1 – 3Chapter 1 Troubleshooting1.3 Cautions for Service Operations1) When servicing the printer, be sure to remove the power cord from the power outlet except whenabsolutely necessary.Unless specifically indicated, whenever the printer power is ON, never touch any ofthe electrical components.The power switch/inlet of the LVPS has voltage present even while the powersupply is cut off. Never touch any of the electrical components.2) When it is necessary to check a component(s) with covers removed and with the interlock andsafety and power switches ON, remove the connector (P/J140) on the ROS ASSY.When checking some parts with covers removed and with the interlock and safetyand power switches ON, laser beams may be emitted from the ROS ASSY. Since itis dangerous, be sure to remove the connector (P/J140) while performing service.3) When it is necessary to check a component(s) with the left cover removed and power ON, be sureto remove the HVPS connector (P/J31) while servicing the printer.When checking some parts with the left cover removed and power ON, high voltagemay be applied by the HVPS. Be sure to remove the connector (P/J31) on the HVPS.When connecting the connector (P/J31) on the HVPS according to the instructionsof the FIP, never touch the HVPS or any of its parts.4) When using Diagnostic tools or a meter to measure high voltage, be sure to keep the componentscovered unless specified.When using Diagnostic Tool or a meter to measure high voltage, never touch partsof high voltage.Be sure to follow the procedures in this manual.5) When operating a drive unit using the Diagnostic or other tools, be sure to keep them coveredunless otherwise specified.Never touch the drive units when operating them using the Diagnostic or othertools. Be sure to observe the procedures in this manual.6) Avoid burns by not touching any fusing components until they have had sufficient time to cooldown.7) Damage to sensitive electronic components should be avoided by grounding the body using a wristband or other suitable Electrostatic Discharge (ESD) tools.
