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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-
20
9-2.RF
9-2-1. EGSM RX
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
U100 Check
Pin #6
≥
-65dBm ?
U100 Check
Pin #12,13
≥
-65dBm ?
UCP100 Check
Pin#10, 11
≥
-65dBm ?
Check soldered status of
L101
RFS101, C102, L103
Resoer or Change
U100 Resolder or Change
UCP100 Check
Pin#34 =Clean 2.8V?
UCP100 Check
Pin#35,36,37,38=100mV?
C104
Check or resolder
Check U300
NO
NO
YES
YES
YES
NO
YES
UCP100 Check
Pin #21 : 13MHz ?
Vpp : 1.1V?
R119 = 13MHz ?
Vpp = 1.2V?
R117 = 2.8V ?
UCP100
Change or resolder
NO
NO
NO
C127, C128
resolder
TCX101
Change or resolder
YES
YES
YES
NO
Check soldered status of
L104, L105, C107
YES
NO