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Flow Chart of Troubleshooting
9-20
9-10. GSM Receiver
Yes
CONTINUOUS RX on
RF input : 62CH
Cell power : -50dBm
RX ON
RF input : 62CH
Cell Power : -50 dBm
Yes
No
Resolder RFS101
C134
≥
-65dBm
C134 > 2.5V
C165 > 1.5V
C166 < 0.5V
C174 > 1.5V
Yes
Check UCP301
No
Yes
L105
≥
-68dBm
No
Resolder or Change MOD101
Yes
No
Check UCP300
Check U101
U101 PIN
11,12,13,14
≥
500mV
END
Содержание SGH-G400
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