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CCS Technical Documentation
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Start
Is the FBUS
TX-line HIGH
after startup?
Yes
Is FBUSTX-line
set to LOW after
it has been
HIGH?
Yes
Wrong
manufactor ID
and device ID
No
Is phone totally
dead?
No
Phone doesn't
start up or it's
jammed?
No
End (retest)
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Measure BSI-pulse
No
during Flash
operation. Is it OK?
Yes
Measure FBUSTX-line
during Flash operation
(J411). Is it ~1.8V?.
No
Yes
Yes
Yes
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Troubleshooting Instructions
Check BSI-line including
No
X100,C100,C240,R202
No
If OK, change UEM
Yes
NHL-4/4U
and R206.
Check R104.
Change UPP
Change Flash
Phone is dead
Phone is
jammed
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