Wcdma Band1 Tx - Samsung GT-I9500 Service Manual

Level 3 Repair

8-3-16. WCDMA BAND1 TX

F100 PIN 4 :
About 22dBm ?
Check F100 PIN 6
About 22 dBm
Check the Voltage at
C166 = VBATT ?
Check component
soldering status OK at
F101
Check F101 PIN 7
About 22 dBm ?
Check U102 PIN 13
About 22dBm ?
Check U102 PIN 24
About 0dBm?
Check the freq. at
OSC100 PIN 4 : 26MHz ?
Check component
soldering status ok at
U103
Band1 Transmitter is O.K?
END
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
NO
CHECK soldered
- RFS100, L111, C136
Resolder or change
F100
Resolder or change
C166, L119
Resolder or change
F101
Resolder or change
F101
Resolder or change
C114, C140
Resolder or change
U102
Change or resolder
OSC100
Resolder or change
U103
Resolder or change
UCP300
8-31
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