VESTEL AK30 Service Manual
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VESTEL AK30 Service Manual

VESTEL AK30 Service Manual

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Summary of Contents for VESTEL AK30

  • Page 2: Table Of Contents

    CONTENTS A. ANALOG PART SAFETY PRECAUTIONS: ............................3  TV set switched off........................3  Measurements ...........................3 PERI-TV SOCKET ................................3  SCART 1 ..........................3  SCART 2 ..........................3 1. INTRODUCTION ..............................4  2. SMALL SIGNAL PART WITH STV2248 .................4  2.1 Vision IF amplifier......................4 ...

  • Page 3: Safety Precautions

    DO NOT CHANGE ANY MODULE UNLESS THE SET IS SWITCHED OFF The mains supply part of the switch mode power supply’s transformer is live. Use an isolating transformer. The receiver complies with the safety requirements. SAFETY PRECAUTIONS: The service of this TV set must be carried out by qualified persons only. Components marked with the warning symbol on the circuit diagram are critical for safety and must only be replaced with an identical component.

  • Page 4: Introduction

    15 - 19 CVBS output 1Vpp / 75ohm 16 - 20 CVBS input 1Vpp / 75ohm 17 Ground CVBS output 21 Ground 18 Ground CVBS input 1. INTRODUCTION 11AK30 is a 90° chassis capable of driving 20”/21” tubes at the appropriate currents. The chassis is capable of operating in PAL, SECAM and NTSC standards.

  • Page 5: Video Switching

    condition has been found. De-emphasis output signal amplitude is independent of the TV standard and has the same value for a frequency deviation of ±25 kHz at the 4.5 MHz standard and for a deviation of ±50 kHz for the other standards. When the IF circuit is switched to positive modulation the internal signal on de-emphasis pin is automatically muted.

  • Page 6: Rgb Output Circuit

    ACC s are based on digital systems and do not need external capacitor. All chroma filters are fully integrated and tuned via a PLL locked on Xtal VCO signal. A second PLL is used for accurate fine-tuning of the SECAM bell filter. This tuning is achieved during the frame blanking.

  • Page 7: Tuner

    3. TUNER Either a PLL or a VST tuner is used as a tuner. UV1316 (VHF/UHF) is used as a PLL tuner. For only PALM/N, NTSC M applications UV 1336 is used as the PLL tuner. UV 1315 (VHF/UHF) is used as a VST Tuner. Channel coverage of UV1316: OFF-AIR CHANNELS CABLE CHANNELS...

  • Page 8: 4- Digital Tv Sound Processor Msp34X0

    Passive components are used for the solution of power factor correction. 10. POWER CARD Power cards are used to supply DC voltages required for DVD box inside AK30 TV. 11PW04-3 card produces +3.3V, +2.5V, +5V DC voltages for DVD boxes.

  • Page 9: Rgb Switching Card 11Rgb30-3

    11. RGB SWITCHING CARD 11RGB30-3 RGB Switching Card is used to switch R_EXT, G_EXT, B_EXT and R_DVDorDVB, G_DVDorDVB, B_DVDorDVB between each other to provide one R_OUT, G_OUT, B_OUT for output. PI5V330 Low On-Resistance Wideband/Video Quad 2-Channel Mux/DeMux IC is used to ensure switching operation.

  • Page 10: St92195

     SAW FILTERS G1975M, K2966M, K2962M, L9653M, G3962M, G9353M, K3958M, K9356M, K9656M, K6263K, K9652M, M1962M, M3953M, M9370M ST92195 The ST92195 is a member of the ST9+ family of micro-controllers, completely developed and produced by SGS-THOMSON Microelectronics using a proprietary n-well HCMOS process. The nucleus of the ST92195 is the advanced Core, which includes the Central Processing Unit (CPU), the ALU, the Register File and the interrupt controller.

  • Page 11: Stv224X

    STV224X Video processor: The STV2246/2247/2248 are fully bus controlled ICs for TV including PIF, SIF, luma, Chroma and deflection processing. Used with a vertical frame booster (TDA1771 or TDA8174 for 90° chassis, STV9306 for 110° chassis), they allow the design of multi-standard (BGDKIMNLL, PAL/ SECAM/NTSC) sets with very few external components and no manual adjustments.

