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