5. Trouble shooting
Check Control Signals
(TP1, TP2, TP3)
Signals are | No | Check |
| PMB8888(U102) | |
Normal ? |
| |
|
|
Yes
PAM Control Signal is
OK.
See next page to check
FEM & Mobile SW Circuit.
GSMK Control Signal | 8PSK Control Signal |
TP1(TX RAMP)
TP2(PA EN)
TP3(PA MODE)
TP2(PA EN)
TP1(TX RAMP)
TP3(PA MODE)
TP1(TX RAMP)
TP3(PA MODE) : R616
TP1(TX_RAMP) : R612
TP2(PA_EN) : R614
TP2(PA EN) TP3(PA MODE)
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| Only for training and service purposes |
