LG 42LB9RT, Руководство по обслуживанию

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Only for training and service purposes LGE Internal Use Only
13. In case of becomes unusual display
from RF mode(Sub)
Is normal video output
of the
T
uner?
(Check T
U
201
_Pin1
4)
Is normal the I2C communication ?
(Check Pin5,
Pin4)
Is normal video
output
of CXA2069Q?
(Check R3
12, In case of S-Video
check R312, R314)
Is the
T
uner Cable
connected w
e
ll?
Is normal the Input voltage ?
(Check Pin8,
Pin6)
Is normal the Input voltage ?
(Check L3
08)
Is normal the
I2C communication ?
(Check R309, R310)
Change the IC(
IC300)
Check the po
wer
( Check L10
04
)
Change the IC(
IC700)
Is the LVDS Cable
connected w
e
ll?
Cabl
e inserts
w
e
ll
Change the T
uner
Check the po
wer
( L1103)
Cabl
e inserts
w
e
ll.
B
NO
NO
NO
NO
NO
NO
NO
YE
S
YE
S
YE
S
YE
S
Y
E
S
YE
S
Y
E
S
14. In case PIP d
o
esn’t d
isplay from other modes(Sub)
Sa
me
as the
case
of main
exc
e
p
t block A
should be
change to B