B721dn/B731dn/MPS5501 Option
Contents
1. B 21dn B731dn MPS5501 Option Tray Maintenance Manual Copyright Information Copyright 2013 by Oki Data All Rights Reserved Disclaimer Every effort has been made to ensure that the information in this document is complete accurate and up to date The manufacturer assumes no responsibility for the results of errors beyond its control The manufacturer also cannot guarantee that changes in software and equipment made by other manufacturers and referred to in this guide will not affect the applicability of the information in it Mention of software products manufactured by other companies does not necessarily constitute endorsement by the manufacturer While all reasonable efforts have been made to make this document as accurate and helpful as possible we make no warranty of any kind expressed or implied as to the accuracy or completeness of the information contained herein The most up to date drivers and manuals are available from the web site http www okiprintingsolutions com Oki Data CONFIDENTIAL PREFACE PREFACE This manual explains the maintenance methods of OptionTray unit optionally In stalled in the B721dn B731dn ES7131 MPS4900b MPS5501b This manual is prepared for the maintenance person In regard to the handling methods of B721dn B731dn ES7131 MPS4900b MPS5501b please refer to the Users Manual Note The descriptions in this manual are subject to change without prior notice e While all2. reasonable efforts have been made to make this document as accurate and helpful as possible we make no warranty of any kind expressed or implied as to the accuracy of the information contained herein Oki Data assumes no responsibility to the damages caused or claimed to have been caused by the user as a result of repair adjust ment and or change using this manual e Parts of this product are delicate and can be damaged unless properly handled We strongly recommend the user to maintain the product at the hand of the registered maintenance person of our company e Before starting the maintenance work please neutralize the static elec tricity 45478901TH Rev 1 3 Oki Data CONFIDENTIAL REPLACEMENT OF PARTS This chapter describes the procedures of the field replacement of parts assemblies and units The procedures are to detach them Reverse the procedures to attach them The reference part numbers used in this manual such as and do not identical to the part numbers in the maintenance disassembly configuration diagram 45478901TL and RSPL 45478901TR for the manual 1 1 Notes on replacement of parts 5 1 2 Part replacement procedure s 7 Oki Data CONFIDENTIAL 1 1 Notes for Replacing of Parts 1 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
3. that may cause static electricity easily when handling IC and the circuit board such as microprocessor ROM and RAM 8 Do not put the PCB on the device and the floor directly 9 Do not work for a long time with the printer with the top cover open and an image drum unit installed in it Reconnecting 45478901TH Rev 1 5 Oki Data CONFIDENTIAL Maintenance Tools Table 1 1 1 shows the tools necessary to replace printed circuit boards and units Table 1 1 1 Maintenance Tools Maintenance Tool No 2 200 screwdriver with magnetic tip Remarks 8 to 5mm Screws Screws in use 1 REPLACEMENT OF PARTS Designation Screw silver Screwdriver No 3 100 Screw silver 8mm Digital multimater Pliers Screw black E ring pliers E shaped ring removal Screw shoulder 45478901TH Rev 1 6 Oki Data CONFIDENTIAL 1 2 Parts Replacement procedure 1 REPLACEMENT OF PARTS This Section contains the parts replacement for parts and assemblies 1 2 1 Board GOH 12 etc 1 Remove the Option Tray from the printer and remove the cassette from the Option Tray Unit 2 Remove the three screws silver and the two screws black and remove the Plate Joint Remove the four screws silver and remove the Plate Top Remove the two screws black and remove the Cover Front Remove the fo
4. to unplug the AC cord Turn off the printer then the LED indicator goes out Pull out the AC plug of the AC cord from the AC power source Unplug the AC cord and the interface cable 4 Warning There is a risk of electric shock during replacement of the low voltage power supply Use insulating gloves or avoid direct contact with any conducting part of the power supply and caution should be exercised during replacement The capacitor may take one minute to complete discharge after the AC cord is unplugged Also there is a possibility that the capacitor doesn t discharge because of a breakage of the PCB etc so remember the possibility of electric shock to avoid electric shock b Always use the following procedure to reconnect the printer Connect the AC cord and the interface cable to the printer Connect the AC power cord insertion plug to the AC power source outlet Turn on the printer then the LED indicator lights up Shutting off 2 Do not disassemble it if the printer works normally 3 Disassemble it as required Do not remove the part that is not shown in the replacement procedure 4 Please use the specified maintenance tool 5 Disassemble it according to the proper procedure It may cause damageto the parts if disassemble it without following the proper procedure 6 As the small parts such as the screws are lost easily please fix them to the original position temporarily 7 Do not use gloves
5. ur screws black 0 and remove the Hopping Assy N Remove the two screws shoulder 4 and remove the Connector 5 Remove the screw black 6 and remove the Switch ee RAR eee O Remove the two screws silver 2 and remove the Board GOH 12 Remove the two screws black 48 and remove the Connector 9 45478901TH Rev 1 Oki Data CONFIDENTIAL 1 REPLACEMENT OF PARTS 1 2 2 Paper Feed Roller 2 Remove the rollers while warping each latch In the hopping jam occures frequently to change the pickup roller and the separation roller feed roller pickup roller with gear without gear Note Change all rollers at once 1 Pull out the cassette after turning off the printer 3 Cassette 45478901TH Rev 1 8 Oki Data CONFIDENTIAL 1 REPLACEMENT OF PARTS 4 Set the new roller without gear to the shaft ONG _ i Note Check that the two rollers do not come off 5 Return the cassette to the main body 45478901TH Rev 1 9
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