  • Page 12: Uv1315, Uv1316, Uv1336,Tecc2949Pg40B,Taea-G0Xxd ,Chongqing Qingjia

    UV1315, UV1316, UV1336,TECC2949PG40B,TAEA-G0XXD ,ChongQing QingJia General description of UV1315: The UV1315 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L’, I and I’.
  • Page 13 PINNING PIN VALUE Gain control voltage (AGC) :4.0V, Max:4.5V Tuning voltage I²C-bus address select :Max:5.5V I²C-bus serial clock :Min:-0.3V, Max:5.5V I²C-bus serial data :Min:-0.3V, Max:5.5V Not connected PLL supply voltage :5.0V, Min:4.75V, Max:5.5V ADC input Tuner supply voltage :33V, Min:30V, Max:35V Symmetrical IF output 1 Symmetrical IF output 2 General description of UV1336:...
  • Page 14 TECC2949PG40B SAMSUNG TUNER Features: • CCIR standart receiving system •Off- air channels ,s-cable channels , 3 band (UHF,VHFhigh and low) • PAL FST tuner •Tuning system :Frequency synthesized type Pinning: 1- AGC AGC Voltage supply (Typ:5V Max:4.5V) 2- NC No pin 3- SAS Adress select 4- SCL...
  • Page 15 ChongQing QingJia Electronical Co.Tuner •PAL BG Receiving system •PLL tuning system •Off- air channels ,s-cable channels , 3 band (UHF,VHFhigh and low) Pinning: 1- AGC AGC Voltage supply (Typ:5V Max:4.5V) 2- NC No pin 3- SAS Adress select 4- SCL Serial clock 5- SDA Serial data...

  • Page 16: Tda7266/Tda7266L

    TDA7266/TDA7266L General Description of TDA7266L The TDA7266L is a mono bridge amplifier specially designed for TV and Portable Radio applications. Requires very few external components WIDE SUPPLY VOLTAGE RANGE (3-18V) MINIMUM EXTERNAL COMPONENTS – NO SVR CAPACITOR – NO BOOTSTRAP –...

  • Page 17: Tda8174

    S-GND N.C. N.C. OUT2 - OUT2+ TDA8174AW INDEPENDENT VERTICAL AMPLITUDE ADJUSTEMENT. BUFFER STAGE. POWER AMPLIFIER .FLYBACKGENERATOR .THERMALPROTECTION .INTERNAL REFERENCE VOLTAGE DECOU-PLING General Description: TDA8174Aand TDA8174AWare a monolithic integrated circuits. It is a full performance and very efficient vertical deflection circuit intended for direct drive of a TV picture tube in Color and B & W television as well as in Monitor and Data displays.

  • Page 18: Mc44608

    · Single supply voltage of 200 V · Internal reference voltage of 2.5 V · Fixed gain of 50 · Black-Current Stabilization (BCS) circuit with voltage window from 1.8 to 6 V and current window from -100 mA to 10 mA ·...

  • Page 19: Msp34X0G

    GreenLine Controller • Pulsed mode techniques for a very high efficiency low power mode • Lossless startup • Low dV/dT for low EMI radiations PINNING PIN VALUE Demagnetization Zero cross detection voltage: 50 mV typ. I Sense Over current protection voltage 1V typ. Control Input Min: 7.5V Max.: 18V Ground...

  • Page 20: 24C08

     Digital interface to process ADR (ASTRA Digital Radio) together with DRP 3510A  Performance of all de-emphasis systems including adaptive Wegener Panda 1 without external components or controlling  Digitally performed FM identification decoding and de-matrixing  Digital base-band processing: volume, bass, treble, 5-band equalizer, loudness, pseudo-stereo, and base-width enlargement ...

  • Page 21: Tda1308

    TDA1308 Features:  Wide temperature range  Excellent power supply ripple rejection  Low power consumption  Short-circuit resistant  High performance  high signal-to-noise ratio  low distortion PINNING PIN VALUE 1. Output A (Voltage swing) :Min:0.75V, Max:4.25V 2. Inverting input A :Vo(clip):Min:1400mVrms 3.

