Samsung SGH-M310 - Page 53

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Flow Chart of Troubleshooting
10-15
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10-2-3.
EGSM TX
PAM
100 pin
17
:
about
2~3
dBm?
RFS
100,
C130,
L101,C100,R100
check&change
PAM
100
pin
4:2.8
V?
U
CD300
check
&
change
PAM
100
pin
30 : 3.7
V?
NO
NO
YES
YES
NO
BATTERY
,
UCD300
check
&
change
PAM
100
pin
3 : 1.2V ?
YES
NO
PAM
100
pin1
7
about
:-5
dBm
?
YES
PAM
100
pin
4:2.8
V?
YES
YES
PAM
100
change or resolder
NO
U
CP200
check
R102
Check
NO
RFT100
pin
17 : 2.9V ?
U
CD300
pin
F3
,C311,
C312
change oresolder
YES
RFT100
pin
19,20 : 26
MHz
?
Vp-p
:380
mV?
RFT100
pin
2,3,22,23
:100
mV?
YES
UCD300
change or resolder
NO
NO
RFT100
change or resolder
YES
NO
OSC
100
change or resolder
CONTINOUS TX ON CONDITION
TX POWER DAC:
600
CODE APPLIED
CH
:62
RBW
: 100
KHz
VBW
:100
KHz
SPAN
:10
MHz
REF LEV.
:10
dBm
ATT.
:20
dB