Genius TVGO DVB-T02Q, Service Manual

Page 1: ...Service Manual ...

Page 2: ...ctor on the reverse side 4 b Remove screws 5 c Open the case 6 d Remove PCB from case 7 Chapter 3 Testing Procedures 8 a Testing flow chart 8 b Check USB Power 10 c Check System 2 5V 11 d Check System 3 3V 12 e Check DVB 1 8V 13 f Check Tuner VDD 3 3V 14 g Check X1 12MHz 15 h Check X2 20 48MHz 17 i Check U2 DVB Clock DVB Data 19 j Check Device on the Windows Device Manage 21 Chapter 4 Troubleshoot...

Page 3: ...ailable hard disk space 100MB used to install the driver and software Space needed for video recording requires 3GB per hour for DVD format data d Block Diagram CIR Control M9206 USB Connector MT352 USB MPEG2 Transport Stream Crystal 12Mhz USB SYSTEM POWER AIC1550 PWM LTC3406 PWM 3 3V DVB 3 3V SYS 1N4148 DIODE 3 3V SYS 2 5V SYS 3 3V DVB 1 8V DVB MT2060 POWER Distribution 3 3V VDD 3 3V VDD Antenna ...

Page 4: ...Service Manual TVGo DVB T02Q 4 Chapter 2 Removal and Replacement a Remove label protector on the reverse side Remove label protector ...

Page 5: ...Service Manual TVGo DVB T02Q 5 b Remove screws Remove screw ...

Page 6: ...Service Manual TVGo DVB T02Q 6 c Open the case ...

Page 7: ...Service Manual TVGo DVB T02Q 7 d Remove PCB from case ...

Page 8: ... 8 Chapter 3 Testing Procedures a Testing flow chart START Check USB Power 4 5 5 5V CN2 Pin 1 A Check U10 Pin 3 System 3 3V Check D4 Pin2 2 5V Check U5 Pin 8 1 8V Check PC USB Port Replace U10 Replace D4 Replace U5 T T T T F F F F ...

Page 9: ... TVGo DVB T02Q 9 Check U2 Pin 61 DVB Clock Check U2 Pin 49 DVB Data Check X2 Pin 1 20 48MHz A Check X1 Pin 1 12MHz Replace X1 Replace X2 Replace U2 Replace U2 T T T T T F F F F END F Check U1 Pin 6 7 D D Replace U1 T ...

Page 10: ...Service Manual TVGo DVB T02Q 10 b Check USB Power Check USB Power 4 5 5 5V CN2 Pin 1 ...

Page 11: ...Service Manual TVGo DVB T02Q 11 c Check 2 5V Check D4 Pin 2 2 5V ...

Page 12: ...Service Manual TVGo DVB T02Q 12 d Check System 3 3V Check L19 Pin 2 3 3V ...

Page 13: ...Service Manual TVGo DVB T02Q 13 e Check DVB 1 8V Check DVB 1 8V L13 Pin 2 ...

Page 14: ...Service Manual TVGo DVB T02Q 14 f Check Tuner VDD Check L12 Pin 2 VDD 3 3V ...

Page 15: ...Service Manual TVGo DVB T02Q 15 g Check X1 12MHz Check U1 Pin 14 12MHz Please check X1 frequency is 12MHz ...

Page 16: ...Service Manual TVGo DVB T02Q 16 Replace X1 crystal ...

Page 17: ...Service Manual TVGo DVB T02Q 17 h Check X2 20 4MHz Check U2 Pin 23 20 4MHz Please check X2 frequency is 20 4MHz U2 ...

Page 18: ...Service Manual TVGo DVB T02Q 18 Replace X2 crystal ...

Page 19: ...nual TVGo DVB T02Q 19 i Check U2 DVB Clock DVB Data Check U2 Pin61 DVB Clock Check Pin61 DVB Clock frequency must 60MHz NOTE Different country The DVB clock will get different frequency Check U2 Pin49 DVB Data U2 ...

Page 20: ...Service Manual TVGo DVB T02Q 20 Replace U2 MT352 Check DVB Data Note if the level of the wave is always low or high it is to represent a fault of the function U2 ...

Page 21: ...Service Manual TVGo DVB T02Q 21 j Check Device on the Windows Device Manage Check Device on the Windows Device Manager If not found Please replace U1 ...

Page 22: ...Service Manual TVGo DVB T02Q 22 Replace U1 ...

Page 23: ... Parts LED2 3 No TV image 1 Display fail 1 No scan channel 2 No signal or no connect antenna 3 LNA parts fault 4 Tuner parts fault 1 Scan channel 2 Check Nation Area and bandwidth on the Setting Connect antenna and select correct channel 3 First Replace the LNA Part s U3 If maintain the fail condition execute the next step 4 Second Replace Tuner Parts U4 4 Remote controller no function 1 can not s...

Page 24: ...035200001 U3 BGA622 low noise amplifier 2550062200001 U4 MT2060 tuner 2580206000001 U5 AIC1550PO_MSOP8 PWM 2560155000000 X1 12MHZ 5x3 2 crystal 2701200035600 X2 20 48MHZ 5x3 2 crystal 2702048035600 U10 LTC3406_TSOT23 5 PWM 2560340600000 D4 1N4148_SOD323 diode 2400414800000 D6 LED BLUE_0603 2410000300000 IRM1 IRM H238 TR2_SMD IR receiver 2460023800000 ...