Samsung SGH-M600S Service Manual page 32

Flow Chart of Troubleshooting
3-2-4. DCS TX
PAM100 pin :
12
about 2~3 dBm?
YES
C109,RFS100
check&change
PAM100
pin7 : 3.7 V?
PAM100
pin 8 : 1.6V ?
NO
PAM100 pin1
about : -5dBm ?
PAM100
pin 4 : 0V?
PAM100
change or resolder
UCP300pinA13,C316
change or resolder
NO
PAM100
pin6 : 2.8 V?
YES
NO
BATTERY
check & change
YES
NO
R109
Check
YES
YES
NO
YES
UCP300
check
NO
U100
pin13 : 1.9V ?
YES
U100
pin30,31 : 26MHz
?
Vp-p : 380mV?
NO
U100
pin4,5,6,7 :100mV?
YES
UCP300
change or resolder
U100
change or resolder
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NO
UCP300
check & change
NO
OSC100
change or resolder
YES
3-16
CONTINUOUS TX ON CONDITION
CH : 698CH(DCS)
TX POWER CODE: 520 CODE Aplied
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB