LG KS660 - Page 108

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Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
GSMK Control Signal
8PSK Control Signal
Check Control Signals
(
TP1
,
TP2
,
TP3
)



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
)
Signals are
Normal ?
Check
PMB8877(U100)
Yes
No
PAM Control Signal is
OK.
See next page to check
FEM & Mobile SW Circuit.
Checking Flow