LG 43UK6200PUA, 43UK6090PUA Schematic

CONFIDENTIAL

LED TV

SERVICE MANUAL

CHASSIS : UA83P

MODEL : 43UK6200PUA

MODEL : 43UK6090PUA

CAUTION

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

P/NO : MFL70427821 (1807-REV01)

Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

CONTENTS

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

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

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

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

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

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

EXPLODED VIEW .................................................................................. 22

ASSEMBLY / DISASSEMBLY ................................................................ 23

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 mod-

ule or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.

c. Connecting a test substitute in parallel with an electrolytic

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

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

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

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

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

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

contacts in not required.

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

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

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

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

service manual.

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

heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

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

devices are integrated circuits and some eld-effect transistors

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

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

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

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

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

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

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

electrical charges sufcient to damage ES devices.

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

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

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

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

General Soldering Guidelines

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

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

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

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

5. Use the following unsoldering technique

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

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

type solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the circuit board printed foil.

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

(500 °F to 600 °F)

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

the component lead until the solder melts.

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

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

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

splashed solder with a small wire-bristle brush.

- 4 -

IC Remove/Replacement

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

Removal

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

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

Replacement

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

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

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

"Small-Signal" Discrete Transistor Removal/Replacement

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

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

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

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

Power Output, Transistor Device Removal/Replacement

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

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

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

4. Insert new transistor in the circuit board.

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

6. Replace heat sink.

Diode Removal/Replacement

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

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

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

4. Securely crimp each connection and solder it.

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

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

Circuit Board Foil Repair

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

At IC Connections

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

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

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

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

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

At Other Connections

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

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

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

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

Fuse and Conventional Resistor Removal/Replacement

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

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

- 5 -

SPECIFICATION

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

.

1. Application range

This specification is applied to the LED TV used UA83P chassis.

2. Test condition

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

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

(4) Specification and performance of each parts are followed

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

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

the adjustment.

3. Test method

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

- Safety : CE, IEC specification

- EMC : CE, IEC

4. General Specification

No Item Specication Remark

1 Market North America

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

3 Available Channel VHF : 02~13

UHF : 14~69

DTV : 02-69

CATV : 01~135

CADTV : 01~135

4 Receiving system Digital : ATSC, 64 & 256 QAM

Analog : NTSC-M

5 Video Input NTSC-M Rear (1EA)

6 Component Input Y/Cb/Cr, Y/ Pb/Pr Rear (1EA)

7 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 Rear, Support 6Gbps

HDMI 4 PC / DTV format Rear, Support 6Gbps

8 Audio Input Component / AV Audio / DVI Audio L/R Input ; Rear

Component and AV and DVI use same jack ;

9 SPDIF out(1EA) Optical Audio out Rear (1EA),

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

Side(1EA), Rear(1EA)

- 6 -

5. External Input Support Format

5.1. Component (Y, PB, PR)

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

1 720*480i 15.73 59.94 13.50 SDTV, DVD 480I(525I)

2 720*480i 15.75 60.00 13.51 SDTV, DVD 480I(525I)

3 720*480p 31.47 59.94 27.00 SDTV 480P

4 720*480p 31.50 60.00 27.02 SDTV 480P

5 1280*720p 44.96 59.94 74.17 HDTV 720P

6 1280*720p 45.00 60.00 74.25 HDTV 720P

7 1920*1080i 33.72 59.94 74.17 HDTV 1080I

8 1920*1080i 33.75 60.00 74.25 HDTV 1080I

9 1920*1080p 67.43 59.94 148.5 HDTV 1080P

10 1920*1080p 67.50 60.00 148.5 HDTV 1080P

5.2. 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 Support to HDMI-PC

9 1920*1080 67.5 60 158.40 WUXGA

(Reduced Blanking)

10 1920*1080 135 120 297 UDTV 1080P

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

- 7 -

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*1080i 28.12 50.00 74.25 HDTV 1080I

13 1920*1080i 33.72 59.94 74.17 HDTV 1080I

14 1920*1080i 33.75 60.00 74.25 HDTV 1080I

15 1920*1080p 26.97 23.97 63.29 HDTV 1080P

16 1920*1080p 27.00 24.00 63.36 HDTV 1080P

17 1920*1080p 33.71 29.97 79.120 HDTV 1080P

18 1920*1080p 33.75 30.00 79.20 HDTV 1080P

19 1920*1080p 56.25 50.00 148.5 HDTV 1080P

20 1920*1080p 67.43 59.94 148.35 HDTV 1080P

21 1920*1080p 67.5 60.00 148.50 HDTV 1080P

22 1920*1080p 112.5 100 297.00 UDTV 1080P

23 1920*1080p 134.86 119.88 296.70 UDTV 1080P

24 1920*1080p 135.00 120 297 UDTV 1080P

25 3840*2160p 53.95 23.98 296.70 UDTV 2160P

26 3840*2160p 54 24.00 297.00 UDTV 2160P

27 3840*2160p 56.25 25.00 297.00 UDTV 2160P

28 3840*2160p 61.43 29.97 296.70 UDTV 2160P

29 3840*2160p 67.5 30.00 297.00 UDTV 2160P

30 3840*2160p 112.5 50.00 594 UDTV 2160P

31 3840*2160p 134.86 59.94 593.40 UDTV 2160P

32 3840*2160p 135 60.00 594 UDTV 2160P

33 4096*2160p 53.95 23.98 296.70 UDTV 2160P

34 4096*2160p 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

- 8 -

SOFTWARE UPDATE

1. USB

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

message

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

2. NSU

(This Function is needed to connect to the internet)

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

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

version

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

update

(5) TV is updating

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

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

Tool Option

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

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

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

and Tool Option

- 9 -

1. Main IC

Main IC

eMMC (4GB)

CI Slot

USB1 (2.0)

OCP

USB2 (2.0)

HDMI3

HDMI2(ARC)

HDMI1

Air/

Cable

TUNER

(T2/C/A)

TUNER

(S,S2)

DVB-S

LNB

T2/C/S/S2 H-NIM tuner

IF (+/-)

P_TS_OUT

P_TS_IN

Sub MICOM

X_TAL

32.768KHz

I2C 1

IR / KEY

LOGO LIGHT(Ready)

WIFI/BT Combo

USB_WIFI

X_TAL

24MHz

Sub Assy

LAN

ETHERNET

SPDIF

AV/COMP

CVBS/YPbPr

SPDIF OUT

H/P

AMP

RS-232

MAX323

MAIN Audio AMP

I2S Out

I2C 4

Vx1 51P (8 lane)

Vx1 / EPI/ CEDS

FCIC SPI/ I2C 6

EPI

PMIC

Level

shifter

M0

M1

IF_S

IF

GST/MCLK/GCLK/EO/I2C 6

NVRAM (256Kb)

I2C 4

I2C 2

EPI block

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

HDMI4

TS

DDR3 2133 X 32

(256MB X 2EA)

DDR3 2133 X 32

(512MB X 2EA)

EPI 60P (65”:8 lane, 55”↓:6lane), CEDS 68P

Area OPT

BLOCK DIAGRAM

- 10 -

2. EPI / CEDS

CEDS 6lane 68Pin / EPI 6Lane 60Pin

BOE Panel

3

840x2160@60p

1

.5Gbps

[ PAD_MOD_TX_P02/N02 ~ P09/ N09 ]

CEDS 6lane 68Pin / EPI 6Lane 60Pin

LGD Panel

3

840x2160@60p

3

Gbps(55” ↓ )

/ 2Gbps(65” )

PMIC

&

L

evel Shif ter

R

T6950( LGD)

S

W50212(BOE)

CLK(x10)

V

GL1

V

ST

G

IP_RST LS_VGL

V

GH_EVEN

V

GH_ODD

H

VDD

EPI 3Lane 60P ( 55” ↓ )

E

PI 4Lane 60P ( 65” )

EPI 3Lane 60P ( 55” ↓ )

E

PI 4Lane 60P ( 65” )

GMA

(

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

[

PAD_MOD_TX_P12(LVA3- )]

PMIC_RESET

LOCKOUT12

GST, E/O, MCLK, GLCK

[ PAD_I2S_IN_WS(TCON1)(GPIO)]

[

PAD_I2S_IN_SD(TCON2)(GPIO)]

[

PAD_SPDIF_IN(TCON3)(GPIO)]

[

PAD_GPIO16(TCON4)(GPIO)]

Sub PMIC

(

RT5093)

VDD

V

COM1

V

COMLFB

V

COMRFB

V

COM2

[ PAD_MOD_TX_P02/ N02 ~ P09/ N09]

GAMMA

(RT6508)

B

OE Only

GMA

(2, 3, 4, 7, 8,

1

1, 12, 15, 16, 17)

[ PAD_GPIO30SCK4]

[

PAD_GPIO31SDA4]

68p in

60p in

68p in

60p in

LDO

(

TJ4320)

VTERM

[ PAD_GPIO17_PM(PM_SPI_CK2]

[

PAD_GPIO18_PM(PM_SPI_DI2)]

[

PAD_GPIO19_PM(PM_SPI_DO2)]

[

PAD_GPIO10_PM(PM_SPI_CZ2)]

Main IC

- 11 -

3. Vx1

I2C_ A6

Vx1 8Lane 51P

A

H n

Panel

3840x2160@60p

LOCKAn

A

DATA_FORMAT_0/ 1

[ PAD_GPIO23]

[ PAD_MOD_TX_P00~ 07]

[

PAD_GPIO31SDA4]

[

PAD_GPIO24]

AGP_CTL

A

VX1_MSE

BIT [2:3] DISPLAY TYPE TYPE Data lane RGB/M+ COMMENT

[Level 0 : Level 0] LCD_UHD VBY1 N/A RGB/M+ V16_V17_V18

[Level 0 : Level 1]

