LG 24MP58D Service Manual

Internal Use Only

North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com

COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : LM69A

MODEL:

CAUTION

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

P/NO : MFL67715299(1510-REV00) Printed in China

24MP58D

CONTENTS

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

PRECAUTION............................................................................................3

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

SPECIFICATIONS......................................................................................6

TIMING CHART .......................................................................................11

ADJUSTMENT .........................................................................................14

BLOCK DIAGRAM...................................................................................18

TROUBLE SHOOTING ............................................................................19

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

SVC. SHEET ...............................................................................................

- 2 -

LGE Internal Use Only

PRECAUTION

WARNING FOR THE SAFETY-RELATED COMPONENT.

• There are some special components used in LCD monitor that

are important for safety. These parts are marked on the schematic diagram and the Exploded View. It is essential that these critical parts should be replaced with the manufacturer’s specified parts to prevent electric shock, fire or other hazard.

• Do not modify original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee.

TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.

• Must mount the module using mounting holes arranged in four corners.

• Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

• Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.

• Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or LIPS part, must disconnect the AC power because high voltage appears at inverter circuit about 650Vrms.

• Handle with care wires or connectors of the inverter circuit. If the wires are pressed cause short and may burn or take fire.

Leakage Current Hot Check Circuit

AC Volt-meter

Good Earth Ground such as WATER PIPE,

To Instrument's exposed METALLIC PARTS

When 25A is impressed between Earth and 2nd Ground for 1 second, Resistance must be less than 0.1

*Base on Adjustment standard

0.15uF

1.5 Kohm/10W

CONDUIT etc.

Ω

• Make certain that treatment person’s body are grounded through wrist band.

• Do not leave the module in high temperature and in areas of high humidity for a long time.

• The module not be exposed to the direct sunlight.

• Avoid contact with water as it may a short circuit within the module.

• If the surface of panel become dirty, please wipe it off with a softmaterial. (Cleaning with a dirty or rough cloth may damage the panel.)

CAUTION

Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.

- 3 -

LGE Internal Use Only

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 conflict 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 re-connecting 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 specified 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) is opropyl alcohol (90%-99% strength) CAUTION: This is a flammable mixture. Unless specified 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 fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture 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 field-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 classified as "anti-static" can generate electrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient 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 floor can generate static electricity sufficient 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 500ºF to 600ºF.

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 1.25cm) 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.

(500ºF to 600ºF) 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

(500ºF to 600ºF)

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 flows 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 -

LGE Internal Use Only

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat 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 TransistorRemoval/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.

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.

Diode Removal/Replacement

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

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

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

4. Securely crimp each connection and solder it.

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

Fuse and Conventional Resistor Removal/Replacement

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

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

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

- 5 -

LGE Internal Use Only

1. General Specification

SPECIFICATIONS

No Item

1 Customer BRAND

2 User Model Name xxMP58VQ, xxMP58D, xxMP58A

3 Sale region Refer to Suffix standard 4 Feature 21.5”/ 23.8” / 27” WIDE LCD MONITOR

Chassis Name LM68A

5

General Scope

6

7 Input

8

External SW

&Adj.

Function

D-SUB IN RGB Analog

DVI IN DVI IN

HDMI IN HDMI IN

HP OUT Audio L/R OUT

Power Cord

LM69A LM6AA

Joystick OSD (Menu, Picture Mode, Input, Power off)

OSD,DDC2B,DDC2AB, HDCP, Control Lock, Original Ratio / Wide, Black level, Smart Energy Saving Screen Split, SUPER RESOLUTION+，Color Wizard,

Reader mode, LG Color Cloning, Black Stabilizer

Length : 1.5±0.05 M Shape : Wall-out Color : Black

Content Remark

xxMP58VQ

xxMP58D xxMP58A

xxMP58VQ

xxMP58D xxMP58A

1ea at the back

xxMP58VQ

xxMP58D

1ea at the back

xxMP58VQ

1ea at the back

xxMP58VQ

1ea at the back

Refer to Suffix

standard and power

cord table

9 Cable

Length : 1.5m

Signal Cable

(D-SUB)

Signal Cable

(DVI)

Signal Cable

(HDMI)

