NEC MultiSync FP1350 Service Manual page 112

4. Cautions for cleaning AR-firm CRT
4-1. Do not rub or hit CRT surface with hard object.
4-2. Wipe off the dust softly with a dry soft cloth if necessary.
Do not use the acid and alkaline cleaner, solution such as detergent or thinner, etc.
If dust can not be wiped off with a dry soft cloth, use the water, ethyl alcohol, neutral glass cleaner or
detergent.
4-3. If and when necessary to touch CRT surface with tool, perform it with care.
4-4. Be careful not to damage or scratch CRT surface with a hard foreign object, etc. while cleaning.
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