Xerox Phaser 4500, Service Manual

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Service Manual xvii
Service Safety Summary
General Guidelines
For Xerox-certified service personnel only: Refer also to the preceding Power
Safety Precautions.
Avoid servicing alone: Do not perform internal service or adjustment of this
product unless another person capable of rendering first aid or resuscitation is present.
Use care when servicing with power:
Dangerous voltages may exist at several
points in this product. To avoid personal injury, do not touch exposed connections and
components while power is on. Disconnect power before removing the power supply
shield or replacing components.
Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces and
other metallic objects could come into contact with dangerous voltages and currents.
Power source: This product is intended to operate from a power source that will
not apply more then 264 volts rms for a 220 volt AC outlet or 140 volts rms for a 110
volt AC outlet between the supply conductors or between either supply conductor and
ground. A protective ground connection by way of the grounding conductor in the
power cord is essential for safe operation.
Warning Labels
Read and obey all posted warning labels. Throughout the printer, warning labels are
displayed on potentially dangerous components. As you service the printer, check to
make certain that all warning labels remain in place.
Safety Interlocks
Make sure all covers and the printer’s front panel are in place and all interlock
switches are functioning correctly after you have completed a printer service call. If
you bypass an interlock switch during a service call, use extreme caution when
working on or around the printer.
CLASS 1 LASER PRODUCT
The Phaser 4500 Laser Printer is certified to comply with Laser Product Performance
Standards set by the U.S. Department of Health and Human Services as a Class 1
Laser Product. This means that this is a class of laser product that does not emit
hazardous laser radiation; this is possible only because the laser beam is totally
enclosed during all modes of customer operation. When servicing the printer or laser
unit, follow the procedures specified in this manual and there will be no hazards from
the laser.