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2-2.RF
2-2-1. EGSM RX
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
F100 Check
Pin #6
-65dBm ?
YES
F100 Check
Pin #15
-65dBm ?
YES
UCD100 Check
Pin#42
-65dBm ?
YES
UCD100 Check
Pin#15,16,23,27,31
=Clean 2.8V?
YES
UCD100 Check
Pin#28,29,30,54=100mV?
YES
Check UCP301
This Document can not be used without Samsung's authorization
NO
NO
NO
NO
NO
NO
UCD100 Check
Pin #17 : 13MHz ?
Vpp : 1.1V?
YES
UCD100
Change or resolder
SAMSUNG Proprietary-Contents may change without notice
SGH-E770 Flow Chart of Troubleshooting
Check soldered status of
R125, 11, C12, 153, L108, 106
RFS100, C10
Resoer or Change
F100 Resolder or Change
Check soldered status of
L105
C154, 17, 18, 19, UCP301
Check or resolder
NO
R118 = 13MHz ?
Vpp = 1.2V?
YES
C141, R118
resolder
NO
R116 = 1.5V ?
YES
TCX101
Change or resolder
NO
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