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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c CONTENTS
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4. PREVENTIVE MAINTENANCE (PM)............................................................................ 4-1
4.1 PM Support Mode................................................................................................................4-1
4.1.1 General description .................................................................................................. 4-1
4.1.2 Operational flow and operational screen.................................................................. 4-1
4.1.3 Work flow of parts replacement................................................................................ 4-8
4.2 General Descriptions for PM Procedure.............................................................................. 4-9
4.3 Operational Items in Overhauling ...................................................................................... 4-10
4.4 Preventive Maintenance Checklist..................................................................................... 4-11
4.5 PM KIT............................................................................................................................... 4-28
4.6 Jig List ............................................................................................................................... 4-29
4.7 Grease List ........................................................................................................................ 4-30
4.8 Precautions for Storing and Handling Supplies ................................................................. 4-31
4.8.1 Precautions for storing TOSHIBA supplies ............................................................ 4-31
4.8.2 Checking and cleaning of photoconductive drum................................................... 4-31
4.8.3 Checking and cleaning of drum cleaning blade and transfer belt cleaning blade... 4-32
4.8.4 Handling of drum cleaner brush ............................................................................. 4-32
4.8.5 Handling of transfer belt ......................................................................................... 4-32
4.8.6 Checking and cleaning of fuser belt and pressure roller ........................................ 4-33
4.8.7 Checking and replacing the oil roller and cleaning roller........................................ 4-33
4.8.8 Checking and cleaning of discharge brush ............................................................ 4-34
5. TROUBLESHOOTING .................................................................................................. 5-1
5.1 Diagnosis and Prescription for Each Error Code................................................................. 5-1
5.1.1 Paper transport jam (paper exit section) .................................................................. 5-1
5.1.2 Paper misfeeding ..................................................................................................... 5-3
5.1.3 Paper transport jam................................................................................................ 5-10
5.1.4 Other paper jam ..................................................................................................... 5-18
5.1.5 Cover open jam ...................................................................................................... 5-20
5.1.6 RADF jam............................................................................................................... 5-24
5.1.7 Finisher jam............................................................................................................ 5-29
5.1.8 Drive system related service call............................................................................ 5-43
5.1.9 Paper feeding system related service call.............................................................. 5-44
5.1.10 Scanning system related service call ..................................................................... 5-50
5.1.11 Fuser unit related service call................................................................................. 5-51
5.1.12 Communication related service call........................................................................ 5-54
5.1.13 RADF related service call....................................................................................... 5-55
5.1.14 Circuit related service call ...................................................................................... 5-55
5.1.15 Laser optical unit related service call ..................................................................... 5-57
5.1.16 Finisher related service call.................................................................................... 5-58
5.1.17 Image control related service call........................................................................... 5-69
5.1.18 Copy process related service call........................................................................... 5-72
5.1.19 Toner density control related service call ............................................................... 5-76
5.1.20 Other service call.................................................................................................... 5-80
5.1.21 Error in Internet FAX / Scanning Function.............................................................. 5-81
5.2 Troubleshooting for the Image........................................................................................... 5-95
5.3 Replacement of PC Boards and HDD ............................................................................. 5-127
5.3.1 Replacing HDD..................................................................................................... 5-127
5.3.2 Replacing SYS board ........................................................................................... 5-129
5.3.3 Replacing SLG board ........................................................................................... 5-130
5.3.4 Replacing or clearing NVRAM.............................................................................. 5-130
5.3.5 Cautions when Data overwrite kit (GP-1060) is installed .................................... 5-131
5.3.6 HDD information display....................................................................................... 5-132
5.4 Other errors ..................................................................................................................... 5-134
6. FIRMWARE UPDATING ............................................................................................... 6-1
6.1 Firmware Updating with Download Jig ................................................................................ 6-2