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5.Power Part Fault Finding Chart
Make sure the V_BAT
Check if
the voltage of
R374 >1.6V?
Check if
C412 and C417
are 2.85±5%
(V) ?
Check if the voltage of
C414 >1.5V?
Check if the
voltage of C415 is
1.5±5% (V)?
Do SiRF StarIII Fault
Finding Chart
is 4V
YES
NO
YES
NO
YES
NO
YES
NO
YES
Do SiRF StarIII Fault
Finding Chart or change
U318
Replace U320
with a new one
V_bat is not on
Replace U319 with a
new one
GTC
■
Service Manual
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