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Settop-Box

Service Manual

Model : SRT4155Evolution

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Summary of Contents for SRT4155Evolution

Page 1: ...Settop Box Service Manual Model SRT4155Evolution ...

Page 2: ... 1 Block Diagram 3 page 2 Features 4 page 3 Technical Specifications 5 8 page 4 Trouble Shooting 9 17 page 5 Bill of Materials List 18 22 page 6 Circuit Drawing 23 32 page 6 1 Main Front PCB Board 6 2 SMPS PCB Board ...

Page 3: ...PS 3 3V 5V 7V 12V 22V 30V 2 SLOT PCMCIA SDRAM MEM K4S641632E TC60 FLASH MEM TE28F160C3TA90 FRONT 7 KEYs LEDs IR Reciever SERIAL INTERFACE ST3232CD SCART CONT STV6412 TV SCART VCR SCART 4 RCA CVBS L R 12V RF MODULATOR RMUP74055WT A DAC AK4351 LNBP 22K CONT OVER CURRENT PROTECTION S PDIF OUT TOTX178 BS2F7VZ0184 ...

Page 4: ... or Radio Channel Channel Name PID Transponder Name EPG for On Screen Channel Information Channels Memory for Multi satellite 3 Operation Modes Digital TV Digital Radio Favorite Receives QPSK Satellite Broadcasting RF Signal and Decodes the Digitally Encoded Signal Digital Tuner with Loop through SCPC MCPC Receivable from C KU band Satellite Wide Symbol Rate 2 45 Mbps 950 2150 MHz input Frequency ...

Page 5: ...n1 2 Tone burst A B Demodulation QPSK Symbol Rate 2 45 Msps SCPC MCPC 2 MPEG Transport Stream MPEG 2 TS Specification ISO IEC 13818 Input Rate Max 60Mbit s VIDEO MPEG 2 MP ML AUDIO MPEG 1 2 Audio layer 1 2 Aspect Ratio 4 3 16 9 Video Resolution 720 x 576 PAL 720 x 480 NTSC Audio mode Stereo Dual channel Joint stereo Mono Audio Sampling Frequency 32 44 1 48KHz 3 A V Data In Out TV SCART RGB CVBS L ...

Page 6: ...ower Consumption 6 5W Protection Separate Internal Fuse The input shall the lighting protection 7 SCART Socket PIN No TV AUX 1 Audio out Right Audio out Right 2 Audio in Right 3 Audio out Left Audio out Left 4 Audio ground Audio ground 5 Blue ground Blue ground 6 Audio in Left 7 BLUE out BLUE in 8 Function control out Function control in 9 Green ground Green ground 10 11 GREEN out GREEN in 12 13 R...

Page 7: ...smit Data 4 5 Ground 6 7 8 9 S P E C T 9 Pin Male Type 9 Pin Male Type 9 Physical Specification Environmental Condition Weight 2 0 KG Size WxHxD 280mm x 55mm x245mm Operating Temperature 0 C x 40 C Storage Temperature 10 C x 80 C Operating Humidity Range 10 85 RH Non condensing Storage Humidity Range 5 90 RH Non condensing 2pin 3pin 5pin 2pin 3pin 5pin ...

Page 8: ...10 REAR Panel Back View AC IN RF MOD DIGITAL SCART ANT TV VCR AUDIO VIDEO R CVBS IF IN L 0 12V LOOP OUT RS 232 S PDIF TV OUT VCR IN OUT ...

Page 9: ...e 115 200 bps Data bit 8 bits Parity bit none Stop bit 1 Control none 4 3 1 Check STI5518 Clock 4 3 2 Test for Flash Memory 4 4 MPEG and Audio Video Test Check the whole process from MPEG Decoder STI5518 and Audio Video SWITCH STV6412 of R G B Y C CVBS Also Check the Audio signal U502 AK4351VT Output port SCART Phone Jack RF Modulator 4 4 1 STI5518 MPEG 2 Audio Video Decoder 4 4 2 SCART Controller...

Page 10: ... Pin 38 Failure Causes and Solution If the 27Mhz is acting unstably Check the SCO and U402 SDRAM and U301 STI5518 is damaged or not If you are firm belief of damage for the device then replace the device If the clock 81Mhz on TP301 120Mhz on Pin 38 of U402 is not generated from inside of the chip Please check the soldering state of U301 ...

Page 11: ...t pin of STI5518 must be checked And if these signal are not acting like above figure then check the soldering state of U301 U401 and RA3xx Before checking these signal you must check the power for U301 U401 etc Check 3 3V on L301 L302 L304 and check 2 5V on L303 L305 L306 respectively 4 4 1 STI5518 MPEG 2 Audio Video Decoder SCLK Check point U301 Pin 51 SDATA Check Point U301 Pin 52 ...

Page 12: ...olution If the Audio Main CLK MCLK 2 048Mhz 12 8Mhz is acting unstably check the soldering state of STI5518 And check the oscillator U304 is generating 27 Mhz clock If STI5518 and oscillator are OK then check the Audio DAC U502 And all these are OK STI5518 maybe damaged Then you can try to replace the STI5518 ...

Page 13: ...4 4 2 SCART Controller STV6412 BLUE Check Point U301 Pin 25 GREEN Check Point U301 Pin 26 RED Check Point U301 Pin 27 C Check Point U301 Pin 33 ...

Page 14: ...al is not operating correctly you should check R314 R315 18 Khom And you may try to check the net concerning to B G R Y C CVBS on R501 R503 R505 R507 R509 and R511 When you had finished checking the above net or device and all these are OK STI5518 maybe damaged Then you can try to replace the STI5518 ...

Page 15: ...king the above net or device and all these are OK Audio DAC maybe damaged Then you can try to replace the Audio DAC 4 5 Channel Test 4 5 1 When NO SIGNAL is displayed Check the RF cable is connected to LNB IN connector of rear panel Then check U105 KA317 Regulator pin 3 is powered between 21V to 24V And check the voltage on L101 L104 is proper level When you had finished checking the above net or ...

Page 16: ...121 And this is properly high then check the Q107 U105 and Q109 respectively 2 I2C Control Signal SCL_NIM Check Pont U301 Pin 20 SDA_NIM Check Point U301 Pin 21 Failure Causes and Solution If there s no or different signal compare to above picture on I2C line check the associated net Try to remove serial resistor R205 R206 R351 R352 R549 R550 R581 and R582 then if you could find what device has pr...

Page 17: ... ERROROUT control signal 22Khz Check Point R127 22Khz ON L OFF H Check Point R128 CH_CLK Check Pont RA101 Pin 4 ERROROUT Check Point RA101 Pin 1 Failure Causes and Solution If there s no 22 KHz check the Pin 12 of Tuner and associated net ...

Page 18: ...hip Inductor 15uH 10 4 SMD 6 BC101 BC521 BC901 BC902 BC903 CS2012Y5V104J500NR SAMWHA I2203 000192 Chip Ceramic 2012 Size 0 1uF 50V BC904 5 SMD 71 BC102 BC103 BC104 BC105 BC106 CS1608Y5V104Z500NR SAMWHA I2203 006000 Chip Ceramic 1608 Size 0 1uF BC108 BC215 BC301 BC302 BC303 BC304 BC305 BC306 BC307 BC308 BC309 BC310 BC311 BC312 BC313 BC314 BC315 BC317 BC319 BC320 BC321 BC322 BC351 BC401 BC402 BC403 ...

Page 19: ... SMD 1 R126 CR 1 10 121 JT HAN RYUK I2007 000023 Chip Resistor 2012 Size 120 Ohm 5 21 SMD 12 R530 R534 R535 R536 R537 R539 CR 1 10 750 JT HAN RYUK I2007 001166 Chip Resistor 2012 Size 75 Ohm 5 R555 R556 R557 R558 R567 R568 22 SMD 2 R314 R315 CR 1 16 1802 FT HAN RYUK I2007 000455 Chip Resistor 1608 Size 18 Kohm 1 23 SMD 6 R501 R503 R505 R507 R509 R511 CR 1 16 3000 FT HAN RYUK I2007 040212 Chip Resi...

Page 20: ... 001289 IC STB Decoder PQFP 208 44 SMD 1 U303 MM74HC14M Fairchild I0801 003011 IC CMOS Logic Schmitt Trigger SOIC 14 45 SMD 1 U305 MM74HC04M Fairchild I0801 002385 IC CMOS Logic SOIC 14 46 SMD 1 U351 AT24C64N 10SC 2 7 Atmel IMD13 00125D IC EEPROM 3 3V 64K SOIC 8 2nd M24C64WMN6 47 SMD 1 U401 TE28F160C3TA90 Intel I1107 001164 IC Flash 3 3V 1M 16 90ns TSOP 48 48 SMD 1 U402 K4S641632E TC60 Samsung I11...

Page 21: ...er 16 DIP 1 JP302 2110 SS2 G ILSSAN I3711 005028 2 54mm 2 Pin Header 17 DIP 1 JP305 SMW200 12 Hanlim IAJ37 00605L 2 0mm 12 Pin Wafer Locking Type 18 DIP 1 CON451 3302 09P AFS 0 ILSSAN I3710 001574 DB9 Male PCB Mount Right Angle 19 DIP 1 CON551 TOTX178A Toshiba I3707 000001 Toslink SPDIF 20 DIP 1 JP501 2203 42ST A Type ILSSAN I3722 001410 Dual SCART Connector 2203 42T 21 DIP 1 JP502 JS0401315N I372...

Page 22: ...77 LED ROUND LG3330 GREEN 5mm 565mm 12 DIP 3 LED Remocon Sensor Support support 7mm I6103 001040 LED support 13 DIP 13 JP1 JP13 7 5mm JUMPER I3811 000548 7 5mm JUMPER 14 PCB 1 FRONT PCB IT415S IT415K1 PR1 0 VER 1 2 2002 01 16 P IT415F 1 2 PCB FRONT IT415K1 PR1 0 VER1 2 Item Div Quantity Reference Part Number Vendor CORD Remark 1 PCB 1 RF_SUB PCB IT612_R1 3 VER 1 3 1Layer PSIT513 R1 2 IT612_R1 2 VE...

Page 23: ...ocument Number Rev Date Sheet of S5V S5V S5V S5V S5V S5V S5V CB1 0 1uF LED1 Red S1 KPT1105 R5 33 U3A TSOP1238 GND 1 VS 2 OUT 3 S2 S3 Q1 2N3904 CE1 47uF 16V S4 S5 S6 S7 CON1 HEADER 12 1 2 3 4 5 6 7 8 9 10 11 12 R9 330 LED2 GREEN Q3 2N3904 R1 330 R6 1K R7 1K Q2 2N3904 R8 1K Q4 2N3904 R11 330 LED3 YELLOW R10 1K ...

Page 24: ...50V BC904 0 1uF 50V BC906 0 1uF BC905 0 1uF CE906 100uF 25V L903 FCM2012C 101 CE905 100uF 25V BC908 0 1uF BC907 0 1uF CE908 100uF 25V L904 FCM2012C 101 BC910 0 1uF BC909 0 1uF CE910 220uF 10V CE909 220uF 10V L906 FCM2012C 101 L905 FCM2012C 101 JP901 HEADER 11 1 2 3 4 5 6 7 8 9 10 11 BC911 0 1uF L908 FCM2012C 101 CE912 220uF 10V CE911 220uF 10V L907 FCM2012C 101 BC912 0 1uF BC902 0 1uF 50V CE902 47...

Page 25: ...DIF_OUT 57 SMI_ADDR4 58 SMI_ADDR5 59 SMI_ADDR6 60 SMI_ADDR7 61 SMI_ADDR8 62 SMI_ADDR9 63 VDD2_5 64 VSS 65 SMI_ADDR3 66 SMI_ADDR2 67 SMI_ADDR1 68 SMI_ADDR0 69 SMI_ADDR10 70 SMI_ADDR11 71 SMI_ADDR12 72 SMI_ADDR13 73 SMI_CS0 74 SMI_CS1 75 SMI_RAS 76 SMI_CAS 77 SMI_WE 78 SMI_DQML 79 SMI_DQMU 80 VDD3_3 81 SMI_CLKIN 82 VSS 83 SMI_DATA0 84 SMI_DATA1 85 SMI_DATA2 86 SMI_DATA3 87 SMI_DATA4 88 SMI_DATA5 89 ...

Page 26: ...02 10uF 25V BC407 0 1uF BC406 0 1uF BC402 0 1uF BC408 0 1uF U351 AT24C64N SC27 PRE 1 PB0 2 PB1 3 VSS 4 SDA 5 SCL 6 MODE 7 VCC 8 BC351 0 1uF R351 33 R352 33 R409 NC R410 4 7K L401 FCM2012C 101 CE401 10uF 25V BC401 0 1uF R363 75 CON361 CON20A 1 3 5 7 9 11 13 15 17 19 2 4 6 8 10 12 14 16 18 20 R364 75 R366 NC R361 10k R362 10k R365 10k RA361 4 7K 1 2 3 4 5 6 7 8 U451 ST3232CD C1 1 C1 3 C2 4 C2 5 TIN1...

Page 27: ...3 220 CE523 4 7uF 25V R568 75 1 10W R561 220 L513 NC WCI32 101J R549 33 R550 33 R555 75 1 10W R566 12K R565 12K R564 0 BC519 0 1uF C521 NC 12pF BC508 0 1uF CE503 47uF 50V BC507 0 1uF R567 75 1 10W R573 4 7K Q503 KTA1273 R571 6 8K R570 6 8K Q504 KN3904S R574 10K R572 0 R575 10K C507 NC R504 NC C505 56pF L502 FCI2012 150K C506 18pF C504 NC R503 300 1 CE519 10uF 25V R546 10K R552 220 R527 47K R528 47...

Page 28: ... 0 RF MODULATOR SUB PCB A 6 6 Monday April 29 2002 Title Size Document Number Rev Date Sheet of U51 RMUP74055WT Samsung BSTB 1 VIDEOIN 6 AUDIOIN 2 MODB 4 SCL 5 SDA 3 VT 7 GND 8 JP51 2250 10S DS T 1 2 3 4 5 6 7 8 9 10 JP52 2250 10S DS T DUMMY 1 2 3 4 5 6 7 8 9 10 ...

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