PT-D7700U, PT-D7700E (serv.man2) - Panasonic Projector Other Service Manuals (repair manual). Page 7

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Cleaning procedure
Confirmation of the dust
Confirmation of the dust
1. Confirm whether the surface of the
prism does not have dust.
*When there is dust, remove it with blow air.
*When cannot remove dust, let ethanol soak into a 
cotton swab and remove it.
*Do not leave the minute dust either.
1 Pix = About 14μm
Prism side
DMD tip side
2. Confirm whether the surface of the
DMD chip does not have dust.
*When there is dust, remove it with blow air. 
*When cannot remove dust, let ethanol soak into a 
cotton swab and remove it.
*Do not leave the minute dust either.
1 Pix = About 14μm
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