User Guide

CCS Technical Documentation BB Description & Troubleshooting
Company Confidential RH-4
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Measure V
IO
,
V
CORE
,V
Flash1
,V
ANA
and VR3
voltages.
Are they OK?
Measure
32.768KHz sleep
clock form J404.
Is it OK?
Yes
No
Check L260-L265,
C260-C265,BSI line
and BATT line.
Check
R420,C420.R426,C4
26.If OK,change
UPP.
Check VBATT1-6,VIO,
VCORE,VFlash1,VANA VR3
lines.Are they OK?
No
Yes
Check BSI/BTEMP
lines,If OK,
UEM regulators are
not working,change
UEM.
Check
B200,C209,C210
Check
R610,C603,605,606,
607,R617.If
OK,change N601.
Jammed
page2
Measure
SleepClk from B200. Is it
OK?
No
Yes
Change UEM
Measure 26MHz
RFClk form R420.Is it OK?
No
Measure
26MHz from B601.Is it
OK?
No
Yes
No
Yes
Measure PURX
signal from testpoint J402.Is it
high(1.8V)?
Yes
Change UEM
No
Yes
Phone is
jammed