Sharp LC-40LE820E Service Manual page 29

2. Glass cleaning
CAUTION: (1) Visual inspection is done on the black mat.
(2) Dust and trash are taken with an air blow.
Air blow
(3) Dirt is wiped out with cloth.
Front side: Moufas
Back side: Cotton (clean wiper SF-30C)
Moufas
(4) When dirt doesn't clean, it is wiped out with Alcohol.
Alcohol
(5) Dirt is wiped out with the Ethanol and clean cloth.
When wipe off a dirt the trace which wiped do not be left.
black mat
glass
Cotton
Cotton
4 – 17
LC-40/46/52LE820E (1st Edition)