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Flow Chart of Troubleshooting
9-16. PCS Transmitter
TX ON (0Level)
Yes
F100 Pin13
≥ 25dBm
No
F100 pin8
≥ 25dBm
No
pam100 pin18
≥ 25dBm
No
pam100 pin1
≤ -4dBm
Yes
U100 pin 4,5,6,7
≥ 0.2Vp_p
Yes
Check UCP200
Check UCP201
END
Yes
Resolder RFS100,C101,L100
Yes
Yes
Resolder or Change
L106, C111, L118, C107
No
No
U100pin11,12 16,17,
29,32,33,36 ≥2.8V
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No
Check F100
pin9 = H (2.6V),
pin12 = L
Yes
Yes
Check pam100pin
2,3,5,6,8+Vbatt
pin4, OK?
No
No
pin10≥1.8V
Yes
9-26
Check ANT Switch
control circuit
Change or Resolder F100
Resolder or Change pam100
Check +VBAT or PAM
control signal
Check & Resolder
C116,C119,C122
and PMU Part
Resolder U100
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