Audio

TV Length : ,Shape : ,Color: ,Pin

Shape : Detachable Type Color : Black Pin : Triple Row, 15 Pin D-Sub

Length : 1.5m Shape : Detachable Type Color : Black Pin : Triple Row, 24 Pin DVI

Length : 1.5m Shape : Detachable Type Color : Black Pin : 19Pin HDMI

Length : 1.5 Color: Black , Pin:2P

MP58VQ/D/A :

Refer to Suffix

standard

MP58VQ/D/A :

Do not Support

MP58VQ :

Refer to Suffix

standard

MP58D/A :

Do not Support

MP58VQ/D/A :

Do not Support

MP58VQ/D/A :

Do not Support

- 6 -

LGE Internal Use Only

1. General Specification

10 Power

SPECIFICATIONS

Input: AC100~240V 50~60Hz,1.0A Max ; DC 19V 1.6A; DC 19V 1.3A Output: DC 19V 1.7 A Output: DC 19V 1.3 A

P/N: EAJ63109401 LM215WF3-SJJ5

MP58VQ/D/A :

(22/24MP58VQ/A/A

use

1.3A ,27MP58VQ/D/A use 1.7 A)

Refer to Suffix

standard

22MP58VQ/D/A

Applied Panel List

11

Applied BLU List

2. Mechanical specification

No Item Content Remark

Width (W) Length (D) Height (H)

1

Product

Dimension

Product

2

Weight

Before Packing 550.5mm

After Packing 609 mm 395 mm 129 mm

Only SET

With BOX

P/N: EAJ62570001 LM238WF1-SJE1

P/N: EAJ63370101 LM270WF5-SJN1

P/N: EBV61138104

P/N: EBV61158009(BLACK)

P/N:EBV61158010(WHITE)

P/N: EBV61138207(BLACK)

P/N:EBV61138208(WHITE)

550.5mm

186.8mm

85.5mm

3.2kg

4.6kg

419mm

332.1 mm

24MP58VQ/D

27MP58VQ

22MP58VQ/D/A

24MP58VQ/D

27MP58VQ

With stand

Without stand

- 6 -

LGE Internal Use Only

3. Optical Character

No Item krameR airetirC

1

Viewing Angle <CR≥10>

Horizontal(R/L) : 170(Min), 178(Typ)

Vertical(Top/Bottom) : 170º(Min), 178º(Typ)

2

Luminance(휘도)

Max Luminance

200(min), 250(Typ) (Full white pattern, 0.7V)

Custom

6500K Luminance

200 (min) (Full white pattern, 0.7V)

Warm

8000K Luminance

180(min) (Full white pattern, 0.7V)

Medium

9300K Luminance

150(min) (Full white pattern, 0.7V)

Cool

Luminance Uniformity

,)nim(%57

3

Contrast Ratio(명암 비)

600(MIN), 1000(TYP), DFC->5,000,000:1 (Typ.)

4 Response Time

-.Off : 14ms

-. Low : 9 ms ~ 11 ms

-. Middle : 7 ms ~ 9 ms

-. High : 5 ms ~ 6.5 ms

5 Light Leakage Condition: Do not visible at 300 Lux

Minimum Normal Maximum

WX

Typ-0.03

White

CIE Color

Coordinates

6

(색 좌표)

RED

GREEN

BLUE

WY 0.329

WX

WY 0.305

WX

WY 0.298

WX

WY 0.360

WX

WY 0.367

RX

RY

G

X

GY

B

X

BY

Typ-0.03

0.313

0.295

0.283

0.365

0.353

0.651

0.338

0.318

0.612

0.151

0.065

Typ+0.03

Warm

(6500K)

Medium

(8000K)

Cool

(9300K)

Warm

(6500K)

- 7 -

LGE Internal Use Only

4. Engineering Specification

1

2 Operating Frequency

3 Resolution

4

5 Inrush Current Cold Start : 50 A Hot : 120 A

6

Supported Sync. Type

Separate Sync., Digital

Analog/ Digital/ HDMI

Horizontal 30  83kHz

Vertical 56  75 Hz

Max. 1920×1080 @ 60Hz

Recommend 1920×1080 @ 60Hz

Input Voltage Voltage :100 – 240 Vac, 50 or 60Hz, 1.0A

Operating Condition

Sync (H/V)

Video LED Wattage

22MP58VQ/D/A

typ: 24(W) max:28(W)

