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SGH-S341i Flow Chart of Troubleshooting
2-
14
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F502 CHECK
pin13 ≥ -65dBm ?
2. DCS RX
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
CHECK
ANT501,R509 contact ?
U501
pin 9, 31: 2.8V ?
F502 CHECK
pin3,4 ≥ -65dBm ?
U501 CHECK
pin18, 19 ≥ -65dBm ?
C518,CN403
resolder or change
F502
resolder or change
C530,C532,L504
resolder or change
U102 pinA13, C127
change or resolder
U501 CHECK
pin 8 : 13MHz ?
Vp-p : 950mV?
OSC501
change or resolder
U501
resolder or change
U102 CHECK!!
U501
pin1,2,3,28 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES