122 JAN 2006Ver. 5.2DP-3510/3520/3530/4510/4520/4530/6010/6020/60303 Maintenance, Adjustments and Check Points3.1. Preventive MaintenancePreventive maintenance is performed at specific intervals and consists of machinecleaning and parts replacement.It is essential to perform these service activities properly and at the specified intervalsfor customer satisfaction.The purpose of this service is to maintain machine performance and image quality.- You should prepare the necessary PM kits, replacement parts, and tools forcleaning beforehand.- After completing the preventive maintenance service, you should discard theused parts and packaging, in accordance with local regulations and cleanthe surrounding area.- Before servicing the equipment disconnect the power cord from the wall outlet.- Before using solvents such as IPA (Isopropyl alcohol), put on rubber glovesand eye protection.1 Timing- Perform the preventive maintenance service in accordance with the chart ofpreventive maintenance areas listed in the service manual.2 Cleaning of Rollers- Rollers should be cleaned with water and cloth.- Use of IPA (Isopropyl alcohol) should be used sparingly.3 Precautions for Disassembly and AdjustmentTurn the Main Power Switch on the Back and the Power Switch on the LeftSide of the machine to the OFF position, and then unplug the AC PowerCord from the wall outlet before disassembling the machine.CAUTION!- After taking the unit apart, do not attempt to operate the machine.- When operating the machine with covers removed, be careful to avoid clothingbeing caught by moving components.- While electricity is applied, the connectors of any PC Board must not beconnected or disconnected.- Use of a vacuum cleaner for the cleaning of the TDC sensor could causeelectrostatic damage, therefore, use a blower brush or cotton swab for thecleaning of these parts. Before vacuuming the developer unit remove the TDCsensor.- When handling the drum, the precautions listed in section 3.3.should be followed.- Make sure to use the correct screw sizes.- Use toothed lock washers for the installation of ground wires to ensure electricalcontinuity.- To re-assemble, reverse the sequence of disassembly, unless otherwise specified.- Blown fuses should only be replaced with fuses of the same specified rating.
