1. Manuals
  2. Brands
  3. Strong Manuals
  4. Receiver
  5. SRT4355
  6. Service manual

Strong SRT4355 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Service Manual
(SRT4355)

Advertisement

Table of Contents
loading

Related Manuals for Strong SRT4355

Summary of Contents for Strong SRT4355

  • Page 1 Service Manual (SRT4355)

  • Page 2: Table Of Contents

    Contents 1. Technical specifications 2. Block Diagram 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.

  • Page 3: Technical Specifications

    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 <Digital Part> Input Connector F-type, IEC169-24, Female Frequency Range 950MHz to 2150MHz Input Impedance 75ohm unbalanced Signal Level...
  • Page 4 1.4. MPEG Transport Stream & A/V Decoding <Digital Part> Transport Stream Transport Stream Specification MPEG-2 ISO/IEC 13818 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...
  • Page 5 1.7. Power Supply Input Voltage AC90 to 260V, 50Hz/60Hz Type PWM Regulator Power Consumption Max. 40W(without Positioner) Stand-by Power <= 10W Protection Separate Internal Fuse The input shall have the lighting protection 1.8. Physical Specification Size (WxHxD) 280x55x235mm Excluding the foot. Foot height is 10mm. Weight 2.0Kg 1.9.

  • Page 6: Block Diagram

    2. Block Diagram CH_VALID, CH_CLK, CH_STRT, 74244 PTO[0..7] Block Diagram 74244 QPSK NIM Common 74244 (TBMU30311) Interface 74244 74244 8-bit BD[0..7] microcontroller Front Panel (AT89C51) TS_VALID, I2C(SDL,SCA) TS_CLK, RS-232 TS[0..7] (DS232AS) SCL, SCL,SDA RCA JACK TTXDATA, TTXREQ TXD,RXD AVD[0..7] YCRCB[0..7] CVBS EEPROM TV SCART...
  • Page 7 I/O11 BD10 D_RSTN I/O10 GPIO49 I/O09 GPIO48 I/O08 GPIO47 R19 4.7K I/O07 GPIO46 I/O06 GPIO45 CASEN 4.7K I/O05 GPIO44 UK STRONG I/O04 GPIO43 I/O03 GPIO42 Title CH_RST I/O02 GPIO41 L64108 V_RSTN I/O01 GPIO40 Size Document Number KM416V1204CJ-6 L64108C Custom SRT4355...
  • Page 8 10 mm 이상 떨어져서 연결 XDA3 SBA3 XDA4 SBA4 XDA5 SBA5 XDA6 SBA6 XDA7 SBA7 XDA8 SBA8 TESTCLK 3.3V 4.7K RSVD RSVD UK STRONG RSVD Title L64005 Size Document Number Custom SRT4355 L64005 160p PQFP Date: Thursday, November 15, 2001 Sheet...
  • Page 9 10uF/16 FCM2012C-101 TIN1 TXD1 TIN2 RXD1 FCM2012C-101 SP232ECN 3302-09S-AFS-0 UK STRONG Title RS232C Size Document Number SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 10 P1.6 P2.3 P1.7 INTN1 P2.4 12V_ON/OFF P2.7 P2.0 P2.5 RESETN /RD(P3.7) P2.6 /WR(P3.6) CON14 RXD2 TXD(P3.1) TXD2 RXD(P3.0) INT0(P3.2) RA20 RA19 11.0592MHz 4.7K 4.7K 18pF 18pF UK STRONG Title MICOM Size Document Number SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 11 22pF 1.8uH(TDK:NL252018T-1R8J) GREEN 52pin PQFP 75 1% 75 1% 270pF 330pF 22pF SYSCLK 1.8uH(TDK:NL252018T-1R8J) V_RSTN BLUE 75 1% 75 1% 270pF 330pF BLANKn VSYNCn HSYNCn UK STRONG Title VIDEO ENCODER Size Document Number SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 12 HCB3216K-310T30 C135 100uF/16V 5267-11 IRFZ34 BD24 1.2K(2012) HCB3216K-310T30 3.3VS C125 1.2K (2012) 100uF/16V 200 (2012) ONLY IT512 3.3V IRFZ34 HCB3216K-310T30 470uF/10V 4.7k (2012) 4.7uF/50V 4.7K(2012) 4.7uF/50V UK STRONG Title POWER Size Document Number SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 13 PCMDATA SDATA SYSCLK SYSCLK AOUTR R_AUDIO 005_ACLK 005_ACLK MCLKO VCOM 10/16 10/16 V_RSTN VREFH DVDD AVDD DVSS AVSS VREFL 10/16 DIF0 TST1 DIF1 TST2 AK4323VF UK STRONG Title AUDIO DAC Size Document Number SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 14 SCART VCR SCART...
  • Page 15 RESET EADDR5 PCMCIA SOCKET MODULE B R182 R181 EADDR4 EADDR[0..17] NC(0) R156 4.7K EADDR[0..17] R157 PCMCIA_A KTA1273 C110 R179 1uF/50V UK STRONG TTL_VCC Title R159 4.7K R154 COMON INTERFACE PCMCIA_B C111 C112 C113 C114 C115 C116 C117 C118 C119 C120...
  • Page 16 1.8K/3216 4.7K LNBP_OFF DTC114 R186 DTC114 4.7K(2012) KTA1273 LNB_LP LNB_P DTC114 R141 22KHz 8051_LNBP_OFF DTC114 R128 4.7K 22ON/OFF DTC114 R129 KN3904S R130 LOOP_CNTL KN3904S UK STRONG Title QPSK DEMODULATOR Size Document Number Custom SRT4355 Date: Thursday, November 15, 2001 Sheet...
  • Page 17 BSTB+ AUDIOIN MODB+ VIDEOIN RMUP74055WT ( »ï¼º ) 2250-10S-DS-T 2.0mm PITCH JP10 2250-10S-DS-T Title RF MODULATOR SUB PCB Size Document Number Date: Tuesday, November 20, 2001 Sheet...
  • Page 18 1N4001 P O W E R ( S TBY) KPT1105 1N4001 UK STRONG Title F R O N T C I R C U I T Size Do c u m e n t N u m b e r...

  • Page 19: List Of Error Codes

    4. List of Error codes E001: Tuner Error. E002: EEPROM Error. E003: RF Error. E004: BT864 Error. E005: L64005 Error. E006: DRAM Error. E007: STV0056 Error. E008: ATuner Error. 5. Trouble Shooting There may be various reasons for the abnormal operation of the receiver. Check the receiver according to the procedures shown below.

  • Page 20: Check Point About Badness Stb

    The remote controller The batteries of the Check whether the batteries Does not working. Remote controller are Are inserted correctly in your Not inserted or Remote controller. Exhausted. Check the batteries, and if Exhausted, replace the Batteries of the remote Controller.
  • Page 21 (4) Flash - Rom of Start Control Signal uses reset, chip - Select RESET --à Check Point : U2(12pin) CE --à Check Pint : U2(26 pin) Action) : If the flash-Rom(U2) not operation. , must be Checking chip-select pin from L64108. Replacement of part is required. Because Reset and Chip-Select signal is not Booting.
  • Page 22 if “starting boot ” message is displayed , Do Download again by suitable Firmware to model . Do STB Power off/on after Download is completed. If screen is displayed, it does FACTORY RESET necessarily. 2) When Message is displayed (Message can be different according to Firmware Version) Set ACLK <32000>...
  • Page 23 U4 : EEPROM(24C64) change When “Tuner connect Fail ” Message happens If POWER supplied to Tuner is normalcy , Tuner must change. When “ FLUSH DRAM ” Message happens U7(L64005) and U 8(KM416S1020) Re - sold ering do, and change U 7(L64005) if is happened again. Normal Message as being displayed, change MICOM if TV screen does not come 5.2.2.
  • Page 24 L14(Coil): about 28V , U12(Regulator)-Pin 3 : about 5V (E54(+)Elect Cap ) : 3.3V Action) : If voltage is normalcy TUNER change . 2. U12(Regulator)-Pin3 : 3V~ 0V Action) : If it is 100 ohm lows, d oing AC POWER OFF and measure U12 's(Regulator) 3Pin and resistance between GND Tuner change (5) Check...
  • Page 25 Factory Reset. Still, change U2(39VF800A Flash ROM) if do not become. 5.2.3. “CI CARD INITIALIZING NOW….” Message becomes Display continually on screen and when Menu transfer is slow Firmware again Download do . 5.2.4. When do not act whether FRONT 7-SEGMENT(DISPLAY) acts strangely (6) Change FRONT PANEL (7) Change MICOM(U 10 ) (AT89C51) U10 : Confirm by SCOPE...
  • Page 26 RED --à GREEN --à BLUE --à...

  • Page 28: Materials List

    6. Materials list 6.1 Main PCB materials list cc Quantity Reference Part Number VENDOR PCB -MAIN ; IT612_R1.8 VER 1.8, 2Layer 3 BD1,BD2,L15 CORE -FERRITE BEAD ; FCM2012C -101,100ohm TAI -Tech 7 BD6,BD9,BD24,BD3,BD4,BD5,BD7 CORE -FERRITE BEAD ; SMB403025 TAI -Tech 4 L4,L5,L6,L7 INDUCTOR -SMD ;...
  • Page 29 R136 R -CHIP ; 2.7Kohm, 5%, 1/8W, DA, TP, 3216 HAN RYUK R138 R -CHIP ; 1.8Kohm, 5%, 1/8W, DA, TP, 3216 HAN RYUK R_CHIP ;16.9Kohm,1%,1/16W,DA,TP,1608 HAN RYUK R93,R94,R109,R110,R111,R112 R -CHIP ; 560ohm, 5%, 1/16W, DA, TP, 1608 HAN RYUK R58,R52,R53 R -CHIP ;...
  • Page 30 C31,C34,C37,C40 C -CERAMIC, C HIP ; 270pF, 5%, 50V, NPO, TP, 1608 SAMWHA C33,C36,C39,C42 C -CERAMIC, CHIP ; 330pF, 5%, 50V, NPO, TP, 1608 SAMWHA C127,C128,C129,C130,C131, C -CERAMIC, CHIP ; 470nF, +80 -20%, 16V, Y5V, TP, 2012 SAMWHA C132,C133,C134 C10,C13,C16,C2 1,C22 C -CERAMIC, CHIP ;...
  • Page 31 E31,E29,E33,E34,E55,E56 C -AL ; 1uF/50V -5*11*5,FORMING CUT TYPE SAMWHA C -AL ; 470uF/10V -8*11.5*5, FORMI NG CUT TYPE SAMWHA C -AL ; 1000uF/10V -10*16*5, STRAIGHT CUT TYPE SAMWHA Q16,Q17,Q18,Q19,Q20,Q21,Q22,Q23 TR -SMALL SIGNAL ; 2N3904 TO -92 ´ÜÀÏ PKG,NPN,60V,40V,200mA,1.5W,TO SAMSUNG Q11,Q27,Q32,Q35,Q36,Q512 TR -POWER ;...

  • Page 32: Front Pcb Materials List

    6.2 Front PCB materials list Item Quantity Reference Part Number Vendor BC1,BC2 CR051BX7R104Z500R SAMWHA D1,D2,D3,D4,D5,D6,D8 1N4001 PHILIPS 14P 162020 MOLEX FOUR DIGIT DISPLAY LFD4162 - 10/SP8 LIGITEK FOUR DIGIT DISPLAY support support : 10mm LED2 LH3330 LIGITEK LED4 LG3330 LIGITEK LED support support : 7mm Q1,Q2,Q3,Q4...

  • Page 33: System Upgrade

    Firmware download You can download firmware to receiver Press “BROWE” button to select firmware (ELF) to downloading. After selecting firmware, you can start downloading by pressing “START” button. You can see progressing bar while downloading The receiver will automatically restart when downloading is finished. Channel Information upload You can save channel information of receiver to PC file by using this function You have to select a file to save in PC by pressing “BROWSE”...
  • Page 34 When the screen is back is to normal, you can leave the menu. Tips : Do not turn off your receiver while you are downloading new software. Be sure that your receiver is connected to the satellite signal of ASTRA 19.2 East. 7.3 SRT4355 U23(EPM3032ALC44-10) programming method MAX+plus II icon double clock...
  • Page 35 MAX+plus II menu clock -> “Programmer” clock on sub menu...
  • Page 36 “Option” -> “Hardware setup” -> ByteBlaster(MV)
  • Page 37 “File” on main menu à “Select Programming File” -> select programming file(srt4355.pof) in directory select “Program” -> down loading start...
  • Page 38 STB power off or cable not connected, if it have error message if you want to check device check sum, select “Examine”...

  • Page 39: Specification Of Required Cables For Software Download

    8. Specification of required cables for software download 8.1 PC Download Cable 1pin 1pin 2pin 2pin 5pin 5pin 9PIN (E-MAIL) 9PIN (P-MAIL)
  • Page 40 8.2 U23 Download Cable...

Table of Contents