Level
3
Repair
Distribution, transmission, or infringement of any content or data from this document without Samsung
’s
written authorization is
strictly prohibited.
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-7
8-3-2.
Initial
(
Lock up)
Initial Failure
(
Lock up when booting)
END
Check the AP Reset
RESET_INn
(
R340 or R339)
Change the UCP300
/
change the PBA
Check the oscillator clock waveforms.
32.768
KHz
:
OSC400.
OSC400 is operating when
phone is not in sleep mode
Check the OSC400.
(
Crack, open etc.)
Check the output clock waveforms and frequency.
※
Test condition
(
Oscilloscope setting)
:20.0
us.div
(
time division)
@ 32.768
Khz
Abnormal
Yes
Normal
No
Re-download SW the phone.
Change UCP300, U401
Download success
Abnormal
Change PBA
No
If Phone do not go download mode, boot code area
of EMMC is damaged.
It need to change the UME300(EMMC)
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