Level 3 Repair
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8-31
F100 PIN 4 :
About 22dBm ?
8-3-16. WCDMA BAND1 TX
CONTINUOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band1 CH : 20000
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check the Voltage at
C166 = VBATT ?
Check F100 PIN 6
About 22 dBm
CHECK soldered
-
RFS100, L111, C136
Resolder or change
C166, L119
Resolder or change
F100
Check component
soldering status OK at
F101
NO
YES
NO
YES
NO
YES
NO
YES
Check F101 PIN 7
About 22 dBm ?
Resolder or change
C114, C140
NO
YES
Resolder or change
U103
Check the freq. at
OSC100 PIN 4 : 26MHz ?
Change or resolder
OSC100
Band1 Transmitter is O.K?
Resolder or change
UCP300
END
NO
NO
YES
NO
Resolder or change
U102
Check U102 PIN 13
About 22dBm ?
Resolder or change
F101
NO
YES
Check U102 PIN 24
About 0dBm?
NO
Resolder or change
F101
YES
Check component
soldering status ok at
U103
YES