-14-
Cleaning
cleaning with air spray
1. Remove the cabinet top following to “Mechanical Dis-
assembly”.
. Clean up the LCD panel and polarizing plate by using
the air spray from the cabinet top opening.
caution:
Use a commercial (inert gas) air spray designed for
cleaning camera and computer equipment. Use a resin-
based nozzle only. Be vary careful not to damage optical
parts with the nozzle tip. Never use any kind of cleanser
on the unit. Also, never use abrasive materials on the
unit as this may cause irreparable damage.
After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass,
lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit.
Remove dust and other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean the
optical unit.
disassembly cleaning
Disassembly cleaning method should only be performed
when the unit is considerable dirty and cannot be suf-
ficiently cleaned by air spraying alone.
Be sure to readjust the optical system after perform-
ing disassembly cleaning.
1. Remove the cabinet top and main units following to
“Mechanical Disassembly”.
. Remove the optical base top following to “Optical
Unit Disassembly”. If the LCD panel needs cleaning,
remove the LCD panel unit following to “LCD panel
replacement”.
3. Clean the optical parts with a soft cloth. Clean ex-
tremely dirty areas using a cloth moistened with al-
cohol.
caution:
The surface of the optical components consists of mul-
tiple dielectric layers with varying degrees of refraction.
Never use organic solvents (thinner, etc.) or any kind of
cleanser on these components.
Since the LCD panel is equipped with an electronic cir-
cuit, never use any liquids (water, etc.) to clean the unit.
Use of liquid may cause the unit to malfunction.
Maintenance
Summary of Contents for PLC-XTC50AL
Page 99: ... 99 IC Block Diagrams ISL98001 A D Converter IC2201 L3E06170 S H IC501 IC531 IC561 ...
Page 100: ... 100 IC Block Diagrams M62393 DAC IC7971 L3E07111 LCD DRIVE DIGITAL GAMMA IC401 ...
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Page 102: ... 102 IC Block Diagrams PW392 Scaler IC301 PW610 Keystone IC2301 ...
Page 103: ... 103 IC Block Diagrams TE7783 I O Expander IC4801 TPA3123 Audio Output IC5051 ...
Page 104: ... 104 IC Block Diagrams UPC324GR Ope Amp IC1423 ...
Page 158: ... KH7AM Nov 2009 DC 200 Printed in Japan SANYO Electric Co Ltd ...
