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Troubleshooting
Power on but no operation (freezing)
Step Check point Result value Defect point
1 Confirm the defect symptom - -
2
* * Analyse reasons of No-Power using the
Power & Current test jig.
PASS Go to the step 1
Leakage Current fail Refer to the No-power Troubleshooting
Power On Current fail Go to the step 2.1
2.1 Try to do the boot recovery.
Solved Boot area in S/W
Not solved Go to the step 7
3 It’s possible to enter the download mode?
Y e s Go to the step 3.1
No Go to the step 4
3.1 Check if it’s rooted.
Rooted OOW
Normal Go to the step 4
4 Enter the safe mode, and check if powers up.
Solved 3
rd
party Apps.
Not solved Go to the step 5
5 Perform full reset.
Solved S/W or 3
rd
party Apps
Not solved Go to the step 6
6 Upgrade software to the latest version.
Solved S/W
Not solved Go to the step 7
7 Check the voltage of C4052(eMMC)
C4052 = 1.8V PBA
If not the correct value Replace the eMCP(eMMC)
** Usage guide of the Power & Current test jig has been uploaded at GSPN. (Power & Current Tester_Rev4_141226.pdf)
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