[Level 0 : Level 2]

[Level 0 : Level 3]

[Level 1 : Level 0] LCD_UHD LGD_EPI_3G V18 6lane RGB

[Level 1 : Level 1] LCD_UHD LGD_EPI_3G V18 6lane M+

[Level 1 : Level 2] LCD_UHD LGD_EPI_3G V17 6lane M+

[Level 1 : Level 3]

[Level 2 : Level 0] LCD_UHD

BOE_CEDS_1.5

G

V18 12lane RGB

[Level 2 : Level 1] LCD_UHD

BOE_CEDS_1.5

G

17Y_18Y 12lane RGBW

[Level 2 : Level 2]

[Level 2 : Level 3]

[Level 3 : Level 0] LCD_UHD LGD_EPI_3G V18 8lane RGB

V18 8lane :

LGD 65UK75

65UK63

[Level 3 : Level 1] LCD_UHD LGD_EPI_3G V18 8lane M+

[Level 3 : Level 2] LCD_UHD

LGD_EPI_3G

Q- SAC

V18 6lane RGB

Q- SAC :

LGD 49inch

Only

[Level 3 : Level 3] LCD_UHD

LGD_EPI_3G

Q- SAC

V18 6lane M+

[ PAD_MOD_TX_P12(LVA3- )]

[

PAD_MOD_TX_N12 (LVA3+)]

[

PAD_GPIO30SCK4]

[

PAD_GPIO19]

[

PAD_GPIO20]

Main IC

IC

Main IC

- 12 -

4. Tuner

18Y Tuner

Main

[ B1_+3.3V_RF] 3

[ +3.3V_DEMOD_TU] 11

[

B3_+1.2V_DEMOD] 13

[

IF[ P] ] 8

[

IF[ N] ] 7

[

IF_AGC] 5

[

TU_SIF] 6

[

CVBS] 4

[

ERROR] 14

[

MCLK] 15

[

SYNC] 1 6

[

VALID] 17

AC5 [ PAD_TS2_CLK]

A

D4 [ PAD_TS2_SYNC] AC4 [ PAD_TS2_VLD]

E

WBS_TU

F

E_DEMOD1_TS_CLK FE_DEMOD1_TS_SYNC FE_DEMOD1_TS_VAL

D[ 0- 7] 18- 25

F

E_DEMOD1_TS_DATA [ 0- 7]

[

GPIO_27~ 34_TP0_D0~ D7]

[ RESET1_DEMOD] 10

/ TU_RESET1_TU

A

H4 [ PAD_GPIO13]

[

LNB_TX1] 12

[

LNB] 26

I2C_SCL_2

I

2C_SDA_2

+

3.3V_NORMAL

IF_P_TU

I

F_N_TU

T

U_SIF_TU

T

U_CVBS_TU

I

F_AGC_TU

A

L11 [ PAD_IP_T] AM10 [ PAD_IM_T] AM11 [ PAD_IFAGC_T] AL12 / AM12 [ SIF_P/ N]

Y

2 [ PADA_CVBS0]

+ D_Demod_Core

LNB1

I

C7001

LNB1_OUT

1.2 K Ω

5 [ SCL]

6

[ SDA] 8 [ TONECTRL]

2

[ LNB]

33 Ω

AG10 [ PAD_TGPIO2SCK1]

A

H10 [ PAD_TGPIO3SDA1]

AM8 [ PAD_IP_S]

A

L8 [ PAD_IM_S] AK10 [ PAD_QP_S] AL9 [ PAD_QM_S] AK8 [ PAD_IFAGC_S] AH9 [ PAD_GPIO26 (DISEQC_OUT)]

IF_S_IP_MAIN

I

F_S_IN_MAIN IF_S_QP_MAIN IF_S_QN_MAIN

[

I[ P] ] 59

[

I[ N] ] 60

[

Q[ P] ] 62

[

Q[ N] ] 61

[

SAT_AGC] 58

EXT_Demo d

O

ptio n

IF_S_AGC_MIAN

[

SCL_RF] 1

[

SDA_RF] 2

0 Ω

Main Ball No : 27*27 _pac kage

+3. 3V_NORMAL

3

.5V_ST

LNB1_TX

(Phillippine only)

Ready- Not user

IC

- 13 -

5. Video / Audio IN/OUT

HDMI_ARC

ST_GPIO_23_H0_ARC[AD8]

[AL12] PAD_SIFP

I2C_SDA_0_AMP1 / I2C_SCL_0_AMP1

AUD_SCK

AMP_RESET_N

AUDA_OUTR

AUDA_OUTL

H/P Jack

SIDE_HP_MUTE

[M3]PAD_EARPHONE_OUTR

[M2]PAD_EARPHONE_OUTL

TU_SIF_TU

H/P AMP

(IC6300)

