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SAMSUNG Proprietary-Contents may change without notice
SGH-V100 Flow Chart of Troubleshooting
3-
29
5. EGSM Transmitter
F950 pin 12 :
about 2~3
dBm?
CN950, C950
check&change
F950
pin13 : 2.8 V?
U700,U701
check & change
U951 pin4 :
about
4~5dBm?
F950
check & change
U951
pin 3,6 : 3.7
V?
NO
NO
YE S
YE S
YE S
NO
NO
BATTERY, U100
check & change
U951
pin 2 :1.2V ?
YE S
NO
U950
pin4,9 : 3V?
NO
U100pin44, C115
check & change
U951 pin1
about :
-5dBm ?
YE S
U951
pin 7 : 3V?
YE S
YE S
U951
change or
resolder
NO
U700
check
U950
pin5,6,7 :1.2V
?
YE S
NO
U700
check
U950 pin 12 :
about -20dBm ?
NO
F952
check or change
U950
pin 16 :1.2V ?
NO
U950
check or
resolder
YE S
YE S
YE S
NO
U901
pin14,23,26,32
: 2.8V ?
U100 pin46,C114
change or
resolder
YE S
U901
pin9,10,12,13
:-20dBm ?
U901
pin5,6,7,8
:1.7V ?
YE S
U700
change
NO
NO
U1001
change or
resolder
YE S
U902pin5,25,2
8 : 3V ?
NO
U100 pin39,C116
change or
resolder
NO
U902
pin 7 :
13MHz?
Vp-p: 950mV
YE S
U902
pin9,10,11,121
3: 3V?
YE S
YE S
U901
change or
resolder
U703
pin 3 :
13MHz?
Vp-p :
950mV
U703
change or
resolder
U700
check or change
U703
pin 4 : 3V ?
U100 pin39,C116
change or
resolder
U902
change or
resolder
NO
NO
YE S
NO
YE S
NO
CONTINUS TX ON
CONDITION
TX POWER DAC:500 CODE APPLIED
CH:62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB