Beko L6M Schematic

SERVICE MANUAL
LM CHASSIS

CONTENTS PAGE

Safety Instructions 3
Technical Specifications 4
Features 5
Inputs/Outputs Diagram 6
Remote Control 7
Set Apperance 8
Service Adjustments 9
Block Diagram 12
Power Supply Diagram 13
Data Sheet VCT4993 14
Data Sheet MST6181 16
Data Sheet MTV512 24
Data Sheet TVP5150A 26
Parts List 32
Circuit Diagram Attached

SAFETY PRECAUTIONS

GENERAL GUIDELINES

1. Always use the manufacturer’s replacement safety

components. The critical safety components marked
with on the schematics diagrams should not be

by other substitutes. Other substitute may create the
electrical shock , fire or other hazards. Take
attention to replace the spacers with the originals.
Furthermore where a short circuit has occurred ,
replace those components that indicate evidence of
overheating.

2. After servicing , see that all the protective devices

such as insulation barriers, insulation papers, shields
and isolation R-C combinations are correctly
installed.

3. When the receiver is not being used for a long time

of period of time , unplug the power cord of the
Adaptor from the AC outlet.

Color TFT LCD Module is very sensitive
both electrically and physically.Users,
therefore, are requested to follow the
“Guidance of handling color TFT LCD
Module”on the followings.

1 - Be careful not to make scratch on the

polarizer.

Surface of polarizer is soft and can be physically

damaged easily.

Please do not touch, push or rub polarizer surface

with materials over HB hardness.

2 - Keep clean the surface.

Please wear rubber glove when touch the surface of
LCD screen. Please use so ft and anti-static material
as cleaner.

3 - Keep out of water.

Water on/in the LCD may cause electrical short or
corrosion. Please wipe out dry or water carefully.

4 - Prevent swift Temperature &

Humidity change.

Instantaneous temperature and/or humidity change
can make dew or ice which cause nonconformance
such as malfunction.

5 High temperature & high humidity

reduce the life-time.

LCD is not proper to be used at high temperature
and high humidity. Please keep specified
temperature and humidity condition.

6 - Keep out of Corrosive Gas.

Corrosive gas effect the polarizer and the circuit
chemically and cause defects accordingly.

7 - Electrostatic discharge can make

Damage

There are electro-static sensitive components such
as CMOS in LCD Module. Please earth human
body when handle the LCD.In addition, please do
not touch the interface connector pin with bare.

8 - Do not operate for a long time under

the same pattern

Operating LCD for a long time under the same
pattern can cause image persistence and can
damage it. Please follow following guidance.

1. Turn the power off when do not use.

2. Change the pattern periodically.

Technical specifications chart

Picture tube

size/type

Sound outlet

power (10% THD)

Power

consumption

Stand-by Power

consumption

27” 16:9

active matrix TFT

2x7 W

120 W

1 W

General technical specifications

Power supply

AC: ............................................................................

Program memory: ...................................................100

RF Antenna input: ...................................................75 Ohm (Co-axial)

Loudspeaker impedance: ......................................4 Ohm

Sound systems:.......................................................Mono/Stereo/Nicam

Batteries:..................................................................2xUM - 4, IEC R03 or AAA 1.5V

Received channels:.................................................VHF (Band I channel 2-4)

..................................................................................VHF (Band III channel 5-12)

..................................................................................UHF (Channel 21-69)

..................................................................................Cable TV (S1-S20/S21-S41)

Received broadcasting systems............................PAL B G

230V~50 Hz

PAL SECAM BG
PAL SECAM BG DK/DK’
PAL SECAM BG LL’
PAL I

Note: Your television has been manufactured in accordance with your country by selecting from
among the above mentioned broadcasting systems and this system cannot be changed by the user
except the case described below: In countries where BG/DK and BG/LL’ broadcasts are done (BG
or DK / BG and LL’). For further information, see the settings part about your television.

