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SAMSUNG Proprietary-Contents may change without notice
SGH-X660 Flow Chart of Troubleshooting
2-
22
This Document can not be used without Samsung's authorization
U102
check & change
BATTERY
check & change
U102
check
U102
check
U701
check & change
U102
check
OSC701
change or resolder
2-2-4. EGSM TX
U701 pin #12
= about
32~33 dBm
C704, L708, L709, RFS701
check&change
U701
pin #6, #9
= 2.9V
The voltage of
C724
≥
3.7v
NO
NO
YES
YES
NO
U701
pin #8 = 1.2V
YES
NO
YES
U701
pin #11 = about
4~5dBm
NO
NO
U702
pin#12, 13 =
2.9V
U702
pin#30 : 26MHz
&
Vp-p : 900mV?
U702
pin#4,#5,#6,#7
= 1.5V
U102
change or resolder
U702
change or resolder
YES
NO
CONTINOUS TX ON CONDITION
TX POWER DAC: 500 CODE APPLIED
CH : 30
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
U701
pin #4 : Low
pin #5 : Low
NO
NO
1
6
2
5
2
4
2
2
3
2
YES
YES
YES
YES