HP_LOUT_AMP

HP_ROUT_AMP

LPF

Realtek

K3Lp

Tuner

GPIO_6_SPDIF_OUT_0 [E3]

AUD_LRCH

AUD_LRCK

AMP_MUTE

SPK_R+ / R-

SPK_L+ / L-

MAIN AMP

DTA2010M

(IC5800)

MICOM

SPK L

SPK R

22

26

[38] CLK_I [8] WCK [7] SDATA [10,11] [36] [12]

[30, 33]

[18, 21]

AV/COMP

HDMI2

SPDIF

HP_DET

AIO2L_HP_DET[J5]

COMP1_Pb

COMP1_Pr

COMP1_Y/CVBS

COMP1_DET

[N3] VIN 3P

[P3] VIN 5P

[P2] VIN 4P

[H4] AI3R_COMP1_DET

5. Video & Audio IN/OUT

- 16 -

REALTEK

K3Lp

HDMI2.0_1_HPD

TMDS1 - D0/D1/D2/CLK

ST_GPIO_19_5V_DET_HDMI_0

ST_GPIO_18_H0_HPD

ST_GPIO_21_H0_SCL

ST_GPIO_20_H0_SDA

P0_CKN/P_RGB_N/P

DDC_SCL1 / DDC_SDA1

MICOM

R5F100GEAFB

(IC3000)

HDMI2.0_1_5V_DET

HDMI2.0_2_HPD

TMDS2 - D0/D1/D2/CLK

ST_GPIO_15_5V_DET_HDMI_1

ST_GPIO_14_H1_HPD

ST_GPIO_17_H1_SCL

ST_GPIO_16_H1_SDA

ST_GPIO_23_H0_ARC

P1_CKN/P_RGB_N/P

DDC_SCL2 / DDC_SDA2

HDMI2.0_2_5V_DET

HDMI2.0_3_HPD

TMDS3 - D0/D1/D2/CLK

ST_GPIO_10_5V_DET_HDMI_2

ST_GPIO_11_H2_HPD

ST_GPIO_13_H2_SCL

ST_GPIO_12_H2_SDA

P2_CKN/P_RGB_N/P

DDC_SCL3 / DDC_SDA3

HDMI2.0_3_5V_DET

HDMI2.0_4_HPD

TMDS4 - D0/D1/D2/CLK

ST_GPIO_07_5V_DET_HDMI_3

ST_GPIO_06_H3_HPD

ST_GPIO_09_H3_SCL

ST_GPIO_08_H3_SDA

P3_CKN/P_RGB_N/P

DDC_SCL4 / DDC_SDA4

HDMI2.0_4_5V_DET

HDMI2 with ARC

HDMI1

HDMI3

HDMI4

HDMI_CEC

HDMI_ARC

HDMI_CEC

6. HDMI 2.0 Block

- 17 -

RS232C

(IC7200)

WIFI_DM / DP

SOC_RX / TX

USB2.0_2_DM / DP

USB2

DEBUG_RX / TX

Realtek

K3Lp

HSDM1[AM24]

HSDP1[AL24]

HSDM2[AM25]

HSDP2[AL25]

HSDM0 [G1]

HSDP0 [G2]

USB1

USB2.0_3_DM / DP

MICOM

R5F100GEAFB

(IC3000)

[AH5] ST_GPIO_02_VGA_SDA

[AG5] ST_GPIO_01_VGA_SCL

ST_GPIO_25_UART0/1[AH13]

ST_GPIO_24_UART0/1[AG14]

Wafer

(P200)

Wafer

(P4000)

DEBUG UART

Wafer

(P201)

5 7 9

10

19

20

23

24

SOC_RX / TX

DCDC OCP

BD2242G

(IC4501)

USB_OCD2 [AJ18]

USB_CTL2 [AG20]

+5V_USB2.0_2

+5V_USB2.0_3

WOL/WIFI_POWER_ON

BT_RESET

BT_WAKEUP_DEVICE

BT_WAKEUP_HOST

IR

LED_R

KEY2

KEY1

DCDC OCP

BD2242G

(IC4700)

USB_OCD3 [AG22]

USB_CTL3 [AH19]

DOUT1

RIN1

PHONE JACK

7. USB / WIFI / M-REMOTE / UART(Debug)

- 18 -

[GPIO_2_TCON_SCL/TC

ON_9]

I2C_SDA6

SW50B3A(LGD)

SW5253A(BOE)

EPI PMIC

I2C_SCL6

1.8k ȳ

[ST_GPIO_26_MICRO_SDA]

[ST_GPIO_27_MICRO_SCL]

I2C_SDA_1

I2C_SCL_1

K3Lp

[GPIO_1_TCON_SDA/TC

ON_5]

1.8k ȳ

+3.3V_NOR

1.8k ȳ

+3.5V_ST

R5F100GEAFB#30

MICOM

[AI3L_AMP_SCL]

[AI2R_AMP_SDA]

I2C_SDA4

I2C_SCL4

FT24C256A-ESR-T

NVRAM

DTA2010M

AMP

[GPIO_51_TUNER0_SDA]

[GPIO_52_TUNER0_SCL]

I2C_SDA2

I2C_SCL2

DT1805

LNB

TDJN-G501D

TUNER

1.8 k ȳ

+3.3V_NOR

1.8k ȳ

+3.3V_NOR

33 ȳ

100ȳ

33 ȳ

EPI / CEDS only

8. K3Lp I2C Map

- 19 -

[ST_GPIO_05_IR_RX]

[ST_GPIO_00_WOL_WAKE_UP]

WOL/ETH_POWER_ON

USB_CTL2

K3Lp

MICOM

USB2_2.0 OCP USB2

[RTC_XO_USBOCD0]

[GPIO_79_USB_PWR0_SD_WP]

INSTANT_BOOT

/USB_OCD2

USB_CTL3

USB3_2.0 OCP USB3

[RTC_XI_USBOCD1]

[GPIO_78_USB_PWR1_SD_CD]

/USB_OCD3

[RST]

SOC_RESET

[AH16,AH17,AG16,AG17,AJ16]

BIT0~4

HW option

ADC 1~5

[GPIO_119_PC_RST]

PCM_RESET

CI_SLOT

CI power

enable control

[AIO2R_CMD_VCC_SC]

PCM_5V_CTL

Panel

[GPIO_4_VBY_HTPD/TCON_14]

EPI_MCLK

[GPIO_5_VBY_LOCK/EPLOCK]

LOCKAn

[GPIO7_PMIC_RESET]

PMIC_RESET

PMIC

[GPO011_PWM_DIM_1]

[GPIO010_PWM_DIM_0]

PWM_DIM2

POWER

PWM_DIM

[GPO012_LD_SPI1_SCK]

L/DIM_M0_SCLK

[GPO013_LD_SPI1_SDO]

L/DIM_M0_MOSI

[GPO014_LD_SPI1_SYNC]

L/DIM_M0_VS

EPI_GCLK

[GPO_1_TCON_I2C_EN/TCON_2]

[VINBN_VIDCORE]

VID_CORE

CORE DCDC

[VINRP_TUNER0_REST]

/TU_RESET1

Tuner

/TU_RESET2

[VINGP_DEMOD_RESET]

[AI2L_AMP_RESET_N]

AMP_RESET_N

Audio AMP

[AI3R_COMP1_DET]

COMP1_DET

Component/AV Jack

[AIO1L_AV1_CVBS_DET]

AV1_CVBS_DET

[VDBSOUT_SC_PWR_SEL]

SMARTCARD_PWR_SEL

Japan B-CAS

[AIO2L_HP_DET]

HP_DET

H/P Jack

9. GPIO(K3Lp)

- 20 -

RTK ˀ K3L

IC100

1 [P60/SCLA0] / 2 [P61/SDAA0]

13 [P50//INTP1/SI11/SDA11]

18 [P14/RXD2/SI20/SDA20]

RS232C

CONTROL I/F

IC7200

SOC_RX/TX

[P24/ANI4] 28

[P23/ANI3] 29

MICOM DEBUG 4P

P3000

12507WS-04L

[P40/TOOL0] 39

MICOM_DEBUG

AMP

IC5800

DTA2010M

AMP_MUTE

MODEL1_OPT_0/1/2/ 3

4 [P63]

5 [P31/TI/03/TO03/INTP4]

GND

+13V TO PANEL_VCC

PANEL_CTL

HDMI 1 / 2 / 3 /4

JK3101/JK3102/JK3103/JK3104

HDMI_CEC

RESET IC

IC1300

14 [P51/INTP2/SO11]

POWER_DET

POWER WAFER

P1001

INV_CTL

MODE_SELECT_PWM1

RL_ON

I2C_SCL_MICOM / I2C_SDA_MICOM

WOL/ETH_POWER_ON

SOC_RESET

INSTANT_BOOT

SYSTEM_DEBUG

HP AMP

IC6300

TPA6138A2

[P25/ANI5] 27

SIDE_HP_MUTE

OPT0 NON LOGO LCD/LOGO LCD

NON LOGO OLED/LOGO OLED

OPT1 TV-NON EPI/BOX/TV EPI/BOX

OTP2 RESERVED/ RESERVED/9_KEY/9_KEY_NON

OPT3 M16/RTK/H15

[RESET] 40

MICOM_RESET

MICOM X-TAL

X3000

32.768KHz

[P124/XT2/EXCLKS] 41

[P123/XT1] 42

17 [P15/PCLBUZ1/SCK20/SCL20]

WOL_CTL

51P VX1 Wafer

1.0V DCDC Eth STDBY

IC2307

TLV62565DBVR

EWBS_TUNER

[P16/TI01/TO01/INTP5] 16

AM_MODE_DET_OLED

[P137/INTP0] 43

HDMI EXT EDID

IC3401

BR24G02FJ

22 [P10/SCK00/SCL00]

