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VESTEL MB211 Service Manual
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VESTEL MB211 Service Manual

VESTEL MB211 Service Manual

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MB211 IDTV
SERVICE MANUAL

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Jonathan Green
June 23, 2025

I seem to have lost avcess to some of my tv channels how can i get them back. I think the cause is somebody playing around with the settings

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Summary of Contents for VESTEL MB211

  • Page 1 MB211 IDTV SERVICE MANUAL...
  • Page 2 Table of Contents INTRODUCTION ..............................3 T/T2/C/A Tuner (U1) .............................. 4 S/S2 TUNER (U142) .............................. 5 AUDIO AMPLIFIER STAGES ..........................7 A. MAIN AMPLIFIER (U62)(6-8-10 W option) ......................... 7 B. MAIN AMPLIFIER (U91)(2.5 W optIon) ........................10 C. HEADPHONE AMPLIFIER (U85) ..........................11 POWER STAGE..............................
  • Page 3 G. No Sound Problem ..............................38 H. Standby On/Off Problem ............................39 İ. No SIgnal Problem ..............................40 ServIce Menu SettIngs ............................42 GENERAL BLOCK DIAGRAM ......................... 47...
  • Page 4 1. INTRODUCTION 17MB211 main board is driven by Novatek SOC. This IC is a single chip iDTV solution which compliants with variety ATV as NTSC, PAL and SECAM, and DTV standards as ISDB-T, DVB-T/-T2/-C/-S/-S2, ITU-T J.83B, ATSC, integrates DTV and multi-media AV decoder, SIF demodulator, and support A/V post- processing.
  • Page 5 2. T/T2/C/A TUNER (U1) Description The MxL661 is a highly integrated low-power silicon tuner IC that targets all global and digital cable standards. Broadband input filtering and channel filtering have been completely integrated on-chip. This integration enables a compact design resulting in small footprint, low Bill-Of-Material (BOM) cost, and low- power consumption.
  • Page 6 Figure: Pin description Table: Pin functions 3. S/S2 TUNER (U142) Description The AV2018 is a highly integrated silicon tuner for DVB-S2 standard. It integrates a synthesizer, crystal oscillator, LDO, loop through path, and a direct conversion receiver including LNA, RF variable gain amplifiers, Mixer, programmable channel filter, and PGA.
  • Page 7 blocks to achieve best performance according to the control signal voltage. The embedded automatic calibration mechanism provides precise control of channel filter bandwidth and DC offset, no additional calibration procedure is required. Features  Input RF Frequency: 950Mhz to 2150Mhz ...
  • Page 8 Figure 4: Functional Block Diagram Table4: Absolute Maximum Ratings 4. AUDIO AMPLIFIER STAGES A. MAIN AMPLIFIER (U62)(6-8-10 W OPTİON) Description AD82587D is a digital audio amplifier capable of driving a pair of 8 ohm, 20W or a single 4ohm, 40W speaker, both which operate with play music at a 24V supply without external heat-sink or fan requirement.
  • Page 9 o 32kHz / 44.1kHz / 48kHz and o 64kHz / 88.2kHz / 96kHz and o 128kHz/176.4kHz/192kHz  System clock = 64x, 128x, 256x, 384x, 512x, 768x,1024x Fs o 256x~1024x Fs for 32kHz / 44.1kHz / 48kHz o 128x~512x Fs for 64kHz / 88.2kHz / 96kHz o 64x~256x Fs for 128kHz /176.4kHz/192kHz ...
  • Page 10 Figure: Pin description Figure: Functional Block Diagram Table: Absolute Maximum Ratings Table: Recommended Operating Conditions...
  • Page 11 B. MAIN AMPLIFIER (U91)(2.5 W OPTION) Description The AD52010 is a 3.0W stereo, filter-less class-D audio amplifier. Operating with 5.0V loudspeaker driver supply, it can deliver 3.0W output power into 4 ohm loudspeaker within 10% THD+N or 2.6W at 1% THD+N. The AD52010 is a stereo audio amplifier with high efficiency and suitable for the notebook computer, and portable multimedia device.
