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4.Passive Path Fault Finding Chart
Remove the GPS
active antenna
See if the GPS
antenna contacts
with U317 well?
Check if C393.Pin2 and
C419 Pin 1 get connection
directly?
Check if the voltage of
C399 is 3±10% (V)?
Check if the voltage
of C785.Pin1 is
2.85±5% (V) ?
Replace U314 or do
SIRF StarIII Fault
Finding Chart
NO
YES
NO
YES
NO
YES
YES
Replace the GPS antenna
with a new one
Change CON302
with a new one
Check if the voltage of
C385.Pin1 is 2.85±5%
(V)?
YES
Replace U310 with a
new one
GTC
■
Service Manual
NO
Do the Power Part
Fault Finding Chart
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