7 [P74/KR4/INTP8/SI01/SDA01]

19 [P13/TXD2/SDA20]

36 [P140/PCLBUZ0/INTP6]

IR / KEY/WIFI/BT

P4000

10 [P71/KR1/SI21/SDA21] / 11 [P70/KR0/SIK21/SCL21]

31 [P21/ANI1/AVREFM] / 32 [P20/ANI0/AVREFP]

38 [P41/TI07/TO07]

6 [P75/KR5/INTP9/SCK01/SCL01]

20 [P12/SO00/TXD0/TOOLTXD]

21 [P11/SI00/RXD0/TOOLRXD/SDA00]

EWBS_TU

TUxxxx

EDID_WP

3D&L_DIM_EN

[P146] 23

[P62] 3

1.5V DCDC

IC2303

SYVL83

33 [P130]

3.3V NORMAL DCDC

IC2300

TPS563208

[P72/KR2/SO21] 9

POWER_ON/OFF2_3

0.95V CORE/CPU DCDC

IC2302

TPS51362RVER

1.8V eMMC LDO

IC2301

TJ4320GDP-ADJ

POWER_ON/OFF2_4

[P01/TO00/RXD1] 34

12 [P30/INTP3/RTC1HZ/SCK11/SCL11]]

[P17/TI02/TO02] 15

POWER_ON/OFF1

13V-5V NORMAL DCDC

IC2500

TPS564208

24 [P147/ANI18]

25 [P27/ANI7]

26 [P26/ANI6]

WIFI_EN

[P22/ANI2] 30

35 [P00/TI00/TXD1]

[P122/X2/EXCLK] 44

T_CON_SYS_POWER_OFF_OLED

[P121/X1] 45

IR

EYE_SCL / EYE_SDA

BT_WAKEUP_DEVICE

WOL/WIFI_POWER_ON

COMBO_RESET

BT_WAKEUP_HOST

KEY1 / KEY2

LED_R

1.2V Demod LDO

IC6900

TJ4320GDP-ADJ

GND

+3.5V WIFI

37 [P120/ANI19]

RETENTION_DISABLE

8 [P73/KR3/SO01]

* Depending on Model

10. GPIO(MICOM – RENESAS)

- 21 -

K3Lp

K3L_DDR_0_ADDR_[0:14]

DC1_A [0:14]

K3L_DDR_0_CON_BA[

0:2]

DC1_BA [0:2]

K3L_DDR_0_CLK_ P/N

K3L_DDR_0_CON_CKE

K3L_DDR_0_CON_ODT

DC1_ODT

K3L_DDR_0_CON_RA

SN /CASN

DC1_RAS / CAS

K3L_DDR_0_CON_WEN

DC1_WE

K3L_DDR_0_DQS_0_P/N

K3L_DDR_0_DQS_1_P/N

DC1_DQS0 / DQS0B

DC1_DQS1 / DQS1B

DC1_DQS2 / DQS2B

DC1_DQS3 / DQS3B

K3L_DDR_0_DQ [0:15]

K3L_DDR_0_DQ [16:31]

DC1_DQ [0:15]

DC1_CLK / CLKB

DC1_CKE

A[0:14]

BA[0:2]

ODT

RAS/CAS

WEN

LDQS/~LDQS

DDR3 IC400

CK / ~CK

CKE

UDQS/~UDQS

DC1_DQ [16:31]

DQ[0:15]

A[0:14]

BA[0:2]

ODT

RAS/CAS

WEN

DDR3 IC401

LDQS/~LDQS

CK / ~CK

CKE

UDQS/~UDQS

DQ[0:15]

K3L_DDR_0_DQS_2_P/N

K3L_DDR_0_DQS_3_P/N

1k ohm

DC1_CSB

K3L_DDR_0_CON_CS 0

~CS

~CS DC1_CSB_1

K3L_DDR_0_CON_CS 1

11. DDR Block

- 22 -

LDO DCDC

D13.2V

3.5V ST

4A

IC2305

MICOM

IR h˅

RS-232

WiFi Module

FET

FET(Q4101)

SoC(STB3V3_1)

L311

FET(Q203)

SoC(STB3V3_2)

1V WOL

1A

IC2307

SoC(Ethernet)

FET(Q202) L300 SoC(USB1V0)

L302 SoC(LV1V0)

L305 SoC(HDRX1V0)

1.5V DDR

3.5A IC2303

DDR3(IC401)

DDR3(IC402)

FET(Q201)

SoC(LV1V5_1~2) L303

SoC(CPU1V0)

D1V0

10A

IC2302

SoC(C01V0)

FET(Q1101)

SubPMIC(IC9300)

Panel_VCC

L1100

SoC(DDR)

L400

DDR VTT

0.75V, 1.5A

IC410

Tuner(+3.5V_ST)

