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STEP 1 : How to make TP Cable for eMMC PIN Finder

Very Simple TP Cable Schematics
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_FINDER_SCHEMATICS


Sample of Home Made Cable
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_FINDER_SAMPLE


STEP 2 : How to find CLK and CMD

Please Take Note of the Following Items before Attempting to Find CLK and CMD:

1. Make sure you connect Positive (+) and Negative (-) Terminals Properly and Correctly.
2. Make sure POWER BUTTON is ALWAYS PRESSED
3. DO NOT Connect USB Cable to Phone
3. Allow at least 2 Tries per possible Location on the PCB
4. DO NOT Exert Too Much Force on the Resistors as they may COME OFF!!!
5. For Exynos Based Phones, you can only Find CLK using this method. CMD Can be found using another Method.
6. Not all Phones have exposed CLK or CMD Locations on the PCB.
7. Not all Phones are supported with this NEW TP FINDER Method. ATF Team will continue to improve it via UPDATES.


STEP 1: Connect Power Positive (+) and Negative (-) to the Phone's Battery Terminal
STEP 2: Make Sure Power Button is Always Pressed. Use Rubber Band or Tie Cables.
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_CONNECT_POWER


STEP 3: Setup ATF Software settings such as REPEAT and INTERVAL for your convenience
REPEAT <--- Number of Times TP Finder will Loop Itself Automatically
INTERVAL <--- Delay in Seconds before the next TP Finder Operation will Start
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_FINDER_SOFTWARE


STEP 4: Start Connecting Test Point PIN to Resistors/TP Pads on the Phone's PCB around the eMMC Area.
Wait for Message "Please Check Another Location..." before trying other TP Locations
On ATF BIG Chrome Box, change TP Location when GREEN LED will Power OFF
On ATF Nitro/Lightning Box, change TP Location when BLUE LED will Power OFF
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_FIND_TP

In this Example, I tried all the Locations that were marked with RED
DO NOT TRY TO TP a CAPACITOR, it is NEVER CORRECT
Capacitors are BROWN in COLOR
Resistors are BLACK in COLOR
ONLY TRY TO TP Resistors and Test Point Pads around eMMC Area
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_FIND_ME


When a correct Test Point is Found, you will see similar Message Below.
The message also shows you the PINOUT of ATF RJ-45 Socket for the proper connection of the Test Point Found.
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_TP_FINDER_FOUND



If Test Point is not Found Around the eMMC Area, you can try looking for it around the CPU Area.



STEP 3 : How to find VccQ

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.
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_Finder_VccQ


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.

===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_Finder_VccQ_Found


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.


STEP 4 : How to find Vcc

<<< FOR QUALCOMM BASED PHONES, YOU DO NOT NEED VccQ and VCC >>>
<<< You just need to Connect USB Cable to Phone PCB >>>
<<< Proceed to STEP 5 on How to find DATA Test Point >>>

You need to Prepare your External Power Adapter with a TEST POINT PIN on 3.30v Like This:
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_VCC_FINDER_SCHEMATICS



1. Solder CLK Test Point Found from STEP 2 into the Phone PCB
2. Solder CMD Test Point Found from STEP 2 into the Phone PCB
3. Solder VccQ External Power 1.80v~2.80v from STEP 3 into the Phone PCB
4. Solder GROUND Connection from ATF RJ-45 to the Phone PCB.
5. Solder GROUND Connection from External Power Adapter to the Phone PCB.

===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_VCC_FINDER_CONNECTIONS


On ATF Software, Make the necessary Settings for eMMC Finder Loop:

===>>> ATF eMMC Test Point Finder Tutorial <<<=== TP_FINDER_VCC_SETTINGS


In this Example, I tried all the Locations that were marked with RED
DO NOT TRY TO TP a RESISTOR, it is NEVER CORRECT for VCC
Capacitors are BROWN in COLOR
Resistors are BLACK in COLOR
ONLY TRY TO TP Capacitors and Test Point Pads around eMMC Area
===>>> ATF eMMC Test Point Finder Tutorial <<<=== EMMC_Finder_VCC




STEP 5: How to find DATA


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