4

Your Television

Features

• 27” TFT-LCD WXGA Panel

• Available for cable broadcasts

• 2x7 W Stereo sound

• 12 pages of teletext Feature

• PIP (Picture in Picture) Feature from AV

• Wide angle of vision

• Scart socket, AV Socket and external sound system connection

• S-VHS and Cinch inputs for S-Video connection

• PC connection

• Low energy consumption

•AVL

•ATS

• Programmable power off

• Graphic equalizer

• The feature of sharpness in Colour Transitions (CTI)

• Sharpness feature and picture resolution (LTI) in the black-white transitions

• A clear Picture made possible by the Digital Comb Filter

• On screen viewing of all settings, program numbers and all the processes

• Manual Fine Tuning

• 100 Program memory

• Infrared Remote Control equipped all the functions

• Child Lock

• Feature of viewing the NTSC broadcast to be entered via Scart
Easy performance of the processes via the advanced menu system. Ability to choose 26 different
menu languages.

• HDMI feature

5

S-VHS

AV-3

12

11

SCART1SCART 2RLV

AUDIO

DVI-D

LRYPbPr

HDMI

PC-

R

LV

ANT IN

COMPONENT

AV-OUT

VIDEO INPUT

PC-DVI

IN

AUDIO-IN

13

10

AV3

S-VHS

V L R

15

16

17

18

123

SPDIF L

AUDIO-OUT

20 22 25 28 29 3019 21 23 24 26 27

1. Standby status indicator

2. Network power on/off button

3. Remote control receiver

4. Volume turn-down button

5. Volume enhancement button

6. Menu Button

7. Source selection

8. Program decrease button

9. Program increase button

10. Speaker

11. Scart 1

12. Scart 2

13. Power supply input

14. Headphones output

15. S-VHS connector

ANT IN

4

567 8 9

AUDIO

L PC-INR Y Pb Pr

COMPONENT
VIDEO INPUT

HDMI

16. Video input CINCH connector

17. Sound input CINCH connector (Left/L)

18. Sound input CINCH connector (Right/R)

19. SPDIF Digital audio output

20. Sound output (Left/L)

21. Sound output (Right/R)

22. Antenna input

23. Component sound input (L)

24. Component sound input (R)

25. Component video input (Y)

26. Component video input (Pb)

27. Component video input (Pr)

28. HDMI

29. VGA (PC connection input)

30. PC sound input

PC

AUDIO-IN

14

Note:

• Please do not use the video RCA and S-Video connection simultaneously, in that case, these
two devices might influence the picture quality of one another.

• RGB offers the best picture quality over the Scart.

6

Remote Control

1

2

3
4

5

6

7

8

9

10
11

12

13
14
15

16

17

18

19

20
21
22

PIP SEL.

AV

123

456

789

ZOOM

PR- PR+

VOL-

i

PIP POS.

PC

0

OK/

FREEZE

TEXT/

MIX

1. Picture Format selection button ( )

PAT

PIP SIZE

TV

2. Temporary sound mute (Mute) button (

3. Equalizer selection button (

23
24

25

26
27

28

4. PIP Position selection button

5. PIP/PAP On-Off button

6. AV modes selection menu button

7. Numeric buttons

8. ZOOM mode selection button

9. Program down button (

10. Upward movement button(

11. Volume turn-down button (

12. Left movement button (

)

)

) (Menus)

)

) (Menu)

)

13. Confirmation(OK) and Temporary picture
freeze button (Freeze) ( )

SWAP

29

30

14. Info / Txt index page button (

15. Downward movement button (

16. Txt Question/Answer button (Reveal) (

17. Red teletext button (

VOL+

MENU

?

31

32

33

34

35

18. Teletext page enlarge button (Double) (

19. Blue Teletext button (

)

20. Teletext / Mix selection buttons (

21. UPDATE Button/Teletext time (

22. Yellow teletext button (

23. Stand-by On/Off button (

24. Picture Mode selection button (

25. PAT (Picture and Teletext) Mode
Power On-Off button

)

) (Menus)

)

)

)

)

)

)

)

)

26. PIP size selection button

36

27. PC mode access button

28. PC mode access button

29. Final program selection button (SWAP)

)

(

30. Program forward selection button (

31. Audio turn up button (

32. Right movement button (

)

) (Menus)

)

33. MENU button

34. Txt Stop button (Hold) ( )

35. Green teletext button (

36. Sub page button (SUB PAGE) (

)

)

7

SET APPERANCE

INVERTOR(BUILT IN PANEL) MAIN CHASSIS POWER SUPPLY BOARD

8

LM SERVICE MODE

1. Activating the Service Menu

When the menu is on the screen press ‘9’, ‘3’, ’0’, ’1’ on the remote controller. This will activate
the service menu.

