LG -H845 Service Manual page 37

Checking Flow
START
ANT1003 , Silicon gasket
1.Is the condition
of antenna feeding(c-clip) good?
2. Is the condition of Silicon gasket good?
Yes
Check the TP 1.
Does the signal exist
at C1017 ?
Yes
Check the TP 2.
Does the signal exist
at C1083 ?
Yes
Check the TP3's voltage level.
Is the level +1.8V
at C1002?
Yes
U2100(MSM8996)
Check the damage and
soldering condition , or replace it
LGE Internal Use Only LGE Internal Use Only
NO
Check the c-clip or
Silicon gasket, or replace it
NO
Check the FL1001
soldering
NO
Check the U1001
soldering
NO
check the U4100
(PM8956) soldering
Image
TOP
TP3
BOT
36
3. TROUBLE SHOOTING
ANT1003
TP1
FL1001
TP2
Silicon gasket
Copyright ⓒ 2016 LG Electronics. Inc. All right Copyright ⓒ 2016 LG Electronics. Inc. All right
reserved. Only training and service purposes reserved. Only training and service purposes