VSX-LX50
20
1
2
3
4
1
2
3
4
C
D
F
A
B
E
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
To
keep
the
product
q
uality
a
f
ter
servicing,
con
f
irm
recommended
check
points
sho
w
n
belo
w
.
N
o
.
P
rocedure
C
heck points
1
Con
f
irm
w
hether
the
customer
complain
has
been
solved.
If
the
customer
complain
occurs
w
ith
the
particular
source,
such
as
D
olby
D
igital,
D
TS,
AAC,
DVD
-A
and
H
D
M
I
,
input
it
f
or
the
operation
check.
The
customer
complain
must
not
be
reappeared.
V
ideo,
Audio
and
operations
must
be
normal.
2
Check
the
analog
audio
playback.
(
Make
the
analog
connections
w
ith
a
DVD
player.
)
E
ach
channel
audio
and
operations
must
be
normal.
3
Check
the
digital
audio
playback.
(
Make
the
digital
connections
w
ith
a
DVD
player.
)
E
ach
channel
audio
and
operations
must
be
normal.
4
Check
surround
playback.
(
Select
Surround
mode
and
check
the
multichannel
operations
via
the
D
SP
circuit.
)
E
ach
channel
audio
and
operations
must
be
normal.
5
Check
the
video
outputs.
(
Connect
w
ith
a
DVD
player.
)
V
ideo
and
operations
must
be
normal.
6
Check
the
sound
f
rom
headphone
output.
Sound
must
be
normal,
w
ithout
noise.
7
Check
the
appearance
o
f
the
product.
N
o
scratches
or
dirt
on
its
appearance
a
f
ter
receiving
it
f
or
service.
See
the
table
belo
w f
or
the
items
to
be
checked
regarding
video
and
audio
:
I
tems to be checked regarding video
I
tem to be checked regarding audio
Block
noise
D
istortion
Hori
z
ontal
noise
N
oise
D
ot
noise
V
olume
too
lo
w
D
isturbed
image
(
video
jumpiness
) V
olume
too
high
Too
dark
V
olume
f
luctuating
Too
bright
Sound
interrupted
Mottled
color