Initial - Samsung GT-I9300 Service Manual

Level 3 Repair

8-3-2. Initial

Re-download SW the cell-phone.
Check the AP Reset
AP_N_RST_IN(R504) = 1.8V(High)
Check the oscillator clock waveforms.
32.768KHz : OSC500(TP213),
24Mhz : OSC400(C427)
Change UCP400,U501
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Initial Failure
Yes
Abnormal
Yes
Normal
Abnormal
Change PBA
END
No
Check the U500 and R504 (crack, open, etc.)
Check the OSC500, OSC400 and R408.
(Crack, open etc.)
Abnorma
Check the output clock waveforms and frequency.
l
※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)
8-8