24MP58VQ/D

On Mode On/On Active White

typ: 26(W) max:30(W) 27MP58VQ typ: 29(W) max:34(W)

Off/On

Sleep Mode

On/Off Off/Off

Off White Blinking

(this spec have

to meet all inch)

<0.3W

Analog :

-. MP58VQ/D/A Digital :

-. MP58VQ/D HDMI :

-. MP58VQ

Test condition

1.1920x1080@60Hz

2. burst pattern

3. 100~240V

4. After aging 30min

측정방법) 제어판 Æ 전원 옵션에서 디스플레이 끄기 와 PC를 절전모드로 하기 두가지 설정이 있는데, PC 를 절전모드로 하기만 선 택하고 측정해야 함.

Off Mode

(Power switch off)

Smart Energy Saving

EPA

- - Off

High

/Low/O

Low White

ff

<0.3W

(this spec have to meet all inch)

Efficiency :

Low:10%~20%

High:20%~30%

Low:>1W(22) Low:>2W(24/27) High:>3W(22) High:>4W(24/27)

22MP58VQ/D/A

<20(W)

24MP58VQ/D

<24(W)

27MP58VQ

<27(W)

-T e st Conditi on (1)

200nits ：margin >7%

Worst :margin>0

- 8 -

LGE Internal Use Only

7

8

9

MTBF

Using Altitude

Environmen

t

Condition

0peratin

g

Storage

30,000 HRS with 90%

Lamp Life : 30,000 Hours(Min)

Confidence level

5,000 m (for Reliability) 3,000m(for FOS)

Temperature

10 °C ~ 35 °C Humidity 10% ~ 80% Temperature

-20 °C ~ 60 °C

Humidity 5% ~ 90% non-condensing

Brightness 0~100 ,

OSD Menu

Quick Settings

Contrast 0~100

Volume 0~100

Only HDMI

- 9 -

LGE Internal Use Only

Picture

Ratio Original/Wide

SES Off/Low/High

Picture Mode

Custom/Reader1/Reader2/Photo/ Cinema/Color Weakness/Game

SUPER RESULUTION+

Off/Low/ Middle/High

Sharpness 0~100

Black Level Low/High

Picture Adjust

Response Time

Off/Low/Middle/ High

Overscan Off/On

DFC Off/On

Black Stabilizer 0~100

Off/Gamma0/Gam ma1/Gamma2

Custom/Warm/Me dium/Cool

Color Adjust

Gamma

Color Temp

Red 0~100

Green 0~100

Blue 0~100

Six Color 0~100

Reset Reset/Cancel

Horizontal 0~100

Except 16:9 Ratio

Only HDMI

RGB format – High YCbCr format - Low

Only HDMI

All Hue & Saturation

Vertical 0~100

Display

Clock 0~100

Phase 0~100

English, Germanic, French, Spanish, Italian, Swedish, Finnish, Portuguese,

Language

Polish, Russian, Greek, Chinese, Japanese, Korean, Ukrainian, Portuguese(brazil), Hindi

General

Power LED Off/On

Automatic Standby

4Hr – EU, EK, PD, MA, EW Off / 4H / 6H / 8H

Resolution Off/similar resolution

OSD Lock Off/On

Auto Configuration Cancel/Yes

Reset Reset/Cancel

Only D-sub

Total 17ea

Depend on BOM suffix (Country)

Only D-sub

Only D-sub input

Only for training and service purposes

-10 -

LGE Internal Use Only

5. Applying module Character

6

CIE Color

Coordinates

(색 좌표)

Minimum

Normal

Maximum

White

WX

Typ-0.03

0.313

Typ+0.03

Warm

(6500K)

WY

0.329

White

WX

Typ-0.03

0.302

Typ+0.03

Medium (8000K)

WY

0.311

White

WX

Typ-0.03

0.283

Typ+0.03

Cool

(9300K)

WY

0.298

White

WX

Typ-0.03

0.365

Typ+0.03

WY

0.360

White

WX

Typ-0.03

0.353

Typ+0.03

WY

0.367

Red

RX

Typ-0.03

0.653

Typ+0.03

RY

0.337

Green

GX

0.322

GY

0.611

Blue

BX

0.153

BY

0.061

No Item Content Remark

Maker LGD Type TFT Active Display Area 23 inches(58.42 cm) diagonal Pixel Pitch [mm] 0.2652 mm x 0.2652(V) mm Electrical Interface 2ch-LVDS Color Depth 6-bit with A-FRC, 16.7M colors

