Advertisement
9. EGSM transmitter
NO
F1001 pin 12 :
about 2~3 dBm?
YES
CN1001, C1003
check&change
NO
U1001
pin4 : 3.7 V?
YES
U1001
pin 5 : 3V ?
YES
U1001 pin7
about : -5dBm
?
YES
U1001
change or
resolder
NO
U902
pin9,10,12,13
U102 pin39,C112
:-20dBm ?
change or resolder
YES
NO
U902
pin5,6,7,8 :1.7V
?
YES
U701
U1001
change
change or resolder
NO
F1001
pin13 : 2.8 V?
YES
U1001 pin9 :
about 4~5dBm?
YES
F1001
check & change
NO
BATTERY, U102
check & change
NO
U102 Pin 37, C113
check or resolder
NO
U902
pin14,23,26,32 :
2.8V ?
YES
NO
U903pin5,25,28
: 3V ?
YES
U903
pin 7 : 13MHz?
Vp-p: 950mV
YES
U903
pin9,10,11,1213
: 3V?
YES
U902
change or resolder
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-X400 Flow Chart of Troubleshooting
U702
check & change
NO
U102 pin33,C111
change or resolder
NO
NO
U701
check or change
4-15
CONTINUS TX ON CONDITION
TX POWER DAC:500 CODE APPLIED
CH:62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
OSC801
OSC801
pin 3 : 13MHz?
change or resolder
Vp-p : 950mV
YES
NO
OSC801
U102 pin33,C111
pin 4 : 3V ?
change or resolder
YES
U903
change or resolder
Advertisement
