1-4
Electrostatically
Sensitive
Devices
(ESD)
Some
semiconductor
(solid
state)
devices
can
be
damaged
easily
by
static
electricity.
Such
components
commonly
are
called
E
lectrostatically
Sensitive
Devices
(
E
SD).
E
xamples
of
typical
E
SD
devices
are
integrated
circuits
and
some
field-effect
transistors
and
semiconductor
chip
components.
The
following
techniques
should
be
used
to
help
reduce
the
incidence
of
component
damage
caused
by
static
electricity.
1.
Immediately
before
handling
any
semiconductor
component
or
semiconductor-equipped
assembly,
drain
off
any
electrostatic
charge
on
your
body
by
touching
a
known
earth
ground.
Alternatively,
obtain
and
wear
a
commercially
available
discharging
wrist
strap
device,
which
should
be
removed
for
potential
shock
reasons
prior
to
applying
power
to
the
unit
under
test.
2.
After
removing
an
electrical
assembly
equipped
with
E
SD
devices,
place
the
assembly
on
a
conductive
surface
such
as
aluminum
foil,
to
prevent
electrostatic
charge
buildup
or
exposure
of
the
assembly.
3.
Use
only
a
grounded-tip
soldering
iron
to
solder
or
unsolder
E
SD
devices.
4.
Use
only
an
anti-static
solder
removal
device.
Some
solder
removal
devices
not
classified
as
"
anti-static
"
can
generate
electrical
charges
sufficient
to
damage
E
SD
devices.
5.
Do
not
use
freon-propelled
chemicals.
These
can
generate
electrical
charges
sufficient
to
damage
E
SD
devices.
6
.
Do
not
remove
a
replacement
E
SD
device
from
its
protective
package
until
immediately
before
you
are
ready
to
install
it.
(Most
replacement
E
SD
devices
are
packaged
with
leads
electrically
shorted
together
by
conductive
foam,
aluminum
foil
or
comparable
conductive
materials).
7
.
Immediately
before
removing
the
protective
material
from
the
leads
of
a
replacement
E
SD
device,
touch
the
protective
material
to
the
chassis
or
circuit
assembly
into
which
the
device
will
by
installed.
CAUTION
:
BE
SURE
NO
POWER
IS
APPLIED
TO
THE
CHASSIS
OR
CIRCUIT
,
AND
OBSERVE
ALL
OTHER
SAFETY
PRECAUTIONS.
8
.
Minimi
z
e
bodily
motions
when
handing
unpackaged
replacement
E
SD
devices.
(
O
therwise
harmless
motion
such
as
the
brushing
together
of
your
clothes
fabric
or
the
lifting
of
your
foot
from
a
carpeted
floor
can
generate
static
electricity
sufficient
to
damage
an
E
SD
device).
CAUTION.
GRAPHIC
SYMBOLS
T
HE
LIG
H
T
N
I
N
G
FLAS
H
WIT
H
APR
O
W
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N
A
N EQ
UILAT
E
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ITUD
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PR
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RMATI
ON
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N
S
E
RVIC
E
LIT
E
RATUR
E
.
SAFETY
PRECAUTIONS
Summary of Contents for x-rsm400dvh
Page 4: ...SECTION 5 DIAGNOSIS CONNECTION 5 1 1 1 ...
Page 11: ...1 8 ...
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Page 59: ...3 51 3 52 PRINTED CIRCUIT BOARD DIARGAMS 1 1 MAIN P C BOARD DIAGRAM TOP VIEW ...
Page 60: ...1 2 MAIN P C BOARD DIAGRAM BOTTOM VIEW 3 53 3 54 ...
Page 61: ...3 55 3 56 2 1 DVD P C BOARD DIAGRAM TOP VIEW ...
Page 62: ...2 2 DVD P C BOARD DIAGRAM BOTTOM VIEW 3 57 3 58 ...
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