Read LG 32LD400 / 42LD400 Service Manual online
CONFIDENTIAL – DO NOT COPY
Page 2-4
File No. SG-0361
(6) Do not touch, push or rub the exposed polarizers with glass, tweezers
or anything harder than HB pencil lead. And please do not rub with
dust clothes with chemical treatment. Do not touch the surface of
polarizer for bare hand or greasy cloth.(Some cosmetics are
detrimental to the polarizer.)
dust clothes with chemical treatment. Do not touch the surface of
polarizer for bare hand or greasy cloth.(Some cosmetics are
detrimental to the polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent
cotton or other soft materials like chamois soaks with petroleum
benzine. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and
alcohol because they cause chemical damage to the polarizer.
benzine. Normal-hexane is recommended for cleaning the adhesives
used to attach front / rear polarizers. Do not use acetone, toluene and
alcohol because they cause chemical damage to the polarizer.
(8) Wipe off saliva or water drops as soon as possible. Their long time
contact with polarizer causes deformations and color fading.
(9) Do not open the case because inside circuits do not have sufficient
strength.
9-2. Operating Precautions
(1) The spike noise causes the mis-operation of circuits. It should be
lower than following voltage:
V=±200mV (Over and under shoot voltage)
(2) Response time depends on the temperature.(In lower temperature, it
becomes longer.)
(3) Brightness depends on the temperature. (In lower temperature, it
becomes lower.) And in lower temperature, response time(required
time that brightness is stable after turned on) becomes longer.
time that brightness is stable after turned on) becomes longer.
(4) Be careful for condensation at sudden temperature change.
Condensation makes damage to polarizer or electrical contacted parts.
And after fading condensation, smearor spot will occur.
And after fading condensation, smearor spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is
likely to occur.
(6) Module has high frequency circuits. Sufficient suppression to the
electromagnetic interference shall be done by system manufacturers.
Grounding and shielding methods may be important to minimized the
interference.
Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM.
Otherwise, LCM can’t be operated its full characteristics perfectly.
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