LG KG271 - Page 52

4. TROUBLE SHOOTING
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RX Trouble
U400
SW400
U102
FL400
FL401
Pin 2
Pin 1
Pin 3
Pin 7
TEST POINT
Check Pin 1, 2 of
SW400
with RF Cable
Signal is
OK ?
Replace Mobile
SW (SW400)
Yes
N
o
Yes
Mobile SW & ASM is
OK.
Check Antenna.
Check ULC2
(U102)
Control
Signal is
OK ?
N
o
Yes
Check Pin 1,2
Replace ASM
(FL400)
Pin 3,7
Signal is
normal ?
N
o
Yes
CHECKING FLOW