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2-1-4. DCS TX
U103 pin#11
= about 2~3
dBm
YES
C103,CN100
check&change
U101
pin#6,17=
3.7V
YES
U101
pin#20 = 1.6V
YES
NO
U101 pin#3
about =-5dBm
U101
pin18=3V
YES
U101
change or resolder
NO
U401 pinA13,C421
change or resolder
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NO
NO
U103
pin#6 = 2.8V
YES
U101 pin#15
= about
4~5dBm
NO
YES
U103
check & change
NO
BATTERY
check & change
NO
U401
check
YES
NO
U401
check
U102
pin#9,32 =2.8V
YES
U102
pin8 = 13MHz
Vp-p = 950mV
YES
NO
U102
pin#4,5,6,7
=100mV
YES
U401
change or resolder
U102
change or resolder
SGH-E530 Flow Chart of Troubleshooting
U401
check & change
NO
OSC100
change or resolder
2-17
CONTINOUS TX ON CONDITION
TX POWER DAC : 600 CODE APPLIED
CH
: 62
RBW
: 100KHz
VBW
: 100KHz
SPAN
: 10MHz
REF LEV : 10dBm
ATT
: 20dB
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