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Flow Chart of Troubleshooting
10-2. RF
10-2-1. EGSM Receiver
NORMAL CONDITION
catch the channel
YES
F700 CHECK
pin#6 ≥ -60dBm
YES
UCD700 CHECK
pin#6,#7 ≥ -65dBm
YES
UCD700
pin #34 = 2.9V
YES
TCX101 CHECK
pin #3 : 26MHz &
Vp-p : 900mV
YES
UCD700
pin#19 : 13MHz &
Vp-p = 900mV
YES
U702
pin#35,#36,#37,#38
Vp-p ≥ 100mV
YES
UCP101 CHECK!!
NO
Check soldered status of
L701, C701, C738, Ant.
NO
RFS701, L700, C700
resolder or change
NO
F700, C708, L702, L703
resolder or change
NO
Check the pin A13 of the
UCP101
NO
TCX101
change or resolder
NO
UCD700
change or resolder
NO
10-21
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
1
2
3
4
5
6
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