  • Page 12 Table:Pin functions Table: Recommended operating conditions C. HEADPHONE AMPLIFIER (U85) Description The AD22657B is a 2-Vrms cap-less stereo line driver. The device is ideal for single supply electronics. Cap-less design can eliminate output dc-blocking capacitors for better low frequency response and save cost. The AD22657B is capable of delivering 2-Vrms output into a 10k ohm load with 3.3V supply.
  • Page 13  Low Noise and THD o Typical SNR 107dB o Typical Vn 7uVrms o Typical THD+N < 0.02%  Maximum Output Voltage Swing into 2.5k Load o 2Vrms at 3.3V Supply Voltage  Single-ended Input  External Gain Setting from 1V/V to 10V/V ...
  • Page 14 Table: Recommended operating conditions 5. POWER STAGE Power socket is used for taking voltages which are 12V_stby and 24V (VDD_Audio for 10W option via power_pin1). These voltages are produced in power card. Also socket is used for giving dimming, backlight and stand-by signals with power card.
  • Page 15 List of the components are:  SW1(Q61) → FDC642P  SW2(Q77) → DMG6402LDM  DC-DC1(U2) → TPS54528  DC-DC2 (U128) → TPS562201  DC-DC3 (U129) → RT6213BHGJ6F  DC-DC4 (U63) → RT7278G (12V panel option)  DC-DC4 (U63) → TPS54528 (5V panel option) ...
  • Page 16 B. DMG6402LDM Features  Low RDS(ON)  Low Input Capacitance  Fast Switching Speed  Low Input/Output Leakage  Lead Free By Design/RoHS Compliant (Note 1)  Qualified to AEC-Q101 Standards for High Reliability Figure: Pin description C. TPS54528 Description The TPS54528 is an adaptive on-time D-CAP2™...
  • Page 17  High Initial Bandgap Reference Accuracy  Adjustable Soft Start  Pre-Biased Soft Start  650-kHz Switching Frequency (fSW)  Cycle By Cycle Over Current Limit  Auto-Skip Eco-mode™ for High Efficiency at Light Load Figure: Pin description Table: Pin functions D.
  • Page 18  Input Voltage Range: 4.5 V to 17 V  Output Voltage Range: 0.76 V to 7 V  Pulse-Skip Mode (TPS562201) or Continuous Current Mode (TPS562208)  580-kHz Switching Frequency  Low Shutdown Current Less than 10 µA  2% Feedback Voltage Accuracy (25°C) ...
  • Page 19 Features  ACOT Mode Enables Fast Transient Response  4.5V to 17V Input Voltage Range  3A Output Current  60mΩ Internal Low Site N-MOSFET  Advanced Constant On-Time Control  Support All Ceramic Capacitors  Up to 95% Efficiency ...
  • Page 20 Table: Pin functions F. RT6213 Description The RT6213A/B is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A peak output current from a 4.5V to 18V input supply. The RT6213A/B adopts ACOT architecture to allow the transient response to be improved and keep in constant frequency. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up.
  • Page 21 Figure: Pin description Table: Pin functions G. LM1117 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. The LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors.
  • Page 22 — LM1117 0°C to 125°C — LM1117I −40°C to 125°C Figure: Pin description H. APL5910 Description The APL5910 is a 1A ultra low dropout linear regulator. The IC needs two supply voltages, one is a control voltage (VCNTL) for the control circuitry, the other is a main supply voltage (VIN) for power conversion, to reduce power dissipation and provide extremely low dropout voltage.
  • Page 23 Figure: Pin description Table: Pin functions 6. MICROCONTROLLER NOVATEK NT72563MBG-GA Description The NT72563MBGis an integrated digital TV system-on-chip which compliants with variety ATV as NTSC, PAL and SECAM, and DTV standards as ISDB-T, DVB-T/-T2/-C/-S/-S2, ITU-T J.83B, ATSC, integrates DTV and multi-media AV decoder, SIF demodulator, and support A/V post-processing. The integrated video ADC and video decoder support PC VGA port, YPbPr, SCART, CVBS and S-Video Input.
  • Page 24 Features...
  • Page 29 Table: Recommended operating conditions 7. 4GB DDR3 SDRAM HYNİX H5TQ4G63EFR-TEC 2133 (U72) Description H5TQ4G83EFR-xxC,H5TQ4G63EFR-xxC, H5TQ4G83EFR-xxI, H5TQ4G63EFR-xxI, H5TQ4G83EFR-xxL, H5TQ4G63EFR-xxL, H5TQ4G83EFR-xxJ H5TQ4G63EFR-xxJ 4,294,967,296-bit CMOS Double Data Rate III (DDR3) Synchronous DRAM, ideally suited for the main memory applications which requires large memory density and high bandwidth. SK Hynix 4Gb DDR3 SDRAMs offer fully synchronous operations referenced to both rising and falling edges of the clock.
  • Page 30  TDQS (Termination Data Strobe) supported (x8 only)  Write Levelization supported  8 bit pre-fetch Table: Recommended operating conditions 8. 4GBİT (256M X 8 BİT) NAND FLASH MEMORY MT29F4G08ABAEAWP (U133) Description Micron NAND Flash devices include an asynchronous data interface for high-performance I/O operations. These devices use a highly multiplexed 8-bit bus (I/Ox) to transfer commands, address, and data.
  • Page 31  Command set: ONFI NAND Flash Protocol  Advanced command set o Program page cache mode o Read page cache mode o One-time programmable (OTP) mode o Programmable drive strength o Two-plane commands o Multi-die (LUN) operations o Read unique ID o Block lock (1.8V only) o Internal data move ...
  • Page 32  Package o 48-pin TSOP type 1, CPL2 o 63-ball VFBGA Table: Recommended operating conditions 9. 16M-BIT [16M X 1] CMOS SERIAL FLASH EEPROM KH25L1606EM2-12G MACRONİX SPI FLASH (U81) Description The device features a serial peripheral interface and software protocol allowing operation on a simple 3-wire bus.
  • Page 33  Latch-up protected to 100mA from -1V to Vcc +1V Figure: Pin configuration Table: Pin description 10. USB INTERFACE Novatek IC has four input ports for USB, and therefore it doesn’t need any hub IC. Figure: USB Block Diagram...
  • Page 34 3- Turn the TV off and unplug from main. 4- Plug the USB stick to TV (MB211). 5- When you are pressing OK button on the remote control, Plug TV (MB211) to electric socket at the same time. (Reset the TV and press the OK button immediately) 6- The update shall be processing while system booting up.
  • Page 35 13. TROUBLESHOOTING A. NO BACKLIGHT PROBLEM Problem: If TV is working, led is normal and there is no picture and backlight on the panel. Possible causes: Backlight pin, dimming pin, backlight supply (Panel_VCC), stby on/off pin BACKLIGHT_ON/OFF pin should be high when the backlight is ON. Collector pin of Q27 must be low when the backlight is OFF.
  • Page 36 Backlight power supply (Panel_VCC) should be in panel specs. Please check Q43, shown below; also it can be checked TP65. STBY_ON/OFF should be low for TV on condition, please check Q36’s collector. B. CI MODULE PROBLEM Problem: CI is not working when CI module inserted. Possible causes: Supply, suply control pin, detects pins, mechanical positions of pins.
  • Page 37  Please check mechanical position of CI module. Is it inserted properly or not?  Detect ports should be low. If it is not low please check CI connector pins, CI module pins. C. STAYING IN STAND-BY MODE Problem: Staying in stand-by mode, no other operation. This problem indicates a short on Vcc voltages.
  • Page 38 D. IR PROBLEM Problem: LED or IR not working Check LED card supply on MB211 chasis.
  • Page 39 E. KEYPAD TOUCHPAD PROBLEMS Problem: Keypad or Touchpad is not working Check keypad supply on MB211. F. USB PROBLEMS Problem: USB is not working or no USB Detection. Check USB Supply, It should be nearly 5V. Also USB Enable should be logic high.
  • Page 40 Check supply voltages of 12V_VCC, VDD_AUDIO and 3V3_AMP with a voltage-meter. There may be a problem in headphone connector or headphone detect circuit (when headphone is connected, speakers are automatically muted). Measure voltage at HP_DETECT pin, it should be 3.3v. H.
  • Page 41 İ. NO SIGNAL PROBLEM Problem: No signal in DVB-T/T2/C mode. Check tuner supply voltage; 3V3_TUNER and VDD_1V8. Check tuner options are correctly set in Service menu. Check AGC voltage at TUNER_IF_AGC pin of tuner.
