VSX-LX50
46
1
2
3
4
1
2
3
4
C
D
F
A
B
E
F
or
the
f
ollo
w
ing
diagnosis,
a
digital
oscilloscope
must
be
used.
The
1st
D
SP
or
the
communication
path
is
in
f
ailure.
I
s
the
voltage
o
f D
1RST3
maintained
in
3.3
V
?
(D
oes
it
f
all
to
become
0
V
periodically?
)
I
C101
F
2
(
R109
)
N
o
DI
R
EQ
3
Y
es
Y
es
Replace
C
N
402.
Y
es
Y
es
N
o
I
s
there
a
analog
audio
output
in
C
N
402?
N
o
I
s
not
there
poor
contact
in
C
N
402
?
Check
the
analog
signal
path
in
the
main
unit.
Check
the
parts
and
patterns
in
the
path
on
the
D
SP
assy.
S
tep 8: 1st
DSP
C
N
951
(
Pin
23
)
I
C101
B10
(
R104
)
D
1RST3
I
s
the
voltage
3.3
V
?
N
o
Check
the
parts
and
patterns
in
the
path.
Check
the
parts
and
patterns
in
the
path.
I
t
is
likely
a
Boot
E
rror.
(I
t
is
very
di
ff
icult
to
diagnose
w
hich
peripheral
part
o
f
the
D
SP
is
in
f
ailure.
)
Check
the
path
to
the
microcomputer.
Y
es
I
s
the
voltage
3.3
V
?
N
o
N
o
D
oes
the
voltage
become
3.3
V f
or
a
moment
w
hen
the
input
stream
is
changed?
C
N
951
(
Pin
21
)
N
o
Y
es
D
oes
the
voltage
become
3.3
V f
or
a
moment
w
hen
the
input
stream
is
changed?
Check
the
path
to
the
microcomputer.
C
N
951
(
Pin
22
)
N
o
D
1CS3
Y
es
Check
the
parts
and
patterns
in
the
path.
D
oes
the
voltage
become
0
V f
or
a
moment
w
hen
the
input
stream
is
changed?
Y
es
Y
es
Check
the
path
to
the
microcomputer.
C
N
951
(
Pin
12
)
N
o
D
SCLK3
I
C101
A11
(
R136
)
N
o
D
oes
the
voltage
become
0
V f
or
a
moment
w
hen
the
input
stream
is
changed?
I
s
the
clock
signal
output
w
hile
the
voltage
at
DI
CS3
is
0
V
?
Y
es
Check
the
parts
and
patterns
in
the
path.
I
C101
B9
(
R103
)
N
o
I
s
the
clock
signal
output
w
hile
the
voltage
at
DI
CS3
is
0
V
?
Check
the
f
ollo
w
ing
points
w
hen
the
source
is
Multi
ch.
O
P
C
N
951
(
Pin
14
)
D
S
DI
3
Y
es
Check
the
path
to
the
microcomputer.
N
o
I
s
the
clock
signal
output
w
hile
the
voltage
at
DI
CS3
is
0
V
?
Check
the
parts
and
patterns
in
the
path.
I
C101
A9
(
R132
)
N
o
I
s
the
clock
signal
output
w
hile
the
voltage
at
DI
CS3
is
0
V
?
Y
es
