LG GD310 Service Manual page 100

Figure 26. GSMK Control Signal
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Only for training and service purposes
Checking Flow
Check Control Signals
(TP1, TP2, TP3)
Signals are
Normal ?
Yes
PAM Control Signal is
OK.
See next page to check
FEM & Mobile SW Circuit
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA MODE)
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA MODE)
Check
N
PMB8877(U101)
Figure 27. 8PSK Control Signal
TP3(PA MODE) : C436
TP1(PA_LEVEL) : C433
TP2(TXON_PA) : C429
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5. TROUBLE SHOOTING
TP2(TXON PA)
TP1(PA LEVEL)
TP3(PA MODE)
LGE Internal Use Only