Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
C
2007
- 42 -
1. USB 1.1 Block Diagram For EMF
C
h
eck t
h
e
de
v
ic
e
p
o
w
e
r LE
D
C
h
eck t
h
e
de
v
ic
e
C
a
b
le.
Is
i
t
U
S
B1.1
ca
ble
?
If
th
e de
v
ic
e
i
s
HDD, che
c
k
a
ex
te
rn
al
po
w
e
r a
d
ap
to
r.
C
h
eck V
B
U
S
_5V
C
h
eck t
h
e
D
C
/D
C
C
o
n
v
er
te
r
(I
C712
)
N
Y
Y
N
N
2. Check S
e
quence
R
e
place
t
h
e
ca
ble
t
o
U
S
B1
.1
cab
le
o
r Re
p
lace t
h
e
d
e
v
ice.
Y
N
Rep
la
c
e
th
e
DC/
DC Con
v
e
rter
(I
C712
)
¥
E
xception
-
U
S
B
power
coul
d be di
sabl
ed by
in
rushi
ng current
-
In
th
is
case
, re
mo
ve the de
vice
and try to
rebo
ot the
TV (
A
C
pow
e
r
off/on
)
X260
USB_ link
(IC10
1)
DC/DC Conv
e
rte
r
(IC7
1
2
)
J
A
C
K
Si
de B/D
USB1.1_OVRCUR
5V_
U
S
B
VBUS
_
5
V
DP,DM
Cab
le
USB_PWR_DOWN
DEVICE
(HDD or Me
mor
y
)
USB 1.
1
c
a
b
le