LCD Module

1

Feature

Size (Outline) [mm] 527(H) x 309.8 (V) x 8.9 (D) mm Surface T

reatment

Hard coating the front polarizer

(3H), Anti-glare treatment of

Operating Mode Transmissive mode, normally Black Back light Unit White LED

R/T

Typical 14ms Max. 25ms

(1) Standard Measurement Condition

• Ambient Luminance Level : dark ( < 10 lux)

• Ambient Temperature : Normal Temperature(10ºC ~ 25ºC)

• warm-up Time : More than 30 min (at Full White Pattern)

• Input Signal : VESA 1920 X 1080 @ 60 Hz

• Contrast : 70 (But, the contrast is 100 when we check response time)

• Brightness : Max. 100

• Color Temp : CUSTOM

• Clock/Clock Phase : The Best Setting (2) Another Spec.: Product Specification Standard( LG(55)G1-1034 ) (3) Cosmetic Spec. : LCD Module IIS Spec.

5.1 Display Area

1) Active Display Area of the LCD Monitor Should be within Cabinet’s Bezel.

2) Distance Difference between Active Area and Bezel | A-B|<1.0 mm , | C-D|<1.0 mm

A: The Distance from The Left of Active Area to the Bezel B: The Distance from The Right of Active Area to the Bezel C: The Distance from The Top of Active Area to the Bezel D: The Distance from The Bottom of Active Area to the Bezel

Only for training and service purposes

C

Active area

A

A A B

- 11 -

Bezel

D

LGE Internal Use Only

6. EDID

6.1 2

No Item Content

1 Manufacturer ID GSM 1E 6D

2 Product ID

3 Year 2014 4 Version 1 01

5 Revision

6 Serial Number * *

7 Week ** ** 8 Model Name LG IPS Full HD 9 Check Sum **** ****

10 Special Item Need to Input Serial Number

** Protocol : DDC 2AB

6.2 EDID Ver. 1.3 FOR ANALOG

(Analog)

(DVI)

(HDMI)

Analog : 3

Digital: 3

HDMI: 3

16진 Data

23222 (5AB6)

23223 (5AB7) 23224 (5AB8)

03

6.4 EDID Ver. 1.3 FO

R HDMI (256B

yte)

Only for training and service purposes

- 12-

LGE Internal Use Only

(1) Signal(Video & Sync)

MODE

CLASSIF ICATION

Polar ity

DOT CLOCK [MHz]

Frequency [kHz]/ [Hz]

Total Period (E)

Display (A)

Front Porch (D)

Sync. (C)

Back Porch (B)

Resolution

1

H(Pixels)

-

28.321

31.468

900

720

18

108

54

720 X 400 V(Lines)

+

70.08

449

400

12 2 35

2

H(Pixels)

-

25.175

31.469

800

640

16

96

48

640 x 480 V(Lines)

-

59.94

525

480

10 2 33 3 H(Pixels)

-

31.5

37.5

840

640

16

64

120

640 x 480 V(Lines)

-

75

500

480 1 3

16

4

H(Pixels)

+

40.0

37.879

1056

800

40

128

88

800 x 600 V(Lines)

+

60.317

628

600 1 4

23

5

H(Pixels)

+

49.5

46.875

1056

800

16

80

160

800 x 600 V(Lines)

+

75.0

625

600 1 3

21

6

H(Pixels)

-

65.0

48.363

1344

1024

24

136

160

1024 x 768 V(Lines)

-

60.0

806

768 3 6

29 7 H(Pixels)

+

78.75

60.023

1312

1024

16

96

176

1024 x 768 V(Lines)

+

75.029

800

768 1 3

28

8

H(Pixels)

+

108.0

67.500

1600

1152

64

128

256

1152 x 864 V(Lines)

+

75.000

900

864 1 3

32

9

H(Pixels)

+

108.0

63.981

1688

1280

48

112

248

1280 x 1024 V(Lines)

+

60.02

1066

1024

1 3 38

10

H(Pixels)

+

135.0

79.976

1688

1280

16

144

248

1280 x 1024 V(Lines)