LPF

[E10]PAD_GPIO7_PM

SPDIF_OUT

HP_LOUT_JACK

HP_ROUT_JACK

LPF

Main

IC

Tuner

AUD_LRCH

AUD_LRCK

AMP_MUTE

SPK_R+ / R-

SPK_L+ / L-

MAIN AMP

(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

[AL15]PAD_GPIO21

[

Y3]PADA_CVBS_OUT1

SIF_P

SIF_N

[AM12] PAD_SIFM

DTV/MNT_V_OUT

COMP1_Y/CVBS

[V2]PADA_GIN1P / [Y1] PADA_CVBS1

AV1_CVBS_DET

[

D3]PAD_I2S_OUT_SD2(GPIO

)

COMP1_Pb / COMP1_Pr / COMP1_DET

[W2]PADA_RIN1P / [v3]PADA_BIN1P / [C1] PAD_I2S_OUT_SD1

COMP1/AV1/DVI_L_IN

COMP1/AV1/DVI_R_IN

[

L2]PAD_LINEIN_L0 [L1]PAD_LINEIN_R0

[

E5]PAD_SPDIF_OUT

[E2]PAD_I2S_OUT_WS

[D1]PAD_I2S_OUT_SD

[D2]PAD_I2S_OUT_BCK

[F2]PAD_DDCR_DA / [F3]PAD_DDCR_CK

5

- 14 -

Main I

C

HDMI2.0_1_HPD

TMDS1 - D0/D1/D2/CLK

DDC_SCL1 / DDC_SDA1

MICOM

(IC3000)

HDMI2.0_1_5V_DET

HDMI2.0_2_HPD

TMDS2 - D0/D1/D2/CLK

DDC_SCL2 / DDC_SDA2

HDMI2.0_2_5V_DET

HDMI2.0_3_HPD

TMDS3 - D0/D1/D2/CLK

DDC_SCL3 / DDC_SDA3

HDMI2.0_3_5V_DET

HDMI2.0_4_HPD

TMDS4 - D0/D1/D2/CLK

DDC_SCL4 / DDC_SDA4

HDMI2.0_4_5V_DET

HDMI2 with ARC

H

DMI1

H

DMI3

H

DMI4

HDMI_CEC

HDMI_ARC

HDMI_CEC

6. HDMI2.0

- 15 -

RS232C

(IC7200)

WIFI_DM / DP

SOC_RX / TX

USB2.0_2_DM / DP

USB3

DEBUG_RX / TX

Main

USB2

USB2.0_3_DM / DP

MICOM

(IC3000)

Wafer

(P200)

Wafer

(P4000)

DEBUG UART

Wafer

(P201)

5

7 9 10 15 16 19 20

SOC_RX / TX

DCDC OCP

(IC4501)

+5V_USB3

WOL/WIFI_POWER_ON

COMBO_RESET

BT_WAKEUP_DEVICE

BT_WAKEUP_HOST

IR

LED_R

KEY2

KEY1

DCDC OCP

(IC4700)

