VSX-1017AV-K
32
1
2
3
4
1
2
3
4
C
D
F
A
B
E
5. DIAGNOSIS
5.1 DIAGNOSIS FLOWCHART
5.1.1 DSP TROUBLESHOOTING
•
When
a
sound
is
not
out
in
the
multi
-
CH
signal
playback
mode
or
surround
mode
with
the
digital
signal
input.
(SurroundBack
is
not
output
by
setting.)
•
Suppose
CR
to
be
poor
contact
and
that
is
not
damaged.
•
T
his
shows
failure
analysis
of
DSP
Assy.
Step
4:
3
V
to
5
V
conversion
Step
2:
BtoB
connector
Step
1:
MUTE
pin
C
N
901,
C
N
701,
C
N
95
2
Are
the
connectors
securely
inserted
?
T
urn
the
power
off
and
insert
the
connectors
securely.
N
o
I
C95
2
(Pin
18)
Do
convert
3
V
into
5
V
for
pin
2
input
?
Replace
I
C801.
Replace
I
C901.
Replace
I
C90
2
.
A
Yes
T
o
Step
3
T
o
Step
2
T
o
Step
4
Step
0:
Preliminary
confirmation
Confirm
the
following
items
before
checking
Do
screws
of
C
O
AX
Jack
securely
tighten
?
T
ighten
screws
securely.
N
o
Yes
T
o
Step
1
I
C801
(Pin
5
4
)
I
s
the
voltage
of
output
signal
0
V
?
N
o
Replace
I
C95
2
.
N
o
Yes
MU
T
E
Troubleshooting
for
all
destination
Step
3:
Regulator
IC
Check
the
C
N
901
and
Regulator
assy.
I
C901
(Pin
4
)
I
s
the
voltage
of
around
5
V
to
5.
3
V
input
?
N
o
Yes
(to
chassis)
I
C90
2
(Pin
5)
I
s
the
voltage
of
1.
2
5
V
output
?
N
o
(to
chassis)
I
C901
(Pin
5)
I
s
the
voltage
of
3
.
3
V
output
?
N
o
Yes
Yes
Yes
I
C95
2
(Pin
17)
Do
convert
3
V
into
5
V
for
pin
3
input
?
Replace
I
C95
2
.
N
o
Yes
I
C95
2
(Pin
16)
Do
convert
3
V
into
5
V
for
pin
4
input
?
Replace
I
C95
2
.
N
o
Yes
I
C95
2
(Pin
15)
Do
convert
3
V
into
5
V
for
pin
5
input
?
Replace
I
C95
2
.
N
o
Yes
(to
chassis)
Part
shape
and
Pin
arrangement
of
I
C901
and
I
C90
2
