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Flow Chart of Troubleshooting
10-18
10-2-4. GSM Tx
Check
UCD101pin 15
: about 2~3
dbm?
Check
UCD101
pin 6 : 2.8V ?
Check and
change
RFS100
,
L100,L111
Yes
Check and
change
UCP201
,
UCD107
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 11:
about 4~5dbm?
Yes
No
Yes
PAM100 pin 7 :
3.7V ?
UCD101
check & change
No
Battery,
UCD107
check & change
Yes
PAM100 pin 8 :
1.2V ?
No
UCD107
check
Yes
PAM100 pin 6 :
3V ?
No
UCD107
check
UCD101 pin
12,13,28,29 :
2.9V ?
PAM100
change or resolder
UCD107
change or resolder
No
Yes
UCD101
change or resolder
Yes
PAM100 pin 12:
about -5dbm?
No
Yes
No
1
2
3
4
5
6
7
8
3
7
2
4
5
6
8
1
2