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2-2-3. EGSM TX
F101
pin 5 :
①
about 2~3
dBm?
YES
C103,RFS100
③
check&change
PAM100
pin4 : 3.7 V?
YES
PAM100
pin 6 : 1.6V ?
YES
PAM100 pin7
NO
about : -5dBm
?
YES
PAM100
pin 2 : 3V?
YES
PAM100
change or resolder
NO
U300
⑥
pinA13,C314
change or resolder
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
NO
NO
F101
pin11 : 2.8 V?
YES
PAM100
pin10
④
: about
4~5dBm?
NO
YES
F101
check & change
NO
BATTERY
check & change
NO
U300
check
NO
U300
check
U100
⑤
pin12,13,25,26,
28 : 2.8V ?
YES
U100
pin30,31 :
26MHz ?
Vp-p : 950mV?
YES
NO
U100
pin4,5,6,7:100m
V?
YES
U300
change or resolder
U100
change or resolder
SGH-C120 Flow Chart of Troubleshooting
U300
②
check & change
NO
OSC100
⑦
change or resolder
2-19
CONTINOUS TX ON CONDITION
TX POWER DAC: 600 CODE APPLIED
CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
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