Lg 32ld400_lc320wug-scr7 User manual

MODEL :32LD400_LC320WUG-SCR7

42LD400_LC420WUG-SCR7

P/NO：SG-0361 (REV00) Printed in Taiwan

32LD400、42LD400 Service Manual

Table of Contents

CONTENTS PAGE

Sections

1. Features 1-1

2. Specifications 2-1

3. On Screen Display 3-1

4. Factory Preset Timings 4-1

5. Pin Assignment 5-1

6. Main Board I/O Connections 6-1

7. Theory of Circuit Operation 7-1

8. Waveforms 8-1

9. Trouble Shooting 9-1

10. Block Diagram 10-1

11. Spare parts list 11-1

12. Complete Parts List (32LD400) 12-1

12. Complete Parts List (42LD400) 12-2

13. EDID List (32LD400，42LD400) 13-1

Appendix

1. Main Board Circuit Diagram

2. Main Board PCB Layout

3. Assembly Explosion Drawing

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Chapter 1 Features

1. Built in TV channel selector for TV viewing

2. Simultaneous display of PC and TV images

3. Connectable to PC’s analog RGB port

4. Built in HDTV, composite video, HDMI ,ATV out and DTV out ,Audio line

out, Audio optical out

5. Built in auto adjust function for automatic adjustment of screen display

6. Smoothing function enables display of smooth texts and graphics even if

image with resolution lower than 1920x1080 is magnified

7. Power saving to reduce consumption power too less than 1W

8. On Screen Display: user can define display mode (i.e. color, brightness,

contrast, sharpness, backlight), sound setting, TV channel program,

aspect and gamma or reset all setting.

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Chapter 2 Specification

1. TFT LCD CHARACTERISTICS

LC320WUG-SCR7-8R2

Item Specification

Active Screen Size 31.55 inch (801.31mm) diagonal

Outline Dimension 760.0(H) x 450.0 (V) x 32.5 mm(D)

Pixel Pitch 0.36375 mm x 0.36375 mm

Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement

Color Depth 8-bit, 16.7 M colors(※1.06B colors@10bit(D)System Output)

Luminance, White 500 cd/m2 (Center 1point,Typ.)

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

Power Consumption Total 111.08 W (Typ.) (Logic=6.08 W with T-CON,

Backlight=105W @ with Inverter )

Weight 5.0Kg (Typ.)

Display Mode Transmissive mode, Normally black

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

(Haze 10%)

LC420WUG-SCR7-7R2

Item Specification

Active Screen Size 42.02 inch (1067.31mm) diagonal

Outline Dimension 983.0(H) x 576.0 (V) x 35.5 mm(D)

Pixel Pitch 0.4845 mm x 0.4845 mm

Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement

Color Depth 8-bit, 16.7 M colors(※1.06B colors@10bit(D)System Output)

Luminance, White 500 cd/m2 (Center 1point,Typ.)

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

Power Consumption Total 156.8 W (Typ.) (Logic=7.8 W with T-CON,

Backlight=149W @ with Inverter l out duty 100%)

Weight 8.7Kg (Typ.)

Display Mode Transmissive mode, Normally black

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

(Haze 10%)

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2. Input Connectors

USBX1, HDMIX2, D-SUB15PIN (MINI, 3rows), RCAX3 (Component), RCAX2

(Audio IN), RCAX2 (Audio IN), RCAX1 (Composite), Tuner

3. Output Connectors

SPDIF Out (Optical Audio), RCA X1(Audio OUT)

4. Power Supply

32LD400

a. Input voltage: 100-240Vac, 50/60Hz

b. Input current: 1.5 A (Max)

c. Power consumption (w/set): 140W (Max) / 100W±10% (AVG)

d. Standby/ DPMS (w/set): <1W (Max) at 120 Vac

42LD400

a. Input voltage: 100-240Vac, 50/60Hz

b. Input current: 2.5 A (Max)

c. Power consumption (w/set): 230W (Max) / 120W±10% (AVG)

d. Standby/ DPMS (w/set): <1W (Max) at 120 Vac

5. Speaker

Output 6Ω/10W (max) X2

6. Environment

Operating Temperature: 0℃~ 35℃(Ambient)

Operating Humidity: 10%~90% (No-condensation)

Operating Altitude: 0~14,000 feet (Non-Operating)

7. Dimensions (Physical dimension) (Unit: mm)

32LD400

Display Module Display Module + Base

a. Height 505.7 563.3

b. Width 790.8 790.8

c. Depth 83.1 209.8

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42LD400

With Stand Without stand

a. Height 691.4 632

b. Width 1018.5 1018.5

c. Depth 245.8 92.1

8. Weight (Physical weight)

32LD400

a. Net: 8.0 ±1.0 kg (without Base)

9.5 ±1.0 kg (with Base)

b. Gross: 11.8 ±1.0 kg

42LD400

a. Net: 13.5 ±1.0 kg (without Base)

15.6 ±1.0 kg (with Base)

b. Gross: 19.6 ±1.0 kg

9. Precautions

Please pay attention to the followings when you use this TFT LCD module.

9-1. Mounting Precautions

(1) You must mount a module using holes arranged in four sides.

(2) You should consider the mounting structure so that uneven force (ex.

Twisted stress) is not applied to the module. And the case on which a

module is mounted should have sufficient strength so that external

force is not transmitted directly to the module.

(3) Please attach the surface transparent protective plate to the surface in

order to protect the polarizer. Transparent protective plate should

have sufficient strength in order to the resist external force.

(4) You should adopt radiation structure to satisfy the temperature

specification.

(5) Acetic acid type and chlorine type materials for the cover case are not

desirable because the former generates corrosive gas of attacking the

polarizer at high temperature and the latter causes circuit break by

electro-chemical reaction.

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(6) Do not touch, push or rub the exposed polarizers with glass, tweezers

or anything harder than HB pencil lead. And please do not rub with

dust clothes with chemical treatment. Do not touch the surface of

polarizer for bare hand or greasy cloth.(Some cosmetics are

detrimental to the polarizer.)

(7) When the surface becomes dusty, please wipe gently with absorbent

cotton or other soft materials like chamois soaks with petroleum

benzine. Normal-hexane is recommended for cleaning the adhesives

used to attach front / rear polarizers. Do not use acetone, toluene and

alcohol because they cause chemical damage to the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time

contact with polarizer causes deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient

strength.

9-2. Operating Precautions

(1) The spike noise causes the mis-operation of circuits. It should be

lower than following voltage:

V=±200mV (Over and under shoot voltage)

(2) Response time depends on the temperature.(In lower temperature, it

becomes longer.)

(3) Brightness depends on the temperature. (In lower temperature, it

becomes lower.) And in lower temperature, response time(required

time that brightness is stable after turned on) becomes longer.

(4) Be careful for condensation at sudden temperature change.

Condensation makes damage to polarizer or electrical contacted parts.

And after fading condensation, smearor spot will occur.

(5) When fixed patterns are displayed for a long time, remnant image is

likely to occur.

(6) Module has high frequency circuits. Sufficient suppression to the

electromagnetic interference shall be done by system manufacturers.

Grounding and shielding methods may be important to minimized the

interference.

(7) Please do not give any mechanical and/or acoustical impact to LCM.

Otherwise, LCM can’t be operated its full characteristics perfectly.

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(8) A screw which is fastened up the steels should be a machine screw. (if

not, it causes metallic foreign material and deal LCM afatal blow)

(9) Please do not set LCD on its edge.

9-3. Electrostatic Discharge Control

Since a module is composed of electronic circuits, it is not strong to

electrostatic discharge. Make certain that treatment persons are

connected to ground through wrist band etc. And don’t touch interface pin

directly.

9-4. Precautions for Strong Light Exposure

Strong light exposure causes degradation of polarizer and color filter.

9-5. Storage

When storing modules as spares for a long time, the following precautions

are necessary.

(1) Store them in a dark place. Do not expose the module to sunlight or

fluorescent light. Keep the temperature between 5°C and 35°C at

normal humidity.

(2) The polarizer surface should not come in contact with any other object.

It is recommended that they be stored in the container in which they

were shipped.

9-6. Handling Precautions for Protection Film

(1) The protection film is attached to the bezel with a small masking tape.

When the protection film is peeled off, static electricity is generated

between the film and polarizer. This should be peeled off slowly and

carefully by people who are electrically grounded and with well ion-

blown equipment or in such a condition, etc.

(2) When the module with protection film attached is stored for a long time,

sometimes there remains a very small amount of glue still on the bezel

after the protection film is peeled off.

(3) You can remove the glue easily. When the glue remains on thebezel

surface or its vestige is recognized, please wipe them off with

absorbent cotton waste or other soft material like chamois soaked with

normal- hexane.

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Chapter 3 On Screen Display

On Screen Display (OSD) is a friendly interface providing the function adjusting in our system.

Customers could operate it only by few buttons. There is the introduction of the OSD.

<Side>

A. LED indicator display on the front

LED indicator Status Remark

Off AC power off by disconnecting the power cord

Green Power on

Becoming dimmer after lighting up a

few seconds

Red Standby/Power Off Becoming dimmer after lighting up a

few seconds

B. Specification and explanation of user control panel on the side

Buttons 1 2 3 4 5 6 7

Name

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i. Standby/power on

After AC on, by pressing button, LED indicator turns to white to indicate

power on. press 2 sec to turn off this device, press this button again.

ii. Menu operation

Press button to activate the quick menu. Press the button again to

activate function. Turn Left or Right button to select function

On Screen Display

Operation:

Main unit button (1)

(2)

(3)

(4)

(5)

(6)

(7)

LGE 2008 UI Adjustment

Main Menu

Channel

Picture

Audio

Time

Option

Lock

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Input

My Media

Channel

A. Auto Tuning

B. Manual Tuning

a. Type: TV, CATV, DTV, CADTV

b. Channel

c. Add / Delete

d. Close

C. Channel Edit

a. Type: TV, CATV, DTV, CADTV

b. Channel Select

c. Add / Delete / Remove Favorite

Picture

A. Aspect Ratio (Set by Program, 4:3, 16:9, Zoom,

Cinema Zoom, Just Scan)

Source TV/AV/Comp/HDMI RGB

Resolution 480i/p 720p,

1080i/p 480i/p 720p,

1080i/p

Set by

Program Yes Yes N/A N/A

4:3 Yes Yes Yes Yes

16:9 Yes Yes Yes Yes

Zoom Yes Yes N/A N/A

Cinema Zoom Yes Yes N/A N/A

Just Scan N/A Yes N/A N/A

B. Energy Saving (Auto, Off, Minimum, Medium,

Maximum, Screen Off)

C. Picture Mode (Vivid, Standard, Cinema, Sport,

Game)

a. Backlight (0 ~ 100)

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b. Contrast (0 ~ 100)

c. Brightness (0 ~ 100)

d. Sharpness (0 ~ 100)

e. Color (0 ~ 100)

f. Tint (R50 ~ G50)

g. Advanced Control

g-1. Color Temperature (Cool, Medium, Warm)

g-2. Fresh Contrast (Off, Low, Medium, High)

g-3. Fresh Color (Off, Low, High)

g-4. Noise Reduction (Off, Low, Medium, High)

g-5. Gamma (Low, Medium, High)

g-6. Black Level (Low, High)

g-7. Eye Care (Off, On)

g-8. Real Cinema (Off, On)

h. Reset

D. Screen (RGB-PC)

a. Resolution (1024X768, 1280X768, 1360X768)

b. Auto Config.

c. Position (H Position, V Position)

d. Size (-30 ~ 30)

e. Phase (-32 ~ 31)

f. Reset

Audio

A. Balance (L50 ~ R50)

B. Sound Mode (Standard, Music, Cinema, Sport,

Game)

a. Treble (0 ~ 100)

b. Bass (0 ~ 100)

c. Reset

C. TV Speaker (On, Off)

D. Digital Audio Out (Off, Dolby Digital, PCM)

E. Analog Audio Out (Fixed, Variable)

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Time

A. Clock (Auto, Manual)

a. Year (2000 ~ 2035)

b. Month (1 ~ 12)

c. Date (1 ~ 31)

d. Hour (12AM ~ 11PM)

e. Minute (0 ~ 59)

f. Time Zone (Eastern, Central, Mountain, Pacific,

Alaska, Hawaii)

g. Daylight Saving (Auto, On, Off)

B. Off Time

a. Repeat (Off, Once, Everyday, Mon~Fri,

Mon~Sat, Weekend, Sunday, )

b. Hour (12AM ~ 11PM)

c. Minute (0 ~ 59)

C. On Time

a. Repeat (Off, Once, Everyday, Mon~Fri,

Mon~Sat, Weekend, Sunday)

b. Hour (12AM ~ 11PM)

c. Minute (0 ~ 59)

d. Input (TV, AV, Component, RGB-PC, HDMI1,

HDMI2, HDMI3 (42LD500 only))

e. Channel

f. Volume (0 ~ 100)

D. Sleep Timer (Off, 10 min, 20 min, 30 min, 60 min,

90 min, 120 min, 180 min, 240 min)

E. Auto Sleep (Off, On)

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Option

A. Language

a. Menu (English, Spanish, French)

b. Audio (English, Spanish, French)

B. Input Label

a. AV (VCR, DVD, Set Top Box, Satellite, Cable

Box, Game, PC, HD-DVD, Blu-Ray)

b. Component (VCR, DVD, Set Top Box, Satellite,