ViewSonic VE150 Service Manual - Page 4

VE150b-2, Service, Manual

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VE150(b)-2 Service Manual 1. PRECAUTION AND NOTICES 1.1. SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principle that a user's safety comes first. However, improper use or installation may cause damage to the monitor as well as to the user. Carefully go over the following WARNINGS before installing and keep this guide handy. WARNINGS: ♦ This monitor should be operated only at the correct power sources indicated on the label on the rear end of the monitor. If you're unsure of the power supply in your residence, consult your local dealer or power company. ♦ Use only the special power adapter that comes with this monitor for power input. ♦ Do not try to repair the monitor your self as it contains no user-serviceable parts. This monitor should only be repaired by a qualified technician. ♦ Do not remove the monitor cabinet. There is high-voltage parts inside that may cause electric shock to human bodies, even when the power cord is unplugged. ♦ Stop using the monitor if the cabinet is damaged. Have it checked by a service technacian. ♦ Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable immediately and consult your service technician. ♦ Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply non-ammonia based cleaner onto the cloth, not directly onto the glass screen. ♦ Keep the monitor away from magnetic objects, motors, TV sets, and transformer. ♦ Do not place heavy objects on the monitor or power cord. 1.2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltages, wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards. 1.3. SERVICE NOTES 1. When replacing parts or circuit boards, clamp the lead wires around terminals before soldering. 2. When replacing a high wattage resistor (more than 1W of metal oxide film resistor) in circuit board, keep the resistor about 5mm away from circuit board. 3. Keep wires away from high voltage, high temperature components and sharp edges. 4. Keep wires in their original position so as to reduce interference. 5. Usage of this product please refer to also user's manual. ViewSonic Corporation Confidential - Do Not Copy 6/29/2001

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VE150(b)-2
Service
Manual
1.
PRECAUTION
AND
NOTICES
1.1.
SAFETY
PRECAUTIONS
This
monitor
is
manufactured
and
tested
on
a
ground
principle
that
a
user's
safety
comes
first.
However,
improper
use
or
installation
may
cause
damage
to
the
monitor
as
well
as
to
the
user.
Carefully
go
over
the
following
WARNINGS
before
installing
and
keep
this
guide
handy.
WARNINGS:
♦
This
monitor
should
be
operated
only
at
the
correct
power
sources
indicated
on
the
label
on
the
rear
end
of
the monitor.
If
you're
unsure
of
the
power
supply
in
your
residence,
consult
your
local
dealer
or
power
company.
♦
Use
only
the
special
power
adapter
that
comes
with
this
monitor
for
power
input.
♦
Do
not
try
to
repair
the
monitor
your
self
as
it
contains
no
user
-serviceable
parts.
This
monitor
should
only
be
repaired
by
a
qualified
technician.
♦
Do
not
remove
the
monitor
cabinet.
There
is
high
-voltage
parts
inside
that
may
cause
electric
shock
to
human
bodies,
even
when
the
power
cord
is
unplugged.
♦
Stop
using
the
monitor
if
the
cabinet
is
damaged.
Have
it
checked
by
a
service
technacian.
♦
Put
your
monitor
only
in
a
clean,
dry
environment.
If
it
gets
wet,
unplug
the
power
cable
immediately
and
consult
your
service
technician.
♦
Always
unplug
the
monitor
before
cleaning
it.
Clean
the
cabinet
with
a
clean,
dry
cloth.
Apply
non
-ammonia
based
cleaner
onto
the
cloth,
not
directly
onto
the
glass
screen.
♦
Keep
the
monitor
away
from
magnetic
objects,
motors,
TV
sets,
and
transformer.
♦
Do
not
place
heavy
objects
on
the
monitor
or
power
cord.
1.2.
PRODUCT
SAFETY
NOTICE
Many
electrical
and
mechanical
parts
in
this
chassis
have
special
safety
visual
inspections
and
the
protection
afforded
by
them
cannot
necessarily
be
obtained
by
using
replacement
components
rated
for
higher
voltages,
wattage,
etc.
Before
replacing
any
of
these
components
read
the
parts
list
in
this
manual
carefully.
The
use
of
substitute
replacement
parts
which
do
not
have
the
same
safety
characteristics
as
specified
in
the
parts
list
may
create
shock,
fire,
or
other
hazards.
1.3.
SERVICE
NOTES
1.
When
replacing
parts
or
circuit
boards,
clamp
the
lead
wires
around
terminals
before
soldering.
2.
When
replacing
a
high
wattage
resistor
(more
than
1W
of
metal
oxide
film
resistor)
in
circuit
board,
keep
the
resistor
about
5mm
away
from
circuit
board.
3.
Keep
wires
away
from
high
voltage,
high
temperature
components
and
sharp
edges.
4.
Keep
wires
in
their
original
position
so
as
to
reduce
interference.
5.
Usage
of
this
product
please
refer
to
also
user's
manual.
6/29/2001
ViewSonic
Corporation
Confidential
-
Do
Not
Copy