Sega INITIAL "D" TYPE TWIN. - Manual (Page 81)

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For the purpose of static prevention, special coating is applied to the CRT face
of this product. To protect the coating, pay attention to the following points.
Damaging the coating film can cause electric shock to the customers.
15-2 CLEANING THE CRT SURFACES
Static preventive coating is applied to the CRT surfaces. When cleaning, pay
attention to the following points. Peeling off of static preventive coat can cause
electric shock.
 Remove smears by using a dry, soft cloth (flannels, etc.). Do not use a coarse
gauze, etc.
 For smear removing solvent, alcohol (ethanol) is recommended. When using
chemical detergent, be sure to follow instructions below:
• Dilute chemical detergent with water and dip a soft cloth in and then thor-
oughly wring it to wipe smears off.
• Do not use a chemical detergent containing an abradant, powder or bleaching
agent.
• Do not use alkaline chemical detergents such as "glass cleaner" available on
the market or solvents such as thinner, etc.
 Do not rub or scratch the CRT face with hard items such as brushes, scrub
brush, etc.
Clean the CRT surfaces once a week. When cleaning, pay attention to the above caution so that
the antistatic coating will not come off.
Aluminum Foil
 Do not apply or rub with
a hard item (a rod with
pointed edge, pen, etc.) to
or on the CRT surfaces.
 Avoid applying stickers,
seals, etc. on the CRT face.
 Do not remove aluminum
foils from the CRT corners.
Removing the aluminum
foils can cause static
prevention effects to be
lowered.