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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-24
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3-2-5. DCS/PCS TX
U401
check or resolder
U100
check or resolder
Yes
Yes
No
U401
pin24,25,26,27
Vp-p=1V ?
TCX400
check or resolder
No
U401
pin35 : 26MHz ?
Vp-p : 950mV ?
Yes
U100
pin
F3,E3
check or resolder
No
U401
pin11,18,28,,32,39
: 2.8V ?
No
U100
check
PAM404
check & change
Yes
PAM404
pin 2 : 0V?
pin 3 : 2.8V?
Yes
No
PAM404 pin1
about 5dBm ?
Yes
U401 pin21
check
No
PAM404
pin 6 : 2.9V ?
Yes
BATTERY
check & change
No
PAM404
pin16, 17: 3.7V?
No
CPL400
check & change
Yes
PAM404 pin19:
about 30dBm?
C413
,
RFS400
R406
,
ANT401,C411
check & change
Yes
Yes
U100
check & change
No
CPL400
pin 3 : 2.7V ?
No
PAM404 pin 19 :
about 30dBm?
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