L6504

PMIC(IC9200)

12. K3Lp Power Block

- 23 -

D13.2V

3.3V NORM

3A

IC2300

CI Detect

HP Amp

NVRAM

SPDIF OUT

Pull up

SoC(HDRX3V3)

FET(Q302)

SoC(D3V3,A3V3)

L306

1.8V

2A

IC2301

L2305

SoC(EMMC1V8)

EMMC VCCQ

EMMC VCC

L2304

Demod

Core

2A

IC6900

2.5V

2A

IC6800

Tuner Demod

Tuner 2.5V

Audio Amp

L5801

BCAS

L6401

Tuner (+3.3V_TU)

L6505

Tuner (LNB)

L7001

Tuner (+3.3V_TU) L6503

5V NORM

4A

IC2500

USB1 OCP

USB2 OCP

EDID EEPROM

CI OCP & CI IF

L6400 BCAS(Japan)

A13.2V

Audio Amp

*Japan Only

13. K3Lp Power Block2

- 24 -

500

530

540

521

120

121

570

411

400

901

902

800

700

A10

700

AR1

ARC1

200

820

LV1 LV2

200A

200T

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.

- 25 -

1. Disassemble stand

DISASSEMBLY GUIDE

-M4*16 4EA Disassemble screw

- 26 -

-rotate and disassemble.

2. Disassemble screw

-put up the back cover.

17EA

M3*10 13EA M4*10 2EA M3*5.5 1EA

3. Disassemble screw

- 27 -

M3*5.5

-pushing red point and pull out side.

4. Disassemble Bottom Cover, and Wifi PCBA

-push side and raise up.

-put up the Bottom cover.

push

5. Disassemble IR

- 28 -

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 10

10

11

A. Video error

B. Power error

C. Audio 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 9

Remote control & Local switch checking

MR15 operating checking 12

7-8

11

5

12

13 Camera operating checking 14

14 External device recognition error 15

15 E. Noise Circuit noise, mechanical noise 16

16 F. Exterior error Exterior defect 17

D. Function error

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

Wifi operating checking 13

Standard Repair Process

Error

symptom

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, LVDS Cable, Speaker Cable, IR B/D Cable,,,)

☞A18 ☞A1

No video Normal audio

Normal

audio

N

Move to No video/No audio

Y

Check Back Light On with naked eye

☞A18

Check Power Board 13V output

On

Normal voltage

N

Repair Power Board or parts

Y N Check Power

Board 13V

Replace Inverter

Y

or module

Normal voltage

N

Repair Power Board or parts

End

Replace T-con/Main

Y

Board or module

1/17

※Precaution

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

☞A4 & A2

Replace Main Board

1

Re-enter White Balance value

Standard Repair Process

Error

symptom

No Video/ No audio

☞A18

Check voltage of Power Board ( 13V…)

A. Video error

No video/ No audio

Normal

voltage?

Replace Power Board and repair parts

Y

N

Check and replace MAIN B/D

Established

date

Revised date

End

2/17

2

Standard Repair Process

☞ A3

Check RF Signal level

Normal

Signal?

N

Check RF Cable

Connection

1. Reconnection

2. Install Booster

Y

Error

symptom

A. Video error

Picture broken/ Freezing

Established

date

Revised date

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

( Advanced→ 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`

☞ A4

Normal

Picture?

N

Y

S/W Version

Check

SVC

Bulletin?

Y

N

Check

Tuner soldering

N

Y

3/17

Close

Normal

Picture?

Y

Close

N

Contact with signal distributor

or broadcaster (Cable or Air)

3

S/W Upgrade

Normal

Picture?

Y

Close

N

Replace

Main B/D

Standard Repair Process

☞A6

Check color by input

-External Input

-COMPONENT

-AV

-HDMI

☞A8

Check Test pattern

Error

symptom

Color

error?

N

Check error color input mode

A. Video error

☞ A7

※ Check

and replace

Y

Link Cable (V by one) and contact condition

External Input/

Component

error

Color error

Color

error?

N

Check external device and cable

Y

Replace Main B/D

Established

date

Revised date

External device

/Cable

normal

N

Color

error?

End

Y

Replace module

N

Replace Main/T-con B/D

4/17

HDMI

error

Check external

device and cable

4

Request repair

for external

device/cable

N

External device

/Cable

normal

Y

Replace Main/T-con B/D

Standard Repair Process

Error

symptom

Vertical / Horizontal bar, residual image,

A. Video error

light spot, external device color error

Vertical/Horizontal bar, residual image, light spot

☞A6

Check color condition by input

-External Input

-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

Check S/W Version

Check

version

Y

S/W Upgrade

N

-External Input

-Component

-HDMI/DVI

Component

☞ A7

Check and

Y

replace Link Cable

External

Input

error

Established

date

Revised date

Screen

normal?

N

Replace Main/T-con B/D

For LGD panel

Y

End

Replace Main B/D

For other panel

Connect other external device and cable

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

Screen

normal?

Request repair for external device

N

Y

5/17

Replace Module

N

Screen

normal?

Y

End

Replace Main/T-con B/D

Normal

screen?

End

N

Y

5

HDMI/

DVI

Connect other external device and cable

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

Generator ,Set-top Box etc.

Y

Screen

normal?

N

Replace Main /T-con B/D

Standard Repair Process

☞A17

Check Logo LED

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

Check Power cord was inserted properly

Error

symptom

Power LED

On?

N

Normal?

Y

Close

Y

N

Check ST-BY 3.5V

☞A18

B. Power error

No power

DC Power on by pressing Power Key On Remote control

Normal

voltage?

Y

N

Established

date

Revised date

☞A18

Y

N

Check Power On ‘”High”

Replace Main B/D

Normal

operation?

☞A18

Measure voltage of each output of Power B/D

N

Y

Replace Main B/D

Normal

voltage?

Replace Power B/D

OK?

Y

6/17

Replace

Power B/D

Replace Power B/D

6

Standard Repair Process

Check outlet

Check A/C cord

Check for all 3- phase power out

Error

symptom

Error?

Y

Fix A/C cord & Outlet and check each 3 phase out

B. Power error

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

☞A19

N

Check Power Off Mode

☞A18

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

※ Caution

Check and fix exterior of Power B/D Part

Abnormal

Established

date

Revised date

CPU

1

Normal

voltage?

Replace Power B/D

Replace Main B/D

Y

N

Replace Power B/D

Replace Main B/D

Normal?

N

7/17

Y

End

7

Standard Repair Process

Power Off list

Explanation

Action contents

KEYTIMEOUT

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

Check & Change Main B/D

1SEC Power OFF

Almost the same as Power Off by KEYTIMEOUT. If there is no vaild communication Bet ween CPU and MICOM for more than 5 seconds, the MICOM switcheds off PSU and Records. Power off by 1SEC Power off. In this case, we don’t have information where the malfunction exactly occurred. But in in indicates that CPU had stopped and rebooted.

Check & Change Main B/D

ACDET

In case of AC Off (It is normal when the power cord is unplugged.)

Normal

If there are many ACDETs connected, Power Board is defective

Check & Change Power B/D

5V MNT

Power off by 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.

Check & Change Power B/D

CPUABNORMAL

If the CPU attempts to reset in case of abnormal operation and Shut Down in case of failure.

Check & Change Main B/D

NO POLING

Power off when receiving no ack. RESULT : TV power off/on (Reboot) CONDITION : There is no I2C response from CPU for 15 seconds.

Check & Change Main B/D

CPUCMD

Power off by main SoC command.

Check & Change Main B/D

INV_ERROR

Power off by module error (OLED) CONDITION : OLED Module send signal to micom

Check & Change OLED Module

ONRF_FAIL

RESULT : Reboot, CONDITION : OLED module compensation is running but fails.

Check & Change OLED Module

PNWASHFAIL

Power off by panel noise wash function fail case.

Check & Change OLED Module

RESET

When Micom is reset by AC Off

Normal Case

KEY

Power off by Local key

OFFTIMER

Power off by Off timer

SLEEPTIMER

Power off by sleep timer

NOSIG

Power off by No Signal

FANSTOP

Power off by FAN operation stopped

INSTOP

Power off by Instop Key

AUTO OFF

Power off by auto off function

RESREC

Power off by reserved recording

RECEND

Power off when recording stops

SWDOWN

Reboot by SW down load function

UNKNOWN

No meaning (same as initial value)

COMP_END

OLED threshold voltage degradation(Compensation) completes.

PNWASHDONE

Power off by panel noise wash function complited. (OLED)

Error

symptom

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

B. Power error

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

Established

date

Revised date

8/17

8

Standard Repair Process

No audio Screen normal

Error

C. Audio error

symptom

No audio/ Normal video

☞A20 ☞A21+A18

Check user menu > Speaker off

Off

Y

Cancel OFF

Check audio B+

N

13V of Power Board

Established

date

Revised date

Normal

voltage

Replace Power Board and repair parts

Y

N

9/17

Check Speaker disconnection

Disconnection

Y

Replace Speaker

9

N

Replace MAIN Board

End

Standard Repair Process

Check input signal

-RF

-External Input

signal

Error

symptom

C. Audio error

Wrecked audio/ discontinuation/noise

Established

date

Revised date

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

☞A21+A18

Check audio B+ Voltage (13V)

Normal

voltage?

N

Replace Power B/D

Replace Main B/D

N

Y

Signal

normal?

N

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

Check and replace speaker and connector

Replace Main B/D

Connect and check other external device

Normal

audio?

10/17

End

Check and fix external device

10

Standard Repair Process

Error

symptom

Remote control & Local switch checking

D. Function error

1. Remote control(R/C) operating error

☞A22

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.

operating?

Normal

N

Y

Check & Replace

Baterry of R/C

Normal

operating?

Replace R/C

Check & Repair Cable connection Connector solder

Y

Close

N

Normal

operating?

Y

Close

☞A22

N

On Main B/D

Established

date

Revised date

Check B+

3.5V

Normal

Voltage?

N

☞A18

Check 3.5v on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

☞A22

Y

Check IR

Output signal

11/17

Replace

Main B/D

Normal Signal?

N

Repair/Replace

IR B/D

Y

11

Standard Repair Process

Error

symptom

D. Function error

MR15 operating checking

2. MR15 (Magic Remocon) operating error

☞A4

Check the

INSTART menu

RF Receiver ver

is “00.00”?

☞A23

Check & Repair

Y

RF assy

connection

☞A4

RF Receiver ver

is “00.00”?

Y

N

Check MR15

itself Operation

N

Close

Normal

operating?

N

Check & Replace

Battery of MR15

Normal

operating?

N

Replace

MR15

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

12/17

Press the back key about 5sec

Down load the Firmware

* INSTART MENU14.RF

Remocon Test3. Firmware

download

• If you conduct the loop at 3times,

change the MR15

12

Standard Repair Process

Error

symptom

3.Wifi operating error

Check the

INSTART menu

☞A4

Wi-Fi Mac value

is “NG”?

☞A24

Check & Repair

Wifi cable

connection

☞A4

Wi-Fi Mac value

is “NG”?

Y

D. Function error

Wifi operating checking

☞A24

N

Check the Wifi wafer

1pin

Close

Established

Revised date

Normal

Voltage?

Y

Close

date

N

13/17

Replace

Main B/D

Change the Wifi

Y

assy

13

Standard Repair Process

Error

symptom

4.Camera operating error

☞A4

Check the

INSTART menu

Camera module

Camera Ver.

is “NULL”?

Y

Change the

D. Function error

Camera operating checking

☞A25

N

Reconnect the

Camera module

Established

date

Revised date

Normal

operation?

Y

Close

N

14/17

Replace

Main B/D

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

External Input and

N

Component

Recognition error

HDMI/

DVI, Optical

Recognition error

Established

date

Revised date

15/17

Replace Main B/D

15

Standard Repair Process

Identify nose type

Error

symptom

Circuit

noise

Mechanical

noise

Circuit noise, mechanical noise

Check location of noise

E. 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.

Replace PSU

OR

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)

※ 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

Module

damage

Cabinet

damage

Remote

control

damage

F. Exterior defect

Exterior defect

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 lag/stop

4 Version checking method A4

5 Tuner Checking Part A5

A. Video error _Vertical/Horizontal bar,

6

residual image, light spot

7 A. Video error_ Color error

8

9 Exchange Main Board (1) ~ (3)

<Appendix> Defected Type caused by T-Con/

10 Exchange Module (1) ~ (3)

Inverter/ Module

Check LCD back light with naked eye A1

TUNER input signal strength checking method

Connection diagram A6

Check Link Cable (EPI) reconnection condition

Check Cable(1) ~ (2)

A3

A7

A-1/11 A-2/11

A-3/11 ~

A-5/11

A-6/11 ~

A-8/11

11 Exchange T-Con (1) ~ (2)

12 Exchange Power Board (PSU) A-11/11

A-9/11 ~

A-10/11

Continue to the next page

Contents of Standard Repair Process Detail Technical Manual

Continued from previous page

No. Error symptom Content Page Remarks

13

B. Power error_ No power

14 Check power input Voltage & ST-BY 3.5V A18

15

16

17

18 D. Function error Remote control operation checking method A22

19

20 Check items after Main B/D replacement A26

21 Adjustment Test pattern - ADJ Key A27

22

B. Power error_Off when on, off while viewing

C. Audio error_ No audio/Normal

video

E. Etc

Check front display LED A17

POWER OFF MODE checking method A19

Checking method in menu when there is no audio

Voltage and speaker checking method when there is no audio

How to use the Service remote control A23-A25

How to use JIG

(Power B/D Diganostic Smart Jig Multi Gender)

A20

A21

A28

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_No video/Normal audio

Check LCD back light with naked eye

Established

date

Revised

date

A1

After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations.

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

Entry method

1. Press the ADJ button on the remote controller for adjustment.

2. Enter into White Balance of item 13.

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

Established

date

Revised

date

Advanced Channels  Channel Tuning Manual Tuning

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

1. Checking method for remote control for adjustment

v

Established

date

Revised

date

A4

Press the IN-START with the remote control for adjustment

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.

3. If you can`t see the UHD live TV, please connect signal at left side of jack. (Korea model only)

A5

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error _Vertical/Horizontal bar,

residual image, light spot

Connection diagram (1)

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(FFC) 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

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Item

CABLE Color smear

CABLE R Color Excessive

CABLE Screen darkness

Symptom

Name

Cause Symptom Image

Pin 단선

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 - 1/11

Appendix. Examples of Symptoms(Image error)

Check for poor cable contact

Item

CABLE Color spread LVDS cable connection problem

Symptom

Name

Cause Symptom Image

CABLE Screen stop

Due to foreign substance withi nLVDS

cable PIN

A - 2/11

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

Top/bottom screen part

Picture problem due to tuner

Inner side quality problem

A - 3/11

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 - 4/11

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 - 5/11

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

MODULE

MODULE Internal matter

MODULE Image broken

Symptom

Name

Isometric

Horizontal Bar

Cause Symptom Image

Isometric horizontal bars occur

throughout the screen

BLU internal foreign matter inflow

6 block image broken

MODULE Image broken Screen sync signal broken

A - 6/11

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

MODULE Image broken

MODULE

MODULE Vertical smear

Symptom

Name

Bend on the

screen

Cause Symptom Image

Internal damage and image breakage

due to external impact

Bending due to lateral external impact

and internal bending of BLU

Vertical spreading on cube screen in no

signal

MODULE Over color Screen contour part brightly Over color

A - 7/11

Appendix. Examples of Symptoms(Module)

Check parts by symptom

Item

MODULE Vertical bar Center Vertical Bar

MODULE Screen darkness

MODULE Vertical bar Center Vertical Bar

Symptom

Name

Cause Symptom Image

Center of the screen 1 block dark

Darkness at the

MODULE

bottom of the

screen

MODULE internal BLU breakage

A - 8/11

Appendix. Examples of Symptoms(T-Con)

Check parts by symptom

Item

T-CON

Symptom

Name

screen lower

image broken

screen lower

image broken

screen lower

image broken

Cause Symptom Image

T-Con is defective and the picture below

the screen is broken

T-Con is defective and the picture below

the screen is broken

T-Con is defective and the picture below

the screen is broken

T-CON

screen lower

image broken

T-Con is defective and the picture below

the screen is broken

A - 9/11

Appendix. Examples of Symptoms(T-Con)

Check parts by symptom

Item

T-CON Image Broken

T-CON

T-CON Image Broken

Symptom

Name

Darkness at the

top of the screen

Cause Symptom Image

T-CON Wafer Locking The strength is

weak and cable contact failure occurs

Initial normal operation,

upper darkness during heat run

The entire screen is dark and bit noise

occurs

T-CON Image Broken

The entire screen is dark and bit noise

occurs

A - 10/11

Appendix : Exchange Power Board (PSU)

No Light

No picture/Sound Ok

A - 11/11

Standard Repair Process Detail Technical Manual

Error

symptom

Content

B. Power error _No power

Check front Power Indicator

Established

date

Revised

date

A17

Standard Repair Process Detail Technical Manual

Backlight

Forward

Voltage

Symbol

Values

Unit

Min

Typ

Max

65UJ65

VF

117.18

130.2

143.22 Vdc

60UJ65

111.87

124.3

136.73

55UJ65

99.4

106.6

113.8

49UJ65

-

85.05

91.8

43UJ65

-

65.94

71.4

Backlight

Forward

Voltage

Symbol

Values

Unit

Min

Typ

Max

65UJ63

VF

-

192

216

Vdc

60UJ63

-

175

195

55UJ63

-

130.4

141.2

49UJ63

-

111.6

118.8

43UJ63

-

65.94

71.4

Error

symptom

Content

B. Power error _No power

Check power input voltage and ST-BY 3.5V

Check the DC 13V

Established

date

Revised

date

A18

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

A19

Entry method

1. Press the IN-START button of the remote control for adjustment

2. Check the entry into adjustment item 3

A19

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

A20

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

A20

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Checking order when there is no audio

1.Check the contact condition of or 13V connector of Main Board

C. Audio error_No audio/Normal video

Voltage and speaker checking method when there is no audio

UJ7*

1 VSYNC 2 SIN 3 GND 4 SCLK 5 DRV_ON 6 PDIM1

7 GND 8 GND

9 A13 10 A13 11 D13 12 D13 13 GND 14 D13

②

15 PWR_ON 16 PDIM2 17 GND 18 GND

UJ6*

1 DRV_ON 2 PDIM1

3 GND 4 GND

5 A13 6 A13

7 D13 8 D13

9 GND 10 D13 11 PWR_ON 12 PDIM2

Established

date

Revised

date

①

③

1 SPK_R-

2 SPK_R+

3 SPK_L-

4 SPK_L+

A21

2. Measure the 13V 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.

A21

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Remote control operation checking method

D. Function error

Established

date

Revised

date

A22

IR & LOGO light Front

IR & LOGO light Rear

Eye LED

Checking order to check remote control

Checking order

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

IR

②

③

1 +3.5V 2 WIFI_DM

3 WIFI_DP

4 GND 5 WOL_ON 6 3.5V 7 COMBO_RESET 8 GND

9 COMBO_WAKEUP_DEVICE 10 COMBO_WAKEUP_HOST 11 GND 12 GND 13 NC 14 NC 15 NC

16 EYE_SDA

17 EYE_SCL 18 GND 19 IR 20 LED 21 GND 22 3.5V 23 KEY2 24 KEY1 25 GND

A22

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Remote control operation checking method

D. Function error

Established

date

Revised

date

A22

① Wifi & BT Front

Wifi & BT Rear

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 1

②

③

1 +3.5V

2 WIFI_DM

3 WIFI_DP

4 GND

5 WOL_ON

6 3.5V

7 COMBO_RESET

8 GND

9 COMBO_WAKEUP_DEVICE 10 COMBO_WAKEUP_HOST 11 GND 12 GND 13 NC 14 NC 15 NC

16 EYE_SDA

17 EYE_SCL 18 GND 19 IR 20 LED 21 GND 22 3.5V 23 KEY2 24 KEY1 25 GND

A22

Standard Repair Process Detail Technical Manual

Error

symptom

Content

1. How to access the remote control

How to use the Service remote control

D. Function error

0 4 1 3

Established

date

Revised

date

A23

0 4 1 3

A23

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

D. Function error

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

Established

date

Revised

date

A24

ETC (Added Function)

P-ONLY (Added

Function)

INPUT Change to the external device mode

ARC

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

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

Change in the order of 16:9=>Zoom1=>Zoom2=>Cinema Zoom=>Aucto Screen=>4:3=>16:9

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

Custom PIcture1=>Custom Picture2=>Bright Picture

Used when in factory mode

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

A24

Standard Repair Process Detail Technical Manual

Error

symptom

Content

How to use the Service remote control

D. Function error

Established

date

Revised

date

A25

B-TOOTH (Added function)

IN-START

ADJ

X-STUDIO (Added function)

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

HDD,USB, external device’s HDD screen is activated

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)

HDMI1,2,3,4 (Add function)

DVI (Add function) Connects to DVI

Connects to Component 1,2

Connects to HDMI 1,2,3,4

A25

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.

D. Function error

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.

A26

2. Press the Service remote control ADJ Key.

A14

A26

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.

Standard Repair Process Detail Technical Manual

Error

symptom

Content

1

2

3

A. Video error_Color error

Adjustment Test pattern

Established

date

Revised

date

A27

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!)

A27

Smart JIG Power Diagnosis

Muitl Gender Guide

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

A 28 (1/19)

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

28Pin

18Pin

24Pin

13Y/14Y

12Y

24Pin

15Y (LF/UF Series)

24Pin

15Y

(OLED)

24Pin

NC

24Pin

16Y (OLED)

28Pin

17Y (OLED)

28Pin

17Y (SJ/UJ)

28Pin

16Y (UH)

12Pin

Includes 49UJ63

16Y/17Y (LH/LJ)

28Pin

16Y/17Y (UH/SJ)

28Pin

16Y (UH)

18Pin

16Y/17Y

(UH/UJ)

A 28 (2/19)

Power Board Muitl Gender JIG Diagnostic model List

Existing 12Y, 13Y, 14Y, 15Y LED models included 15Y, 16Y, 17Y OLED, 16/17 Y LED model Power diagnosis function newly added

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

Year Product Model

EG92/EG93/EG94

‘15 OLED

OLED

EG96

EF95

B6 C6 E6

G6

‘16

‘17 OLED

’17 LED

LED

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

A 28 (3/19)

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.

A 28 (4/19)

LCD POWER”

Smart Jig Voltage Setting

1

▶ Check power board voltage.

2

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

▶ LCD MODEL Check the power voltage

and switch to the correct 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

- 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

A 28 (5/19)

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

A 28 (6/19)

`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.

A 28 (7/19)

`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.

A 28 (8/19)

`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.

A 28 (9/19)

`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

A 28 (10/19)

▶ 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

A 28 (11/19)

▶ 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)

A 28 (12/19)

▶ 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)

A 28 (13/19)

▶ 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

A 28 (14/19)

▶ 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

A 28 (15/19)

▶ 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

A 28 (16/19)

▶ 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

▶ Check power board voltage.

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

3

2

▶ Disconnect the Main Board 12Pin Power Cable connector.

4

▶ Connect the 12Pin Power Cable connector

to the Muitl Gender JIG 12Pin connector

A 28 (17/19)

▶ 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

▶ Check power board voltage.

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

3

2

▶ Disconnect the Main Board 12Pin Power Cable connector.

4

▶ Connect the 12Pin Power Cable connector

to the Muitl Gender JIG 24Pin connector

A 28 (18/19)

▶ 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

▶ Check power board voltage.

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

3

2

▶ Disconnect the Main Board 28Pin Power Cable connector.

4

▶ Connect the 28Pin Power Cable connector

to the Muitl Gender JIG 28Pin connector

A 28 (19/19)

▶ 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 43UJ651V Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual