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RX TX Finding In China Mobile
Posted by Bijendra Kumar Narsinghani on 9:28 PM
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
--------------------------------------------------------------------------------
For More Information Continue Visit on http://buntygsm.blogspot.com M ore Use full Information Coming Soon. Wait For More New Information.
And Post Your Comments In All Post. Contact No +919411667220
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
--------------------------------------------------------------------------------
For More Information Continue Visit on http://buntygsm.blogspot.com M ore Use full Information Coming Soon. Wait For More New Information.
And Post Your Comments In All Post. Contact No +919411667220
Nokia 1202, 1203 Local Mode, Test Mode, Charger Not Supported Solution
Posted by Bijendra Kumar Narsinghani on 2:04 PM
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