Oki Data CONFIDENTIAL43967002TH Rev. 1 142 /4. Part Replacement4.1 Precautions when replacing part(1) Before starting part replacement, be sure to disconnect the AC power cord and theinterface cables.(a) When disconnecting the AC power cord, follow the procedure shown below.Set the MFP POWER to the OFF “O” position.Disconnect the AC insertion plug of the AC power cord from the AC powersource.Disconnect the earth wire from the earth terminal of the AC power source outlet.Disconnect the AC power cord and interface cables from the MFP.(2) Do not disassemble the MFP while the MFP is operating normally.(3) Restrict the MFP disassembly as small as possible. Do not remove parts that areshown in the part replacement procedure.(4) Use the specified maintenance tools.(5) Disassembly should be performed in the specified order. If parts are removed in thespecified order, part can be damaged.(6) Small parts such as screw and collar can be easily lost. Attach them tentatively totheir original positions.(7) When handing IC such as microprocessor, ROM and RAM, and when handlingPCB board, do not use the glove that can easily generate static electricity.(8) Do not place PCB directly on any equipment or on the floor.Warning Electric shock can occur.When replacing the low voltage power supply, there is a danger of electric shock.Be sure to wear an insulation gloves or do not touch the electrically conductionareas or terminal directly by hand during the part replacement work.It takes approx. 1 minute for capacitors to be completely discharged after the ACpower cord is disconnected. Be careful not to receive electric shock becausecapacitors may not discharge in case if PCB is defective.(b) When reconnecting the MFP, be sure to follow the procedure shown below.Connect the AC power cord and interface cables to the MFP.Connect the earth wire to the earth terminal of the AC power source outlet.Connect the AC power cord insertion plug to the AC power source outlet.Set the MFP POWER to the ON “I” position.DisconnectConnect