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SAM SUNG Proprietary-C ontents may change without notice
SGH-I700 Flow Chart of Troubleshooting
2-18
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F1001 CHECK
pin15 -65dBm ?
13. DCS Receiver
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check soldered status of
L1006, L1002
U1002
pin 12,13≥
-20dBm ?
F1001 CHECK
pin3,4 -65dBm ?
U1002 CHECK
pin19,20 -65dBm ?
U1003 CHECK
pin5,25,28 : 3V ?
CN703
resolder or change
F1001
resolder or change
C1018 .C1020 ,L1004
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, C725
check or resolder
U1003 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 pin 2,3,4,5
Vp-p : 100mV ?
CHECK
U901
NO
YES
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
YES
NO