Pcs Tx - Samsung SGH-E316 Service Manual

4. PCS TX

F402 pin 11
about 2~3dBm?
YES
F400 , C421
check&change
U102
pin A13,C125
change or resolder
U403
change or resolder
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-E316 Flow Chart of Troubleshooting and Circuit Diagrams
NO
F402
pin6=2.8V?
YES
U404 pin31
about 4~5dBm?
YES
F402 check & change
BATTERY
check & change
U102
check
NO
pin 8,9,14,30,32
pin1,3=13MHz
U403 pin28
YES
pin11,12,13
U102
NO
check&change
NO
NO U404 pin 42,43
NO
U404 pin 45
NO
U404 pin 37
U404 pin 40
change or resolder
U403
=2.8V?
YES
OSC 402
NO
YES
NO
=13MHz
YES
U403
NO
=3.0V?
5-16
=3.7V?
YES
=1.2V?
YES
about :
YES
NO
=3V?
YES
U102
U404
check
OSC 402
check or change
U403
change or resolder
U102
check or change