LG PRADA KE850 - Page 109

5. Trouble shooting
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5.13.12 Checking PAM Control Signals
1.2KR441
C468
820p
NA
C470
R442 0
0R443
NA
C469
TXON_PA
MODE
PALEVEL
Checking Points
MODE
TXON
_
P
A
PA
_
LEVEL
U403
MODE MODE PA_LEVEL TXON_PA
GMSK LOW Ramp Burst Control HIGH
8PSK HIGH Control Amp bias HIGH
Figure 26. PAM Control Signals
Figure 27. Transceiver Output
Table 4. PAM Mode Operation