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SGH-E610 Flow Chart of Troubleshooting and Circuit Diagrams
2.RF
1. GSM Receiver
CONTINUOS RX ON
RF INPUT : 62CH
Cell power : -50dBm
NORMAL CONDITION
catch the channel?
F100 CHECK
pin13 ≥ -65dBm?
F100 CHECK
pin1,2 ≥ -65dBm?
U101 CHECK
U101 CHECK
pin9,32 : 2.8V
U101 CHECK
R103:13MHz
U101 CHECK
pin 1,2,3,4,5,6,7:
Vp-p 100mV
GSM Receiver is ok?
This Document can not be used without Samsung's authorization
NO
YES
NO
YES
NO
YES
NO
pin20,21 ≥
-65dBm?
YES
NO
YES
NO
YES
NO
YES
NO
END
SAMSUNG Proprietary-Contents may change without notice
CHECK
L104,L105,contact
CN101
resolder or change
F100
resolder or change
C106,C109,L100
resolder or change
U301 PIN A13, C311
resolder or change
NO
R103, C105
resolder
U101
resolder or change
GSM RX path component
resolder or change
2-16
OSC101 CHECK
pin 4 : 2.8V
pin 3 : 13MHz
V p-p : 950mV
NO
OSC101
change
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