Samsung GT-C3750 Service Manual page 62

Level 3 Repair
8-3-17. DCS/PCS Tx
TX Power is too Low!!
TX ON (5Level)
CLOCK CHECK?
26MHz @ OSC201 (pin1,
pin3)
YES
PAM100 pin29 ≥ -1
dBm
(L111 using spectrum
analyzer)
YES
Check the Voltage
C103 〉 3.3V?
YES
PAM100 Pin17 ≥
30dBm
(R100 using spectrum
analyzer)
YES
Check the RFS100
connection with PCB?
YES
Antenna
re-solder or change
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NO
Re-solder OSC200
NO
Re-solder or change
UCP200
NO
Check the UCP200 & VBAT
circuit.
NO
Resolder PAM100
NO
Resolder RFS100.
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