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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-
13
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U601 CHECK
pin#12
≥
-65dBm
10-2.RF
10-2-1. EGSM RX
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
NORMAL CONDITION
catch the channel
Check soldered status of
L611, C633, Ant.
U602
pin #12, #13 = 2.9V
U601 CHECK
pin#16
≥
-65dBm
U602 CHECK
pin#21,#22
≥
-65dBm
RFS601, L604, L603, C604
resolder or change
U601
resolder or change
C701, C702, C703, F701
resolder or change
Check the VRF_2.9
of the UCD102
OSC601 CHECK
pin #1 : 26MHz &
Vp-p : 900mV
OSC601
change or resolder
U602
resolder or change
UCD102 CHECK!!
U602
pin#1,#2,#3,#28
Vp-p = 100mV
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
1
2
3
4
5
6
7