DOUT1

RIN1

PHONE JACK

US Only

IC

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

- 16 -

I2C_SDA6

EPI PMIC

P7100

Vx1 51P

I2C_SCL6

1.8k Ω

I2C_SDA_1

I2C_SCL_1

Main IC

1.8k Ω

+3.3V_NOR

1.8k Ω

+3.3V_ST

MICOM

I2C_SDA4

I2C_SCL4

NVRAM

AMP

I2C_SDA2

I2C_SCL2

LNB

Tuner

1.8 k Ω

+3.3V_NOR

1.8k Ω

+3.3V_NOR

33 Ω

TCON_I2C_EN

33 Ω

100Ω

33 Ω

EPI / CEDS only

Vx1 only

8. I2C Map

- 17 -

WOL/ETH_POWER_ON

USB_CTL2

Main IC

MICOM

USB1 OCP USB1

INSTANT_BOOT

/USB_ODC2

USB_CTL3

USB2 OCP USB2

/USB_ODC3

SOC_RESET

BIT0~6

HW option

ADC 1~5

PCM_RESET

PCMCIA

OCP

PCM_5V_CTL

DATA_FORMAT_1

Panel

DATA_FORMAT_0

VX1_MSE

AGP_CTRL

HTPDAn/MCKL_A

LOCKAn

PMIC

PWM_DIM2

POWER

PWM_DIM

L/D_CLK

L/D_DO

L/D_VSYNC

TCON_I2C_EN/GCLK_A

VID_CPU

CPU DCDC

VID_CPU2

VID_CORE

CORE DCDC

/TU_RESET1

Tuner

AMP_RESET_N

Audio AMP1

COMP1_DET

Component/AV Jack

HP_DET

H/P Jack

AV1_CVBS_DET

9. GPIO

- 18 -

IC100

RS232C

Debug port

P200

SOC_RX/TX

MICOM DEBUG 4P

P3000

MICOM_DEBUG

AMP

IC5800

AMP_MUTE

MODEL1_OPT_0/1/2/ 3

GND

+13V TO PANEL_VCC

PANEL_CTL

HDMI 1 / 2 / 3 /4

JK3101/JK3102/JK3103/JK3104

HDMI_CEC

RESET IC

IC1300

POWER_DET

POWER WAFER

P1001

INV_CTL

MODE_SELECT_PWM1

RL_ON

I2C_SCL_1_MICOM / I2C_SDA_1_MICOM

WOL/ETH_POWER_ON

SOC_RESET

INSTANT_BOOT

OPT0 NON LOGO LCD/LOGO LCD

NON LOGO OLED/LOGO OLED

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

OTP2 RESERVED

OPT3 M16/RTK/H15

MICOM_RESET

MICOM X- TAL

X3001

32.768KHz 51P VX1 Wafer

AM_MODE_DET_OLED

IR / KEY/WIFI/BT

P4000

EDID_WP

3D&L_DIM_EN

3.5V_ST- 1.5V DCDC

IC2303

POWER_ON/OFF2_3

13V- 3.3V NORMAL

IC2300

13V- 1V DCDC

IC2302

POWER_ON/OFF2_4

POWER_ON/OFF1

13V- 5V NORMAL DCDC

IC2500

WIFI_EN

T_CON_SYS_POWER_OFF_OLED

IR

EYE_SCL / EYE_SDA

WOL/WIFI_POWER_ON

BT_WAKEUP_DEVICE

COMBO_RESET

BT_WAKEUP_HOST

KEY1 / KEY2

LED_R

GND

+3.5V WIFI

RETENTION_DISABLE

GND

10k Ω

SYSTEM_DEBUG

Main IC

10. GPIO(MICOM – ABOV)

- 19 -

LDO DCDC

D

13.2V

3.5V ST

4

A

I

C2305

MICOM

IR Ass’y

RS-232

WiFi Module

FET

FET(Q4101)

+AVDD_NODIE

L302

1.5V DDR

3

A

I

C2302

SoC(DDR)

CPU_1V0

3

A

I

C2309

SoC(VDDC_CPU)

FET(Q1101)

Panel_VCC L7601/2 L1100

+AVDD33_AU33

L322

+AVDD_DMPLL

L333

CORE_1V0

1

2A

I

C2310

SoC(VDDC)

LNB L7100

11. Power

- 20 -

D

13.2V

3.3V NORM

3

A

I

C2302

HP Amp

NVRAM

SPDIF OUT

Pull up

GAMMA IC

SoC(

VDDP_3318_C

)

SoC(+VDDP33)

L319

1.8V

1

A

I

C2307

L330

SoC(EMMC1V8)

EMMC VCCQ

EMMC VCC

L2300

Audio Amp

L5801

+3.3V_DEMOD

L6503

+3.3V_TU

L6505

LNB

L7001

5V NORM

4

A

I

C2500

USB1 OCP

USB2 OCP

CI OCP

A13.2V

Audio Amp

EPI_FCIC Flash

L2301

L331

+1.2V_DEMOD

L6900

12. Power 2

- 21 -

400

800

540

521

120

820

LV1

121

500

570

571

LV2

AR1

700

A10

ARC1

530

HP1

HW1

HS1

200

900

EXPLODED VIEW (SET)

IMPORTANT SAFETY NOTICE

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

- 22 -

DISASSEMBLY GUIDE (SET)

1

3

Latch 8 EA

Screw 5EA(M3*5.5)

1

Hook 11 EA

Screw 2EA(P3*10)

Screw 1EA(P4*10)

Hook Latch

1. After Screw Disassemble, please remove B/C from Module

- 23 -

Detach tape

2. Detach Tape

3. Remove all sort of cable

- 24 -

WIFI/BT IR Sub Assy

Disassemble screw(1ea) and

Remove cable from holder

Detach Hook

4. IR assy, Wi-Fi PCB assy disassembly

- 25 -

“A” “B”

1

Screw 9EA(M3*5.5)

1

5. Screw disassembly

- 26 -

6. Speaker disassembly

Detach hook

Screw 4EA(M3*5.5)

1

7. Screw disassembly

- 27 -

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

12

A. Video error

B. Power error

C. Audio error

D. Function error

No video/Normal audio 1

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

No power 6

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

No audio/Normal video 9

Remote control & Local switch checking

MR remote operating checking 12

Wifi operating checking 13

7,8

11

5

14 External device recognition error 14

15 E. Noise Circuit noise, mechanical noise 15

16 F. Exterior error Exterior defect 16

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

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 or EPI 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 13.2V output

On

Normal voltage

N

Repair Power Board or parts

Y N Check Power

Board

13.2V etc.

Y

Replace Inverter

or module

Normal

voltage

N

Repair Power Board or parts

End

Replace T-con/Main

Y

Board or module

1/16

※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 various voltages of Power Board (13.2V…)

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

2/16

2

Standard Repair Process

☞ A3

Check RF Signal level

Normal

Signal?

N

Check RF Cable

Connection

1. Reconnection

2. Install Booster

Normal

Picture?

Y

Close

Y

N

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?

Contact with signal distributor

or broadcaster (Cable or Air)

Y

S/W Version

N

Check

SVC

Bulletin?

S/W Upgrade

Normal

Picture?

Y

N

Y

N

Check

Tuner soldering

N

Replace

Main B/D

Y

3/16

Close

3

Standard Repair Process

☞A6

Check color by input

-External Input

-AV

-HDMI

☞A8

Check Test pattern

Error

symptom

Color

error?

Check error color input mode

☞ A7

※ Check

and replace

Y

Link Cable (EPI or Vx1

N

Cable) and contact condition

External Input/

Component

error

A. Video error

Color error

Color

error?

Check external device and cable

N

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

4/16

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

-HDMI

☞A8

Check Test pattern

Screen

normal?

N

Replace module

Y

Check external device connection condition

Normal?

N

Request repair

for external device

External device screen error-Color error

☞ A7

Check and

Y

replace Link Cable

Established

date

Revised date

Screen

normal?

End

N

Y

Replace Main/T-con B/D

For LGD panel

Replace Main B/D

For other panel

5/16

Replace Module

N

Screen

normal?

Y

End

Check S/W Version

Check

version

S/W Upgrade

Normal

screen?

End

N

Y

N

Y

Check screen condition by input

-External Input

-Component

-HDMI/DVI

External

Input

error

Component

error

HDMI/

DVI

5

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.

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

Screen

normal?

N

Y

N

Replace Main/T-con B/D

Replace Main /T-con B/D

Standard Repair Process

symptom

☞A17

Check LED

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

Power LED

Check Power cord was inserted properly

Error

On?

N

Normal?

Y

Close

N

Y

B. Power error

Check ST-BY 3.5V

☞A18

No power

DC Power on by pressing Power Key On Remote control

Y

Normal

Y

voltage?

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

6/16

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

N

Abnormal

Established

Revised date

CPU

1

date

Replace Main B/D

7/16

Normal?

Replace Power B/D

Y

N

End

7

Standard Repair Process

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.

Power Off list Explanation Action contents

KEYTIMEOUT

1SEC Power OFF

ACDET

5V MNT

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

NO POLING

CPUCMD

INV_ERROR

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

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 COMP_END OLED threshold voltage degradation(Compensation) completes.

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

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

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.

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

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.

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

Power off by main SoC command. Check & Change Main B/D Power off by module error (OLED)

CONDITION : OLED Module send signal to micom

No meaning (same as initial value)

Established

date

Revised date

8/16

Check & Change Main B/D

Check & Change Power B/D

Check & Change Main B/D

Check & Change OLED Module

Normal Case

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

N

13.2V of Power Board

Established

date

Revised date

Normal voltage

Replace Power Board and repair parts

Y

N

9/16

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 (13.2V)

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?

10/16

End

Check and fix external device

10

Standard Repair Process

Error

symptom

D. Function error

Remote control & Local switch checking

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

Y

N

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

Check B+3.5V

On Main B/D

Established

date

Revised date

☞A22

N

Y

Check IR

Output signal

Normal

Voltage?

☞A18

Check 3.5v on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

11/16

Replace

Main B/D

Normal

Signal?

N

Repair/Replace

IR B/D

Y

11

Standard Repair Process

Error

symptom

D. Function error

MR remote operating checking

2. MR18(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 MR18

itself Operation

N

Close

Normal

operating?

Check & Replace

Battery of MR18

Normal

operating?

N

Replace

MR18

Y

N

Y

Press the

wheel

Close

Established

date

Revised date

Is show ok

message?

Y

Close

Is show ok

message?

Close

Y

Turn off/on the

N

set and press

the wheel

N

12/16

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 MR18.

12

Standard Repair Process

Error

symptom

3.Wifi operating error

☞A4

Check the

INSTART menu

Wi-Fi Mac value

is “NG”?

☞A24

Check & Repair

Y

Wifi cable

connection

☞A4

Wi-Fi Mac value

is “NG”?

D. Function error

Wifi operating checking

☞A24

N

Check the Wifi wafer

N

Close

1pin

Established

Revised date

Normal

Voltage?

Y

Close

date

N

13/16

Replace

Main B/D

Change the Wifi

Y

assy

13

Standard Repair Process

Check input signal

Error

symptom

Y

Signal

input?

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

14/16

Replace Main B/D

15

Standard Repair Process

Identify nose type

Error

symptom

Circuit

noise

Mechanical

noise

※ Mechanical noise is a natural phenomenon, and apply the 1st level description. When the customer does not agree, apply the process by stage. ※ Describe the basis of the description in “Part related to nose” in the Owner’s Manual.

Check location of noise

Circuit noise, mechanical noise

E. Noise

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)

15/16

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

16/16

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

9

10 Exchange Main Board (1) ~ (3)

<Appendix> Defected Type caused by T-Con/

11 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 (Vx1/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

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

13 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

14

B. Power error_ No power

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

16

17

18

19

20 Motion Remote operation checking method A24

21

22 Check items after Main B/D replacement A28

23 Adjustment Test pattern – ADJ Key A29

B. Power error_Off when on, off while viewing

C. Audio error_ No audio/Normal video

D. Function error

E. Etc

Check front display LED A17

POWER OFF MODE checking method A20

Checking method in menu when there is no audio

Voltage and speaker checking method when there is no audio

Remote control operation checking method A23

How to use the Service remote control A25-A27

A21

A22

24

How to use JIG (Power B/D Diganostic Smart Jig Multi Gender

A30

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 control for adjustment.

2. Enter into White Balance.

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

A. Video error_Video error, video lag/stop

Version checking method

Established

date

Revised

date

A4

1. Checking method for remote control for adjustment

Version

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.

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(EPI) 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

Picture problem due to tuner

Top/bottom screen part

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

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

B. Power error _No power

Check front Power Indicator

Established

date

Revised

date

A17

Standard Repair Process Detail Technical Manual

SET Model

Power P/N, Name

43UK63

EAY64529501, LGP43DJ-17U1

MS Level

Range [V]

LED On/Off

MS (0V)

0 ~ 0.25

Off

MS (2V)

1.75 ~ 2.25

On (Home mode)

MS (3V)

2.75 ~ 3.25

On (Store Mode)

Picture Condition : VIVID (Back light 100)

Min

Max

61.2V

74.8V

Error

symptom

Content

Power Check Sequence

1. AC input Check : SK100 (100~240Vac)

2. PWR-ON Check :

- SET On : above 3V

- SET St-by : 0V

3. 13.2V DC Check :

- SET On : 13.2V

- SET St-by : 7.8V

4. MS Level Check : MS

5. LED voltage Check : P801, Pin 1-7

※ Home mode : General Customer Store mode : use Store

B. Power error _No power

Check power input voltage and ST-BY 7.8V

P801

Established

date

Revised

date

A18

P201

all condition meets, Power Board OK.

SK100 (AC input)

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

A20

Entry method

1. Press the IN-START button of the remote

control for adjustment

2. Check the entry into adjustment item 3

A20

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

A21

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

A21

Standard Repair Process Detail Technical Manual

Error

symptom

Content

C. Audio error_No audio/Normal video

Voltage and speaker checking method when there is no audio

②

Established

Revised

date

①

date

A22

Checking order when there is no audio

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

2. Measure the 13.2V 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.

A22

③

1 SPK_R-FT

2 SPK_R+FT

3 SPK_L-FT

4 SPK_L+FT

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Remote control operation checking method

D. Function error

Established

date

Revised

date

A23

① IR & EYE Sensor

IR & LOGO light Rear

IR

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 16 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.

Eye

②

③

1 2 3 4 5 6 7 8 9

BT_WAKEUP_DEVICE 10 11 12 13 14 15 16 17 18

19

20 21 22 VCC 23 KEY2 24 KEY1 25 GND

Pin name

VCC

USB_DM

USB_DP

GND

WOL/WIFI_ON

VCC

COMBO_RESET

GND

BT_WAKEUP_HOST

GND GND

EYE_SDA EYE_SCL

GND

IR

LED_R

GND

A23

Standard Repair Process Detail Technical Manual

Error

symptom

Content

Remote control operation checking method

D. Function error

Established

date

Revised

date

A24

① Wifi & BT Front

Wifi & BT Rear

②

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 22

③

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

WOL/WIFI_POWER_ON_JACK

Pin name

+3.5V_WIFI

WIFI_DM_JACK

WIFI_DP_JACK

+3.5V_WIFI

COMBO_RESET_JACK

BT_WAKEUP_DEVICE_JACK

BT_WAKEUP_HOST_JACK

EYE_SDA_JACK

EYE_SCL_JACK

IR_JACK

LED_R_JACK

+3.5V_ST KEY2_JACK KEY1_JACK

A24

Standard Repair Process Detail Technical Manual

Error

1. How to access the remote control

symptom

Content

How to use the Service remote control

D. Function error

0 4 1 3

Established

date

Revised

date

A25

0 4 1 3

A25

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

A26

ETC (Added Function)

P-ONLY (Added Function)

INPUT Change to the external device mode

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

PSM

SSM (Added Function) Standard(user)=>music=>cinema=>sports=>game=>standard(user)

PIP Picture In Picture is activated

TEXT Access to the Power Only mode

CAP Broadcasting caption(on/off)

MPX Stereo mode (mono, stereo, foreign language) access

Used when in factory mode

Simplink (Added Function)

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

[PIP INPUT][DVI] KEY Function

Changed to factory mode

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

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

Custom PIcture1=>Custom Picture2=>Bright Picture

Access to the Simplink-connected device

EYE

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

Digital EYE function ON/OFF

For some Model, access to the Test Pattern

A26

Standard Repair Process Detail Technical Manual

Error

symptom

Content

How to use the Service remote control

D. Function error

Established

date

Revised

date

A27

B-TOOTH (Added function)

