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SAMSUNG Proprietary-Contents may change without notice
1-8
STH-A225 Trouble Shooting
2
N
N
AMPS
TDMA
N
Replace U304
Replace
F302
Need to check OSC301,
neighbor parts & U304_1,2,3
Need to check
U207 & neighbor parts
N
Y
Y
Y
Y
Y
RF loal check
U304_48 Lev=-5dBm
Freq=adjusted freq?
1
U304_41 Lev=-19dBm
Freq=130.05MHz
U304_34 Lev=-26dBm
Freq=130.05MHz
N
Need to check
U304, L303, C308, L301, C307
U304_37 Lev=4dBm
Freq=450kHz
Y
N
Replace F301 or
Need to check R302, R304, C301
U304_25 Lev=-2dBm
Freq=450kHz
MODE
U304_40, 42=3.0V
4
3