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7-7. EGSM Reciever
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
F101 CHECK
pin#9 ≥ -65dBm ?
F101 CHECK
pin#11 ≥ -65dBm ?
U102 CHECK
pin#21,22 ≥ -65dBm ?
U102 CHECK
pin#31 : 26MHz ?
Vp-p : 860mV?
CHECK
U300
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
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Check soldered status of
C103 C133, L109
CN100
resolder or change
F101, C120, L106
resolder or change
C124,C142,L107
resolder or change
NO
UX101 CHECK
26MHz ?
Vp-p : 950mV?
Resolder or
7-11
Flow Chart of Troubleshooting
UX101 CHECK
clean 3V?
YES
UX101
Change?
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