Level 3 Repair
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8-4
8-3-1. Power On
Mobile phone does not power on.
END
No
Yes
Check the TP5001, C5027
TP5000 Voltage level.
Is it over 1.5V?
It Can be Damaged AP.
(UCP4000-1 or LPDDR3 Memory)
It is Needed to dump Memory or Check with S/W
Team to Analyze.
So, Change the PBA.
No
Yes
Check the U5001 output voltage
(C5062 > 1V,C5057 > 1V, C5061
> 1V)
If the output voltage is not satisfied with normal
condition, Change the U5001.
※
Each voltage level has ±10% margin.
No
Yes
Yes
Check the Battery Voltage.
Is it more than 3
.
8V?
Charging the battery by TA.
If its voltage level is extremely low(under 3.3V),
Change the battery.
Check the initial operation
Check the Clock OSC4000,
OSC5000
Is that frequency 24Mhz,
32khz each?
Change the OSC4000. or OSC5000
No
Yes
No
Change the FRONT-OCTA
or OCTA Con-to-Con Connector
Yes
Push the Power Button for 8 seconds. Then
wait 3 minutes, check the power-on sound or
motor Vibration or light on touch key.
Sound or Vibration is ok?