Level 3 Repair
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8-23
Check C136
≤
-65dBm ?
8-3-12. WCDMA Band5 / GSM 850 RX
CONTINUOUS RX ON
RF INPUT : 4408CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check the voltage at
{L105= V_Battery ?}
& {C120, C127 = 2.5V ?}
& {C114, C111, C128 = 2.32V }
& {C119 = 1.8V?}
& {C118, C117, C115, C110,
C106 = 1.5V?}
& {C122, C108 = 1.2V?}
Check F100 PIN6
≤
-65dBm ?
Check F101 PIN 29, 30
≤
-65dBm ?
CHECK soldered
RFS100, L111, C136
Resolder or change
F100
Resolder or change
F101
Resolder or change
U103
Check the freq. at
OSC100 PIN 4 : 26MHz ?
Change or resolder
OSC100
Check component
soldering status OK at
F101
Resolder or change
F101
Band5 / G850 Receiver is O.K?
Resolder or change
U300
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check the voltage at
C166= V_Battery ?
CHECK soldered
L119, C166
NO
NO
