Samsung STH-N271 Service Manual page 12

STH-N271
Trouble Shooting
U304_41 Lev=-23dBm
U304_34 Lev=-33dBm
U304_37 Lev=-1dBm
U304_25 Lev=-7dBm
TDMA
3
2
Freq=130.05MHz
Y
Freq=130.05MHz
Y
Freq=450kHz
Y
Freq=450kHz
Y
MODE
AMPS
SAMSUNG Proprietary-Contents may change without notice
Y
N
U304_40, 42=3.0V
Y
Replace U304
N
Replace
F302
Need to check
N
U304, L303, C308, L301, C307
Replace F301 or
N
Need to check R302, R304, C301
4
2-8
1
RF loal check
U304_48 Lev=-6dBm
Freq=adjusted freq?
N
Need to check OSC301,
neighbor parts & U304_1,2,3
N
Need to check
U105 & neighbor parts