IN-START

ADJ

X-STUDIO (Added function) HDD,USB, external device’s HDD screen is activated

MENU User function gets activated

EXIT Exit from the current mode

TIME SHIFT (Added function)

MUTE Mute function (0 Volume)

IN-STOP SET to factory mode

VOL + - Volume Up/Down

Connected to Blue-Tooth

Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex)

V03.11.0 Current S/W version

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

POWER OFF STATUS ex) Shows power-off status

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

Moves forward/backward of recorded contents

CH + - Channel Up/Down

AV1,2,3 (Added function) Connects to external input 1,2,3

COMP1,2 (Added function) Connects to Component 1,2

HDMI1,2,3,4 (Add function)

DVI (Add function) Connects to DVI

Connects to HDMI 1,2,3,4

A27

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.

A28

2. Press the Service remote control ADJ Key.

A14

A28

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

A. Video error_Color error

Adjustment Test pattern - ADJ Key

Established

date

Revised

date

A29

You can view 6 types of patterns using the ADJ 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!)

A29

Smart JIG Power Diagnosis

Muitl Gender Guide

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

A 30 (1/19)

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

18 Marking check

New JIG

No Marking

OLD JIG

28Pin

18Pin

24Pin

13Y/14Y

12Y

24Pin

15Y

(LF/UF Series)

24Pin

16Y (OLED B6)

24Pin

32LK62 43/49LK61

15Y (OLED)

24Pin

NC

C8

24Pin

28Pin

16Y

(OLED)

17Y

(OLED)

SK85/SK96 SK95/SK99

24 Marking Check

28Pin

Cable Connection

17Y/18Y (SJ/UJ/SK)

UK63/UK64 UK65

12Pin

16/18Y (UH/UK)

16Y/17Y (LH/LJ)

12Pin

Includes 49UJ63

16Y/17Y (UH/SJ)

28Pin

16Y

(UH)

18Pin

16Y/17Y

(UH/UJ/SK)

A30 (2/19)

Power Board Muitl Gender JIG Diagnostic model List

Existing 12Y, 13Y, 14Y, 15Y LED models included 15Y, 16Y, 17Y/18Y OLED, 16/17/18 Y LED model Power diagnosis function newly added

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

Year Product Model

‘15 OLED

OLED

‘16

LED

LH68, LH66, LH60,LH54

‘17 OLED

’17 LED

EG92/EG93/EG94

EG96

EF95

B6, C6 E6, G6

UH95/UH96 UH85/UH93 UH77/UH87 UH75/UH76 UH65/UH68

B7, C7 E7, G7

W7

SJ95/UJ98 SJ85/UJ94

SJ80, UJ77

UJ75/UJ78 UJ65/UJ68 UJ63/UJ67

LJ61/LJ68 LJ55/LJ58

‘18 LED

‘18 OLED

SK95/SK85 SK81/SK80

UK63/UK64/UK65

32LK62, 43/49LK61

C8

A30 (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.

A30 (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

A30 (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

A30 (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.

A30 (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.

A30 (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.

A30 (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

A30 (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

A30 (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)

A30 (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)

A30 (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

A30 (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

A30 (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

A30 (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

A30 (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

A30 (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

A30 (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.

Standard Repair Process Detail Technical Manual

Error

symptom

Content

A. Video error_Color error

Adjustment Test pattern - ADJ Key

Established

date

Revised

date

A29

You can view 6 types of patterns using the ADJ 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!)

A29

55UK63xxPSx PMIC voltage measurement point

N

o

Test

name

Spec

Min(-5%)

Max(+5%)

1

VTERM

1.2V

1.14

1.26

2

VCC18

1.98V

1.88

2.08

3

VCOM1

5.33V

5.06

5.60

4

VCOM2

5.33V

5.06

5.60

5

P VGL

-7V

-6.65

-7.35

6

LS VGL

-15V

-14.25

-15.75

7

VGH

30V

28.50

31.50

8

VST

-15V

-14.25

-15.75

9

VGH EVEN

28V/-

15V

26.60 / -

14.25

29.40 / -

15.75

10

VGH ODD

28V/-

15V

26.60 / -

14.25

29.40 / -

15.75

11

PM VCC

5V

4.75

5.25

12

LS VGL

-15V

-14.25

-15.75

13

HVDD

8.23V

7.82

8.64

14

VDD EPI

16.8V

15.96

17.64

Mode Name : 55UK63xxPSx Test Point and Volt Spec

PCB Test Point

[Unit:Volt] Test Spec

PMCI JIG Point

⑦VGH

⑥LS VGL

⑦

⑩VGH ODD

⑩

⑨VGH EVEN

⑤P VGL

⑥

③

⑤

② ④

⑧

⑨

⑧VST

③VCOM1

②VCC18 ①

④VCOM2

①VTERM

⑭VDD EPI

⑭

⑬HVDD

⑫LS VGL

⑫ ⑬

⑪PM VCC

⑪

LG 43UK6200PUA, 43UK6090PUA Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual