Samsung GT-I9500 Service Manual page 37

Level 3 Repair
8-3-1. Power On
Mobile phone does not power on.
Check the Battery Voltage.
Is it more than 3 . 8V?
Power-on the phone and
check the power-on sound
or motor Vibration.
Sound or Vibration is ok
Check the TAC1000
(soldering crack, open, etc)
Check the U600 output voltage
(C665 > 1V,C664 > 1V)
Check the Clock OSC5000
Is that frequency 24Mhz?
check the initial operation
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
Yes
?
No
Yes
Yes
Yes
Yes
END
Charging the battery by TA.
No
If its voltage level is extremely low(under 3.0V),
Yes
Change the FRONT-LCD ASSY
Abnormal
Change the TAC1000(Power-key switch)
And retry to the power-on operation.
If the output voltage is not satisfied with normal
No
condition, Change the U600.
※ Each voltage level has ±10% margin.
No
Change the OSC5000.
※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)
8-5
Change the battery.