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Flow Chart of Troubleshooting
9-32
9-16. DCS Transmitter
U104pin11,12,16,29,
32,33,36≥2.8V
pin 10≥1.8V
F101 Pin13
≥ 25dBm
TX ON (0Level)
Check F101
pin9 = H (2.6V),
pin11 = L
F101 pin8
≥ 25dBm
U102 pin17
≥ 25dBm
U102 pin1
≤ -4dBm
Change or Resolder F101
Check ANT Switch
control circuit
Resolder or Change
C122,L113,L114
U104 pin 4,5,6,7
≥ 0.2Vp_p
Yes
Check U102
pin2,3,4,5,6 OK?
Resolder or Change U102
Check +VBAT or PAM
control signal
Check & Resolder
C131,C134,C135
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Yes
No
END
Check UCP200
Resolder U104
Yes
Resolder RFS100, C110, L106
Содержание SGH-J210
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