Pcs Transmitter - Samsung SGH-A517 Service Manual

9-19. PCS Transmitter

TX ON (0Level)
Yes
F100 Pin19
≥ 25dBm
No
F100 pin12
≥ 25dBm
No
PAM100 pin18
≥ 25dBm
No
PAM100 pin1
≤ -4dBm
Yes
RFS102 pin 4,5,6,7
≥ 0.2Vp_p
Yes
Check UCP201
END
Yes
Resolder RFS100,RFS101,
Yes
Yes
Resolder or Change
No
No
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R100,L100,L101
Check F100
pin11 = H (2.6V),
pin10 = L
Yes
L121
Check PAM100
pin 2,3,5,6,8,
Vbatt pin4, OK?
No
RFS102
No
pin 16,17,29,
32,36 ≥2.8V
Yes
9-27
Flow Chart of Troubleshooting
No
Check ANT Switch
control circuit
Change or Resolder F100
Yes
Resolder or Change PAM100
Check +VBAT or PAM
control signal
Check & Resolder
RFS102, C117,L123,C126
And PMU Part
Resolder RFS102