Gps Mode - Samsung SCH-A310 Service Manual

Trouble Shooting

8-4 GPS mode

8-4-1 Low Sensitivity
Enter GPS Test Mode
Check RF
Cable connetion
YES YES
YES YES
Check LO
Freq=1391.82MHz?
YES YES YES YES
Check LO Level
P>=-5dBm
YES YES YES YES
Check GPS RF path
END
NO NO
NO NO
NO NO Check V. on pin4
NO NO
of Osc112V<=0.3V
NO NO
NO NO
Check V. on pin3
of OSC112 V=2.7V
Check V. on pin3
of OSC112 0<V 2.7
NO NO NO NO
SAMSUNG Proprietary-Contents may change without notice
Test Again.
NO NO
NO NO
YES YES YES YES
NO NO
NO NO
YES YES
YES YES
NO NO NO NO
Check respective part, neighbor
matchig circuit or replace the
part, if required.
8-10
Check MSM GPIO port.
Check Power Circuit.
Check PLL.