LG 32LD400_LC320WUG-SCR7, 42LD400_LC420WUG-SCR7 Service 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,

Cable Box, Game, PC, HD-DVD, Blu-Ray)
c. RGB-PC (VCR, DVD, Set Top Box, Satellite,

Cable Box, Game, PC, HD-DVD, Blu-Ray)
d. HDMI1 (VCR, DVD, Set Top Box, Satellite,

Cable Box, Game, PC, HD-DVD, Blu-Ray)
e. HDMI2 (VCR, DVD, Set Top Box, Satellite,

Cable Box, Game, PC, HD-DVD, Blu-Ray)
f. HDMI3 (VCR, DVD, Set Top Box, Satellite,

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

(47LD500 only)

C. Key Lock (Off, On)
D. Caption (Off, On)

a. Mode (CC1 ~ Text4, Service1 ~ Service6)

b. Digital Option (Set by Program, Custom)

b-1. Size (Small, Standard, Large)
b-2. Font (Font1 ~ Font8)
b-3. Text Color (White, Black, Red, Green, Blue,

Yellow, Magenta, Cyan)

b-4. Text Opacity (Solid, Flash, Translucent,

Transparent)

b-5. Bg Color (White, Black, Red, Green, Blue,

Yellow, Magenta, Cyan)

b-6. Bg Opacity (Solid, Flash, Translucent,

Transparent)

b-7. Edge Type (None, Uniform, Raised,

Depressed, Left Shadow, Right Shadow)

b-8. Edge Color (White, Black, Red, Green,

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Blue, Yellow, Magenta, Cyan)

E. Initial Setting (In Store, Home)

Lock

A. Lock System (Off, On) (default password: 0000)
B. Set Password

a. New

b. Confirm

C. Block Channel

a. Type: TV, CATV, DTV, CADTV

b. Channel Select
c. Block, Un-block

D. Movie Rating (Off, X, NC-17, R, PG-13, PG, G)
E. TV Rating-Children

a. Age (Off, TV-Y7, TV-Y)
b. Fantasy Violence (Off, TV-Y7)

F. TV Rating-General

a. Age (Off, TV-MA, TV -14, TV-PG, TV-G)
b. Dialogue (Off, TV-Y7)
c. Language (Off, TV -MA, TV-14, TV-PG)
d. Sex (Off, TV-MA, TV -14, TV-PG)

e. Violence (Off, TV-MA, TV-14, TV-PG)
G. Downloadable Rating
H. Input Block

a. AV (Off, On)

b. Component (Off, On)

c. RGB-PC (Off, On)

d. HDMI1 (Off, On)

e. HDMI2 (Off, On)

f. HDMI3 (Off, On) (47LD500 only)

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Input

TV
AV
Component
RGB-PC
HDMI-1
HDMI-2
HDMI-3 (47LD500 only)

My Media

A. Photo List

a. Slideshow Mode (Single, Sequence, Shuffle)

b. Repeat (Off, On)
c. Sort By (Photo Date, File Date, File A-Z)
d. Duration (5 ~ 32)
e. Slideshow Effect (Random, Dissolve, Wipe

Right, Wipe Left, Wipe Up, Wipe Down, Box In,
Box Out)

f. Thumbnail Size (Small, Medium, Large)

B. Music List (47LD500 only)

a. Sort By (Title/File, Genre, Artist, Album)

b. Play Mode (Single, Sequence, Shuffle)

c. Repeat (Off, On)

d. Information (Off, On)

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QMenu

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

Cinema Zoom, Just Scan)
B. Backlight (0 ~ 6)
C. Picture Mode (Vivid, Standard, Cinema, Sport,

Game)
D. Sound Mode (Standard, Music, Cinema, Sport,

Game)
E. Caption (Off, On)
F. Multi Audio (Mono, Stereo, SAP)
G. Sleep Timer (Off, 10 min, 20 min, 30 min, 60 min,

90 min, 120 min, 180 min, 240 min)
H. Del/Add/Fav (Add, Favorite, Delete)

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Chapter 4 Factory preset timings

This timing chart is already preset for the TFT LCD analog & digital display monitors.

RGB For VESA Standard:

Mode

No.

Resolution

Refresh

Rate

(Hz)

Horizontal

Frequency

(KHz)

Vertical

Frequency

(Hz)

Horizontal

Sync

Polarity

(TTL)

Vertical

Sync

Polarity

(TTL)

Pixel
Rate

(MHz)

Remark

1 640 x 480 60 31.469 59.941 N N 25.175 Windows
2 640 x 480 75 37.500 75.000 N N 31.500 Windows
3 800 x 600 60 37.879 60.317 P P 40.000 Windows
4 800 x 600 72 48.077 72.188 P P 50.000 Windows
5 800 x 600 75 46.875 75.000 P P 49.500 Windows
6 1024 x 768 60 48.363 60.004 N N 65.000 Windows
7 1024 x 768 70 56.476 70.069 N N 75.000 Windows
8 1024 x 768 75 60.023 75.029 P P 78.750 Windows
9 720 x 400 70 31.469 70.087 N P 28.322 DOS

*10 @1920 x 1080 60 66.587 59.934 P N 138.500 VESA

Remark: P: positive, N: negative 1920x1080 @60 Hz: Primary
*Note: VESA Reduced Blanking Timing mode, see Table below.