2. Service Mode Options

There are 6 submenus in this mode:
OPTIONS0, OPTIONS1, SOUND OPTIONS,IF SETTINGS, DIMMING, ADJUSTMENTS

2.1 OPTIONS0

STANDBY CUSTOME (Customer), FACTORY
TEXT Teletext Type : FAST (Fasttext), FAST TOP (Fastext and Toptext)
TEXT TBL AUTO : Selects the table according to the selected menu language
WEST: English-French-German-Turkish-Spanish-Italian-Finnish-Swedish

Norwegian, Danish

EAST : Polish-French-Hungarian-Czech-German-Sovenian-Italian-Romanian
GREE : WEST + Greek
CYRL : English-Russian-German-Czech-Estonian-Ukrainian-Letvian
ARAB : West + Arabian
FARS : West + Persian
HEBR : West + Hebrew
LANGUAGE A: English-German-French-Italian-Spanish-Portuguese-Greek-Turkish-Dutch-Swedish-

Danish-Norwegian-Finnish-Slovenian-Polish-Hungarian-Russian-Hebrew-Romanian­Croatian-Czech-Slovak-Albanian-Bulgarian- Macedonian-Serbian

B: English-German-French-Italian-Spanish-Portuguese-Greek-Turkish-Dutch-Swedish-

Danish-Norwegian-Finnish-Slovenian-Polish-Hungarian-Russian-Romanian-Croatian­Czech-Slovak-Albanian-Bulgarian- Macedonian-Arabic-Persian

PANEL Selects the software according to the panel name :

26 AU5, 32 AU3, 26 SS2, 32 SS3, 27 CH5, 32 CH2, 26 LP6,37 LP2, 26
QD2, 32 QD2

PIP NO (PIP via AV is not on), AV (PIP via AV is on)
PLUG PLAY ON (Demo mode), OFF

2.2 OPTIONS1

BLUEBACK ON, OFF
CTI Colour Transient Improvemnet Feature : ON, OFF, MENU
DNR Digital Noise Reduction : ON, OFF, MENU (selection via User Menu)
PROTECTION ON, OFF
PANORAMA AVAIL (On), NAVAIL (Off)
RC UNIT Remote Control Type: 43 Key, 45 key
PAT Picture and Text feature: AVAIL (On, Default), NAVAIL (Off)
HOTEL Simple Hotel TV feature: AVAIL (On), NAVAIL (Off)
HOTEL VOL Maximum sound level for Hotel Mode

9

2.3 SOUND OPTIONS

BG EUROPE, NEWZ (New Zelland) AUST (Australia), NAVAIL (no BG)
DK AVAIL, NAVAIL
L/L AVAIL, NAVAIL
DOLBY AVAIL, NAVAIL
BASS OPT NONE (bass is not activated), DYN (Dinamic bass is activated),

SUBW (Subwoofer feature is on)

HEADPHONE AVAIL, NAVAIL
CARRI MUTE MSP (for all markets except Turkey), MICRO (for Turkey)

2.4 IF SETTINGS

TUNER PS DA5, THOMSON, TEMIC, PS D44, ALPS, PHILIPS
VHF III UHF AGC adjustment is 5 for this frequancy band
VHF I AGC adjustment is 5 for this frequancy band
AGC Method AGC adjustment method: FIXED, SYNC&PW, SYNC, S&PW&PD (Default)
SECAM MTD Secam decoding method : OLD, NEW (default)

2.5 DIMMING

No adjustment will be made in this menu for service purposes. Default value is 0.