+

75.035

1066

1024

1 3 38

11

H(Pixels)

-

146.25

65.290

2240

1680

104

176

280

1680 x 1050 V(Lines)

+

59.954

1089

1050

3 6 30

12

H(Pixels)

+

148.50

67.50

2200

1920

88

44

148

1920 x 1080 V(Lines)

+

60

1125

1080

4 5 36

Video

Sync

TIMING CHART

C

B

(2) H/V Timing

DE

F

A

Only for training and service purposes

z D-SUB/DVI DTV Mode is not supported (interlace mode)

- 13 -

LGE Internal Use Only

Factory support

mode

(Preset Mode)

Horizontal frequency

(KHz)

Vertical

frequency

(Hz)

HDMI

1

480P

31.5

60

O

2

576P

31.25

50

O

3

720P

37.5

50

O

4

720P

45

60

O

5

1080i

28.12

50

O

6

1080i

33.75

60

O

7

1080P

56.25

50

O

8

1080P

67.5

60

O

(Recommend Mode)

Only for training and service purposes

- 14 -

LGE Internal Use Only

ADJUSTMENT

1. Coverage

Apply to 58.4

Gumi Korea) or made in accordance with the standard of Gumi Factory process.

cm (23 inch)

Wide monitor made in Monitor Factory

2. Appointment

2.1 Adjustment must be done as fixed sequence, and adjustment sequence can be modified after agreement withthe responsible R&D engineer considering mass-production condition.

2.2 Power : AC 100 - 240 Voltage (Free)

2.3

Input signal:

2.3.1 RGB Input: As Product Standard (Signal ROM : LB800K

Ver1.6)

2.3.2 RJ-45 input : As Product Standard (Ethernet connection

through network from Host PC)

* PC spec for MK(Minikey) Loader (TBD): CPU - Dual core 2.0

GHzD, Memory - 2 GByteD *PC spec for Host PC (TBD): CPU - Dual core 2.0 GHzD, Memory - 2 GByteD

2.4 Warm-up Time: Over than 30 minutes

2.5 Adjustment Display adjust equipment, VG-813(or VG819), Oscilloscope, PC (More than 486 program.

equipment : White balance equipment (CA-110),

computer ) & White balance adjust

3. Adjustment

3.1 Overview

Use factory automation equipment and adjust automatic

movement. But, do via passivity adjust in erroroccurrence.

PC audio volume : MAX * LAN cable * Router * PC: vSpace S/W for N+ ( Ver 4.5.xx.xx ) --- Caution: Ver

4.4.xx.xx for N1742L family

3.2.2 Total Assembly Line

· Ready : Heat-run during5 minutes in the state with signal

· Connect input signal to D-sub.

· Default value before adjustment : Contrast “70” , Brightness ‘100(Max)”

3.2.3 Adjustment of Horizontal/Verticality screen position, Clock and Clock Phase at each Mode.

· There is no special factory mode adjustment. Writing initial value of EEPROM in Board Assembly line is adjusting Preset Mode and Reset mode. (EEPROM is initialized when AC Power is ON first.)

· If the change of FOS data is needed after M.P, it is possible by writing Mode Data with EEPROM write command or modifying the Mode Data in MICOM itself.

3.2.4 Color coordinates adjustment and Luminance

adjustment.

3.2.4.1 Color coordinates adjustment

· Monitor Contrast / Brightness

- Contrast : 70

- Brightness : 100(Max)

· CA-110: Set “channel 9”

· Signal Generator : At cut-off and drive --> 16 step pattern for ADC (Program No.: 31)

- Output Voltage : 700 mVp-p

- Output Mode : Mode 12 (SXGA 60 Hz)mode Setting.

3.2 Adjustment order

(refer to the Adjustment standard and adjustment command table)

3.2.1 Board Assembly Line

3.2.1.1 15pin D-sub (RGB)

· Connect input signal to 15pin D-sub.

· Check the firmware version & model name. And write the firmware code to the serial Flash ROM by ISP.

· Ready for adjustment : check whether adjustment command works normally or not and the operating state of each mode.

· Check the display state of gray color when 256 gray scale patterns is embodied.

· Read by EEPROM Read Command to check whether initial value is correct or not.