  • Page 42 Problem: No signal or Low signal in DVB-S/S2 mode. Check signal cables and LNB voltage, if there is no problem, check AV2018 supply voltage 3V3_VCC_SAT. If it is OK, then measure the voltage from the PIN1 of U142. If the PIN1 voltage is equal to 0V, please check i2c waveforms and software. If the PIN1 voltage is lower than 1V (e.g: 0.8Vor 0.3V), change the U142 with a new part.
  • Page 43 14. SERVICE MENU SETTINGS In order to reach service menu, first Press “MENU” buton, then write “4725” by using remote controller. You can see the service menu main screen below. You can check SW releases by using this menu. In addition, you can make changes on video, audio etc.
  • Page 44 Audio Settings Options-1 Menu...
  • Page 45 Options-2 Menu Options-3 Menu...
  • Page 46 Tuning Settings Menu Source Settings Menu...
  • Page 47 Diagnostic Menu...
  • Page 48 15. GENERAL BLOCK DIAGRAM BACKLIGHT_DIM 3D_SYNC_OUT KEYBOARD PANEL_VCC TOUCHPAD UART 5V_VCC AMP_RST 1V5_VCC HP_DETECT HP_AMP_MUTE PC_SCL/SDA PCM_PWR_CTRL MAIN_L ESMT 3D_ENABLE AD52010 STBY_ON/OFF MAIN_R 2X2.5W RX/TX_HOTEL AUX_RESET TUN_RESET 2Gb DDR3 FLASH_WPN1 HDMI DET 12V/24V_VCC MEMORY PROTECT USB-ENABLE BACKLIGHT SYS_SCL PANEL_VCC RESET_HUB TUNER_RESET SYS_SDA ESMT...
  • Page 49 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 10uF 10uF S435 STR_ENABLE STR_EN DDR_RSTn DRAM_RSTn DDR_CKE DDRF_RSTn 12Kohms DDR_KGD_CKE VESTEL 17mb211-r4 PROJECT NAME : SCH NAME : T. SHT: <YOUR NAME HERE> DRAWN BY : 14/03/2017:17:07 A X M...
  • Page 50 LVE_4- TX_2_0_P TX_1_0_P TX_1_2_P TP58 TX_2_0_P LVO_4+ LVE_4+ TX_2_0_N TX_1_0_N TX_2_0_N TX_1_CLK_N TP64 TX_1_CLK_P TP59 TX_1_3_N TP60 VESTEL 17mb211-r4 PROJECT NAME : TX_1_3_P TP61 SCH NAME : LVDS T. SHT: <YOUR NAME HERE> DRAWN BY : 15/05/2017:14:22 A X M...
  • Page 51 1Kohms R2501 BACKLIGHT_ON/OFF BC848B 12V_INV 10Kohms C1393 4,7Kohms 3V3_STBY 0,22uF BACKLIGHT_ON/OFF R2348 7A/32VDC BC848B R2503 10Kohms VESTEL 4,7Kohms BACKLIGHT_ON/OFF_OUT PROJECT NAME : 17mb211-r4 BC848B SCH NAME : POWER T. SHT: <YOUR NAME HERE> DRAWN BY : 14/03/2017:17:07 A X M...
  • Page 52 R2776 DVD_SPDIF F107 1k 100ohms VGA_R C1939 CN23 DVD_IR TP107 R2922 IR_IN TP109 3V3_VCC 4,7Kohms VESTEL PROJECT NAME : 17mb211-r4 TP108 DVD_IR_ON/OFF 1Kohms SCH NAME : PERIPHERALs T. SHT: R139 <YOUR NAME HERE> DRAWN BY : 31/05/2017:13:29 A X M...
  • Page 53 GPD_29 R2296 HOTPLUG1 5V_STBY HOTPLUG2 GPD_30 1Kohms HOTPLUG2 BC848B 10K OLACAK CLOSE TO IC SIDE VESTEL S2_AGC VE TUNER_OF_AGC COMPONENTS PROJECT NAME : 17mb211-r4 SCH NAME : HDMI_USB_NT72670_PWR T. SHT: <YOUR NAME HERE> DRAWN BY : 11/05/2017:17:01 A X M...
  • Page 54 LNB_EN 3V3_VCC 3V3_VCC_SAT HIGH ENABLE 220R C1784 C1788 C1789 C1787 C1786 C1785 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF 0,1uF DISABLE VESTEL 17mb211-r4 PROJECT NAME : SCH NAME : TUNER_SAT_LNB T. SHT: <YOUR NAME HERE> DRAWN BY : 31/05/2017:11:01 A X M...
  • Page 55 10uF 0,1uF 0,1uF CI_IORD# GPA_28/CI_IORD TS0_D0 CI_D0 CI_IOWR# GPA_29/CI_IOWR TS0_D1 CI_D1 TS0_D2 CI_D2 CI_CD2# 3V3_VCC 10Kohms 10Kohms CI_PWR R2880 VESTEL PROJECT NAME : 17mb211-r4 SCH NAME : CI_NAND_SPI_ETH T. SHT: <YOUR NAME HERE> DRAWN BY : 15/03/2017:15:12 A X M...
  • Page 56 HP_AMP_EN 4,7Kohms 3V3_VCC F104 C2008 C1894 0,22uF R2951 R2890 C1803 BC848B A_OUT2A HP_AMP_MUTE 10Kohms 0,1uF 33Kohms VESTEL 10uH PROJECT NAME : 17mb211-r4 BC848B SCH NAME : AUDIO AMPs T. SHT: <YOUR NAME HERE> DRAWN BY : 15/03/2017:15:10 A X M...
  • Page 57 10Kohms 3V3_STBY R2831 R2830 BS18 IR_CONN IR_IN 10Kohms 10Kohms R2829 R2828 BS19 10Kohms 10Kohms BC858B 10Kohms 3V3_STBY BC858B 5V_STBY VESTEL PROJECT NAME : 17mb211-r4 SCH NAME : GPIOs T. SHT: <YOUR NAME HERE> DRAWN BY : 11/05/2017:13:28 A X M...
  • Page 58 0,1uF 0,1uF 0,1uF 10uF 10uF VDD25_TVADC 2V5_VCC 220R C2090 10uF 0,1uF VDD25_SIFADC 220R C2091 2,2uF 0,1uF VESTEL 17mb211-r4 PROJECT NAME : 10uF 0,1uF SCH NAME : NT72562_POWER T. SHT: STBC_VCC <YOUR NAME HERE> DRAWN BY : 17/03/2017:11:37 A X M...

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