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LCD TV MOSEL

TRAINING MANUAL
Agenda

I. Understanding of LCD TV

II. Inside of MOSEL Model

III. Board description

IV. Disassembly

V. Trouble Shooting

VI. Attachment
. Understanding of LCD TV




UNDERSTANDING
OF LCD TV
. Understanding of LCD TV


CONTENTS

I. LCD TV advantage

II. Basic theory of LCD PANEL

III. Basic block of LCD TV

IV. Basic block of main PBA

V. What is scaler?

VI. TV signal types

VII. TV connector types
. Understanding of LCD TV


LCD TV Advantage

High Sharpness, Resolution
Thin and Light ( 40 Inch is 5cm thickness )
Low Power Consumption
Real HDTV
Long Life
. Understanding of LCD TV


Basic Theory Of LCD PANEL

A) Lamp Make Light
B) TFT Adjust LCD Array
C) LCD Array can Adjust Light amount (Like Camera Iris )
D) Color Filter Make RGB Color

A) B) C)
D)




A) Back Light B) TFT C) LCD D) Color Filter
. Understanding of LCD TV


Basic Block of LCD TV

D e v e lo pe m e nt P a r t

L C D P ane l
D ig ital
A /D C o nv erte r S ig nal
G rap h ic S ig nal P ro ce s s o r
(IM A G E S C A L E R )
A nalo g /
D ig ital SM PS
S ig nal A udio



A n a lo g R F /V I D E O /S _V I D E O /P C ....
D ig ta l H D M I /D V I
. Understanding of LCD TV

Basic Block of Main PBA

B o D agram
l ck i
Anal og Par t Di gi tal Par t


( PC )
AC
D
I MG
AE LV S
D
RF SC LE
A R
VI DEO
S- VI DEO Vdo
i e LCD
SCART
AC
D PN
A EL
D co e
e dr


+5V
P I n rte
ve r
O +3. 3V Mi com
W
E +12V
R Audi o Speaker
. Understanding of LCD TV


What is SCALER?

- CRT can display any resolution picture without conversion
but LCD and PDP can do only with scaler
- Accepting input images from multiple sources and displaying
them on any flat panel display
- Scaler is most important IC in flat panel display




Scaler
. Understanding of LCD TV

Signal types
1. RF(Radio Frequency)
- 50~900Mz Frequency Domain
- Composite signal+sound signal
2. CVBS(Usually AV)
- Composite video and sound signal
3. Super VHS
- Separate Y and C from composite signal
4. RGB
- Usually use PC, 15pin D-sub
5. Analog Component (Y,Pb,Pr)
- Usually Component
6. Digital Component(Y,Cb,Cr)
7. DVI(Digital Visual Interface)
- Standard from DDWG(Digital Display Working Group)
- TMDS(Transition Minimized Differential Signaling Signal)
8. HDMI(High Definition Multimedia Interface)
- DVI+Digital Sound
. Understanding of LCD TV

TV signal connector types




Composite Component


S-Video




HDMI HDMI Cable
. Inside of MOSEL Model




Inside of Mosel
Model
. Inside of MOSEL Model


CONTENTS

I. Introduction

II. General specification

III. Control & Connection Panel

IV. Block Diagram

V. Inner Features

VI. Some functions of MOSEL

VII. Key Parts Explanation
. Inside of MOSEL Model



Introduction

Best Picture Quality

Simple Function, New Design

Acceptable Price

Support HDMI(DTV Only)

Some Functions (Dynamic Contrast,
Energy Saving)
. Inside of MOSEL Model

Items MOSEL
Model Name LE32M** LE40M**
Size (W*D*H) w/o Stand 800*252*602.5 (mm) 994*326*696 (mm)
Display area 575.77(H) x 323.71(V) 697.6845(H) x 392.256(V)
Weight with Stand 24.8kg 24.5kg
Panel Resolution 1366*768 1366*768
A/V 2 Scarts in back 2 Scarts in back
S-Video 1 S-video in side 1 S-video in side
1 component in back 1 component in back
DVD
480i/p,/576i/p,720p,1080i 480i/p,/576i/p,720p,1080i
PC 1 Dsub in back 1 Dsub in back
HDMI 2 HDMI in back 2 HDMI in back
Tuner 1 RF analog tuner 1 RF analog tuner
Sound Output 16 ohm, 5W 8 ohm, 10W
General PIP O O
Sound option SRS TruSurround XT SRS TruSurround XT
DNIe O O
Headphone O O
Response time <16ms <16ms
Luminance [cd/m2, typical] 500 450
C/R [typical] 800 1000
Anynet X X
View Angle(H/V) 170/170 170/170
Power Supply AC 220~240V,60/50Hz AC 220~240V,60/50Hz
Power Consumption 100W 125W
Color System PAL/SECAM/NT4.43 PAL/SECAM/NT4.43
Sound System BG,DK,I,L BG,DK,I,L
. Inside of MOSEL Model

Items MOSEL
Model Name LE40M9**
Size (W*D*H) w/o Stand 994*326*696 (mm)
Display area 697.6845(H) x 392.256(V)
Weight with Stand 27.4kg
Panel Resolution 1366*768
A/V 2 Scarts in back
S-Video 1 S-video in side
1 component in back
DVD
480i/p,/576i/p,720p,1080i
PC 1 Dsub in back
HDMI 2 HDMI in back
Tuner 1 RF analog tuner
Sound Output 8 ohm, 10W
General PIP O
Sound option SRS TruSurround XT
DNIe O
Headphone O
Response time <16ms
Luminance [cd/m2, typical] 450
C/R [typical] 1000
Anynet X
View Angle(H/V) 170/170
Power Supply AC 220~240V,60/50Hz
Power Consumption 125W
Color System PAL/SECAM/NT4.43
Sound System BG,DK,I,L
. Inside of MOSEL Model
Control & Connection Panel
. Inside of MOSEL Model
Control & Connection Panel
. Inside of MOSEL Model
Control & Connection Panel
. Inside of MOSEL Model
Block Diagram




FRCH
. Inside of MOSEL Model
Inner Feature of 32"
Power, Main Board, Panel(with Inverter)




POWER B'D

MAIN B'D

INVERTER




SPEAKER
. Inside of MOSEL Model
Inner Feature of 40"
Power, Main Board, Panel(with Inverter)




IP PANEL



IP BOARD MAIN B'D




SPEAKER
. Inside of MOSEL Model
Inner Feature of LED 40"
Power, Main Board, Panel(with Inverter)




SMPS

INVERTER MAIN B'D




SPEAKER
. Inside of MOSEL Model

Some Functions of MOSEL



Dynamic Contrast : Enhancing Contrast Ratio
(Up to 1600:1)

Energy Saving : Realize Low Power
Consumption by Selecting Energy Saving
Level ( Off, Low, Middle, High )
. Inside of MOSEL Model

Some Functions of MOSEL
-Dynamic Contrast
Reproducing optimized contrast by detecting the
characteristics and contrast level of input signal.
Enhancing dynamic contrast (Up to 1600:1)

Out
Out




Mi d r ange dynam c
i
In
In r ange Enhancem ent
Out Out



Cont r as t
In In Enhancem ent


Luma Luma Luma

Di m i ng
m
Y Y Y
. Inside of MOSEL Model

Some Functions of MOSEL

-Contrast Enhancement Factor


OUT
255
Gam a
m
Cur ve

200




120




IN

110 190 255
. Inside of MOSEL Model

Some Functions of MOSEL
-Contrast Enhancement & Dimming

Out put
V



4
0 255
MEAN
0
< Dar k I mage MEAN
> I nput < Anal og
C MEAN U
Di m i ng >
m

Out put
Dut y( %
)


98

0 255
MEAN 50

< Br i ght I nput MEAN
Image > C MEAN U
< PW Di m i ng
M m
>
. Inside of MOSEL Model

Some Functions of MOSEL
Energy Saving
Off