3.2.1.2 MK( Minikey ) Loading

· Open MK Loader Tool on MK Loader PC.

( * MK Loader PC should be connected Internet)

· Connect input signal to RJ-45 input with LAN cable connected network devices such as routers.

· Turn on the Monitor set.

· Click the box when the °∞empty port °∞box is changed to “write mini-key” in MK Loader Tool.

3.2.1.2 RJ-45 input

· Connect input signal to RJ-45 input with LAN cable connected network devices such as routers.

· Check USB 1.1 Port (Keyboard/ Mouse) : @RJ-45 input

· Check USB 2.0 Port (USB Memory Stick 2port) : @RJ-45 input

· Check Audio (Ear-phone out/ Mic in/ Speaker) : @RJ-45 input,

3.2.4.2.Adjustment : Board Assembly Line

· Select RGB mode 16 step pattern for ADC (Program No.31 (Mode 12,Pattern

· Input

11)). (Video level : 700 mVp-p)

· Adjust by commanding AUTO_COLOR_ADJUST

· Confirm “Success” message in Screen or Check the data of 0xFE, 0xFF address of EEPROM(0XA6) is 0xAA after waiting 5 seconds.

· If there is “FAULT” message or the data of 0xFE, 0XFF address of EEPROM(0xA6) is not 0xAA, do adjust again.

· If all Adjustment is completed, the values of 6500K, User Color and 9300K are saved automatically.

· Select RGB mode

· Input 16 step pattern for ADC (Program No.31 (Mode 12,Pattern

11)). (Video level : 700mVp-p)

· Adjust by commanding AUTO_COLOR_ADJUST

· Confirm “Success” message in Screen or Check the data of 0xFE,0xFF address of EEPROM(0xA6) is 0xAA after waiting 5 seconds.

3.2.4.3. Confirm at Total Assembly Line: adjustment

· Check the data of 0xFE, 0xFF address of EEPROM(0xA6) is 0xAA.

· If the data of 0XFE, FF address of EEPROM(0xA6) is not 0xAA, do adjust again by 3.2.4.2.

- 15 -

LGE Internal Use Only

3.2.4.4. Confirm PRESET 6500K Color coordinates and Adjust PRESET 9300K Color coordinates .

· Set as Aging mode ON, by commanding AGING_ON/OFF command code.

· Select Module that is being used in present production by commanding MODULE SELECT. ( It is not needed so far. However, it will be needed to apply other modules)

· Send SYSTEM RESET command to set Module data.

· Input Full White Pattern (Video level : 700 mVp-p)

· Set as 9300K by commanding COLOR_MODE_CHANGE Command code.

· Check to meet x = 0.283 ± 0.03, y=0.298 ± 0.03, and confirm.

· Only if it does not meet, adjust as below steps.

· Adjust to meet x = 0.283 ± 0.01, y=0.298 ± 0.01 in 5 minutes. and confirm.

· Save 9300K Color by commanding COLOR SAVE Command code.

· Set as 6500K by commanding COLOR_MODE_CHANGE Command code.

· Check to meet x = 0.313 ± 0.03, y=0.329 ± 0.03, and confirm.

· Only if it does not meet, adjust as below steps.

· Adjust to meet x = 0.313 ± 0.01, y =0.329 ± 0.01, and confirm.

· Save 6500K Color by commanding COLOR SAVE Command code.

· Set as sRGB by commanding COLOR_MODE_CHANGE Command code.

· Adjust to meet Y = 150 ± 50, and confirm.

· Save sRGB Color by commanding COLOR SAVE Command code.

3.2.4.5. Confirm User color coordinates .

· Confirm Whether User color is saved same as 6500K.

· After confirming Color coordinates, Must return to 6500K

3.2.5 Confirm Operation state.

3.2.5.1 Operation mode : Confirm whether each appointed mode operate correctly or not.

3.2.5.2 Confirmation of Adjustment condition and operation : Confirm whether it meet Auto/Manual equipment Adjustment standard or not.

· Confirm Analog screen state : Confirm screen state at below mode.

Appointment mode (RGB input):

640*480 @60Hz (Mode 1), 800*600@75Hz(Mode 5), 1024*768@60Hz(Mode 8), 1280*1024@60Hz(Mode 12),

SMPTE pattern(Check 0%,5%,95%,100%)

–Mode can be added.

