LG KG271 - Page 48

4. TROUBLE SHOOTING
- 49 -
RX Trouble
* FL401 6,7 and 8,9 output are
balanced
U400
SW400
U102
FL400
FL401
Pin 6
Pin 4
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.
See next page
Replace ASM
(FL400)
N
o
Yes
Check Pin 4,6 of
FL400 ?
Replace SAW
Filter (FL401)
N
o
Check Pin 6,7 and 8,9 of
FL401 ?
TEST POINT CHECKING FLOW