Samsung GT-C5510 - Page 41

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Flow Chart of Troubleshooting
9-18
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9-2-7.
GSM
850/
GSM900 TX
U100 pin
11:
about
2~3
dBm?
RFS
100,
C114,C115
check&change
U1
00
pin
7 : 2.85
V?
U100
check
&
change
PAM
100
pin
4 : 3.7~4.2
V?
NO
NO
YES
YES
NO
BATTERY
,
UCP300
check
&
change
PAM
100
pin
5 : 1.2V ?
YES
NO
PAM
100
pin
8
about
:-5
dBm
?
YES
PAM
100
pin
3:2.8
V?
YES
YES
PAM
100
change or resolder
NO
U
CP300
check
Check R111
NO
C436
: 2.85V ?
U
CP300
change resolder
NO
CONTINOUS TX ON CONDITION
TX POWER DAC:
600
CODE APPLIED
CH
:
190/37
RBW
: 100
KHz
VBW
:100
KHz
SPAN
:10
MHz
REF LEV.
:10
dBm
ATT.
:20
dB