3.2.5.3. Confirm Auto adjustment operation.

· Input Analog 1 Dot on/off & Rectangle Pattern at Mode 12(1280x1024@60 Hz)

· Confirm adjustment operation by changing Clock, Phase, H/V Position.

· Check Clock, Phase by pressing AUTO Key.

· Confirm first set of new lot by periods

3.2.5.4 Other quality

· Confirm that each items satisfy under standard condition that was written product spec.

· Confirm Applying Module & MICOM Setting --> Confirm with Service OSD

- Confirm at Service OSD by “Menu + Power key” on .(from Power off)

- Confirm first set of new lot by periods, and confirm periodically

when there is Process change or Adjustment setting change.

3.2.5.5. OSD & Adjustment device Confirmation : Confirm operation mentioned as product spec.

· Vary Brightness and Contrast and confirm the variation of Luminance and display status.

· Operate the f-engine function and confirm variation of Luminance.

· Make sure to do FACTORY RESET after confirmation of OSD function.

3.2.5.6. Confirm the display state by inputting 8 color Bar Pattern & 256 Gray Scale pattern.

3.2.5.7. DPM operation confirmation : Check if Power LED Color and Power Consumption operates as standard.

· Measurement Condition : 230 V@ 50 Hz (Analog)

· Confirm DPM operation at the state of screen without Video Signal.

3.2.5.8. RJ-45 input

· Connect input signal to RJ-45 input with LAN cable connected network devices such as routers.

· Check USB 1.1 Port (Keyboard/ Mouse) : @RJ-45 input

· Check USB 2.0 Port (USB Memory Stick 2port) : @RJ-45 input

· Check Audio (Ear-phone out/Mic in/Speaker) : @RJ-45 input, PC audio volume : MAX

* LAN cable * Router * PC: vSpace S/W for N+ ( Ver 4.5.xx.xx ) --- Caution: Ver

4.4.xx.xx for N1742L family

3.2.5.9. DDC EDID Write ( Set as Aging mode ON, by commanding AGING_ON/OFF command code. )

1) SUFFIX: xxxxxPN

· Connect analog Signal Cable to D-sub wafer.

· Write EDID DATA to EEPROM(24C08) by using DDC2AB protocol.

· Check whether written EDID data is correct or not. (refer to Product spec).

--> After writing EDID, send Elapsed Time Clear command. (Elapsed time should not be displayed, after EDID writing) : Confirm periodically (in the first set of new lot, process change)

whether module name and aging time disappeared on the selfdiagnostics OSD with signal cable disconnected.

--> If Elapsed Time Clear command isn°Øt executed, module name, aging time and TCO word appear on the self-diagnostics OSD.(Module name and aging time should not appear after writing EDID)

--> Make sure to do FACTORY RESET at the final process.

3.2.5.10. Shipping condition

· Contrast : 70

· Power Switch : Off

· Brightness : “100(Max)”

· Color Select : Preset ( 6500K )

· Language Select : Refer to product spec.

· OSD Position : Center

· Power indicator : ON

· Flatron f-engine : Normal

- 16 -

LGE Internal Use Only

4.Standard of Auto/Manual equipment adjustment

No. Item Adjustment & measurement

standard

1 Voltage(V) 12 V± 0.6 V

5V± 0.3V / 3.3V± 0.25V

2 Color

coordinates

(9300/6500K)

Color

3

coordinates

(6500K)

Color

coordinates

(9300K)

Luminance 6500K More than

Position

5 Screen

Compensation

6 DPM

Confirmation

(RGB/LAN)

7

8 Withstanding Voltage

9

10 Cutoff /ADC Adjustment Pattern

11 Network Test with PC

Gray scale Confirmation Linear gray Scale MODE 12 Pattern 9 Full screen

confirmation

Ground Confirmation

Black Level

DRIVE1

DRIVE2

H 4 Screen

V

CLOCK

PHASE

AUTO FULL SIZE MODE

Normal Mode 40 W(Typ) Pattern 4 Blue

Stand By Mode 1W/- Pattern 6

Suspend Mode 1W/- Pattern 7 Flicker

DPMS Off 1W/15W Pattern 8 Flicker

Power Switch

Off

2.5V± 0.2V

Auto Adjustment MODE 12 Pattern 0

u uí= 0. 198 ± 0.00 5

v ví=0.468± 0.005

X

Y

220 cd/m2

FULL SIZE MODE

1W

When 1500Vac or 2121Vdc is

impressed between the first of

power (Live/Neutral) and

ground (Earth) for 1 second,

check whether something

wrong happens or not.