2.6 ADJUSTMENTS

No adjustment will be made in this menu for service purposes. Default values are given below:

VCTI BLE BLE MODE 3
BLE GAIN 2
BLE TILT 8
BLE STATIC 7

FAC LTI LTI CORING 0
LTI GAIN 0

SLL SUCARR SLLTHDV 6
SUBCARIIER 19

LUMA DELAY DLY PAL 7
DLY SECAM 10
DLY NTSC 9

SCART RGB BRI -14
CONT 47
CB SAT 50
CR SAT 50
TINT 0
RGAIN 34
GGAIN 33
BGAIN 35

10

MSTAR 6CR 5
6CG 5
6CB 8
6CC 0
6CM 3
6CY 2
6CF 5
SPECTRUM 1

ADJUST R GAIN 122
G GAIN 128
B GAIN 90
R OFFSET 125
G OFFSET 125
B OFFSET 126
SUBCON 58
SUB BRI 42

2.7 EEPROM EDIT

No adjustment will be made in this menu for service purposes.

11

Chassis LM Block Diagram

Analog Tuner1

TU300

Analog Tuner2

TU302

IC329

Flash

IC335

128MB DDR

IC328

TxtRAM

Scart1

Scart2

SVHS

IR&Key

I2C

IC311

MTV512

Monitor

Controller

IC324

VCTi4993G

MAX9704

Audio Amp.

TDA7059

Headph. Amp

IC321

IC338

IC336

FRC 94XXA

IC309

TVP150

Video Decoder

IC301

HDMI

IC334

MST6181

VGA YPrPb

Optional

LVDS

Basic

Power Supply Diagram

+12V

+3V3

T300

5V or 12V for LCD Panel

3V3 MST6181
VCTi
MST3383

2V5 DRAM
MST3383
MST6181

1V8 VCTi
MST6181

1V8 FRC

Only for FRC

12V Audio

T300 5V VCTi, Tuner

8V VCTi, Switches

IC300

IC302

IC337

IC306

IC305

IC308

IC307

13

VCT 49xyI, VCT 48xyI ADVANCE INFORMATION

Volume 1: General Description

General Description
Release Note: This data sheet describes functions

and characteristics of the VCT 49xyI, VCT 48xyI
version F1.

1. Introduction

The VCT 49xyI, VCT 48xyI is an IC family of high-qual­ity single-chip TV processors. Modular design and
deep-submicron technology allow the economic inte­gration of features in all classes of single-scan TV
sets. The VCT 49xyI, VCT 48xyI family is based on
functional blocks contained and approved in existing
products like DRX 396xA, MSP 34x5G, VSP 94x7B,
DDP 3315C, and SDA 55xx.

Each member of the family contains the entire IF,
audio, video, d isplay, and deflection processing for 4:3
and 16:9 50/60-Hz mono and stereo TV sets. The inte­grated microcontroller is supported by a powerful OSD
generator with integrated Teletext & CC acquisition
including on-chip page memory.

Video & Sound IF

DRX 396xA

Audio Processing

MSP 34x5G

– Submicron CMOS technology
– Low-power standby mode
– Single 20.25 MHz reference crystal
– 8-bit 8051 instruction set compatible CPU
– Up to 256 kB on-chip program ROM
– WST,PDC,VPS,andWSSacquisition
– ClosedCaptionandV-chipacquisition
– Up to 10 pages on-chip teletext memory
– Multi-standard QSS IF processing with single SAW
– FM Radio and RDS with standard TV tuner
– TV-sound demodulation:

• all A2 standards

• all NICAM standards

• BTSC/SAP with MNR (DBX optional)

•EIA-J

– Baseband sound processing for loudspeaker chan-

nel:

• volume and balance

• bass/treble or equalizer

• loudness and spatial effect (e.g. pseudo stereo)

• Micronas AROUND (virtual Dolby optional)

• Micronas BASS and Subwoofer output

• further optional and licence requiring sound
enhancements as BBE, SRS Wow and Micronas
VOICE

– CVBS, S-VHS, YC

and RGB inputs

bCr

– ITU656 input

Video Processing

VSP 94x7B

Display & Deflection

DDP 3315C

Control, OSD, Text

SDA 55xx

VCT 49xyI
VCT 48xyI

Fig. 1–1: Single-chip VCT 49xyI, VCT 48xyI

1.1. Features

The VCT 49xyI, VCT 48xyI family offers a rich feature
set, covering the whole range of state-of-the-art 50/
60 Hz TV applications.

– PSSDIP88-1 package
– PMQFP144-2 package

– 4H adaptive comb filter (PAL/NTSC)
– multi-standard color decoder (PAL/NTSC/SECAM)
– Macrovision Detection
– Nonlinear horizontal scaling “panorama vision”
– Luma and chroma transient improvement (LTI, CTI)
– Non-linear color space enhancement (NCE)
– Dynamic black level expander (BLE)
– Selective Color Enhancer (SCE)
– 8/10 bit ITU656 output
– Scan velocity modulation output
– Soft start/stop of H-drive
– Vertical angle and bow correction
– Average and peak beam current limiter
– Nonlinear and dynamic EHT compensation
– Black switch off procedure (BSO)

14

VCT 49xyI, VCT 48xyI ADVANCE INFORMATION

Volume 1: General Description

1.2. Chip Architecture

R
E
K

T

C
G

F

I

A
T

S

N

I
A

W

A

U

B

E

O

U

P

S

A

S

IFIN+

IFIN-

CVBS in

YCbCr in

RGB in

CVBS out

656 in

IF

Frontend

Video

Frontend

Slicer

24kB

Char ROM

20kB XRAM

IF

Processor

Comb

Filter

Component

Bus

Arbiter

256kB

Prog ROM

Interface

Sound

Demodulator

Color

Decoder

Display

Generator

CPU
8051

Memory

Interface

ADB, DB, PSENQ,

PSWEQ, WRQ, RDQ

Panorama

Scaler

Audio

Processor

I2C Master/

Slave

Timer

CRT

PWM

ADC

UART

Watchdog

RTC

I/O-Ports

Pxy

Display &
Deflection
Processor

Video

Backend

Reset & Test

Logic

Clock

Generator

656 out
PROT
HOUT
HFLB

VERT
EW
SVM
RGB out
RGB in

SENSE
RSW

I2C

RESETQ
TEST

XTAL1
XTAL2

Fig. 1–2: Block diagram of the VCT 49xyI, VCT 48xyI

15

FEATURES

MST6181LDA

SXGA/WXGA LCD Multi-Function Monitor Controller with Dual LVDS Transmitter

Product Brief Version 1.0

Ÿ Input supports up to UXGA & 1080P
Ÿ Panel supports up to SXGA/WXGA
Ÿ Integrated 8-bit triple-ADC/PLL
Ÿ Integrated DVI/HDCP/HDMI compliant receiver
Ÿ RGB/YUV 444 and YUV422 digital video input

ports

Ÿ Dual high-quality scaling engines
Ÿ Built-in 3-D video de-interlacer
Ÿ Video-over-graphic PIP
Ÿ Video-by-graphic split screen
Ÿ MStarACE-2 picture/color processing engine
Ÿ Embedded On-screen display controller (OSD)

engine

Ÿ Digital audio I/O & sync processor
Ÿ Built-in dual-link LVDS transmitter
Ÿ 5 Volt tolerant inputs
Ÿ Low EMI and power saving features
Ÿ Supports PWM & GPO controls
Ÿ 256-pin LQFP

n Analog RGB Compliant Input Ports

Ÿ Dual analog ports support up to 165Mhz
Ÿ Supports PC RGB input up to UXGA@60Hz
Ÿ Supports HDTV RGB/YPbPr/YCbCr up to 1080P
Ÿ On-chip high-performance PLLs
Ÿ Supports Composite Sync and SOG

(Sync-on-Green) separator

Ÿ Automatic color calibration

n DVI/HDCP/HDMI Compliant Input Port

Ÿ Operates up to 165 MHz (up to UXGA @60Hz)
Ÿ Single link on-chip DVI 1.0 compliant receiver
Ÿ High-bandwidth Digital Content Protection

(HDCP) 1.1 compliant receiver

Ÿ High Definition Multimedia Interface (HDMI)

