Oki ML421 Maintenance Manual
Also see for ML420 Series: Specification sheetUser guideUser guideInstallationInstallation
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Contents
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42113901 Rev.2 53 /Oki Data CONFIDENTIAL3. ASSEMBLY/DISASSEMBLYThis section explains the procedures for removing and installing various assemblies and unitsin the field.Description is mainly limited to the removal procedure; installation should basically be performedin the reverse sequence of the removal procedure.3.1 Precaution for Parts Replacement(1) Remove the AC cable and the interface cable before disassembling or assembling.(a) Turn off the AC power switch. Remove the AC input plug of the AC cable from thereceptacle. Remove the AC cable from the inlet on the printer.(b) To connect the AC cable again, connect it to the inlet on the printer first, then insertthe AC input plug into a receptacle.Interface cableInletAC cableAC receptacleAC input plug(2) Do not disassemble the printer as long as it is operating normally.(3) Do not remove unnecessary parts, and limit the disassembly area as much as possible.(4) Use the designated service tools.(5) Carry out disassembly in the prescribed sequence; otherwise, damage to the parts mayresult.(6) It is advisable to temporarily install screws, snap rings and other small parts in their originalpositions to avoid losing them.(7) Whenever handling the microprocessors, ROM, RAM IC chips and boards, do not usegloves which may cause static electricity.(8) Do not place the printed circuit board directly on the equipment or on the floor.(9) If adjustment is specified in the middle of installation, follow the instructions. |
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