Epson FX-80 Technical Service Data page 11

PRELIMINARY SERVICE
CHECKS
(Continued)
PREVENTATIVE MAINTENANCE
ENVIRONMENT
Computers
perform
best
in
a clean, coo! area that
is
below 80 degrees Fahrenheit
and
free of dust and
smoke
particles.
Even
though
home
Computers
are not affected by
cigarette
smoke
as
much
as
commercial Computers
are affected,
it
is
better
to
maintain a smoke-free area
around
the
Computer.
Do
not block cabinet vents
of
any
of
the
Computer
system; Computer,
Monitor,
Printer, or other
power
devices.
ELECTRICAL
POWER
Variations
in
the
line
voltage can
affect the Computer.
Try to avoid these
fluctuations by using an
AC
receptacle that
is
on
a
power
line
not used
by appliances
or
other heavy current demand
devices.
A
power-surge
protector, power-line conditioner, or
non-interruptable
power
supply
may
be
needed
to
cure the problem. Do
not switch power
On
and
Off frequently.
KEYBOARD
Liquids
spilled into the Keyboard can
ruin
it.
Immediately
after a spill occurs, disconnect the
Computer power
plug
from
AC
power
outlet.
Then,
if
circuitry
or contacts
are contaminated, disassemble
the Keyboard and
carefully rinse the
Keyboard
printed
circuit
board
with
distilled
water
and
let
it
dry.
Use
a cotton
swab
to clean
between
the keys. Use
a non-abrasive con-
tact
cleaner
and
lint-free
wipers
on
accessible connectors and
contacts.
DISK DRIVES
Clean the read/write heads
of the Disk Drives about once
a
month
or after 100 hours usage. Use
only an approved head
clean-
ing
kit.
Handle
carefully to
preserve proper disk
head
alignment.
A
sudden
bump
or
jolt
to
the Disk Drives can knock
the disk
head
out
of
alignment.
If
the disk
drive
must
be transported, place
an old disk
in
slot
and
close door during
transport.
Store disks
in
their protective covers and
never touch the disk
surface. Observe
the disk handling precautions usually
found
on
the
back
of
disk protective covers.
PRINTERS
Carefully
vacuum
the
Printer regularly.
Wipe
surface areas clean using
a light all-purpose cleaner.
Do
not
oil
the
machine.
The
oil will
collect abrasive
grit
and
dust.
The
dust
will act as a blanket. This can cause components
to
overheat and
fail.
STATIC ELECTRICITY
Static
electricity
discharge can
affect the
Computer.
In
order
to
minimize
the
possibility, use
anti-static
mats,
sprays, tools
and
materials,
and
maintain good
humidity
in
the Computer
environment.
MONITOR
Use an
isolation transformer
with
any Monitor
that
does
not
come
as part of the
system
since
some
Monitors use a
HOT
chassis (chassis connected
to
one
side
of
the
AC
line).
The
face
of
the Monitor should never be
left
on
for long periods
of
time
at
high brightness
level
except
when
pattern
is
being
changed
periodically.
Use
caution
when
cleaning
anti-glare screens, to
preserve the
glare-reduction
feature.
Xil