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SAM SUNG Proprietary-C ontents may change without notice
SGH-I700 Flow Chart of Troubleshooting
2-16
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F1001 CHECK
pin15 -65dBm ?
11. EGSM Receiver
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check soldered status of
L1006, L1002
U1002
pin 12,13≥
-20dBm ?
F1001 CHECK
pin1, 2 -65dBm ?
U1002 CHECK
pin21,22 -65dBm ?
U1003 CHECK
pin5,25,28 : 3V ?
CN703
resolder or change
F1001
resolder or change
C1016 .C1017 ,L1003
resolder or change
U701 pin33, C724
check or resolder
U1003 CHECK
pin 7 : 13MHz ?
Vp-p : 860mV?
U1003 change or
resolder
U1002 CHECK
pin 14,23,26,32:
clean 2.8V?
C921 , R907
resolder
OSC901 change or
resolder
U701 pin39, C724
check or resolder
U1002 pin3,4
Vp-p : 240mV?
U1001 CHECK
pin6, 20 : 2.8V ?
U1001
resolder or change
U1002 pin1, 2
Vp-p : 250mV ?
U1002
resolder or change
U1001 pin2,3,4,5
Vp-p: 100mV ?
CHECK
U901
NO
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
OSC901 CHECK
pin 3 : 13MHz ?
Vp-p : 950mV?
U701 pin33, C724
check or resolder
NO
OSC901 CHECK
pin 4 : clean
3V ?
NO