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Level 3 Repair
8-37
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Check L103
≤
-65dBm ?
8-3-14. GSM850 RX
NORMAL CONDITION
catch the channel?
Check the Voltage at
C111 =2.8V
Check the voltage at
{C316 = 2.2V ?}
&
{C319,C320,C322,C323,C32
6,C327,C330,C333=1.3V?}
CHECK soldered
RFS100,L103,L104,C112
resolder or change
C111,F100
resolder or change
U501
Check the freq. at
OSC500 : 19.2MHz ?
change or resolder
OSC500
Check
L116,L117,L118,C126
≥
-65dBm ?
resolder or change
F100,L116,L117,L118,C126
GSM850 Receiver is O.K?
resolder or change
U300
END
NO
YES
NO
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES