LG L1530TM Schematic

COLOR MONIT OR

SER VICE MANUAL

Website:http://biz.LGservice.com

E-mail:http://www.LGEservice.com/techsup.html

CAUTION

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

CHASSIS NO. : CL-61

MODEL: L1530TM (L1530TMM-AD**R)

( ) **Same model for Service

- 1 -

1. LCD CHARACTERISTICS

Type : TFT XGA LCD Module Pixel Pitch : 0.297mm x 0.297mm Color Depth :

6bits(with 2bit FRC)/ 16M colors

Active Video Area : 15.0inch

(304.128 x 228.096) Surface Treatment : Anti-Glare Backlight Unit : 4CCFL Opraating Mode : Normally white Electrical Interface : LVDS interface

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio

≥

10 Left : 80° min. 80° typ. Right: 80° min. 80° typ. Top : 80° min. 80° typ. Bottom: 80° min. 80° typ.

2-2. Luminance

200(min.), 250(typ.) at Center point

2-3. Contrast Ratio : 300(min.), 400(typ.)

3. SIGNAL (Refer to the Timing Chart)

3-1. Sync Signal

1) Type : Separate Sync. (Horizontal & Vertical),

SOG(Sync On Green), Digital, Composite

2) Input Voltage Level: Low=0~0.8V, High=2.1~5.5V

3) Sync Polarity : Positive or Negative

3-2. Video Input Signal

1) Type : R, G, B Analog

2) Voltage Level : 0~0.7 V

3) Input Impedance : 75 Ω

3-3. Operating Frequency

Horizontal : 30 ~ 63kHz Vertical : 56 ~ 75Hz

4. POWER SUPPLY

4-1. Power

100-240V~, 50/60Hz

DC 12V 3A

4-2. Power Consumption

5. ENVIRONMENT

5-1. Operating Temperature: 10°C~35°C (50°F~95°F) 5-2. Operating Humidity : 10%~80% 5-3. MTBF : 50,000 HRS (Min.)

Lamp Life : 40,000 Hours (Min.)

6. DIMENSIONS (with TILT/SWIVEL)

Width : 385.5mm (15.18'') Depth : 211.1mm (8.31'') Height : 354.5mm (13.96'')

7. WEIGHT (with TILT/SWIVEL)

Net. Weight : 5.85kg (12.90 lbs) Gross Weight : 8.65kg (19.07 lbs)

CONTENTS

SPECIFICATIONS

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SPECIFICATIONS ..................................................... 2

PRECAUTIONS ......................................................... 3

TIMING CHART ......................................................... 4

OPERATING INSTRUCTIONS .................................. 5

WIRING DIAGRAM .................................................... 6

BLOCK DIAGRAM ..................................................... 7

DESCRIPTION OF BLOCK DIAGRAM ..................... 8

BLOCK DIAGRAM(MODULE) ................................... 9

DESCRIPTION OF BLOCK DIAGRAM(MODULE)

..... 10

ADJUSTMENT ......................................................... 11

TROUBLESHOOTING GUIDE ................................ 13

EXPLODED VIEW.....................................................19

REPLACEMENT PARTS LIST .................................21

SCHEMATIC DIAGRAM........................................... 24

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

DPM OFF

POWER S/W OFF

H/V SYNC

ON/ON OFF/ON ON/OFF

OFF

POWER CONSUMPTION

less than 35 W

less than 3 W

less than 3 W less than 3 W less than 3 W

LED COLOR

GREEN AMBER AMBER AMBER

OFF

VIDEO

ACTIVE

OFF OFF OFF

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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 replacement parts list. 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).

• 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.)

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter 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.

PRECAUTION

CAUTION

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

TIMING CHART

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VIDEO

SYNC

H / V

H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines)

Sync

Polarity

– –

– – – – – – – –

+ + + + + + + +

– – – – – –

+ +

Dot

Clock

25.175

28.322

25.175

30.24

31.5

36.0

40.0

50.0

49.5

57.2832

78.75

Frequency

31.468 KHz

70.0 Hz

31.468 KHz

70.0 Hz

31.469 KHz

60.0 Hz

35.00 KHz

66.67 Hz

37.861 KHz

72.8 Hz

37.50 KHz

75.0 Hz

35.156KHz

56.25 Hz

37.879 KHz

60.3 Hz

48.077 KHz

72.188 Hz

46.875 KHz

75.0 Hz

49.725 KHz

74.55 Hz

48.363 KHz

60.0 Hz

56.476 KHz

70.0 Hz

60.023 KHz

75.0 Hz

Resolution

640 x 350

720 x 400

640 x 480

800 x 600

832 x 624

1024 x 768

Total

Period

( E )

800 449 900 449 800 525 864 525 832 520 840 500

1024

625

1056

628

1040

666

1056

625

1152

667

1344

806

1328

806

1312

800

Video

Active

Time ( A )

640 350 720 400 640 480 640 480 640 480 640 480 800 600 800 600 800 600 800 600 832 624

1024

768

1024

768

1024

768

Blanking

Time

( B )

160

180

160

224

192

200

224

256

240

256

320

304

288

Sync

Duration

( D )

108

128

120

136

Back

Porch

( F )

48 60 55 34 48 33 96 39

128

120

128

22 88 23 64 23

160

224

160

144

176

Front

Porch

( C )

16 37 17 13 16 10 64

1 56 37 16

1 32

1 24

3 24

3 16

MODE

(MAC)

(TEXT)

OPERATING INSTRUCTIONS

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REAR VIEW

Screen at the front side of the monitor

D-Sub

DVI

Power

Cord

USB

FRONT VIEW

Front Control Panel

Screen at the front side of the monitor Buttons at the rear side of the monitor

A green LED will be displayed in a normal operation mode, or an orange LED will be displayed in a power saving mode.

Press the POWER button to turn the power on. Press the button again

Shows or hides the OSD (On Screen Display) menu. Lock/Unlock OSD – Locks or unlocks the OSD adjustment function.

To lock the OSD menu, press the MENU button for 5 seconds. The “OSD Locked” message will be displayed and the screen will be locked. To release OSD menu locking, press the MENU button for 5 seconds again. The “OSD Unlocked” message will appear and the OSD menu will be unlocked.

OSD Locked OSD Unlocked

MENU/EXIT button

Power LED

Power button

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WIRING DIAGRAM

Use this button to select the icon or make an adjustment in the OSD (On Screen Display) menu.

When two computers are connected, use this button to select the input signal for the destination computer. If only one computer is connected, it will be recognized automatically.

Use this button to select the optimized image conditions, depending on the surrounding environment (brightness, type of the image).

Select the icon to adjust in the OSD screen. *Automatic screen adjustment function - The screen will be automatically adjusted

when you press the AUTO/SET button.

> <

button

AUTO/SET button

Lightview <

button

SOURCE >

button

Connector Ass’y : P/N: 6631T12001T

Connector Ass’y : P/N: 6631T20015R

Connector Ass’y : P/N: 6631T12005A

Connector Ass’y : P/N: 6631T11012R

LIGHT VIEW

DAY TEXT

1 2

SET

- 7 -

Panel

BLOCK DIAGRAM(MAIN)

LVDS

USB-B

3.3 V DimAdj

InvOn

USB-A

Inverter

Tablet

Control

Signal

EEPROM

(System)

Scaling

MST9031B

LVDS

Transmitter

ADC

3.3 V

OSD

PLL

2.5 V

MTV312

3.3 V

BRT-CTL

Regulator

INV-CTL

DC-DC

Converter

2.5 V

Analog(R/G/B)

D-Sub

DVI-D

To Key Control

Digital(R/G/B)

12V 3A

Adapter

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DESCRIPTION OF BLOCK DIAGRAM

1. Input signal switching part

There are two inputs which are analog and digital input. They come from each 15 pin D-sub and 24 pin DVI-D connector.

2. Video Controller part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock.

3. Display Data Transmitter Part.

This part transmit digital signal from the Scaler to the reciever of module.

4. Power Part.

This part consist of the one 5V, two 3.3V and one 2.5 regulators to convert power which is provided 12V in Adapter.

3.3V is provided for LCD panel and inverter,5V is provided for Micom. Also,5V is converted 3.3V and 2.5V by regulator. Converted power is provided for IC in the main board.

5. MICOM Part.

This part consists of EEPROM IC which stores control data,Reset IC and the Micom. The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable. The controlled data of each modes is stored in EEPROM.

6. Inverter

The inverter converts from DC 12V to AC 700V and operate back-light lamp of module.

7.Tablet control Signal part. This part transmits Signals(+5V,Data+,Data- and GND ) which comes in toward the computer to the Antenna Control Board.

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BLOCK DIAGRAM(MODULE)

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