VESTEL MB27 Service Manual
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VESTEL MB27 Service Manual

VESTEL MB27 Service Manual

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  • Page 2: Table Of Contents

    VESTEL Service Manual 17MB27-2 02.01.2008 TABLE OF CONTENTS INTRODUCTION....................3 GENERAL DESCRIPTION...................3 POWER CONSUMPTION..................6 MICROCONTROLLER PORT CONFIGURATION.........6 SIDE BOARDS AND CONNECTORS ..............7 Keypad ............................7 Infrared & LED ...........................7 DVB-T ............................8 DVD.............................9 LVDS ............................11 Inverter............................12 IC SPECIFICATIONS ..................13 Microcontoller/Video&Audio Processor (VCT4953G) ............13 Scaler/De-interlacer (MST5x7A-M)..................16...

  • Page 3: Introduction

    VESTEL Service Manual 17MB27-2 02.01.2008 6.12 SPDIF Switch (NLAST4599) ....................28 1 INTRODUCTION The purpose of this document is to define the operation of 17MB27 chassis, capable of driving 15” and 19” TFT LCD panels. It is aimed to provide information to engineering staff to understand the operation and specs of the TV.
  • Page 4 VESTEL Service Manual 17MB27-2 02.01.2008 • Teletext • IR Control (RC5 and other customer specific protocols) • “No Ident” Timer • Child Lock • Sleep Timer • WSS (16:9/4:3 Aspect Ratio Auto Switch) Sound Features • Equalizer • FM Radio •...
  • Page 5 VESTEL Service Manual 17MB27-2 02.01.2008 • OSD Color & Transparency Selection Electrical features • 12V 4.16A DC / 100 - 240V AC adapter for 15” TV • 12V 5.83A DC / 100 - 240V AC adapter for 19” TV • <1W standby power consumption...

  • Page 6: Power Consumption

    VESTEL Service Manual 17MB27-2 02.01.2008 There are three PWM output ports. PWM0 is assigned to analog/digital dimming control for the backlight, PWM1 is used for backlight on/off and panel logic power supply on/off control and PWM2 is used to control PC/HDMI switch IC (PI5V512).

  • Page 7: Side Boards And Connectors

    VESTEL Service Manual 17MB27-2 02.01.2008 PORT SIGNAL NAME TYPE FUNCTION NAME HDMI_HP_INV HDMI hot plug signal Switching control for Mstar bus and system I2C Safety VCTI_HS VCTI composite sync output FBIN DVD_SENSE DVD module detection Vert+ TV/DVB_SW IDTV/TV I2C and AGC switch control for tuner...

  • Page 8: Dvb-T

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 5.2.1: LED board connector Pin2 and pin3 carry the control signals for the LED. Pin4 carries the infra-red signal to the microcontroller. Pin5 is used to power up the LED board. DVB-T module board DVB-T module board (tdm1300) is used to receive digital terrestrial broadcast signals.

  • Page 9: Dvd

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 5.3.2: DVB-T data connector on 17mb27 Tdm1300 board has no tuner on it. Instead, the tuner of 17mb27 is used for both analogue and digital reception. Tuner is controlled by either the 17mb27 microcontroller (VCTI), or tdm1300 board microcontroller.
  • Page 10 VESTEL Service Manual 17MB27-2 02.01.2008 12V (500mA) is sent to DVD electronic card by power cable: Figure 5.4.1: DVD module board power connection on 17mb27 Y/C and/or CVBS video, stereo audio outputs and infra-red input of DVD module board is carried on data cable: Figure 5.4.2: DVD data connector on 17mb27...

  • Page 11: Lvds

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 5.4.3: DVD_SENSE connector on 17mb27 LVDS connector MST507A-M is used for single LVDS output and MST517A-M is used for dual LVDS output on 17mb27: Figure 5.5.1: Single LVDS output connector on 17mb27...

  • Page 12: Inverter

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 5.5.2: Dual LVDS output connector on 17mb27 Panel_Vcc1 is the power input for the panel LCD module. PIN7 signal is a logic 1 or 0 signal depending on the panel type. Inverter 12V power, backlight on/off control, and dimming control signal are sent to the inverter board:...

  • Page 13: Ic Specifications

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 5.6.1: Inverter connector on 17mb27 6 IC SPECIFICATIONS Microcontoller/Video&Audio Processor (VCT4913G) VCTI49xy is composed of microcontroller, video proccessor, display and deflection processor, sound proccessor and IF blocks as shown in below figure .
  • Page 14 VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.1.1: VCTI49xy block diagram...
  • Page 15 VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.1.2: Detailed block diagram of VCTI49xy VCTI49xyl family has two package types; PSSDIP88 and PMQFP144. PSSDIP88 package is chosen because of its convenience in the soldering process. PSSDIP88 package has two versions; 1 and 2.

  • Page 16: Scaler/De-Interlacer (Mst5X7A-M)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.1.3: VCTI pinning diagram Scaler/De-interlacer (MST5x7A-M) The MST507A-M and MST517A-M are total solution graphics processing ICs for LCD displays with panel resolutions up to XGA and WXGA+ / SXGA+ respectively. They are configured with a high-speed integrated triple-ADC/PLL, a high quality display processing engine, and an integrated multi-purpose output display interface that can support all major panel interface formats.
  • Page 17 VESTEL Service Manual 17MB27-2 02.01.2008 MST has a built-in OSD generator with 291 character font programmable RAM. OSD generator supports 2/4/8 multi-color fonts, 8/16/256 color palette and 1K code attributes. MST also supports dual channel 6-bit/single channel 8-bit TTL panel interface and 6/8-bit LVDS panel interface.
  • Page 18 VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.2.2: Pinning of MST5x7A-M...

  • Page 19: Audio Amplifier (Tda2822)

    VESTEL Service Manual 17MB27-2 02.01.2008 PORT SIGNAL NAME TYPE FUNCTION NAME PWM0 AN/DIG_DIM Analog or digital dimming control PWM1 BKL_ON/OFF Backlight On/Off Control PVCC_ON/OFF Panel Logic Power On/Off control PWM2 PC/HDMI_SW O Video switching control Table 6.2.1: MST5x7A-M port allocation Audio Amplifier (TDA2822M) TDA2822M is a dual low-voltage power amplifier in 8-lead minidip package.

  • Page 20: Audio Matrix Switch (Tea6422D)

    VESTEL Service Manual 17MB27-2 02.01.2008 • Large output voltage swing Figure 6.4.1: TDA1308T block diagram Figure 6.4.2: Pinning of TDA1308T Audio Matrix Switch (TEA6422D) TEA6422D is a bus-controlled audio matrix switch in an SO28 plastic monopackage. The main features of TEA6422 D are: •...

  • Page 21: Hdmi Receiver (Anx9021)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.5.1: TEA6422D pinning HDMI Receiver (ANX9021) The ANX9021 is an advanced multimedia receiver compliant with High Definition Multimedia Interface (HDMI) Specification 1.2. HDMI is the first transport standard to unify digital video, audio, and control da ta over lowcost cables.
  • Page 22 VESTEL Service Manual 17MB27-2 02.01.2008 • Dual-channel HDMI receiver supporting link data rate up to 1.65 Gbps • HDMI 1.2, HDCP 1.1 and DVI 1.0 compliant • WideEye™ architecture for signal conditioning and equalization o support cable length up to 20m o better than 10E-12 bit error rate •...

  • Page 23: Video Switch (Pi5V512)

    VESTEL Service Manual 17MB27-2 02.01.2008 Video Switch (PI5V512) PI5V512 is a wide-bandwidth 5-port 2:1 mux/demux video switch with High-Z outputs. The main features of PI5V512 are: • High-performance, low-cost solution to switch between video sources • Wide bandwidth: 550 MHz •...

  • Page 24: Tuner (Dtt71306)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.7.2: Pin configuration of PI5V512 Figure 6.7.3: Truth table of PI5V512 Tuner (DTT71306) DTT713xx is a digital terrestrial tuner designed for reception in VHF I, VHF III and UHF, compliant with the European digital terrestrial standard ETS 300744 and CENELEC standards EN 55013 and EN 55020.

  • Page 25: Saw Filter (X6966M)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.8.1: Block diagram of DTT713xx SAW Filter (X6966M) X6966M is a SAW (Surface Acoustic Wave) band-pass filter at 36.125 MHz. Figure 6.9.1: Package of X6966M...

  • Page 26: I2C Switch (74Hct4053)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.9.2: Pin configuration of X696M 6.10 I2C Switch (74HCT4053) 74HCT4053 is a triple 2-channel analog mux/demux with a common enable input. Each multiplexer/demultiplexer has two independent inputs/outputs (nY0 and nY1), a common input/output (nZ) and three digital select inputs (S1 to S3).

  • Page 27: Audio Dac (Cs4334)

    VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.10.3: Function table of 74HCT4053 6.11 Audio DAC (CS4334) CS4334 is a 8-pin, 24-bit, 96 kHz stereo D/A converter. The CS4334 family is based on Delta-Sigma modulation, where the modulator output controls the reference voltage input to an ultra-linear analog low- pass filter.
  • Page 28 VESTEL Service Manual 17MB27-2 02.01.2008 Figure 6.11.1: Block diagram of CS4334 6.12 SPDIF Switch (NLAST4599) The NLAST4599 is an advanced high speed CMOS single pole − double throw analog switch fabricated with silicon gate CMOS technology. It achieves high speed propagation delays and low ON resistances while maintaining low power dissipation.
  • Page 29 VESTEL Service Manual 17MB27-2 02.01.2008 • Chip Complexity: 38 FETs Figure 6.12.1: Pin assignment of NLAST4599 Figure 6.12.2: Logic symbol of NLAST4599 Figure 6.12.3: Function table of NLAST4599...
  • Page 31 C124 R412 CN122 DVB_IN_R TP117 C125 R413 BACK AV HD RGB INPUT FOR MST517 SCART CVBS OUT SOFTWARE UPDATE C12V C161 F131 DVB_IN_G/Y R274 R159 VCTI_PROG_EN VCTI_PROG_EN FAVINL 470R D140 TP118 C174 C126 600R JK102 100n R414 C418 HWSDA HWSCL DVB_IN_B/C C117 F132...
  • Page 32 FLASH PROG. & VCTI DEBUG CN113 C193 S126 SD RGB INPUT FOR MST517 AUDIO LINE-OUT +3V3 100n +5V_VCTI R446 R268 S123 +3V3 C373 R388 C527 C178 C187 C528 Q128 ROUT2 GND1 GND8 100u 100n 100n 100u S124 BC848B F148 F103 HWSDA C513 R389...
  • Page 33 C512 L113 PANEL_VCC 3V3 SUPPLY FOR MST517 PC/HDMI SWITCH 1V8 SUPPLY FOR MST517 F154 R328 L115 F158 PC/HDMI_SW S131 600R C209 PC/HDMI_SW +1V8 C352 C235 600R R327 R326 100n C356 C239 Q134 C351 100n 100n BC848B R253 R370 F156 Q133 PWM2 C522 BC848B...
  • Page 34 Q193 C500 12V_STBY C255 Q181 NTGS3446 100n IRF7314 C377 U696 C428 C496 100n 12V_STBY 12V_STBY 1V8_STBY FS101 D119 D120 1V8_STBY R372 100n 12V_STBY C369 +12V_AUDIO C134 MP1593 R255 470u COMP R371 1A/63VDC 1N4001 1N4001 R235 C498 12V_STBY 100n R338 100R +1V8 FS102 C156...
  • Page 35 C479 R475 AUDIO AMPLIFIER SPEAKER OUT CN116 100n F123 LEFT+ C480 AUDIO MUTE AUDIO SWITCH C12V IN1- OUT1 RIGHT+ 100n C507 LEFT- R161 U693 F162 R284 C265 MAIN_R IN1+ D107 +12V_AUDIO 470R SDA_5V C517 TDA2822M F124 C518 C492 C520 R285 CN102 C264 IN2+...
  • Page 36 F117 +3V3_HDMI AVDD33 pin38 pin42 pin46 pin50 pin57 pin61 pin65 pin69 pin98 pin99 pin37 pin6 pin7 C439 C440 C441 C361 C360 C302 C301 C300 C299 C298 C297 C296 C295 C294 C293 C292 C291 C290 100n 100n 100n 100n 100n 100n 100n 100n 100n...
  • Page 37 CN121 C538 D138 C351 C239 F158 R134 C415 C346 F128 VESTEL R133 F126 C345 C414 CN123 R209 C121 S112 CN114 17MB27-2 C356 R445 C211 S128 R221 R429 C352 S120 R312 R316 D145 R430 Q122 F154 S119 Q116 C547 R431 R315...
  • Page 38 TP117 TP124 TP125 TP119 TP123 TP118 TP160 TP126 TP127 TP161 TP139 TP149 TP153 TP131 TP129 TP130 TP167 TP120 TP145 TP148 TP166 TP144 TP121 TP146 TP143 TP147 TP132 TP154 TP155 TP101 TP102 TP122 TP103 TP104 TP110 TP162 TP133 TP163 TP142 TP164 TP165 TP111 TP113...
  • Page 42 CN107 CN121 CN101 CN108 CN122 CN127 CN126 S112 D137 Q111 C547 C546 D145 C415 S120 CN123 R134 CN114 S119 R221 CN120 F128 C346 C351 D138 C356 R429 C235 C553 R312 R445 C413 R133 F126 F104 Q120 R179 R487 R177 R430 C239 C214 C172...

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