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Flow Chart of Troubleshooting
10-19
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10-2-3. EGSM Tx
Check
PAM100 pin 17
: about 2~3
dbm?
Check
PAM100
pin 4 : 2.8V ?
Check and change
RFS100,C108,C111,
L102,L103,L104
Yes
Check and
change
UCP200
,
U300
No
CONTINUS TX ON CONDITION
TX POWER DAC : 554 CODE
APPLIED
CH : 62ch
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV : 10dBm
ATT : 20dB
PAM100 pin 27:
about 4~5dbm?
Yes
No
Yes
PAM100 pin 30
:
3.7V ?
U100
check & change
No
Battery,
U300
check & change
Yes
PAM100 pin 3 :
1.2V ?
No
U300
check
Yes
PAM100 pin 4 :
2.8V ?
No
U300
check
U100 pin
2,3,22,23 :
100mV ?
PAM100
change or resolder
U300
change or resolder
No
Yes
U100
change or resolder
Yes
PAM100 pin 17:
about -5dbm?
No
Yes
No
Summary of Contents for SGH-B300
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