Introduction
vi 11/06 FaxCentre 2121/2121L
Cautions
WARNING
Precautions for service jobs.
• A star washer and spring washer, if used originally, must be reinstalled. Omitting
them may result in contact failure which could cause an electric shock or fire.
• When reassembling parts, make sure that the correct screws (size, type) are used
in the correct places. Using the wrong screw could lead to stripped threads, poorly
secured parts, poor insulating or grounding, and result in a malfunction, electric
shock or injury.
• Take great care to avoid personal injury from possible burrs and sharp edges on
the parts, frames and chassis of the product.
• When moving the product or removing an option, use care not to injure your back
or allow your hands to be caught in mechanisms.
WARNING
Precautions for servicing with covers and parts removed.
• Wherever feasible, keep all parts and covers mounted when energizing the prod-
uct.
• If energizing the product with a cover removed is absolutely unavoidable, do not
touch any exposed live parts and use care not to allow your clothing to be caught
in the moving parts. Never leave a product in this condition unattended.
• Never place disassembled parts or a container of liquid on the product. Parts fall-
ing into, or the liquid spilling inside, the mechanism could result in an electric
shock or fire.
• Never use a flammable spray near the product. This could result in a fire.
• Make sure the power cord is unplugged before removing or installing circuit
boards or plugging in or unplugging connectors.
• Always take care when actuating an interlock switch when a cover is opened or
removed. The use of folded paper or some other object may damage the interlock
switch mechanism, possibly resulting in an electric shock, injury or blindness.
Precautions for the working environment.
• The product must be placed on a flat, level surface that is stable and secure.
• Never place this product or its parts on an unsteady or tilting workbench when
servicing.
• Provide good ventilation at regular intervals if a service job must be done in a con-
fined space for a long period of time.
• Avoid dusty locations and places exposed to oil or steam.
• Avoid working positions that may block the ventilation ports of the product.
Precautions for the Laser Beam.
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