Safety vii
Service Safety Summary
General Guidelines
For qualified 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.
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 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® 6300/6350 Color 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 product does not emit hazardous laser 
radiation; which 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.