Oki MB472w Maintenance Manual

Also see for MB472w: Safety and Warranty Guide Maintenance manual

Contents

Oki MB472w Maintenance Manual Manual pdf 122 page image

45762101TH Rev.1 4-2Oki Data CONFIDENTIAL 4.REPLACEMENT OF PARTS4.1 Notes on replacement of parts(1) Prior to replacing a part, unplug the AC cord and the interface cable.(a) Be sure to use the following procedure to unplug the AC cord:Turn off the printer [Hold down the power switch for about a second.].Pull out the AC plug of the AC cord from the AC power source.Unplug the AC cord and the interface cable.(2) Do not disassemble the printer so long as it operates properly.(3) Minimize disassembly. Do not detach parts not shown in the part replacementprocedure.(4) Use the replacement tools specified.(5) Conduct disassembly in the order instructed, or part damage may occur.(6) Removed small parts, such as screws or collars, should be tentatively installed intheir original positions.(7) Do not use static-prone gloves when handling integrated circuits (ICs), includingmicroprocessors, and ROM and RAM chips, or circuit boards.(8) Do not place printed-circuit boards (PCBs) directly on the printer or a floor.UnpluggingPlugging(b) Always use the following procedure to reconnect the printer:Connect the AC cord and the interface cable to the printer.Insert the AC plug into the AC power source.Turn on the printer [Hold down the power switch for about a second to turnon the power.].Warning Electric shock hazardWhen replacing the low-voltage power supply, electric shock may occur. Wearinsulated gloves, or be careful not to touch the conductors or terminals of thepower supply directly. After the AC cord is unplugged, the capacitor may takeabout one minute to discharge completely or, due to PCB breakdown, could notdischarge. Use caution about electric shock.