Ricoh SP C440dn, Field Service Manual, Page: 6 / 654

Power Plug and Power Cord
• Before serving the machine (especially when responding to a service call), always make sure that
the power plug has been inserted completely into the power source. A partially inserted plug could
lead to heat generation (due to a power surge caused by high resistance) and cause a fire or other
problems.
• Always check the power plug and make sure that it is free of dust and lint. Clean it if necessary. A
dirty plug can generate heat which could cause a fire.
• Inspect the length of the power cord for cuts or other damage. Replace the power cord if
necessary. A frayed or otherwise damaged power cord can cause a short circuit which could lead
to a fire or personal injury from electrical shock.
• Check the length of the power cord between the machine and power supply. Make sure the power
cord is not coiled or wrapped around any object such as a table leg. Coiling the power cord can
cause excessive heat to build up and could cause a fire.
• Make sure that the area around the power source is free of obstacles so the power cord can be
removed quickly in case of an emergency.
• Make sure that the power cord is grounded (earthed) at the power source with the ground wire on
the plug.
• Connect the power cord directly into the power source. Never use an extension cord.
• When you disconnect the power plug from the power source, always pull on the plug, not the
cable.
After Installation, Servicing
Disposal of Used Items
• Never incinerate used toner or toner cartridges.
• Toner or toner cartridges thrown into a fire can ignite or explode and cause serious injury. At the
work site always carefully wrap used toner and toner cartridges with plastic bags to avoid spillage
before disposal or removal.
• Always dispose of used items (developer, toner, toner cartridges, OPC drums, etc.) in accordance
with the local laws and regulations regarding the disposal of such items.
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