VSX-LX70
15
5
6
7
8
5
6
7
8
C
D
F
A
B
E
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
To
keep
the
product
quality
a
f
ter
servicing,
con
f
irm
recommended
check
points
shown
below.
No.
Procedure
Check
points
1
Con
f
irm
whether
the
customer
complain
has
been
solved.
If
the
customer
complain
occurs
with
the
particular
source,
such
as
Dolby
Digital,
DTS,
AAC,
DVD-A
and
HDM
I
,
input
it
f
or
the
operation
check.
The
customer
complain
must
not
be
reappeared.
Video,
Audio
and
operations
must
be
normal.
2
Check
the
analog
audio
playback.
(Make
the
analog
connections
with
a
DVD
player.)
Each
channel
audio
and
operations
must
be
normal.
3
Check
the
digital
audio
playback.
(Make
the
digital
connections
with
a
DVD
player.)
Each
channel
audio
and
operations
must
be
normal.
4
Check
surround
playback.
(Select
Surround
mode
and
check
the
multichannel
operations
via
the
DSP
circuit.)
Each
channel
audio
and
operations
must
be
normal.
5
Check
the
video
outputs.
(Connect
with
a
DVD
player.)
Video
and
operations
must
be
normal.
6
Check
the
sound
f
rom
headphone
output.
Sound
must
be
normal,
without
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
below
f
or
the
items
to
be
checked
regarding
video
and
audio
:
Items
to
be
checked
regarding
video
Item
to
be
checked
regarding
audio
Block
noise
Distortion
Horizontal
noise
N
oise
Dot
noise
Volume
too
low
Disturbed
image
(video
jumpiness)
Volume
too
high
Too
dark
Volume
f
luctuating
Too
bright
Sound
interrupted
Mottled
color
