VESTEL 17MB08P Service Manual
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VESTEL 17MB08P Service Manual

26 inch tft
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26" TFT

SERVICE MANUAL

(17MB08P)
RELEASE DATE:
PREPARED BY:
04.03.2005
VESTEL ELECTRONICS

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Summary of Contents for VESTEL 17MB08P

  • Page 1: Service Manual

    26” TFT SERVICE MANUAL (17MB08P) RELEASE DATE: 04.03.2005 PREPARED BY: VESTEL ELECTRONICS...
  • Page 2 THIS PAGE IS INTENTIONALLY LEFT BLANK...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ............................1 TUNER..............................1 IF PART (TDA9886) ..........................1 MULTI STANDARD SOUND PROCESSOR .................... 2 VIDEO SWITCH TEA6415 ........................2 AUDIO AMPLIFIER STAGE WITH TPA3002D2 ..................2 POWER ..............................2 MICROCONTROLLER SDA55XX......................3 8.1. General Features..........................3 8.2.
  • Page 4 12.11. TDA1308 ............................16 General Description ....................... 16 12.11.1. Features ..........................16 12.11.2. Pinning ............................ 16 12.11.3. 12.12. PI5V330............................17 General description ....................... 17 12.12.1. Features ..........................17 12.12.2. Pin Descriptions ........................17 12.12.3. 12.13. GM6015............................18 General description ....................... 18 12.13.1.

  • Page 5: Introduction

    1. INTRODUCTION 26” TFT TV is a progressive TV control system with built-in de-interlacer and scaler. It uses a 1280*768 panel with 15:9 aspect ratio.The TV is capable of operation in PAL, SECAM, NTSC (playback) colour standards and multiple transmission standards as B/G, D/K, I/I’, and L/L’ including German and NICAM stereo.

  • Page 6: Multi Standard Sound Processor

    4. MULTI STANDARD SOUND PROCESSOR The MSP34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip.

  • Page 7: Microcontroller Sda55Xx

    8. MICROCONTROLLER SDA55XX 8.1. General Features • Feature selection via special function register • Simultaneous reception of TTX, VPS, PDC, and WSS (line 23) • Supply Voltage 2.5 and 3.3 V • ROM version is used. 8.2. External Crystal and Programmable Clock Speed •...

  • Page 8: Acquisition Features

    8.7. Acquisition Features • Multistandard Digital Data Slicer • Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) • Four Different Framing Codes Available • Data Caption only limited by available Memory • Programmable VBI-buffer • Full Channel Data Slicing Supported •...

  • Page 9: Ic Descriptions And Internal Block Diagram

    12. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM LM1117 TDA9886 LM2576 TDA1308T LM317T PI5V330 ST24LC21 GM6015 TEA5114A AD9883A TEA6415 MC141585 VPC3230D MC34063 SDA55XX MSP3410G TPA3002D2 DS90C385 NDS8947 12.1. LM1117 12.1.1. General Description The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. It has the same pin-out as National Semiconductor’s industry standard LM317.

  • Page 10: Lm2576

    12.2. LM2576 12.2.1. General Description The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step–down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

  • Page 11: Lm317T

    12.3. LM317T 12.3.1. Description The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage.

  • Page 12: St24Lc21

    12.4. ST24LC21 12.4.1. Description The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM), organized by 8 bits. This device can operate in two modes: Transmit Only mode and I C bidirectional mode. When powered, the device is in Transmit Only mode with EEPROM data clocked out from the rising edge of the signal applied on VCLK.

  • Page 13: Tea5114A

    12.5. TEA5114A 12.5.1. General description This integrated circuit provides RGB switching allowing connections between peri TV plug, internal RGB generator and video processor in a TV set. The input signal black level is tied to the same reference voltage on each input in order to have no differential voltage when switching two RGB generators.

  • Page 14: Tea6415

    12.6. TEA6415 12.6.1. General description The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of synch.

  • Page 15: Vpc3230D

    12.7. VPC3230D 12.7.1. General Description The VPC 323xD is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz and 100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 331x) and/or it can be used with 3rd-party products.
  • Page 16 SUPPLYD Ground, LLC Circuitry Picture Bus Luma (MSB) Picture Bus Luma Picture Bus Luma Picture Bus Luma SUPPLYD Ground, Luma Output Circuitry SUPPLYD Supply Voltage, Luma Output Circuitry SUPY Picture Bus Luma Picture Bus Luma Picture Bus Luma Picture Bus Luma (LSB) Picture Bus Chroma (MSB) Picture Bus Chroma Picture Bus Chroma...

  • Page 17: Sda55Xx (Sda5550)

    12.8. SDA55XX (SDA5550) 12.8.1. General description The SDA55XX is a single chip teletext decoder for decoding World System Teletext data as well as Video Programming System (VPS), Program Delivery Control (PDC), and Wide Screen Signalling (WSS) data used for PAL plus transmissions (Line 23). The device also supports Closed caption acquisition and decoding.

  • Page 18: Tpa3003D2

    12.9. TPA3003D2 12.9.1. General Description The TPA3002D2 is a 9-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo speakers. The TPA3002D2 can drive stereo speakers as low as 8 &. The high efficiency of the TPA3002D2 eliminates the need for external heatsinks when playing music. 12.9.2.

  • Page 19: Tda9885/86

    12.10. TDA9885/86 12.10.1. General description The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL. The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation including sound AM and FM processing. Both devices can be used for TV, VTR, PC and set-top box applications.

  • Page 20: Tda1308

    12.11. TDA1308 12.11.1. General Description The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications.

  • Page 21: Pi5V330

    12.12. PI5V330 12.12.1. General description Pericom Semiconductor’s PI5V series of mixed signal video circuits are produced in the Company’s advanced CMOS low-power technology, achieving industry leading performance. The PI5V330 is a true bidirectional Quad 2-channel multiplexer/demultiplexer that is recommended for both RGB and composite video switching applications.

  • Page 22: Gm6015

    12.13. GM6015 12.13.1. General description The Genesis Microchip 6015RD1 LCD TV reference board is a complete display processor for LCD, PDP and LCOS based televisions. The reference board demonstrates the processing capabilities of the Genesis Microchip gm6015 television controller IC. The gm6015 IC is a full-featured, dual-channel video processor with Genesis industry leading Crystal Ciema Plus video scan conversion.

  • Page 23: Ad9883A

    12.14. AD9883A 12.14.1. General description The AD9883A is a complete 8-bit, 140 MSPS monolithic analog interface optimized for capturing RGB graphics signals from personal computers and workstations. Its 140 MSPS encode rate capability and full power analog bandwidth of 300 MHz supports resolutions up to SXGA (1280 1024 at 75 Hz).
  • Page 24 DATA OUTPUTS Data Output, RED Channel Data Output, GREEN Channel GREEN Data Output, BLUE Channel BLUE The main data outputs. Bit 7 is the MSB. The delay from pixel sampling time to output is fixed. When the sampling time is changed by adjusting the PHASE register, the output timing is shifted as well.
  • Page 25 pulses during the vertical interval. The COAST signal is generally not required for PC-generated signals. The logic sense of this pin is controlled by Coast Polarity (register 0FH, Bit 3). When not used, this pin may be grounded and Coast Polarity programmed to 1, or tied HIGH (to VD through a 10 k resistor) and Coast Polarity programmed to 0.

  • Page 26: Mc141585

    12.15. MC141585 12.15.1. General description This is a high performance HCMOS device designed to interface with a micro controller unit to allow colored symbols or characters to be displayed onto a LCD monitor. Because of the large number of fonts, 512 fonts including 496 standard fonts and 16 multi-color fonts, LMOSD2-16 is suitable to be adopted for the multi-language monitor application especially.
  • Page 27 NC (Pin 3) No connection. (Pin 4) This is the +5V power pin for the chip. HSYNC (Pin 5) This pin inputs a horizontal synchronize signal. It is negative polarity by default. The leading edge of HSYNC synchronizes its internal horizontal timing. The maximum input ratio between PIXin/HSYNC should not greater than 1580 for displaying 12X18 font matrix.

  • Page 28: Mc34063

    12.16. MC34063 12.16.1. Description The MC34063A Series is a monolithic control circuit containing the primary functions required for DC–to– DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step–Down and Step–Up and Voltage–Inverting applications with a minimum number of external components.

