Only For Training And Service Purposes - LG KP105 Service Manual

RX Trouble
TEST POINT
TP1
TP3
U401
TP4
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

TP2
SW401
FL401
TP5
TP6
U103
X101
4. TROUBLE SHOOTING
CHECKING FLOW
Check TP1, TP2 of
SW401
with RF Cable
Signal is
OK ?
Yes
Check TP3,4 and 5,6 of
FL401 ?
Yes
Mobile SW & ASM is OK.
See next page
* TP 3, 4 and 5, 6 outputs of
FL401 are balanced
- 49 -
Replace
No
Mobile SW
(SW40)
No
Replace SAW
Filter (FL401)
LGE Internal Use Only