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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.14.5. Checking PAM Control Signals
Table 4. PAM Mode Operation
Figure 25. Transceiver Output
MODE
MODE
PA_LEVEL
TXON_PA
GMSK
LOW
Ramp Burst Control
HIGH
8PSK
HIGH
Control Amp bias
HIGH
C418
100p
100p
C417
C412
100p
47p
C416
10K
R405
PA_BAND
PA_LEVEL
TXON_PA
HBAND_PAM_IN
PA_MODE
TXON_PA
PA_LEVEL
MO DE
MODE
TP3(PA MODE)
TP2(TXON PA)
TP1(PA LEVEL)
Figure 24. PAM Control Signals
Checking Points
TP2(TXON PA)
TP1(PA LEVEL)
TP3(PA_MODE)