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Flow Chart of Troubleshooting
7-28
7-15. DCS Transmitter
R101, R111, L100
>=2.7V
OK?
Yes
Resolder U102
Check UCP200
END
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Resolder or Change PAM100
Check PAM100
pin 7, OK?
Yes
U102 pin
H8,J8,H7,J7
>= 1V
Resolder L103, R119,C112
Resolder C126, L102,L104
Check ANT Switch
control circuit
Change or Resolder F102
PAM100
pin1
<= -11dBm
PAM100
pin1
<= -15dBm
PAM100 pin14
>= 18dBm
F102 pin13
>= 18dBm
Check F102
pin12 = H (2.68V),
pin10 = L
TX ON (5Level)
Resolder CN100, C102
F102 Pin8
>= 20dBm