SAFETY PRECAUTIONS
CAUTION: No modifications of any circuit should be attempted. Service work should only be pertormed
after
you are thoroughly familiar with all of the following safety check and servicing
glJidelin~s.
SAFETY
CHECK
Care should be taken while serving this analog color display because of the high voltage used in the deflection
circuits. These voltages are exposed
in
such areas as the associated flyback and yoke circuits.
FIRE & SHOCK HAZARD
• Insert an isolation transformer between the analog color display and
AC
power line before servicing chassis.
•
In
servicing, pay attention to original lead dress especially
in
the high voltage circuit. If a short circuit is found,
replace all parts which have been overheated as a result of the short circuit.
• All the protective devices must be reinstalled per original design.
• Soldering must be inspected for possible cold solder points, frayed leads, damaged insulation, solder splashes
or
sharp solder points.
Be
certain to remove all foreign material.
IMPLOSION PROTECTION
Picture tube
in
this monitor employs integral implosion protection system, but care should be taken to avoid
damage and scratching during installation.
Use only same type replacement picture tubes.
IMPORTANT
SAFE:TY
NOTICE: There are special components used In
~nalQgcolor
displEiY~
which
ate
important for safety. These parts are shaded on the scl1erMtlc
diagr',a.rn
and on the replacement parts list. It
is
essentia.,!
thlit
these critical parts
should be replaced
With
m~nufactl,Jre'~
specified parts.
to
prevent
x-
RADIATION,
shock.,
fire
or
other hazan:ls: Do hot modify
the
origlnlil
qesign
without
getting
a.
written
permi~siQn1rorn
DAEW09
EI.,ECTRONICS CO.o(this
wlll
Void
thl;lOJ'i.Qinlil
part$ lind labor
wEirrEinW.
X-RADIATION
WARNING:
The only potential source of X-Radiation
is
the picture
tUbe.
However
whenth~
high
\toltElgec1rcl,Ii:try
is operating properly, there is no possibility of an X-Radiation problem,
The.
bs'$lc
pr~cElytib!1
which must be exercised is to keep the high voltage at the followiligl/iQfbry recommended
level.
';"
""
NOTE:
It is important to use an accurate, periodically ca.librated high voltage meter,
•
To
measure the high voltage, use a high-impedance high-voltage meter,
Connect(-) to chassis and (+) to the CRT anode button.
• Turn the Contrast
& Brightness control fully counterclockwise,
• Measure the high voltage. The.high voltage meter should indicat\:!
the
fpOow)rig,
tactol)'r'e.:-
commended level.
• If the upper meter indication exeeds the maximum level, im.mediate ,§ervice is reqI,Jireq
to
prevent the possibility of premature component failure. "
•
To
prevent X-Radiation possibility, it is essential to use the specified
plCtUff:j
tUbe',
• The nominal high voltage is 24KV
or
below,ang
mUst
not exceeq
2!5KV~t
~erp
bl'la.rn
eurrer)t
at
rated voltage.
2
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