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5. Trouble shooting
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Check Cont rol Signals
(TP1, TP2, TP3)
TP3(PA MODE) : R605
TP1(PA_LEVEL) : R403
TP2(TXON_PA) : R602
Signal s are
Normal ?
Check
PMB8877(U100)
Yes
No
PAM Control Signal is
OK.
See next page to chec k
FEM & Mobile SW Circuit.
TP3(PA MODE) : R605
TP1(PA_LEVEL) : R403
TP2(TXON_PA) : R602
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA MODE)
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA MODE)
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA MODE)
Figure 26. GSMK Control Signal
Figure 27. 8PSK Control Signal
Checking Flow
Содержание KP500
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