Beko BKL15LW03 Schematic

ULC TARGET SPECS

Ultra low cost 15"

(15" - 19" 4:3)

SCALER MST7610 (Maria) Mstar or Renesas Scaler DISPLAY

Type TFT Aspect ratio 4:3 Brightness 250 cd, 180 cd

Contrast ratio (typical) 500:1

Diagonal screen size 15 inch / 38 cm Panel resolution 1024*768 Viewing angle (H / V) 160/155

Response time (typical) 12 CONNECTIONS

Antenna (IEC 169-2, Female)

Scart 1 full default S-video In (DIN) NO Video In (RCA) 1 Audio In (2 RCA) 1 Video Out (RCA) NO

1

Audio Out (2 RCA) NO

Progressive YPbPr In (3 RCA)

Audio In for progressive input (2 RCA)

DVI NO HDMI NO

PC Audio (L, R) PC input via stereo jack available (OPT) Subwoofer NO

D-Sub 15 D-SUB 15 available (OPT) SPDIF Coaxial NO SPDIF Optic NO RS232 NO Headphone NO

ADD ON MODULE CONNECTION OPTIONS Front\Side AV NO

VIDEO & GRAPHICS IN\OUT

CVBS In 1 through SCART, 1 through RCA RF In 1 through tuner Y\C In No

No

RGB+FB In-Video 1 through SCART1 RGB+HS, VS In -

Graphics YPbPr In

(Progressive) DVI In NO

HDMI In NO

CVBS Out 1 through SCART1 RGB, FB Out no

HDMI out no

AUDIO IN\OUT Stereo L, R In 1 mono through RCA, 2 MONO through SCARTS

AV Stereo IN 1 stereo through RCA, 1 stereo through SCARTS, 1 PC audio in

Stereo L, R Out NO Subwoofer Out NO

S\PDIF In NO S\PDIF Out NO Subwoofer Out NO Subwoofer Output

Power Audio Output Power 1x3W

1 through DSUB-15

NO

Number of speakers 1 Speaker Placement Inside the cabinet

ANALOG FRONT END Type Receiving System

Input Freq. Range (MHz)

Tune down to 45,25MHz Tune up to 863,25MHz

Input Connector IEC 169-2, Female Aerial Input

Impedance Signal Level NO Tuning System FST Tuning Control PLL Antenna Loop

Through RF Modulator NO Channel Bandwidth 6\7\8 MHz Switchable FE Control I2C

YES

75 Ohm (unbalanced)

NO

Conventional tuner

+IF Demodulator

VHF (48,25-463,25MHz)

UHF (471,25-855,25MHz)

TV system PAL/SECAM BG/DK/I From Service Menu

Video Playback NTSC, PAL, SECAM VIDEO & GRAPHICS

PROCESSING

De-multiplexing

ADC (Video) Resolution 8 bit Chroma Decoding Standart PAL, SECAM, NTSC Comb Filter Color Temparature Yes LTI, CTI Filters Yes

Data Rate >= PID Filters >= Section Filters >=

Sync On Green (SOG) support on graphics

De-Interlacer 2D-DI PAT No Gamma Correction Yes PIP\PAP\ No OSD font based Saturation Yes Contrast Yes Tint Yes Noise reduction 2D

AUDIO PROCESSING Virtual Dolby/SRS

WOW Subwoofer NO Effect\Spatial NO Dynamic Bass NO VBI DATA

PROCESSING Teletext Teletext 1.5 Fast text optional Top text optional page 8 WSS YES VPS\PDC\CNI YES Closed Caption NO SUPPORTED

OUTPUTS FOR DISPLAYS

Single TTL support YES Dual TTL support NO Single 10-bit TTL

support Dual 10-bit TTL

support Single LVDS support

(8-bit) Dual LVDS support

(8-bit) Single LVDS support

(10-bit)

YES

No

NO

YES

NO

Dual LVDS support (10-bit)

Timing Control Support

Supported Output Upto WXGA+ at 60Hz (1440x900)

APPLICATIONS Menu System Beko GUI / Beko OSD Remote Control Supported Menu

Languages Picture Formats

(Auto, 4:3, 16:9, 14:9, Zoom, LetterBox, Subtitle)

WSS (Wide Screen Signalling)

Channel skip time

ATS (Automatic Tuning System)

Black Line Detection no Manual Search Channel search

NO

tbd

for 4:3 models 16:10 ,4:3 and Auto ,16:9 models have all

YES

Frequency Search time tbd

Beko RC

<1 sec

AFC (Auto Frequency Correction)

Number of Program Storage

No Ident Timer YES Picture Freeze no Equalizer NO

AVL (Automatic Volume Level)

Optic sensor no Sound Status

Memory Picture Status

Memory Zapping\Swap Swap Child Lock NO

Program Lock no Picture Format

Switching Through Scart (Pin 8)

Auto RGB Detect Through Scart (Pin

16) DDC Support YES

Timer On\Off or Sleep Sleep

YES

100 99

NO

no

YES

Picture Smart Modes YES

Sound Smart Modes no Scart2 Out Selectable no S-Video Input

Through Scart2

Wake Up in PC

POWER SUPPLY PSU Type LIPS Input Range 100V-240V, 50, 60Hz Groundless AC Plug YES (EXCEPT UK) St-By Power

Consumption 12V ext power in NO REGULATIONS

EMC

SAFETY EN60065 CABINET

Keyboard

LED

no

Stby to On in PC mode when last watched is PC

Stby to On automatically when PC signal is available

<2W

On\Off no Volume Up no Volume Down no Program Up no Program Down no Menu no Source no Single color

/Single Intensity Single Color

/Double Intensity Multi color no On Timer Led NO

YES

EN55020 EN55013

EN55022 (with PC)

no

yes

SEQUENCE OF ADJUSTMENT AND CHECKING

SERVĐS MENU OPTIONS 1

OPTIONS 1 FAST TEXT: ON: Fast Text features ON, OFF: Fast Text feature OFF.

NOTE : Unless customer special choice, select it ON. TOP TEXT : ON: Top Text features ON, OFF: Top Text feature OFF. NOTE : Unless customer special choice, select it OFF. TEXT LANGUAGE : AUTO; automatically selects the TEXT language NOTE : Unless the customer demands; it will be set as AUTO WEST : English,French, German, Turkish, Spanish, Italian, Finnish,

EAST : Lehçe,Fransızca,Macarca,Çekçe,Almanca,Slovence,Đtalyanca,Romence CYRILLIC : Đngilizce,Rusça,Almanca,Çekçe,Estonyaca,Ukraynaca,Letonyaca ARABIC : West+Arapça ; FARSI : West+Farsça ; HEBREW : West+Đbranice STANDBY RECALL: ON : TV is switched on with previous settings. OFF : TV is switched on in StdBy

NOTE: Unless customer special choice, select it OFF. RECALL LAST AV: ON : Last AV memory mode active

OFF : Last AV memory mode active

NOTE: Unless customer special choice, select it OFF. FACTORY RESET : ON : Back to the Factory out adjustments option is active. OFF : Back

to the Factory out adjustments option is not active. Do not perform any adjustment unless indicated.

COMB FILTER : ON: Comb Filter features ON, OFF: Comb Filter features OFF. NOTE : Unless customer special choice, select it ON.

OPTIONS 2 MONITOR FEATURES : ON: Monitor features ON, OFF: Monitor features OFF.

NOTE : Unless customer special choice, select it OFF. HOTEL MODE : ON : Hotel TV mode is on ; OFF : Hotel TV mode is OFF. NOTE : If no customer demand it will be set as OFF HOTEL MODE VOL : It adjusts the volume level on Hotel Mode. DIMMING : It automatically comes adjusted according to the panel of the TV. Do not

perform any adjustment unless indicated.

FACTORY MODE : ON :Factory mode on ; OFF : Factory mode off RESET EEPROM : Do not perform any adjustment unless indicated. PLUG AND PLAY : Demo mode. Set it ON after all settings.

SERVICE MODE OPTIONS 2

SOURCE OPTIONS PC : ON : The feature is active, OFF : The feature is passive

TV : ON : The feature is active, OFF : The feature is passive AV : ON : AV automatic switching control active

OFF : AV automatic switching control passive

SCART 1 : ON : SCART 1 is available, OFF : SCART 1 is not available NOTE : Unless customer special choice, select it ON.

TUNING OPTIONS SOUND STANDARD : BG, DK, I, L

NOTE : Unless the product is “L” set it as “BG”. If the product is “Secam L” set it as “L”. AGC VHF 17 AGC UHF 17 AGC LPRIME 17 TUNER TYPE : Used to choose the tuner for the TV . NOTE : ON : Tuner is available, OFF : Tuner is not available ATS : ON: Autoprogramming ON at startup. OFF: Autoprogramming OFF at startup. NOTE : ON : The function is available, OFF : The function is not available AUDIO GAIN : ON : The function is available, OFF : The function is not available NOTE : Unless customer special choice, select it OFF.

ADC CALIBRATION

R GAIN G GAIN B GAIN R OFFSET G OFFSET B OFFSET

NOTE : These values are automatically stored after Factory Reset. No adjustment and checking for these values.

WHITE BALANCE

R GAIN G GAIN B GAIN

NOTE : These values are automatically stored after Factory Reset. No adjustment and checking for these values.

SAFETY PRECAUTIONS

GENERAL GUIDELINES

Always use the manufacturer’s replacement safety

1.

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.

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. P lease follow following guidance.

1. Turn the power off when do not use.

2. Change the pattern periodically.

2 - Keep clean the surface.

Please wear rubber glove when touch the surface of LCD screen. Please use soft 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.

.

