User Guide

RH-4 Company Confidential
BB Description & Troubleshooting CCS Technical Documentation
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Jammed
page2
no
yes
Re-test
Phone shutdown
after 30sec
Yes
Measure watchdog
signal CBUSDA from
testpoint J407.Is it OK?
(about 60ns Burst)
No
No
Change UPP
Measure DBUSClk
13MHz signal
form testpoint J413.
Is it OK?
No
Yes
Read Phone Info.
Is it OK?
Change UEM
Measure FBUSRX
during phone info read
from testpoint J412.
Is it OK?
No
Yes
No
Yes
Measure FBUSTX
during phone info read
from testpoint J411.
Is it OK?
Change UPP
No
Change UEM
Yes