Toshiba E-Studio 5540c - Page 18

e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C © 2011 - 2015 TOSHIBA TEC CORPORATION All rights reserved
CONTENTS
2
3.11 Paper Feeding System.................................................................................................... 3-69
3.11.1 General Descriptions ....................................................................................... 3-69
3.11.2 Composition..................................................................................................... 3-71
3.11.3 Functions ......................................................................................................... 3-72
3.11.4 Description of Operation .................................................................................. 3-74
3.12 Process Unit Related Section ......................................................................................... 3-80
3.12.1 General description.......................................................................................... 3-80
3.12.2 Composition..................................................................................................... 3-82
3.12.3 Functions ......................................................................................................... 3-83
3.12.4 Electric Circuit Description............................................................................... 3-87
3.13 Transfer unit .................................................................................................................... 3-88
3.13.1 General Descriptions ....................................................................................... 3-88
3.13.2 Composition..................................................................................................... 3-89
3.13.3 Self steering mechanism ................................................................................. 3-90
3.14 Image Quality Control ..................................................................................................... 3-91
3.14.1 General Description ......................................................................................... 3-91
3.15 Fuser Unit........................................................................................................................ 3-92
3.15.1 General Description ......................................................................................... 3-92
3.15.2 Composition..................................................................................................... 3-93
3.15.3 Electric Circuit Description............................................................................... 3-97
3.16 Exit / Reverse / Duplex Section..................................................................................... 3-106
3.16.1 General Description ....................................................................................... 3-106
3.16.2 Composition................................................................................................... 3-109
3.16.3 Description of Operations .............................................................................. 3-110
3.17 Reversing Automatic Document Feeder (RADF) .......................................................... 3-113
3.17.1 General Description ....................................................................................... 3-113
3.17.2 Functions ....................................................................................................... 3-114
3.17.3 Description of Operation ................................................................................ 3-115
3.18 Power Supply Unit......................................................................................................... 3-119
3.18.1 General Description ....................................................................................... 3-119
3.18.2 Composition................................................................................................... 3-119
3.18.3 Operation of DC Output Circuits .................................................................... 3-120
3.18.4 Output Channel.............................................................................................. 3-122
3.18.5 Fuse............................................................................................................... 3-124
4. DISASSEMBLY and REPLACEMENT ......................................................................... 4-1
4.1 Disassembly and Replacement of Covers ........................................................................ 4-1
4.1.1 Front lower cover ............................................................................................... 4-1
4.1.2 Front cover......................................................................................................... 4-1
4.1.3 Top right cover................................................................................................... 4-2
4.1.4 Right top cover................................................................................................... 4-2
4.1.5 Top front cover................................................................................................... 4-2
4.1.6 Top left cover ..................................................................................................... 4-3
4.1.7 FAX cover .......................................................................................................... 4-3
4.1.8 Receiving tray .................................................................................................... 4-3
4.1.9 Left middle cover ............................................................................................... 4-4
4.1.10 Left top cover ..................................................................................................... 4-4
4.1.11 Left lower cover ................................................................................................. 4-4
4.1.12 Bypass tray unit (Removing tray arm) ............................................................... 4-5
4.1.13 Duplexing unit front cover .................................................................................. 4-5
4.1.14 Duplexing unit rear cover................................................................................... 4-5
4.1.15 Paper feed cover ............................................................................................... 4-6
4.1.16 RADF connector cover ...................................................................................... 4-6
4.1.17 Right rear cover ................................................................................................. 4-6
4.1.18 Rear cover ......................................................................................................... 4-7
4.1.19 Upper exhaust fan cover.................................................................................... 4-7
4.1.20 Top rear cover ................................................................................................... 4-7
4.1.21 Left corner cover................................................................................................ 4-8
4.1.22 Right corner cover ............................................................................................. 4-8