LG LM-230WU3-STC2 Service manual

( ) Preliminary Specification

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(● ) Final Specification

LM230WU3

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

BUYER

MODEL

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APPROVED BY

/

/

APPLE

SIGNATURE

DATE

23.0” WUXGA TFT LCDTitle

LG.Philips LCD Co., Ltd.SUPPLIER

LM230WU3*MODEL

STC2SUFFIX

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

S.G Hong / G.Manager

REVIEWED BY

K.G Park / Manager

SIGNATURE

DATE

/

Please return 1 copy for your confirmation with

your signature and comments.

Ver. 2.0 Sep. 21 . 2005

PREPARED BY

J.H Kim / Engineer

MNT Products Engineering Dept.

LG. Philips LCD Co., Ltd

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Product Specification

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Contents

LM230WU3

Liquid Crystal Display

PageITEMNo

COVER

CONTENTS

RECORD OF REVISIONS

GENERAL DESCRIPTION1

ABSOLUTE MAXIMUM RATINGS2

ELECTRICAL SPECIFICATIONS3

ELECTRICAL CHARACTREISTICS3-1

INTERFACE CONNECTIONS3-2

SIGNAL TIMING SPECIFICATIONS3-3

SIGNAL TIMING WAVEFORMS3-4

COLOR INPUT DATA REFERNECE3-5

POWER SEQUENCE3-6

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OPTICAL SFECIFICATIONS4

MECHANICAL CHARACTERISTICS5

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1

2

3

4

5

6

6

8

10

12

13

14

16

21

RELIABLITY6

INTERNATIONAL STANDARDS7

SAFETY7-1

EMC7-2

PACKING8

DESIGNATION OF LOT MARK8-1

PACKING FORM8-2

PRECAUTIONS9

Ver. 2.0 Sep. 21 . 2005

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25

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RECORD OF REVISIONS

LM230WU3

Liquid Crystal Display

Revision

No

DescriptionPageRevision Date

First Draft(Preliminary)-May. 02. 20050.0

Updated the LCM Drawing22, 23May. 04. 20050.1

Updated the Table2-1, Table2-2, Table96, 7, 16Jul. 11. 20050.2

Updated the Table7, Updated the Safety14, 25Jul. 28. 20051.0

Changed the Suffix name (STC1 Æ STC2)-Sep. 21. 20052.0

Changed the Table 3 (Deleted HDCP Function)8

Changed the Table 9 (Contrast Ratio : 800 Æ 700)16

Updated the LCM Drawing (Changed the suffix name)23

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LM230WU3

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Liquid Crystal Display

Product Specification

1. General Description

The LM230WU3 LCD is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) back light system. The matrix employs a-Si Thin Film Transistor as the active element. It is a
transmissive type display operating in the normally black mode. This TFT-LCD has a 23.0 inch diagonally
measured active display area with WUXGA resolution(1200 vertical by 1920 horizontal pixel array). Each pixel
is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or
the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting
a palette of more than 16,777,216 colors.
The LM230W02 has been designed to apply the TMDS

TM

(Transition Minimized Differential Signaling) interface.

TMDS

4pair

CN1

(30pin)

+18.0V

+18.0V

PWR CTRL

+24.0V

GND

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CN2

(14Pin)

General Features

TMDS

Rx

R/G/B

Timing

Controller

Power Circuit

Block

Inverter

Block

23.0 inches(58.4cm) diagonalActive Screen Size

Gate Driver Circuit

2pin x 6CNs (High)

2pin x 1CN (Low)

Source Driver Circuit

S1 S1920

G1

TFT - LCD Panel

(1920 × RGB × 1200 pixels)

G1200

Back light Assembly

(Direct Light Type_12CCFL)

523.4(H) x 335.6(V) x 36.9(D) mm(Typ.)Outline Dimension

0.258 mm x 0.258 mmPixel Pitch

1920 horiz. By 1200 vert. Pixels RGB stripes arrangementPixel Format

8-bit, 16,777,216 colorsColor Depth

2

400 cd/m

View Angle Free (R/L 178(Typ.), U/D 178(Typ.))Viewing Angle(CR>10)

Total 61.1 Watt (Typ.) (8.1 Watt

2,790g(typ.)Weight

Transmissive mode, normally blackDisplay Operating Mode

Hard coating(3H), Anti-glare treatment of the front polarizerSurface Treatment

Ver. 2.0 Sep. 21 . 2005

(5 points Avg.)Luminance, White

@VLCD, 53 Watt @400cd)Power Consumption

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LM230WU3

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Liquid Crystal Display

Product Specification

2. Absolute Maximum Ratings

The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter Notes

Power Input Voltage

Operating Temperature

Storage Temperature

Operating Ambient Humidity

Storage Humidity

Note : 1. Temperature and relative humidity range are shown in the figure below.

Wet bulb temperature should be 39 °C Max, and no condensation of water.

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Wet Bulb
Temperature [C]

10

0

Symbol

50

40

30

20

Values

MaxMin

500TOP

60-20TST

90%

60

60%

40%

Humidity [(%)RH]

10%

Units

Vdc21-0.3VLCD

°C

°C

%RH9010HOP

%RH9010HST

at 25 ± 2°C

1

Storage

Operation

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [C]

Ver. 2.0 Sep. 21 . 2005

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LM230WU3

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Liquid Crystal Display

Product Specification

3. Electrical Specifications

3-1. Electrical Characteristics

It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.

Table 2-1. ELECTRICAL CHARACTERISTICS

Parameter Symbol

MODULE :

ILCDPower Supply Input Current

Note :

1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and f

2. The current is specified at the maximum current pattern.

3. The duration of rush current is about 2ms and rising time of power Input is 1ms(min.).

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White : 255Gray
Black : 0Gray

is the frame frequency.

V

Values

MaxTypMin

=18.0V, 25 ± 2°C,fV=60Hz condition

LCD

Maximum current pattern

Vdc19.018.017.0VLCDPower Supply Input Voltage

mVp-p400VdRFPermissive Power Input Ripple

NotesUnit

1mA520450-

2mA675585-

1Watt9.48.1-PLCDPower Consumption

3A3.0--IRUSHRush current

Mosaic Pattern(8 x 6)

Ver. 2.0 Sep. 21 . 2005

White Pattern

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Product Specification

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Table 2-2. INVERTER ELECTRICAL CHARACTERISTICS

ConditionSymbolParameter

Inverter :

Values

LM230WU3

Liquid Crystal Display

Unit

Max.Typ.Min.

Notes

Input Voltage

Input Current

LAMP :

Notes :

1. The input voltage ripple is limited below 400mVp-p.

2.The specified current and power consumption are under the typical supply Input voltage, 24V.

3.The life is determined as the time at which luminance of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 ± 2°C.

4. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately
30min in a dark environment at 25 °C± 2°C.

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ON/OFFB/L on/off control

DDB

DDB

BRBrightness Adj

BR

BR

= 3.3VI

= 3.3VPBInput Power

V26.424.021.6V

A2.552.21.85V

Watt585348V

V5.0-2.0Lamp ON = HighV

V0.8-0.0Lamp OFF =Low

V3.3-0V

1

2

2

3Hrs50,000Life time

Ver. 2.0 Sep. 21 . 2005

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LM230WU3

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Liquid Crystal Display

Product Specification

3-2. Interface Connections

This LCD employs Two interface connections, a 30 pin connector is used for the module electronics and a
14Pin Connector is used for the integral backlight system.

3-2-1. LCD Module

- LCD Connector(CN1) : IS100-L30B-C23 (UJU), FI-XB30SSL-HF15 (JAE) or Equivalent

- Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent

Table 3 MODULE CONNECTOR(CN1) PIN CONFIGURATION

SymbolNo

GND1

SHLD22

RX2+3

RX2-4

SHLD15

RX1+6

RX1-7

SHLD08

RX0+9

RX0-10

SHLDC11

RXC+12

RXC-13

GND14

Ground

Shield for TMDS channel 2

TMDS Differential Output(+) (CH 2)

TMDS Differential Output(-) (CH 2)

Shield for TMDS channel 1

TMDS Differential Output(+) (CH 1)

TMDS Differential Output(-) (CH 1)

Shield for TMDS channel 0

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TMDS Differential Output(+) (CH 0)

TMDS Differential Output(-) (CH 0)

Shield for TMDS channel C

TMDS Differential Output(+) (CH C)

TMDS Differential Output(-) (CH C)

Ground

Description

No

16

17

18

19

20

21

22

23

24

25

26

27

28

29

Symbol

OPEN

OPEN

OPEN

GND

GND

GND

V

LCD

V

LCD

V

LCD

PWR_ON

HS_OUT

VS_OUT

GND

OPEN

Symbol

NC

NC

NC

Ground

Ground

Ground

Supply voltage for LCD

Supply voltage for LCD

Supply voltage for LCD

Power ON control signal input

3.3V(H:90%,L:10%)

Hsync Output

Vsync Output

Ground

DDC –Clk(HDCP) for future use

OPEN15

HDCP VCC (3.3V) for future use

30

OPEN

DDC –Data(HDCP) for future use

Notes: 1. All GND(ground) pins should be connected together and should also be connected to the LCD’s

metal frame.

2. All V

(power input) pins should be connected together.

LCD

3. Input Level of TMDS signal is based on the Digital Visual Interface (DVI 1.0) Standard.

Rear view of LCM

1

Ver. 2.0 Sep. 21 . 2005

30

IS100-L30B-C23(UJU)

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Liquid Crystal Display

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Product Specification

3-2-2. Backlight Interface

- Inverter Connector : S14B-PHA-SM3 Side entry type (Manufactured by JST) or Equivalent

- Mating Connector : PHR-14(Manufactured by JST) or Equivalent

Table 4. INVERTER CONNECTOR PIN CONFIGULATION

LM230WU3

RemarksDescriptionSymbolPin No

BL1

BL2

BL3

BL4

BL5

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ON12

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BR13

Notes : 1. GND is connected to the LCD’s metal frame.

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

Power Supply +24.0VV

Power GroundGND6

Power GroundGND7

Power GroundGND9

Power GroundGND10

NCOPEN11

Backlight On/off SignalV

Lamp Operating StatusStatus14

Note 1Power GroundGND8

(On :2.0V~5V/Off :0.0~0.8V)

(Max :3.3V / Min :0.0V)Brightness Adjustable VoltageV
Normal=0~0.8V
Abnormal=3.0~5.0V

Rear view of LCM

PCB

14

…

1

S14B-PHA-SM3-TB

(JST : Japan Solderless Terminal Co.,Ltd.)

Ver. 2.0 Sep. 21 . 2005

…

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