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Old 11-19-2009, 02:52   #1 (permalink)
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another pcb pinout n95 8gb dual sim, help


Phone is alive and is sp-locked.
but find problem finding it rx/tx
cpu is mt6225
charge connector: mini usb 5pin

here's pic

i had tried to use CM cable 5A, but failed detecting pins..
tried to use pin out from hf port, still no luck..
i also searched in this folder
c:\program files\infinity box\chinese miracle\pinout\
i couldn't find one matching this phone's pcb layout.
been searching forum, still didn't find one

then i tried this way:

please take a look how easy is examinate your phone for correct pinout.
as you can see- battery is attached (phone powered On or not- does not metter). One multimeter probe is on GND (metall shield)
with another you touch one by one all points.
when you see 2,7-2,9 volts- this is Tx/Rx
On my example i am touching correct data pin (voltage 2,7 volts)
i found 3 places w/ output 2.74v
here's pic

then i tried to combine it
as rx/tx, but pin finder still can't find it

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Old 11-19-2009, 03:59   #2 (permalink)
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i forgot to mention, i use ground also when searching, on gold line area left side pcb
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Old 11-21-2009, 16:15   #3 (permalink)
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try 1 and 2 again.
first time try 1 as tx, 2as rx
next time try 1 as rx, 2 as tx
both times your box ground pin 8 must be connected with grounded phone part
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