1600 China phone need pinout - GSM-Forum

kasamiko · 05-08-2009, 08:45

This kinda weird...1600 China Phone with BAD SOFTWARE problem

tried this pinout..but wont connect..noticed that all the 6 TP on the pcb nothing is connected to GND as indicated in the picture below..

this is the pcb....

i tried using pin finder but still can't find the correct pinout..tried using other tools with auto pinout search but failed to find it..

InfinityHelp · 05-08-2009, 19:07

hello!

attach phone battery and measure voltages on those test points.
2,7-2,9 volts will be indicated on Tx/Rx pins

kasamiko · 05-09-2009, 03:51

Ok I'll try and post result later..

maxieboy · 05-09-2009, 11:22

jus fallow this steps

1. set multimeter to voltage measuring.
2. check bettery voltage, it should be more than 3,7volts
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, you can use rps to power on unit)
(to get better result i would advice to set needle on the end of second probe)

memorise pins with voltage between 2.3 to 2.9volts.
those are tx/rx

05-08-2009, 08:45	#1 (permalink)
kasamiko No Life Poster Join Date: Oct 2003 Location: Philippines Posts: 898 Member: 42604 Status: Offline Thanks Meter: 187	1600 China phone need pinout This kinda weird...1600 China Phone with BAD SOFTWARE problem tried this pinout..but wont connect..noticed that all the 6 TP on the pcb nothing is connected to GND as indicated in the picture below.. this is the pcb.... i tried using pin finder but still can't find the correct pinout..tried using other tools with auto pinout search but failed to find it..

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05-08-2009, 19:07	#2 (permalink)
InfinityHelp Product Supporter Join Date: May 2005 Location: uae Posts: 29,245 Member: 148515 Status: Offline Thanks Meter: 19,534	hello! attach phone battery and measure voltages on those test points. 2,7-2,9 volts will be indicated on Tx/Rx pins

05-09-2009, 03:51	#3 (permalink)
kasamiko No Life Poster Join Date: Oct 2003 Location: Philippines Posts: 898 Member: 42604 Status: Offline Thanks Meter: 187	Ok I'll try and post result later..

05-09-2009, 11:22	#4 (permalink)
maxieboy No Life Poster Join Date: Jun 2006 Location: Philippines Posts: 1,753 Member: 302596 Status: Offline Thanks Meter: 784	jus fallow this steps 1. set multimeter to voltage measuring. 2. check bettery voltage, it should be more than 3,7volts 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, you can use rps to power on unit) (to get better result i would advice to set needle on the end of second probe) memorise pins with voltage between 2.3 to 2.9volts. those are tx/rx