![background image](http://html.mh-extra.com/html/samsung/sgh-s730i/sgh-s730i_service-manual_1191065054.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
2-30
3-2-3. PCS RX
Continuous RX ON
RF Input : 698 CH
Cell Power : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
U102 Check
Pin #13 (C101)
≥
-65dBm ?
U102 Check
Pin #1,#2
≥
-65dBm ?
U100 Check
Pin#8(L105),#9(L106)
≥
-65dBm ?
Check cable from antenna to ANT100
Check Antenna to cable contact
Check soldered status of L100, C100, ANT100
C100, L100, RFS100
Resolder or Change
U102 Resolder or Change
U100 Check
Pin#1,#18,#26,#11
=Clean VBAT?
U100 Check
Pin#13(C125)
≥
3.8V?
C102,C103,C104,C105,C106
,C107,C108
Check or resolder
Check U100
NO
NO
YES
YES
YES
NO
YES
U105 Check Pin #2(R120) :
13MHz ? Vpp : 2.9V?
U104 = 26MHz ?
Vpp : 50mV?
U100
Change or resolder
NO
NO
NO
U104
Change or resolder
U100
Change or resolder
YES
YES
Check soldered status of
L105, L106
YES
NO