LG HU85LA, Service Manual, Page: 25 / 30

- 25 -
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
Change
Main
B/
D
LED indicato
r ON
at
st
-b
y
Check the
connecting
status
of 51p
cable(DLPC
)
Check voltage of DMD PG_OFFSET
(20pin
)
Change
LD
Driver B/D
&
Check imag
e
Ye
s
Re
-c
on
ne
ct
the Cable
Ye
s
No
No
Ye
s
Change
Main B/
D
No
Check the
connecting
status
of
LD cabl
e
Re
-c
on
ne
ct
the Cable
No
Ye
s
20
P
in
P
90
03
W
af
er
(D
M
D
B
oa
rd
↔
M
ai
n
B
oa
rd
)
1~
3
…
4(
R9
23
2)
PG
_O
FF
SE
T(
no
rm
al
: 1
.8
V,
a
bn
or
m
al
:
0V
)
5~
20
G
N
D
~
Check Poor connection
Check Poor connection
No
Change
Optic
Engine
Check the
connecting
status
of 96p
cable(DMD)
Re
-c
on
ne
ct
the Cable
Ye
s
No
Check Poor connection
- Appendix. No image