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2-2.RF
2-2-1. EGSM RX
②
④
This Document can not be used without Samsung's authorization
NORMAL CONDITION
catch the channel?
YES
F101
CHECK
pin8 ≥ -65dBm ?
YES
F101 CHECK
pin10 ≥ -65dBm ?
YES
F100 CHECK
pin6,7 ≥ -65dBm ?
YES
U100
CHECK
pin21,22 ≥ -65dBm ?
YES
U100
pin 12,13,25,26,27:
2.8V ?
YES
U100 CHECK
pin 30,31 :
26MHz ?
Vp-p : 950mV?
YES
U100
pin 4,5,6,7 Vp-p
: 120mV ?
YES
⑧
U300
CHECK!!
SAMSUNG Proprietary-Contents may change without notice
SGH-C120 Flow Chart of Troubleshooting
NO
CHECK
ANT
contact ?
NO
F101,RFS100
resolder or change
NO
F101
resolder or change
NO
F100
resolder or change
NO
C127,C129,L107
resolder or change
NO
U300 pinA13, C314
change or resolder
NO
OSC100
⑦
change or resolder
NO
U100
resolder or change
2-15
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
①
③
⑤
⑥
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