User`s manual

GP-477R/577R Series User's Manual
7-1
Chapter 7
Maintenance
1. Regular Cleaning
2. Periodic Check Points
3. Changing the Backlight
When the surface or the frame of the display gets dirty, soak a soft cloth in water
with a neutral detergent, wring the cloth tightly, and wipe the display.
• Do not use paint thinner, organic solvents, or a strong acid compound to
clean the unit.
• Do not use hard or pointed objects to operate the touch-screen panel, since
it can damage the panel surface.
The installation gasket protects the GP and improves its water resistance.
A gasket which has been used for a long period of time may
have scratches or dirt on it, and could have lost much of its
water resistance. Be sure to change the gasket periodically (or
when scratches or dirt become visible).
nn
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n Attaching the Installation Gasket
1. Cleaning the Display
2. Installation Gasket Replacement
1) Each of the GP's corners has 4 ribs that hold the
installation gasket in place. Push the gasket into
the side of the GP, so that it is held by all 4 ribs.
• The gasket is flexible, but not
elastic, and may tear if stretched
too far. Do not stretch the gasket
around the ribs, only push.
• Be sure the gasket's seam is not
inserted into any of the unit's
corners, only in the straight
sections of the groove. Inserting
it into a corner may lead to its
eventually tearing.
Ribs
Seam
7.1 Regular Cleaning