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SGH-E880 Flow Chart of Troubleshooting
2-
16
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F700 CHECK
pin #13
≥
-65dBm
2-2-2. DCS RX
CONTINUOUS RX ON
RF INPUT : 660CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check soldered status of
C734, C737
U700
pin #9, #32: 2.8V
F700 CHECK
pin#3,#4
≥
-65dBm
U700 CHECK
pin#18, #19
≥
-65dBm
C725,CN700
resolder or change
F700
resolder or change
C723,C724,L704
resolder or change
Check the pin A13 of the U100
U700 CHECK
pin #8 : 13MHz &
Vp-p : 950mV
OSC700
resolder or change
U700
resolder or change
U100 CHECK!!
U700
pin#1,#2,#3,#28
Vp-p =100mV
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
