42LV4400 LC420EUG-RDV2-7R1 - LG TV Service Manual (repair manual). Page 7

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CONFIDENTIAL – DO NOT COPY 
Page 2-4
 
File No. SG-0000034
 
 
9-4. Precautions for Strong Light Exposure 
Strong light exposure causes degradation of polarizer and color filter. 
 
9-5. Storage 
When storing modules as spares for a long time, the following precautions are necessary. 
(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep 
the temperature between 5°C and 35°C at normal humidity. 
(2) The polarizer surface should not come in contact with any other object. It is recommended 
that they be stored in the container in which they were shipped. 
(3) Storage condition is guaranteed under packing conditions. 
(4) The phase transition of Liquid Crystal could be recovered if the LCM is released at the 
normal condition after the low or over the storage temperature. 
 
9-6. Handling Precautions for Protection Film 
(1) The protection film is attached to the bezel with a small masking tape
When the protection film is peeled off, static electricity is generated between the film and 
polarizer. This should be peeled off slowly and carefully by people who are electrically 
grounded and with well ionblown equipment or in such a condition, etc. 
(2) When the module with protection film attached is stored for a long time, sometimes there 
remains a very small amount of glue still on the bezel after the protection film is peeled off. 
(3) You can remove the glue easily. When the glue remains on the bezel surface or its vestige 
is recognized, please wipe them off with absorbent cotton waste or other soft material like 
chamois soaked with normalhexane.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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