Sharp EL-9900 User Manual

• Do not carry the calculator around in your back pocket, as it

may break when you sit down. The display is made of glass and

is particularly fragile.

• Keep the calculator away from extreme heat such as on a car

dashboard or near a heater, and avoid exposing it to exces-

sively humid or dusty environments.

• Since this product is not waterproof, do not use it or store it

where fluids, for example water, can splash onto it. Raindrops,

water spray, juice, coffee, steam, perspiration, etc. will also

cause malfunction.

• Clean with a soft, dry cloth. Do not use solvents.

• Do not use a sharp pointed object or exert too much force when

pressing keys.

• Avoid excessive physical stress.