Eazy way to fix sim problem all nokia models - GSM-Forum

selldok · 11-30-2009, 16:35

Its a gift for biginers,
when ever u will face insert sim problem in nokia then u need to chek ur fone by this procidure,see the picture below,1st of all chek readings on sim connector by multimeter,put red prob on ground surface of motherboard and take reading on sim connector's pin one by one with black prob if u have digital multimeter,and if u have analog multi meter then u have to put blck prob on ground.....
Ther is one pin shows full reading wich is groung other one dont give any reading bcoz this is not going on cuircit and called open,now other 4 have to give some readings of one of them dont show reading then u need to change sim ic if broken point is one of them wich r going through sim ic,if those point wich is directly goes on uem then its no need to b change sim ic then u need to reflow or change uem or power ic,if u change sim ic and problem still going same then u have to reflow or change sim ic or power ic,
now if any body has confused to understand that ask question to me i will try to teach u,,no need to reply thanks :d

sahed07860 · 11-30-2009, 17:09

where is picture. thaks for post......................

jana1_2008 · 11-30-2009, 17:16

No picture help...........................

selldok · 11-30-2009, 17:35

here is pic...........

mayor_NY · 11-30-2009, 17:37

adds little, bro:
In the simcard pin must consist of 6 Pin .. which consists of:

simclock
simdata
simreset
Vsim
Ground
Nc (Not Connetcetd)

all phones must consist of only 6 this pin ....

If we look at it ... workflow from the sim card is ....
From connector simcard ===> ====> simcard Emif Ic Power

This applies to all phones ....

This point we should really understand .... 'coz will greatly determine the pace of work will we do ....

PIN2 is important that we have noticed is all the PIN2 must be in a state connected to each other in accordance with the path traveled ... except for NC path / not connected or not connect to
simcard in determining damages is ....

1. replace first simcard ... do not get our phone coz not read simcard simcard is faulty ...
2. If simcard is ok ... measure of resistance in the 5 pin ... especially vsim line, data sim, sim sim and reset the clock ....

to determine which is the connector PIN2 ... the steps we have to do is to determine which point on the Ground PIN2 SIM card connector is ....

You have to understand ... that the ground must be in one corner of the six of these PIN2.

to determine the next titik2 is ....

that is certain!!
ground position to deal with Vsim
On the ground must have NC
The next order of his next order for sure as the picture above ....

Well,.,, When we know the PIN2 in accordance with its name ... then the next step is ... by measuring the resistance in the pin data, clock, reset and vsim ....

if there are no barriers to rise, ... it can be sure that your cell phone damage is a broken line between emif simcard with connectors or damage to emif simcard ....

steps you have to do is ... by lifting emif sim card ... then measures the relationship between the broken lines are appropriate track down emif simcard ...

if it turns out fine lines are not broken alias .. it can be in making sure that ... emif simcard must be BROKEN! the solution is to replace or emif simcard simcard jumper emif accordance with the track ...

next ......

if you find that after the measurement obstacles in ... all the normal barriers .. (if necessary compare with those in the normal cell phone)
then ... steps that must be done is to perform voltage measurements at the connector Vsim .... measuring point measured in accordance with the determination of this Vsim pin ...

Vsim measurements must be made at the first phone in the light ... Why? phone karna first time live ... then he will check the existence of simcard and will appear a voltage of 1.8 v. .. if the phone does not detect the presence of the sim card that had a voltage of 1.8V will fall directly on the point NOL ... but if the phone can detect the card then the voltage will rise to 3-volt ...

so do not be surprised .. if the phone had been living a few seconds ... you will not be able to measure the presence of voltage 1.8V sim card registration is ... This is a common and become.

more ... If after making these measurements was the voltage that the voltage was NOL / no voltage ... then it must do the best is to replace the Power Ic .. karna voltage comes from UEM ... but .. karna replace power IC has a big risk .... and also requires a large cost due to power ic pretty good price ... then ... we just outsmart them to get the voltage from another voltage ...

Whether the voltage from which we should get??

you do not take from another 1.8V voltage .. example taken from the VIO ... karna chances of success will be very small ....

Why?

coz when simcar read ... must have a voltage of 3 volts instead .... 1.8V
voltage is 1.8 base voltage to detect the presence of simcard ...

The most appropriate is ... by making jumpers from 3-volt voltage options ....

coz in our mobile 3-volt voltage very rare .. then we usually jumper of voltage 2.8v .. example from Vaux voltage of 2.8v .....

The next step ....

if we measure it on the line resistance is not normal Vsim .. height .. then we have to do is to remove Capasitor the path leading to the ground ..coz Capasitor damage to the track can be caused by illegible simcard ...
Next ........

If we measure it all turned out normal barriers ... The next step is to raise emif simcard ... then measure the resistance of the simcard that led emif Ic Power with in emif ... the goal is to find out .. whether the emif ic simcard and broken power lines there ....

if there is no rising resistance value .. it can be in making sure that happens off the path between the power emif and ic .. then the solution is to jumper between ic emif simcard into power in accordance with the broken lines ...
If after doing measurements .. were all normal barriers .. emif jumper simcard the first ... if after jumper emif normal simcar direct phone .. it can be in making sure emif damage ....

but if it turns out after menjumper emif ... no sim card also reads ... it can be in making sure damage to the power ic ....

selldok · 11-30-2009, 18:25

@mayor ny
thanks for nice information.............................

11-30-2009, 16:35	#1 (permalink)
selldok Freak Poster Join Date: May 2005 Location: greece(athens) Age: 42 Posts: 144 Member: 142723 Status: Offline Thanks Meter: 32	Eazy way to fix sim problem all nokia models Its a gift for biginers, when ever u will face insert sim problem in nokia then u need to chek ur fone by this procidure,see the picture below,1st of all chek readings on sim connector by multimeter,put red prob on ground surface of motherboard and take reading on sim connector's pin one by one with black prob if u have digital multimeter,and if u have analog multi meter then u have to put blck prob on ground..... Ther is one pin shows full reading wich is groung other one dont give any reading bcoz this is not going on cuircit and called open,now other 4 have to give some readings of one of them dont show reading then u need to change sim ic if broken point is one of them wich r going through sim ic,if those point wich is directly goes on uem then its no need to b change sim ic then u need to reflow or change uem or power ic,if u change sim ic and problem still going same then u have to reflow or change sim ic or power ic, now if any body has confused to understand that ask question to me i will try to teach u,,no need to reply thanks :d

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11-30-2009, 17:09	#2 (permalink)
sahed07860 Freak Poster Join Date: Dec 2007 Location: bangladesh, chittagong Posts: 369 Member: 648453 Status: Offline Thanks Meter: 82	where is picture. thaks for post......................

11-30-2009, 17:16	#3 (permalink)
jana1_2008 Freak Poster Join Date: Oct 2008 Posts: 142 Member: 878833 Status: Offline Thanks Meter: 38	No picture help...........................

11-30-2009, 17:37	#5 (permalink)
mayor_NY Freak Poster Join Date: Oct 2009 Posts: 152 Member: 1150643 Status: Offline Thanks Meter: 40	adds little, bro: In the simcard pin must consist of 6 Pin .. which consists of: simclock simdata simreset Vsim Ground Nc (Not Connetcetd) all phones must consist of only 6 this pin .... If we look at it ... workflow from the sim card is .... From connector simcard ===> ====> simcard Emif Ic Power This applies to all phones .... This point we should really understand .... 'coz will greatly determine the pace of work will we do .... PIN2 is important that we have noticed is all the PIN2 must be in a state connected to each other in accordance with the path traveled ... except for NC path / not connected or not connect to simcard in determining damages is .... 1. replace first simcard ... do not get our phone coz not read simcard simcard is faulty ... 2. If simcard is ok ... measure of resistance in the 5 pin ... especially vsim line, data sim, sim sim and reset the clock .... to determine which is the connector PIN2 ... the steps we have to do is to determine which point on the Ground PIN2 SIM card connector is .... You have to understand ... that the ground must be in one corner of the six of these PIN2. to determine the next titik2 is .... that is certain!! ground position to deal with Vsim On the ground must have NC The next order of his next order for sure as the picture above .... Well,.,, When we know the PIN2 in accordance with its name ... then the next step is ... by measuring the resistance in the pin data, clock, reset and vsim .... if there are no barriers to rise, ... it can be sure that your cell phone damage is a broken line between emif simcard with connectors or damage to emif simcard .... steps you have to do is ... by lifting emif sim card ... then measures the relationship between the broken lines are appropriate track down emif simcard ... if it turns out fine lines are not broken alias .. it can be in making sure that ... emif simcard must be BROKEN! the solution is to replace or emif simcard simcard jumper emif accordance with the track ... next ...... if you find that after the measurement obstacles in ... all the normal barriers .. (if necessary compare with those in the normal cell phone) then ... steps that must be done is to perform voltage measurements at the connector Vsim .... measuring point measured in accordance with the determination of this Vsim pin ... Vsim measurements must be made at the first phone in the light ... Why? phone karna first time live ... then he will check the existence of simcard and will appear a voltage of 1.8 v. .. if the phone does not detect the presence of the sim card that had a voltage of 1.8V will fall directly on the point NOL ... but if the phone can detect the card then the voltage will rise to 3-volt ... so do not be surprised .. if the phone had been living a few seconds ... you will not be able to measure the presence of voltage 1.8V sim card registration is ... This is a common and become. more ... If after making these measurements was the voltage that the voltage was NOL / no voltage ... then it must do the best is to replace the Power Ic .. karna voltage comes from UEM ... but .. karna replace power IC has a big risk .... and also requires a large cost due to power ic pretty good price ... then ... we just outsmart them to get the voltage from another voltage ... Whether the voltage from which we should get?? you do not take from another 1.8V voltage .. example taken from the VIO ... karna chances of success will be very small .... Why? coz when simcar read ... must have a voltage of 3 volts instead .... 1.8V voltage is 1.8 base voltage to detect the presence of simcard ... The most appropriate is ... by making jumpers from 3-volt voltage options .... coz in our mobile 3-volt voltage very rare .. then we usually jumper of voltage 2.8v .. example from Vaux voltage of 2.8v ..... The next step .... if we measure it on the line resistance is not normal Vsim .. height .. then we have to do is to remove Capasitor the path leading to the ground ..coz Capasitor damage to the track can be caused by illegible simcard ... Next ........ If we measure it all turned out normal barriers ... The next step is to raise emif simcard ... then measure the resistance of the simcard that led emif Ic Power with in emif ... the goal is to find out .. whether the emif ic simcard and broken power lines there .... if there is no rising resistance value .. it can be in making sure that happens off the path between the power emif and ic .. then the solution is to jumper between ic emif simcard into power in accordance with the broken lines ... If after doing measurements .. were all normal barriers .. emif jumper simcard the first ... if after jumper emif normal simcar direct phone .. it can be in making sure emif damage .... but if it turns out after menjumper emif ... no sim card also reads ... it can be in making sure damage to the power ic ....

11-30-2009, 18:25	#6 (permalink)
selldok Freak Poster Join Date: May 2005 Location: greece(athens) Age: 42 Posts: 144 Member: 142723 Status: Offline Thanks Meter: 32	@mayor ny thanks for nice information.............................