Panasonic LIFI PT-50LCZ7, Service Manual

Page: 63 / 100

9 Maintenance
9.1. Cleaning Methods
THE SCREEN UNIT AND THE MIRROR
-
THE SCREEN UNIT (Lenticular Screen, Fresnel Lens)
It is strongly recommended that the Lenticular Screen surface
(outside) and the Fresnel Lens surface (inside) should be
wiped gently with a clean, soft, dry cloth to remove the dirt.
Note:
1. If the dirt cannot be removed by wiping with a clean, soft, dry
cloth, use a clean, soft, dry cloth moistened with diluted
neutral pH liquid cleanser or a lens cleaner (usually
containing a small amount of ethyl alcohol) and wipe lightly.
Take care not to leave any streaks.
Do not use cleaning materials containing methyl alcohol,
acetone, or dichloromethane.
2. Use an air blower to clean the inner surface of the Lenticular
Screen and the outer surface of the Fresnel Lens (the
surfaces that one another). These surfaces must not be
wiped with a cloth.
- THE MIRROR
Remove any dirt with an air blower or wipe with a clean, soft,
dry cloth. If wiped too forcefully, the surface of the Mirror can
be damaged. If wiping with a clean, dry cloth does not remove
the dirt, the Mirror must be replaced.
Fig. 6-1
THE PROJECTION LENS
Use lens cleaning paper and cleaner available at your local
camera shop, etc. Dampen the cleaning paper with cleaner
and gently wipe the surface of the lens from the center outward
to remove dust.
Fig. 6-2
Lens
Air Filter
Air Filter
Lenticular Screen surface
(outside)
Screen Unit
Mirror
Fresnel Lens surface
(inside)
- THE BEZEL
THE FILTER ON THE OPT/TV UNIT
CAUTION:
Operating with torn or damaged Air Filter may cause damage
to the OPT/TV Unit.
Remove the OPT/TV Unit from rear. Then, clean the air filters.
Gently remove any accumulated dust from filter with a vacuum
cleaner; use extreme care so as not to damage or tear the
filters.
Fig. 6-3
PT-50LCZ70 / PT-56LCZ70 / PT-61LCZ70 / PT-50LCZ7 / PT-56LCZ7 / PT-61LCZ7
63