1.0 compliant receiver with I2S and S/PDIF
digital audio outputs

Ÿ Long-cable tolerant robust receiving

n Video Input Port

Ÿ One RGB/YUV 4:4:4 24-bit and one 4:2:2

ITU-R BT.656 8-bit digital video input ports

Ÿ 24-bit port supports 8/16-bit YUV 4:2:2 or

24-bit RGB/YUV 4:4:4 interlaced/ progressive
video input up to 1080i/720P

n Auto-Configuration/Auto-Detection

Ÿ Auto input signal format (SOG, Composite,

Separated HSYNC, VSYNC, and DE), and input
mode (all VESA & IBM modes w/ resolution
and polarity) detection

Ÿ Auto-tuning function including phasing,

positioning, offset, gain, and jitter detection

Ÿ Sync Detection for H/V Sync

n Dual High-Performance Scaling Engine

Ÿ Fully Programmable shrink/zoom capabilities
Ÿ Nonlinear video scaling supports various

modes including Panorama

Ÿ Flexible independent control of sharpness for

TV and graphic windows

n Video Processing & Conversion

Ÿ 3-D motion adaptive video de-interlacer with

upgraded edge-oriented adaptive algorithm for
smooth low-angle edges

Ÿ Automatic 3:2 pull-down & 2:2 pull-down

detection and recovery

Ÿ PIP with programmable size and location,

supports multi-video applications

Ÿ Video-over-graphic overlay
Ÿ Video-by-graphic split screen
Ÿ Frame rate conversion for both main window

and sub window

Ÿ MStar 2nd Generation Advanced Color Engine

(MStarACE-2) automatic picture enhancement
gives:

Ÿ Brilliant and fresh color
Ÿ Intensified contrast and details
Ÿ Vivid skin tone
Ÿ Sharp edge
Ÿ Enhanced depth of field perception
Ÿ Accurate and independent color control

Ÿ Independent picture control for main and sub

windows

Ÿ sRGB compliance allows end-user to

experience the same colors as viewed on CRTs
and other displays

Ÿ Programmable 10-bit RGB gamma CLUT
Ÿ 3-D video noise reduction

Version 1.0 - 16 - 1/12/2006

Copyright © 2006 MStar Semiconductor, Inc. All rights reserved.

MST6181LDA

SXGA/WXGA LCD Multi-Function Monitor Controller with Dual LVDS Transmitter

Product Brief Version 1.0

n On-Screen OSD Controller

Ÿ 16/256 color palette
Ÿ 256/512 1-bit/pixel font
Ÿ 128/256/512 4-bit/pixel font
Ÿ Supports texture function
Ÿ Supports 4K attribute/code
Ÿ Horizontal and vertical stretch of OSD menus
Ÿ Supports button function
Ÿ Pattern generator for production test
Ÿ Supports OSD MUX and alpha blending

capability

Ÿ Supports blinking and scrolling for closed

caption applications

n LVDS Panel Interface

Ÿ Supports dual link up to 135MHz dot clock for

SXGA

Ÿ Supports 2 data output formats: Thine & TI

data mappings

Ÿ Compatible with TIA/EIA
Ÿ With 6/8 bits options
Ÿ Reduced swing for LVDS for low EMI
Ÿ Supports flexible spread spectrum frequency

with 360Hz~11.8MHz and up to 25%
modulation

n External Connection/Component

Ÿ Support 8051 parallel MCU bus
Ÿ Supports 4-wire double-data-rate direct MCU

bus

Ÿ 32-bit data bus for external frame buffer (SDR

or DDR DRAM)

Ÿ All system clocks synthesized from a single

external clock

GENERAL DESCRIPTION

The MST6181LDA is a high performance and fully integrated graphics processing IC solution for multi-function
LCD monitor/TV with resolutions up to SXGA/WXGA. It is configured with an integrated triple-ADC/PLL, an
integrated DVI/HDCP/HDMI receiver, a video de-interlacer, two high quality scaling engines, an on-screen
display controller, and a built-in output clock generator. By use of external frame buffer, PIP is provided for
multimedia applications. It supports de-interlaced full-screen video, video-on-graphic overlay, split screen,
frame rate conversion, and aspect ratio conversion for various video sources. To further reduce system costs,
the MST6181LDA also integrates intelligent power management control capability for green-mode requirements
and spread-spectrum support for EMI management.

Version 1.0 - 17 - 1/12/2006

Copyright © 2006 MStar Semiconductor, Inc. All rights reserved.