When 25A is impressed

between Earth and 2nd Ground

for 1 second, Resistance must

be less than 0.1

1280*1024@60Hz (700mVp-p)

CPU : Dual core 2.0 GHz

Memory : 2 GByte

Teradiciís PCoIP Host Card

LAN cable

0.283± 0.004

0.298± 0.004

FULL SIZE

16 step pattern for ADC

,

Operation

mode

MODE 13 Pattern4

MODE 12 Pattern1

MODE 12

(700 mVp-p)

MODE

1 - 13

12-13

MODE 12

MODE 12 Pattern11

,

1280 * 1024

Operation

Pattern

Pattern1

Pattern4 Full Screen

Pattern 4

Measurement

Position

Each power

of Screen

Full screen

TP of

Center

Flicker

off

*Check items No. 2, 3, 4, 5 and 7 at RGB input.

- 17 -

LGE Internal Use Only

5. Pattern for Adjustment

Pattern 0 : FULL BLACK (State of without video signal ) Pattern 1 : FULL WHITE (Don’t display other Character except for White Pattern) Pattern 3 : FULL WHITE Pattern 4 : Cross hatch pattern (Horizontal 10Line, Vertcial 8Line) & Rectangle Pattern Pattern 5 : 1 Dot on, 1 Dot off & Rectangle Pattern Pattern 6 : Vertical Sync only input (Use signal cable of which Pin #5 is GND) Pattern 7 : Horizontal Sync only input (Use signal cable of which Pin #5 is GND) Pattern 8 : State of without Vertical/Horizontal Sync and Video Signal. (Use signal cable of which Pin #5 is GND) Pattern 9 : 8 Color Bar Pattern + 16 Gray Level Pattern Pattern 10 : SMPTE Pattern Pattern 11 : 16 Gray Step Pattern (700mV)

- 18 -

LGE Internal Use Only

BLOCK DIAGRAM (Main)

- 19 -

LGE Internal Use Only

TROUBLESHOOTING GUIDE

1. NO POWER

Replace Adapter

OK ?

Check Power connector

NY

Y

Check JK100

Voltage Level (19.5V)

Replace IC102 &

N

Check IC102 Output

Recheck

Y

Voltage Level (5V)

Replace IC103 &

N

Check IC103 Output

Recheck

Replace X100

N

Y

14.3181MHz

Check X100 Clock

Voltage Level (1.2V, 3.3V)

Replace IC101 Flash Memory

- 20 -

LGE Internal Use Only

2. NO SCREEN ON

Check IC100

Replace Main Scaler IC

Replace IC102 &

N

Check Panel Power 5V(P101)

Recheck

Y

Check IC102 Output 5V

Check IC100

Repair Main B/D

N

Check Panel Clock

P101(#10,11,22,23)

Replace Cable

N

Y

Open Conductors

Check FFC Cable for Damage or

Replace T-Con Board or Module

(P102 1,6)

Check LED Driver FB

NN

Y

Module Back Light On?

- 21 -

LGE Internal Use Only

3. NO VIDEO_D-SUB

Replace Connector

Re Download EDID Data

resolution

Is it supported?

Check signal format and

N

Y

Damage or Open

Check Dsub Cable for

Y

Connector

(Pin No. 12,15)

connection or Damage

Check JK202 for proper

Check I2C Signal(JK202)

Y

(IC100)

Replace Main Scaler

- 22 -

LGE Internal Use Only

4. NO VIDEO_DVI

Replace Connector

Re Download EDID Data

resolution

Is it supported?

Check signal format and

N

Y

Damage or Open

Check Dsub Cable for

Y

Connector

(Pin No. 12,15)

connection or Damage

Check JK202 for proper

Check I2C Signal(JK202)

Y

(IC100)

Replace Main Scaler

- 22 -

LGE Internal Use Only

220

400

910

900

500

550

930

920

540

or

EXPLODED VIEW

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

IMPORTANT SAFETY NOTICE

210

300

310

LG 24MP58D Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual