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Chinese Models & Cloned Phones All China Phone Platforms like (MTK, Spreadtrum.. etc.) Cloned Nokia Nokla & Motorola . etc. Phones are included |
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06-21-2010, 11:09 | #1 (permalink) |
Junior Member Join Date: Feb 2010 Location: mysoore Age: 40
Posts: 14
Member: 1235175 Status: Offline Thanks Meter: 3 | Find Rx .tx Signles easyyy Find Rx .tx Signles easyyy HOW TO FIND RX .TX SIGNLES . It is tasted and also you can test it. 1 step is, we need to find GND from phone. 2 step is, we should power on phone (operation with dead phone: phone must be 100% dead by software)and take multimater put it to voltage. 3 multimeter (-) line put it GND and with (+) line check each connectors , and usually Tx= 1.8v or 2.8v and Rx=1.7v or 2.7v (it will be change by processor but strongly 1.7v or 2.8v not 3v or 4v) This way is too easy and you will save a more time. For example! You have got new brand China miracle phone with USB cable. It has got 12 pin. You must find (Infinity team give good Idea 1.2.3 punkts): 1) GND usually it has got 2 GND. (now we have got 10 pins) 2) We will uncheck USB + and USB- (VSS) just with checking by USB cable (now we have 8 pins) 3) By USB cable we also uncheck V bat+, ac adaptor + polarization (now we have 7 pins) 4) Now from this 7 pins you will find 1 or 3 not used pins (last operation we have 3 or 6 pins to find Rx Tx signals) 5) Now at last operation you should use good multimeter just to find Rx Tx with 1.7v-2.7v or 1.8v-2.8v 6) WHEN PHONE IS POWERD OFF TX AND GND WITH MULTIMETER MAKING BEEEEEP (DIOD TEST OPERATION), WHEN PHONE POWERED ON IT WILL SHOW LIKE DIOD RESISTANS 600-700 OHM BETWIN TX AND GND. |
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