  • Page 29: Msp34X0G (Msp3410G)

    12.17. MSP34X0G (MSP3410G) Multistandard Sound Processor Family 12.17.1. Introduction The MSP 34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip.

  • Page 30: Pin Connections

    • Spatial effect for loudspeaker channel • Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs • Complete SCART in/out switching matrix • Two I S inputs; one I S output • Dolby Pro Logic with DPL 351xA coprocessor •...
  • Page 31 SC3_IN_L SCART 3 input, left ASG4 AHVSS Analog Shield Ground 4 SC4_IN_R SCART 4 input, right SC4_IN_L SCART 4 input, left LV or AHVSS Not connected AGNDC Analog reference voltage AHVSS Analog ground AHVSS Analog ground Not connected Not connected CAPL_M Volume capacitor MAIN AHVSUP...

  • Page 32: Ds90C385

    12.18. DS90C385 12.18.1. General Description The DS90C385 transmitter converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted.

  • Page 33: Nds8947

    12.19. NDS8947 12.19.1. General Description These P-Channel enhancement mode power field effect transistors are produced using Fairchild's proprietary, high cell density, DMOS technology. This very high density process is especially tailored to minimize on-state resistance and provide superior switching performance. These devices are particularly suited for low voltage applications such as notebook computer power management and other battery powered circuits where fast switching, low in-line power loss, and resistance to transients are needed.

  • Page 34: Service Menu Settings

    13. SERVICE MENU SETTINGS All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the main menu by pressing “M” button and then press the digits 4, 7, 2 and 5 respectively.

  • Page 35: Options Menu Settings

    13.2. OPTIONS MENU SETTINGS In order to enter Options menu, move the cursor to Options… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen. Options... First APS A.P.S. Headphone Subwoofer Lineout Dolby prologic Equalizer...
  • Page 36 Options... Equalizer L’ FM Prs Avl On 0 17 : O ff On/Off Enables / disables I Standard. On/Off Enables / disables L Standard. L’ On/Off Enables / disables L’ Standard. On/Off Enables / disables AUS Standard. On/Off Enables / disables NZ Standard. On/Off Enables / disables NM Standard.
  • Page 37 Nicam Prs Avl On Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max. Value: 00FF 00255 Scart Prs Avl On Adjusts the Scart Prescaler value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max.
  • Page 38 On/Off Enables / disables Automatic Volume Levelling feature. Top TXT On/Off Enables / disables TopText feature. Fast TXT On/Off Enables / disables FastText feature. TXT Lang Switches between Teletext Language Groups. Min. Value: 0000 00000 Max. Value: 0004 00004 IF Freq Adjusts the IF Frequency value.
  • Page 39 On/Off Enables / disables PC. MENU On/Off Enables / disables semi-transparent MENU. Enables / disables teletext MIX mode. Enable: 00000001 Disable: 00000000 HOTEL MODE Enables /disables Hotel mode feature. Enable: 00000001 Disable: 00000000 Not used. OTHER Adjusts the standard value for APS for Eastern European countries. The values are: 0: BG standard 1: DK standard Not used.

  • Page 40: Aps Wss Test Menu

    13.3. APS WSS TEST MENU In order to enter Aps Wss Test menu, move the cursor to Aps Wss Test parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen. Aps Wss Test Programme Search Pdc Format 1...

  • Page 41: Block Diagram

    14. BLOCK DIAGRAM AG6TC 86S9 TTU"&WA# T9S6H T""W #T%#"!"!C T!$W T6HTVIB PIPAA ""W  !W H@IV @`Q69 86S9 QPX@S TVQQG` @@QSPH 8W7TfU@G@U@YU HD8SP8PIUSPGG@S !#G8 %7 PT9Ã T96$$$H ""W HD8SP8CDQ B@I@S6UPS HD8SPI6T HUW "Q $WfQ6I@G H`TPI 8W99f!$ T86G@S $WTU7` 9@DIU@SG68@S BH% $ B@I@TDT 7U%$%ÃTDBI6G 'Ã7DUÃ96U6...

  • Page 42: Circuit Diagrams

    15. CIRCUIT DIAGRAMS 26” TFT TV Service Manual 01/03/2005...
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