Dell 5110cn Color Laser Printer Service Manual - Page 20
Cautions for Service Operations
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Chapter 1 Troubleshooting 1.3 Cautions for Service Operations 1) Be sure to remove the power cord except when it is specifically required. If the printer is kept ON, never touch the conductive parts while it is not specifically required. The power switch/inlet of LVPS is live even while the power supply is cut off. Never touch the live parts. 2) When checking some parts with covers removed and with the interlock and safety and power switches ON, remove the connector (P/J151) on the ROS ASSY except when it is specifically required. When checking some parts with covers removed and with the interlock and safety and power switches ON, laser beams may be irradiated from the ROS ASSY. Since it is dangerous, be sure to remove the connector (P/J151) while it is not required. 3) When checking some parts with the left cover removed and power ON, be sure to remove the connector (P/J141) on the HVPS while it is not required. When checking some parts with the left cover removed and power ON, high voltage may be applied by the HVPS. Be sure to remove the connector (P/J141) on the HVPS. When connecting the connector (P/J141) on the HVPS according to the instructions of the FIP, never touch the HVPS and parts of high voltage. 4) When using Diag. tools or other tools of high voltage, be sure to keep them covered except when otherwise specified. When using Diag.Tool or other tools of high voltage, never touch parts of high voltage. When using Diag.Tool or other tools of high voltage, be sure to follow the procedure of this manual. 5) When operating the driving units using the Diag or other tools, be sure to keep them covered unless otherwise specified. When operating the driving units using the Diag or other tools, never touch the driving units. When operating the driving units using Diag or other tools, be sure to observe the procedures in this manual. 6) When touching hot parts, be careful not to get burnt. 7) Workers should wear a wrist band or the like to remove static electricity from their body , grounding their body while working. 1 - 3