Dcs/Pcs Tx - Samsung GT-I9500 Service Manual

Level 3 Repair

8-3-15. DCS/PCS TX

F100 PIN 4 :
About 30dBm ?
Check F100 PIN 6
About 30dBm
Check the Voltage at
C166 = VBATT ?
Check component
soldering status OK at
F101
Check F101 PIN 10
About 30dBm ?
Check U102 PIN 9
About 30dBm ?
Check U102 PIN 24
About 10dBm?
Check the freq. at
OSC100 PIN 4 : 26MHz ?
Check component
soldering status ok at
U103
DCS/PCS 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
C154, L118
Resolder or change
U102
Change or resolder
OSC100
Resolder or change
U103
Resolder or change
U300
8-29
CONTINUOUS TX ON CONDITION
TX POWER IDX1 APPLIED
DCS CH : 685
PCS CH : 661
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB