Flow Chart of Troubleshooting
9-18
9-2-5. DCS/PCS Tx
CONTINUS TX ON CONDITION
TX POWER DAC : 560 CODE
APPLIED
CH : 698CH(DCS),
660CH(PCS)
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV : 10dBm
ATT : 20dB
Check U101
pin 6 : 2.8V ?
U100 pin 1 :
about 4~5dbm?
No
Check U100
pin 16 : about
2~3 dbm?
No
Check and
change
UCP201
,
UCP300
Yes
No
Yes
Check and
change
RFS601
,
R102,L103
Yes
U100
check & change
No
Battery,
UCP300
check & change
Yes
No
U100
check
Yes
No
Yes
No
UCP300
check
Yes
U100
change or resolder
U100 pin 12,13,
28,29 : 2.9V ?
No
UCP300
change or resolder
Yes
U101
change or resolder
U100 pin 7 :
3.7V ?
U100 pin 8 :
1.2V ?
U100 pin 12
:
about -5dbm?
U100 pin 6 :
3V ?
1
2
3
4
5
6
7
8
1
3
2
4
5
6
7
8