Resolution (1920x1080) through RGB (15-Pin D connector)

Parameters Horizontal Values (Pixels) Vertical Values (Lines)

Address 1920 1080
Front Porch 48 2
Sync Width 32 5
Back Porch 80 24
Total 2080 1111
Frequency 66.587 KHz 59.93 Hz
Sync Polarity P N
Pixel Rate (MHz) 138.5
Refresh Rate (Hz) 60

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FHD video digital preset modes at HDMI

Mode No. Resolution

1 480i
2 480p
3 720p
4 1080i
5 1080p

Video input

Mode No. Resolution

1 480i
2 480p
3 720p
4 1080i
5 1080p

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Chapter 5 Pin Assignment

The TFT LCD monitors use a 15 Pin Mini D-Sub connector as video input source.

Pin Pin Assignment Pin Pin Assignment

1 Red video input 9 +5V

2 Green video input 10 Ground

3 Blue video input 11 No connection

4 Ground 12 (SDA)

5 Ground 13

Horizontal sync

(Composite sync)

6 Red video ground 14 Vertical sync

7 Green video ground 15 (SCL)

8 Blue video ground

RGB Signal:

a. Sync Type TTL (Separate / Composite) or Sync. On Green

b. Sync polarity Positive or Negative

c. Video Amplitude RGB: 0.7Vp-p

d. Frequency H: support to 30K~70KHz

V: support to 60~85Hz

e. Pixel Clock: support to 138.5 MHz

f. Connector type: 15-pin D-Sub, female

g. Impedance: 75

1

15

5

106

11

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HDMI CONNECT PIN ASSIGNMENT:

Pin Signal Assignment Pin Signal Assignment

1 TMDS Data2+ 2 TMDS Data2 Shield

3 TMDS Data2- 4 TMDS Data1+

5 TMDS Data1 Shield 6 TMDS Data1-

7 TMDS Data0+ 8 TMDS Data0 Shield

9 TMDS Data0- 10 TMDS Clock+

11 TMDS Clock Shield 12 TMDS Clock-

13 CEC 14 Reserved (N.C. on device)

15 SCL 16 SDA

17 DDC/CEC Ground 18 +5V Power

19 Hot Plug Detect

HDMI Signal (HDMI):

a. Pin Assignment Refer to HDMI Pin Assignment

b. Type A

c. Polarity Positive or Negative

d. Frequency

H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

H: 67.5KHz V: 60Hz (NTSC-1080P)

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F-Type TV RF connector

NTSC system

Signal level: Analog 1Vp-p Typical

Frequency: 55.25~855.25 MHz

ATSC system

IF-output level: 1Vp-p minimum

Frequency: 57.00~861.00 MHz

QAM system (supporting clear QAM)

IF-output level: 1Vp-p minimum

Frequency: 57.00~861.00 MHz

AV/Composite Video (CVBS) Connector

a. Frequency: H: 15.734KHz V: 60Hz (NTSC)

b. Signal level: Video ( Y + C ):1Vp-p

Sync (H+V):0.3V below Video (Y+C)

c. Impedance: 75

d. Connector type: RCA Jack

Component video Connector

a. Frequency: H: 15.734KHz V: 60Hz (NTSC-480i)

H: 31KHz V: 60Hz (NTSC-480p)

H: 45KHz V: 60Hz (NTSC-720p)

H: 33KHz V: 60Hz (NTSC-1080i)

H: 67.5KHz V: 60Hz (NTSC-1080P)

b. Signal level: Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p

c. Impedance: 75

d. Connector type: RCA Jack

PC audio in

a. Signal level: 0.7Vrms

b. Impedance: 47K

c. Frequency: 20Hz-20KHz

d. Connector type: 3.5  mini jack

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Video audio in

a. Signal level: 0.7Vrms

b. Impedance: 47K

c. Frequency Response: 20Hz-20KHz

d. Connector type: RCA L/R

Digital Audio Out (Optical)

a. Peak emission wave length: 630 – 690 nm

b. Transmission Speed: 16M bps (Max)

c. Connector type: Optical fiber transmitter

Analog Audio out

a. Signal level: 2 Vrms (Max)

b. Impedance: 600

c. Frequency Response: 20Hz-20KHz

d. Connector type: RCA L/R

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Chapter 6 Main Board I/O Connections

J4 CONNECTION [Main BD to Power BD]

Pin Description

1 +5VSB
2 +5VSB
3 +5VSB
4 GND
5 GND
6 GND
7 GND
8 +12V

9 +12V
10 +12V
11 POWER SW ON OFF
12 BL ON OFF
13 Lamp Status
14 PWM DIM

J7 CONNECTION [MAIN BD TO LED LOGO]

Pin Description

1 5VSB

2 WHITE

3 AMBER

JD1CONNECTION [MAIN BD TO IR LIGHT SENSOR BD]

Pin Description

1 OIRI_in

2 5VSB

3 GND

4 LS_SCL

5 LS_SDA

6 reserve

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J2 CONNECTION [JTAG INTERFACE]

Pin Description

1 AV33

2 TVTREF#1

3 GND

4 JTRST#

5 GND

6 JTDI

7 GND

8 JTMS

9 GND
10 JTCK
11 GND
12 Pull High AV33
13 GND
14 JTDO
15 GND
16 N.C.
17 GND
18 JTAG DBGRQ
19 GND
20 JTAG DBGACK

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TCN1 CONNECTION

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TCN2 CONNECTION

J5 CONNECTION [Main BD to SPEAKER]

Pin Description

1 R+

2 R-

3 L+

4 L-

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Chapter 7 Theory of Circuit Operation

The route of D-SUB 15pin input

An RGB (analog) signal is inputted the D-SUB 15pin to the MT5387 which transfers it to a digital

signal by the A/D converter. Then MT5387

generates a Low Voltage Differential Signal (LVDS) for

display device. The Extended Display Identification (EDID) code is recorded in EEPROM.

The route of HDMI CON input

A HDMI (Digital) signal is inputted the HDMI 1&2 CON to the PI3HDMI301 switch. The passing

signal is processed with the MT5387

. Then MT5387 generates a LVDS for display device.

The route of HDTV & Component input

HDTV & Component signal is inputted to the MT5387.After processing, MT5387 generates a LVDS

for display device. The audio signal is inputted MT5387

. After processing, MT5387 transmits the

signal to audio output. an audio amplifier and line out.

The route of CVBS input

The CVBS signal is inputted to the MT5387.After processing, MT5387 generates a LVDS for display

device. The audio signal is also inputted MT5387

. After processing, MT5387 transmits the signal to

audio amplifier. Then, the amplified signal is the output audio signal.

The route of TV input

TV signal is demodulated by the tuner then the demodulating signal is divided into two parts, video

and audio signal. The video signal is processed by MT5387

then MT5387 generates a LVDS for

display device. The audio signal is transmitted in the route named SIF. The SIF signal is

demodulated and decoded by MT5387

. The audio signal is inputted MT5387. MT5387 transmits the

signal to audio amplifier. Then, the amplified signal is the output audio signal.

The route of DTV input

DTV signal demodulated by the tuner then the demodulating signal is divided into two parts, video

and audio signal. The video signal is demodulated by MT5387

. The demodulated signal is

transmitted to and processed by MT5387

. Also, MT5387 generates a LVDS for display device.

The audio signal is transmitted in the route named FAT-IN. The FAT-IN signal is demodulated and

decoded by MT5387

. After processing, MT5387 transmits the signal to audio amplifier. Then, the

amplified signal is the output audio signal.

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The operation of keypad

There are Jag Wheel/Button to control and to select the function of 32LD400/ 42LD400. Also, there

is a LED back light to indicate the status of operation (Red → STANDBY, Green → ON).

MT5387

Ⅰ. GENERAL DESCRIPTION

The MediaTek MT5387 family is a backend decoder and a TV controller and offers high integration

for advanced applications. It combines a transport de-multiplexer, a high definition video decoder, an

AC3 audio decoder, a dual-link LVDS transmitter, and an NTSC/PAL/SECAM TV decoder with a 3D

comb filter (NTSC/PAL). The MT5387 enables consumer electronics manufactures to build high

quality, low cost and feature-rich DTV.

World-Leading Audio/Video T echnology: The MT5387 supports MPEG2 Full-HD video decoder

standards, and JPEG. The MT5387 also supports MediaTek MDDiTM de-interlace solution can reach

very smooth picture quality for motions. A 3D comb filter added to the TV decoder recovers great

details for still pictures. The special color processing technology provides natural, deep colors and

true studio quality video. Also, the MT5387 family has built-in high resolution and high-quality audio

codec.

Rich Features for High Value Products: The MT5387 family enables true single-chip experience.

It integrates high-quality HDMI1.3, high speed VGA ADC, dual-channel LVDS, USB2.0 receiver and

multi-media decoder.

Key Features:

1. ATSC demodulator

2. Worldwide multi-standard analog TV demodulator

3. A transport demultiplexer

4. A MPEG2 video decoder

5. An AC3/MPEG2 audio decoder

6. HDMI1.3 receiver

7. Audio codec

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Functional Block Diagram

GENERAL FEATURE LIST
Host CPU

1. ARM926EJS

2. 16K I-Cache and 16K D-Cache

3. 16K Boot ROM

4. 8KB Instruction TCM

5. JTAG ICE interface

6. Watch Dog timers

7. Build-in CPI analyzer and Cache Hit Rate Meter