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9-2-7. GSM850/ GSM900 TX
U100 pin11:
about 2~3 dBm?
YES
RFS100,C114,C115
check&change
PAM100
pin4 : 3.7~4.2 V?
YES
PAM100
pin 5 : 1.2V ?
YES
NO
PAM100 pin8
about : -5dBm ?
YES
PAM100
pin 3 : 2.8V?
YES
PAM100
change or resolder
NO
UCP300
change resolder
SAMSUNG Proprietary-Contents may change without notice
NO
NO
U100
pin7 : 2.85 V?
YES
NO
BATTERY ,UCP300
check & change
NO
Check R111
NO
UCP300
check
C436 : 2.85V ?
This Document can not be used without Samsung's authorization
TX POWER DAC: 600 CODE APPLIED
U100
check & change
9-18
Flow Chart of Troubleshooting
CONTINOUS TX ON CONDITION
CH : 190/37
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
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