Level 3 Repair
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8-71
Check RFS100
≤
-65dBm
8-3-28. LTE B1 RX
CONTINUOUS RX ON
RF INPUT : 300CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check the voltage at
C303 = 2V
&
C320 = 1.8V
&
C302 = 1.3V
Check the Voltage at
C327 = VBATT ?
Check component
soldering status OK at
F101
CHECK soldered
RFS100
Resolder or change
U301,L302
Resolder or change
F101
Resolder or change
U300
Check the freq. at
OSC400 PIN 1 :
19.2MHz ?
Change or resolder
OSC400
Check C100
≥
-65dBm ?
Resolder or change
C100
GSM850 Receiver is O.K?
Resolder or change
U500
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check C182
≥
-65dBm
Resolder or change
C182
NO
YES
