Strong SRT 4155&4355 free download

File name SRT 4155 and SRT4355_servicemanual.PDF

Service Manual (SRT4355) Contents 1. Technical specifications 2. Block Diagram 3. Circuit Drawing 4. List of Error codes 5 Trouble Shooting 3.1 Trouble shooting 3.2 Check point about badness STB 6. Materials list 6.1 Main PCB materials list 6.2 Front PCB materials list 7. Software download instructions(OTA and PC download) 7.1 Program Download 7.2 System Upgrade 8. Specification of required cables for software download 9. Data Sheet 1. Technical specifications 1.1. Conditional Access Interface PCMCIA 2. Slot(type I or type II) DVB Common Interface Standard (Viaccess, Nagra Vision, Conax, Cryptoworks, Irdeto, ASTON) 1.2. Tuner & Channel Input Connector F-type, IEC169-24, Female Frequency Range 950MHz to 2150MHz Input Impedance 75ohm unbalanced Signal Level -25 to ­65dBm IF Bandwidth 55MHz LNB Power Vertical: +13V Horizontal: +18V Current: Max, 400mA Polarization 13V/18V or Skew Control 22kHz Tone Frequency: 22±4kHz Amplitude: 0.6±0.2V DiSEqC control Version (1.0 & 1.2) Compatible Demodulation QPSK Input Symbol Rate 2-45 Ms/s FEC Decoder Convolution Code Rate 1/2, 2/3, 3/4, 5/6, and 7/8 With Constraint Length K=7 1.3. System & Memory Main Processor L64108(LSI-LOGIC) Flash Memort 1Mbyte Program Dram 2Mbyte EEPROM 8kbyte Channel Memory Digital Channel: 3000 (Total : 3500) Analog Channel: 500 Multi-Satellite UP to 64 Multi-Language Menu English/Spanish/French/Italian/German/Portuguese Front 7 keys, 4-digit 7­segment display Remote Controller 30-31 keys, IR Remote Control 1.4. MPEG Transport Stream & A/V Decoding Transport Stream MPEG-2 ISO/IEC 13818 Transport Stream Specification Profile Level MPEG-2 MP@ML Input Rate Max. 40Mbit/s Aspect Ratio 4:3, 16:9 Frame Rate 25Hz for PAL, 30Hz for NTSC Video Resolution 720x576(PAL),720x480(NTSC) Teletext Through VBI Audio Decoding MPEG/MusiCam Layer I & II Audio Mode Single channel/Dual channel joint stereo/Stereo Frequency Response 20~20kHz, <+/- 2dB 60Hz~18kHz <+/- 0.5dB Sampling Rate 32, 44.1, 48kHz 1.5. A/V & Date In/Out TV Scart Output RGB, CVBS, L, R Output with Volume control VCR Scart In/Out CVBS, L, R In CVBS, L, R Out RCA Output CVBS, L, R Output(Yellow, White, Red Hack) with Volume Control 0V/12V Output RCA Jack Output(Black Jack), Max. 150mA Data Interface RS-232, Bit Rate: 115200baud Connector: