![](/images/new-backgrounds/1297636/297636187x1.webp)
5. Trouble shooting
Check TP10 of CN600 with RF Cable and TP9 of C631
TP10 Signal same as TP9?
Yes
Check TP1, TP2 of U600 ?
Yes
Control Signal is
OK ?
Yes
TP5~8 Signal is
OK ?
Yes
Mobile SW & FEM is OK.
Check Antenna.
No
Replace Mobile SW
(SW401)
No | Check PMB8888 |
No
Replace FEM (U600)
EGSM RX
ANT SW1
ANT SW2
Mobile SW | FEM Control Signals |
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