How to detect pinout - GSM-Forum

ravi..gupta · 12-18-2009, 06:39

how to detect pinout (rx tx) with the help of multimeter, without using pinfinder box, which phone doesnt have mark inside

ravi..gupta · 12-19-2009, 05:37

plz need help, infinity team

cel_phon · 12-19-2009, 05:52

it will be best for you to use spider-man box to detect the pins..

detection with multimeter is lengthy procedure...

InfinityHelp · 12-19-2009, 14:43

hello!

1. set multimeter to voltage measuring.
2. power Onphone
3. set one multimeter probe to some grounded phone part
(if you cant find grounded part outside phone- you need to take out small thin wire from negative battery terminal)
4. with second probe touch one by one all phone pins (phone must be powered On)
(to get better result i would advice to set needle on the end of second probe)

memorise pins with voltage between 2,7-2,9volts.
those are tx/rx

12-18-2009, 06:39	#1 (permalink)
ravi..gupta Freak Poster Join Date: May 2009 Posts: 233 Member: 1028430 Status: Offline Thanks Meter: 65	How to detect pinout how to detect pinout (rx tx) with the help of multimeter, without using pinfinder box, which phone doesnt have mark inside

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12-19-2009, 05:37	#2 (permalink)
ravi..gupta Freak Poster Join Date: May 2009 Posts: 233 Member: 1028430 Status: Offline Thanks Meter: 65	plz need help, infinity team

12-19-2009, 05:52	#3 (permalink)
cel_phon No Life Poster Join Date: Jan 2009 Location: M_B_Din-PK Posts: 3,979 Member: 950201 Status: Offline Thanks Meter: 1,928	it will be best for you to use spider-man box to detect the pins.. detection with multimeter is lengthy procedure...

12-19-2009, 14:43	#4 (permalink)
InfinityHelp Product Supporter Join Date: May 2005 Location: uae Posts: 29,245 Member: 148515 Status: Offline Thanks Meter: 19,534	hello! 1. set multimeter to voltage measuring. 2. power Onphone 3. set one multimeter probe to some grounded phone part (if you cant find grounded part outside phone- you need to take out small thin wire from negative battery terminal) 4. with second probe touch one by one all phone pins (phone must be powered On) (to get better result i would advice to set needle on the end of second probe) memorise pins with voltage between 2,7-2,9volts. those are tx/rx