LG GD510 - Page 89

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Only for training and service purposes
5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 95/113 LGE Property
Figure 26. GSMK Control Signal
Figure 27. 8PSK Control Signal
Check Control Signals
(
TP1
,
TP2
,
TP3
)
{wZOwhGtvklPGaGy]W]G
{wXOwhsl}lsPGaGy]W^G
{wYO{vuwhPGaGj]ZZG
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(U101)
Yes
No
PAM Control Signal is
OK.
See next page to check
FEM & Mobile SW Circuit.
Checking Flow