  • Page 22: Saw Filters

    – 16-pin 150-mil wide plastic SOIC (W) – 16-pin 150-mil wide plastic QSOP (Q) Saw filter’s list: VIDEO AUDIO PAL BG G1975M PSBG DK K2966M PAL II' J1981 PSBGDKK' II' K2966M PSBGDKK' LL' K2962M L9653 VIDEO AUDIO PAL BG G3967M G9353M PAL II' K3958M...

  • Page 23: Service Menu Adjustments

    To select adjust parameters, use  or  buttons. To change the selected parameter, use or  buttons. Selected parameter will be highlighted. Entire service menu parameters of AK30 CHASSIS are listed below. For some of parameters the default values are given in this document also.
  • Page 24 IF Adjustments: IF1: IF Coarse Adjustment IF2: IF Fine Adjustment IF3: IF Coarse Adjustment for L-prime IF4: IF Fine Adjustment for L-prime IF NEGATIVE ADJUSTMENT (WITHOUT L’ SYSTEMS) Set the video pattern to a PAL colour bar pattern with frequency 38.9 MHz. Apply this IF signal to PIN-10 and PIN-11 of tuner.
  • Page 25 Min. Value: Max. Value: Recommended Value: Automatically, described above. SCREEN ADJUSTMENT: (FBT Screen) SCREEN ADJ.POT. Enter service menu by pressing “MENU” and “4, 7, 2, 5” or press the mute and info buttons at the same time from remote controller. Then press yellow button to disable vertical scan. Adjust horizontal line via screen pot.
  • Page 26 Min. Value: Max. Value: Recommended Value : RGBH: RGB Mode Horizontal Shift Offset Enter a RGB circle test pattern via video inputs. Force the TV to RGB mode by pressing AV button from remote controller. Change RGB Horizontal Position till the picture is horizontally centered.
  • Page 27 To select geometry adjust parameters, use  or  buttons. To change the selected parameter, use or buttons. Selected parameter will be highlighted. Entire geometry menu parameters of AK30 CHASSIS are listed below. VSIZ: Vertical Size for 50 Hz Enter a PAL B/G circle test pattern via RF. Change VSIZ (Vertical Size) until horizontal black lines on both the upper and lower part of the test pattern become very close to the upper and lower horizontal sides of picture tube and nearly about to disappear.
  • Page 28 Min. Value: Max. Value: Recommended Value for 4:3 mode Recommended Value for 16:9 mode VSCO: Vertical S-Correction for 50 Hz Not Used For This Model. VCCO: Vertical Corner Correction for 50 Hz Not Used For This Model. HSIZ: Horizontal Size for 50 Hz Not Used For This Model.
  • Page 29 50 HZ. 4:3 GEOMETRY ADJ. 60 HZ. 4:3 GEOMETRY ADJ. 50 HZ. 16:9 GEOMETRY ADJ. WHITE BALANCE ADJUSTMENT The following three parameters are used to make white balance adjustment. To do this, use a Colour Analyzer. Using WR (White point adjust for RED), WG (White point adjust for GREEN), WB (White point adjust for BLUE) parameters, insert the + sign in the square which is in the middle of the screen.
  • Page 30 Max. Value: Default Value : WB: White Point Adjustment for BLUE Use this parameter to set the strength of BLUE in White. Min. Value: Max. Value: Default Value : BR: Bias for RED Use this parameter to set the strength of RED in BLACK. Min.
  • Page 31 AVL: Automatic Volume Control In order to make AVL ON or AVL OFF, press the RED button while in service menu. If AVL is ON, the AVL string occurs on the bottom right of the service menu screen. If AVL is OFF, no string occurs about AVL on the bottom of the service menu. FMP1: FM Prescaler when AVL is OFF Min.
  • Page 32 Recommended Value: SCP2: SCART Prescaler when AVL is ON Min. Value: Max. Value: Recommended Value: SEC2: SECAM Prescaler when AVL is ON Min. Value: Max. Value: Recommended Value:...
  • Page 33 Rev No : Date 0 2 . 1 1 . 0 5 ELEKTRONİK SAN. VE TİC. A.Ş. Page Tuner Settings B1 H -F1H B1 L-F1L B2 H -F2H B2 L -F2L VHF HIGH VHF LOW UHF high UHF low crossover high crossover low crossover high crossover low...
  • Page 34 Ref No : Date ELEKTRONİK SAN. VE TİC. A.Ş. 0 2 . 1 1 . 0 5 Page 0000 1100 0011 0010 0001 1110 0000 0010 0000 0001 0000 0010 0000 0100 1000 1110 PHILIPS MK4 0000 1011 0101 0010 0001 1101 0000 0010 0000 0010...
  • Page 35 Ref No : Date ELEKTRONİK SAN. VE TİC. A.Ş. 0 2 . 1 1 . 0 5 Page Tuner Settings ( NTSC 60 Hz ) Ana Tuner PHILIPS UV1336A SAMSUNG TECC1040SG32K SAMSUNG TECC1940PG38W Form Rev No: 00 Form No: DENEME...

  • Page 36: Options

    SAYFA NO : UMB BÖLÜMÜ (SERVICE & OPT. SETTINGS) 31.08.2006 DEĞ. NO: DEĞ. TAR : AK30 (T3X) STANDARD TV DESCRIPTION OP1 – SCART OPTIONS DESCRIPTION OP2 – TV STANDART OPTIONS 1, Wide Line Blanking is active. 1 – 3-button keyboard (V-, P+, V+) BIT-7 “...
  • Page 37 04.UMB.13b DÖKÜMAN NO : SERVİS VE OPSIYON AYARLARI ELEKTRONİK SAN. VE TİC..A.Ş. 11 / 15 TARİH : SAYFA NO : UMB BÖLÜMÜ (SERVICE & OPT. SETTINGS) 31.08.2006 DEĞ. NO: DEĞ. TAR : 0, Channel table based search 0 – Solid Menu background for menu (No meaning for VST Tuner) 1 –...
  • Page 38 1 - AK37 adjustment values are valid 1, WHITE_INSERTION_FORCED is available BIT-5 Value should be “0” BIT-5 Value should be “0” 0 - AK30 adjustment values are valid 0, WHITE_INSERTION_FORCED is not available 1 - ZOOM Mode is available 1, AVL_DECAY_TIME_CHANGE is available BIT-4 BIT-4 Value should be “0”...

  • Page 39: General Block Diagram Of 11Ak30

    GENERAL BLOCK DIAGRAM of 11AK30 MSP 34X0D/G STEREO SOUND PLL/VST TUNER UV1315/1316 TDA7266/7266L HP. AMP. TDA1308 SERVICE MONO CONNECTOR ST92195 TDA5112A STV2248C MICRO VIDEO KEYPAD CONTROLLER PROCESSOR IR SENSOR TDA8174AW VIDEO SWITCHING CIRCUITS 115V SMPS +12V AUD. SCART2 SCART1 FAV/BAV SVHS HORIZONTAL 44608 DRIVE...
  • Page 40 CIRCUIT 11RGB30-3 DIAGRAMS OF 11AK30...
  • Page 41 POWER CARD 11PW04-3...
  • Page 42 AK30A14...
  • Page 49 AK30S-1...
  • Page 56 DVD7500 AK30 TVDVD DVD MODULE Hardware Specification...
  • Page 57 1. GENERAL DESCRIPTION 1.1 MT1389D The MT1389D Progressive Scan DVD-Player Combo Chip is a single-chip MPEG video decoding chip that integrates audio/video stream data processing, TV encoder, four video DACs with Macrovision. copy protection, DVD system navigation, system control and housekeeping functions. The features of this chip can be listed as follows: General Features: •...
  • Page 58 2. SYSTEM BLOCK DIAGRAM and MT1389D PIN DESCRIPTION 2.1 MT1389D PIN DESCRIPTION...
  • Page 67 2.1 SYSTEM BLOCK DIAGRAM A sample system block diagram for the MT1389D DVD player board design is shown in the following figure: 3. AUDIO OUTPUT The MT1389D supports two-channel and six-channel analog audio output. In a system configuration with six analog outputs, the front left and right channels can be configured to provide the stereo (2 channel) outputs and Dolby Surround, or the left and right front channels for a 5.1 channel surround system.
  • Page 68 5 .VIDEO INTERFACE 5.1 Video Display Output The video output section controls the transfer of video frames stored in memory to the internal TV encoder of the MT1389D. The output section consists of a programmable CRT controller capable of operating either in Master or Slave mode.
  • Page 69 frame sync (TWS) are clocked out of the MT1389D based on the audio transmit bit clock (TBCK). Audio receive bit clock (RBCK) is used to clock in audio data in (RSD) and audio receive frame sync (RWS). 10. CONNECTORS CON1: POWER CONNECTOR PINS DESCRIPTION +12V...

