Samsung SM-A320F, Руководство по обслуживанию

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Troubleshooting
No Power
Step Check point Result value Defect point
1 Confirm the defect symptom - -
2
* * Analyse reasons of No-Power using the
Power & Current test jig Power test mode .
PASS
Battery, Battery terminal,
Physical Key
Leakage Current fail Go to the step 2.1
Power On Current fail Go to the step 3
2.1
Check the Resistance between JIG Power
V_Battery / VPH_PWR/ V_BAT and Ground.
(C701,C805) Normal (Over dozens of K
Ω)
Go to the step 5
Abnormal Capacitors for ESD protection
3
It’s possible to enter the download mode?
Yes Go to the step 3.1
No Go to the step4
3.1
Check if it’s rooted.
Rooted OOW
Normal S/W update
4 Try to do the boot recovery.
Pass Go to the step 3
Fail Go to the step 5
5 Check the voltage of C5023(=IFPMIC Output)
C5023 = Power supply voltage Go to the step 6
If not the correct value Replace the U5003(=IFPMIC)
6 Check the voltage of C5006(=PMIC Output)
C5006 = 1.8V Go to the step 7
If not the correct value Replace the U5004(=PMIC)
** Usage guide of the Power & Current test jig has been uploaded at GSPN. (Power & Current Tester_Rev4_150716.pdf)