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Flow Chart of Troubleshooting
9-14. GSM850 TX
PAM100 pin
:
17
about 2~3 dBm?
YES
RFS100,L101,C107,
C108,L121,L100,C106,
C112,C136
check&change
PAM100
pin30 : 3.7 V?
PAM100
pin 3 : 1.2V ?
NO
PAM100 pin17
about : -5dBm ?
PAM100
pin 4 : 2.8V?
PAM100
change or resolder
UCD300
pinF3,C313,C314
change oresolder
NO
PAM100
pin4 : 2.8 V?
YES
NO
BATTERY ,UCD300
check & change
YES
NO
Check R104
YES
YES
NO
YES
UCP200
check
NO
RFT100
pin31 : 2.9V ?
YES
RFT100
pin9,10 : 26MHz ?
Vp-p : 380mV?
RFT100
NO
pin1,2,3,4
:100mV?
UCD300
change or resolder
RFT100
change or resolder
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
NO
UCD300
check & change
NO
OSC100
change or resolder
YES
YES
9-29
CONTINOUS TX ON CONDITION
TX POWER DAC: 600 CODE APPLIED
CH : 190
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
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