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Flow Chart of Troubleshooting
9-17
9-2-3. GSM Tx
Check U101
pin 15 : about
2~3 dbm?
Check U101
pin 6 : 2.8V ?
Check and
change
CON100
,
L105,C103
Yes
Check and
change
UCP300
,
UCP200
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 5 :
about 4~5dbm?
Yes
No
Yes
PAM100 pin 15
: 3.7V ?
U101
check & change
No Battery,
UCP200
check & change
Yes
PAM100 pin 14 :
1.2V ?
No
UCP200
check
Yes
PAM100 pin 3
: 3V ?
No
UCP200
check
U101 pin 12,13,
28,29 : 2.9V ?
PAM100
change or resolder
UCP200
change or resolder
No
Yes
U101
change or resolder
Yes
PAM100 pin 5
:about -5dbm?
No
Yes
No
1
2
3
4
5
6
7
8
Summary of Contents for SGH-C240
Page 36: ...Flow Chart of Troubleshooting 9 4 3 2 4 1 ...
Page 38: ...Flow Chart of Troubleshooting 9 6 1 2 2 ...
Page 40: ...Flow Chart of Troubleshooting 9 8 1 2 ...
Page 42: ...Flow Chart of Troubleshooting 9 10 1 ...
Page 45: ...Flow Chart of Troubleshooting 9 13 1 2 3 4 4 5 ...
Page 47: ...Flow Chart of Troubleshooting 9 15 1 2 3 4 4 5 ...
Page 48: ...Flow Chart of Troubleshooting 9 16 ...
Page 50: ...Flow Chart of Troubleshooting 9 18 1 2 3 2 ...