  • Page 70: Pins Description

    P4: S/PDIF DIGITAL AUDIO SOCKET PINS DESCRIPTION S/PDIF ------ SOFTWARE UPDATE Universal Service Password The Universal Service Password for Parental Level is ‘1369’. Version Page (Hidden Menu) To display Version Page: •Open DVD mode on TV. • Press MENU key when there is no disc playback. Setup Menu is displayed. •...
  • Page 71 Examples: I2KN1.bin = Internal 2-channel Audio-DAC, Samsung S71, New small VFD, Language Group 1 P6NN4.bin = PCM1606, Sony KHM310, New small VFD, Language Group 4 Note: Update CD should have no volume ID. CD Update Procedure 1. Any Player can be updated automatically with Update CD which contains proper files 2.
  • Page 72 POWER CARD...
  • Page 73 Mainboard...
  • Page 78 DVD7200 AK30 TVDVD DIVX MODULE Hardware Specification...
  • Page 79 1. GENERAL DESCRIPTION 1.1 MT1389E The MT1389E Progressive Scan DVD/DIVX-Player Combo Chip is a single-chip MPEG video decoding chip that integrates audio/video stream data processing, TV encoder, four video DACs with Macrovision. copy protection, DVD system navigation, system control and housekeeping functions. The features of this chip can be listed as follows: General Features: •...
  • Page 80 2. SYSTEM BLOCK DIAGRAM and MT1389E PIN DESCRIPTION 2.1 MT1389E PIN DESCRIPTION...
  • Page 89 2.1 SYSTEM BLOCK DIAGRAM A sample system block diagram for the MT1389E DVD player board design is shown in the following figure: 3. AUDIO OUTPUT The MT1389E supports two-channel and six-channel analog audio output. In a system configuration with six analog outputs, the front left and right channels can be configured to provide the stereo (2 channel) outputs and Dolby Surround, or the left and right front channels for a 5.1 channel surround system.
  • Page 90 5 .VIDEO INTERFACE 5.1 Video Display Output The video output section controls the transfer of video frames stored in memory to the internal TV encoder of the MT1389E. The output section consists of a programmable CRT controller capable of operating either in Master or Slave mode.
  • Page 91 112, 128, 192, 256, 384, and 512 sampling frequency formats, where sampling frequency Fs is usually 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, or 192 kHz. The audio samples for the I2S transmit interface can be 16, 18, 20, 24, and 32-bit samples. For Linear PCM audio stream format, the MT1389E supports 48 kHz and 96 kHz.
  • Page 92 C_FS P4: S/PDIF DIGITAL AUDIO SOCKET PINS DESCRIPTION S/PDIF ------ SOFTWARE UPDATE Universal Service Password The Universal Service Password for Parental Level is ‘1369’. Version Page (Hidden Menu) To display Version Page: •Open DVD mode on TV. • Press MENU key when there is no disc playback. Setup Menu is displayed. •...
  • Page 93 VFD Type: N = New small VFD / T = TV DVD / 7 = No VFD / 9 = 2900 FP OPU Type: K = Samsung S71 / N = Sony KHM310 DAC Type: I2 = Internal 2-ch / C6 = CS4360 / P6 = PCM1606 Examples: I2KN1.bin = Internal 2-channel Audio-DAC, Samsung S71, New small VFD, Language Group 1 P6NN4.bin = PCM1606, Sony KHM310, New small VFD, Language Group 4...
  • Page 94 POWER CARD...
  • Page 95 Mainboard...

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