Please Take Note of the Following Items before Attempting to Find VccQ:
1. You must FIND CMD Pinout First using STEP 2 Above
When you Find the CMD Pinout, the VccQ is ALWAYS on the other side of the CMD Resistor Test Point.
If you want to find a better location for VccQ for easier Soldering Purposes, then you can use a Multitester on Continuity
Test and check which Capacitors around the eMMC will "BEEP" when you test it against the VccQ Test Point on the
opposite side of the CMD Resistor.
Here is an Example of other VccQ Locations Found using Continuity Test Against VccQ Test Point on CMD Resistor.
For Voltage Value of VccQ, you can use 1.80V or 2.80V.
If you want to know the ACCURATE Voltage to use, then you can use multitester DC Voltage TEST to check what
is the actual VOLTAGE your VccQ gets when USB Cable is connected to the PCB. Sometimes the voltage will only
appear for less than 5 seconds, so be sure to catch it quickly. Ask someone else to connect the USB Cable while
you position your multitester's RED and BLACK prongs on the Phone PCB.
1. You must FIND CMD Pinout First using STEP 2 Above
When you Find the CMD Pinout, the VccQ is ALWAYS on the other side of the CMD Resistor Test Point.
If you want to find a better location for VccQ for easier Soldering Purposes, then you can use a Multitester on Continuity
Test and check which Capacitors around the eMMC will "BEEP" when you test it against the VccQ Test Point on the
opposite side of the CMD Resistor.
Here is an Example of other VccQ Locations Found using Continuity Test Against VccQ Test Point on CMD Resistor.
For Voltage Value of VccQ, you can use 1.80V or 2.80V.
If you want to know the ACCURATE Voltage to use, then you can use multitester DC Voltage TEST to check what
is the actual VOLTAGE your VccQ gets when USB Cable is connected to the PCB. Sometimes the voltage will only
appear for less than 5 seconds, so be sure to catch it quickly. Ask someone else to connect the USB Cable while
you position your multitester's RED and BLACK prongs on the Phone PCB.
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قوانين منتدى التونسية للمحمول ( المرور من هنا واجب )
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كتبت وقد أيقنت يوم كتابتي بأن يدي تفنى ويبقى كتابها فإن كتبت خيرا ستجزى بمثله وإن كتبت شراً عليها حسابها...
قوانين منتدى التونسية للمحمول ( المرور من هنا واجب ) طريقة الإنظمام إلي مجموعة أعضاء سبور € GSM Tn هام لكل الأعضاء الجدد {اخي ..}، كنت عضومنذُ{8 أيام الأخيرة..}كتبت وقد أيقنت يوم كتابتي بأن يدي تفنى ويبقى كتابها فإن كتبت خيرا ستجزى بمثله وإن كتبت شراً عليها حسابها...