Arıza tespiti için bazı gerekli transistörlerin bacak gerilimleri

T101 T100 T103

ST-BY ON Pin ST-BY ON Pin ST-BY ON Pin

3,2 0 C 3,1 0 D 0 4,5 C

0 0,6 B 1,5 3,2 G 0,7 0 B 0 0 E 3,2 3,2 S 0 0 E

T104 T105 T106

ST-BY ON Pin ST-BY ON Pin ST-BY ON Pin

0 5,2 C 3,3 1,5 G 11,5 0,4 D

3,2 1,6 B 4,8 4,8 S 1,05 12,11 G

0 0 E 3,25 3,3 D 11,5 12,11 S

T107

ST-BY ON Pin ST-BY ON Pin ST-BY ON Pin

12 0 C 0,3 4,9 C 3,2 3,2 D

0 0,7 B 0 1,9 B 3,8 3,8 G 0 0 E 0 1,3 E 2,4 2,4 S

T108 T112

Arıza tespiti için gerekebilecek referans noktalardaki osiloskop çıktıları:

Önemli NOT: Aşağıdaki osiloskop çıktıları tv de herhangi bir tuner kanalı verili iken

ölçülmüştür. TV nin ayarlarına ve kaynağa göre sinyallerde değişiklikler olabilir.

1)C199 kondansatöründen ölçülen X100 kristali osiloskop çıktısı.

2)C100 kondansatöründen ölçülebilen Y100 kristali osiloskop çıktısı

3)T105 transistörünün Gate inden ölçülebilen PWM2 sinyali

4)R132 dairencinden ölçülebilen 33V_PWM sinyali

5)R128 direncinden ölçülebilen VBLCTR sinayli (tv açıkken)

6)R126 direncindenden ölçülebilen BRIGHTNESS sinyali

7)R138 direncinden ölçülebilen STANDBY sinyali (tv açıkken)

8) R121 direncindenden ölçülebilen VDDCTRL sinyali (tv açıkken)

9) R226 direncinden ölçülebilen LED sinyali (tv standby da iken)

There is sound but not picture

when tv opened. and

backlight is working

Check if LVDS cable is

connected correctly

and undamaged.

Y E S

Check if there is panel

power at 1th and 32th

pins of S102

(3,3 yada 5V)

NO

Reconnect LVDS cable both panel and chassis side. And check if the cable damaged.

Check if there is

panel power at T100

output. And check if

VDD_CTRL signal at

high state.

NO

Panel power signal is lost.

IC100 and surrounding

components may be damaged.

Y E S

Check if the TFT-LCD is working correctly. İt' s T-

CON board or chemical

structure may be

damaged.

N O

YES

Y E S

Check if T100, T101and

surrounding components are

undamaged.

Change TFT-LCD

LVDS data is lost. Change LVDS

cable , check if RP100-RP106

resistors are undamaged. IC100 may

be damaged.

There is sound but not picture

when tv opened. and backlight

is not working

Check if cables and

connectors are placed

correctly on main and

PSU chassis

Y E S

is there 5Volts at first

pin of S110 connector?

(BL_ON/OFF)

Y E S

NO

Place the cables correctly as

seen at cable configration.

Check that if transistor T103 undamaged. And İs the signal VBLCTRL

at low condition?

Y E S

NO

There is no " open backlight "

command. IC100 or its

surrounding components may be

damaged. Check them

is the voltage at 8th pin

of IC304 (on lips modul)

at low condition?

(DIM pin)

N O

Check if T102 transistor

is undamaged and there

is BRIGTNESS signal

control.

YES

NO

Chech if transistor T103 and

connections to S110

undamaged.

IC304 and surrounding components

may be damaged. And check also

IC305 veTR301 components.

if there is no BRIGHTNESS

control, IC100 or its surrounding

component may be damaged.

Y E S

Check if T102 and S110

connector are undamage. DIM

signal must be 0V.

No sound problem

g

is there aproximately

5V dc at S106

connector. Check if

you can see sound

nal on osciloscop.

si

YES

Loudspeaker or it's cables may

be damaged.

N O

is there sound signal at

14th and 17th pins of

IC107 ?

N O

NO

YES

L123-L128 components and

connections may be damaged.

Check if there is sound

input at 20th pin of

IC107.

N O

Check if there is x(MONO)

signal output at 13th pin of

IC108 . There must be

sound signal at 11th pin if

source is tuner.

YES

Check it there is 12V

at 4th pin of IC107

N O

Check if there is

12V_SW at T106

transistor.

YES

Check if IC at mute condition.

(Between R178 ve R188 you

must see bigger than 0,3V.)

Check if IC 501 and surrounding

components are undamaged.

Check 12V_SW connections.

N

N O

Check if STANDBY signal at high state

Check MONO_AUD signal at IC 110.

IC110 or surrounding componenets

may be damaged.

(measure from base of T107). Otherwise

IC100 or surrounding components may be

O

damaged.