Genius TVB-S201 PRO, Service Manual

Page 1: ...Service Manual TVB S201 PRO ...

Page 2: ... 2 Signal 6 d Check REG5 Pin 2 Signal 7 e Check REG3 Pin 2 Signal 8 f Check REG4 Pin 2 Signal 9 g Check X1 U22 Pin 26 X TAL Signal 10 h Check X2 Pin 3 U5 Pin 62 U1 Pin 41 OSC Signal 11 i Check Y301 X TAL Signal 12 j Check U1 CLK_SAA Signal 13 k Check U1 RAM_CLK Signal 14 Chapter 3 Troubleshooting Guide 15 Chapter 4 Removal and Replacement 16 Chapter 5 Parts list 17 Chapter 6 Tools 17 Version 1 0 P...

Page 3: ...in98 above c Block Diagram TV VGA VGA Silicon Tuner IN OUT S Video Video PIP select Module SAA 7135 processor STV 108A PIP Composite Selector Audio Line in Audio Switch MCU OSD Audio Amplifie SDRAM SM 602 Audio Selector PC audio line in Audio out EEPROM Button input I C BUS 2 Version 1 0 Page 2 ...

Page 4: ...ures a Testing flow chart T T T T REPLACE REG3 T REPLACE ADAPTER REPLACE REG2 F F Check REG5 Pin 2 2 5V REPLACE REG5 Check REG4 Pin 2 1 8V F REPLACE REG4 Check REG3 Pin 2 3 3V Check REG2 Pin 2 3 3V Check VCC 5V START A F F Version 1 0 Page 3 ...

Page 5: ...ervice Manual A T Check X1 X TAL signal Check X2 OSC signal Check Y301 X TAL signal T Check U1 CLK signal REPLACE U1 REPLACE Y301 U301 F REPLACE X2 U5 U1 T REPLACE X1 U22 F T F T F END Version 1 0 Page 4 ...

Page 6: ...Service Manual b Check VCC 5V L34 PIN1 Version 1 0 Page 5 ...

Page 7: ...Service Manual c Check REG2 Pin 2 Signal REG2 PIN 2 Version 1 0 Page 6 ...

Page 8: ...Service Manual d Check REG5 Pin 2 Signal REG5 PIN2 Version 1 0 Page 7 ...

Page 9: ...Service Manual e Check REG3 Pin 2 Signal REG3 PIN2 Version 1 0 Page 8 ...

Page 10: ...Service Manual f Check REG4 Pin 2 Signal REG4 PIN2 Version 1 0 Page 9 ...

Page 11: ...Service Manual g Check X1 U22 Pin 26 X TAL Signal U22 PIN26 Version 1 0 Page 10 ...

Page 12: ...Service Manual h Check X2 Pin 3 U5 Pin 62 U1 Pin 41 OSC Signal U1 PIN41 U5 PIN62 Version 1 0 Page 11 ...

Page 13: ...Service Manual i Check Y301 X TAL Signal C322 PIN1 Version 1 0 Page 12 ...

Page 14: ...Service Manual j Check U1 CLK_SAA Signal U1 PIN58 U5 PIN66 Version 1 0 Page 13 ...

Page 15: ...Service Manual k Check U1 RAM_CLK Signal U1 PIN136 Version 1 0 Page 14 ...

Page 16: ...ilure 1 Change U15 4 LED no lit 1 no power 1 LED failure 1 Change LED 5 Remote not functions 1 Remote control malfunction 1 IR1 failure 1 Change IR1 6 No TV image 1 Display malfunction 1 TDA8275 NG 1 Change Y301 7 Black white image only 1 Only black and white color in TV AV SVHS modes 1 X TAL NG 1 Change X2 8 No display in AV SVHS modes 1 No display in AV SVHS modes 2 display correctly in TV mode ...

Page 17: ...e ports facing you Device before disassemble 2 Remove screws Remove the rubber protectors at the corners and take out the screws 3 Open the case Remove bottom cover 4 Remove PCB from case Remove the PCB by lifting it and pulling it slightly toward you being careful not to damage the LED light Version 1 0 Page 16 ...

Page 18: ... U1 102100010800 REG5 101900111702 U22 102100060200 REG4 101900111707 U5 102100713500 REG2 REG3 101900886000 X1 12MHZ 201511200000 X2 OSC24 576MHZ 201522457600 Y301 16MHZ 201511600000 SW1 SW6 TACT SWITCH 201200300404 Chapter 6 Tools 1 Screwdriver cross 2 Oscilloscope Version 1 0 Page 17 ...