Mita-Kyocera FS5900C Service Bulletin
FS-5900C Service Manual
1. Introduction
1.1 Specifications ..................................................................................................................................... 1
1.2 Options, Accessories and Supplies...................................................................................................... 5
1.3 Control Panel Overview ...................................................................................................................... 6
1.3.1 Message Display........................................................................................................................6
1.4 Rear Panel........................................................................................................................................... 8
1.4.1 Connectors................................................................................................................................. 8
1.4.2 Network card............................................................................................................................. 8
1.5 Parts Identification ............................................................................................................................. 9
1.5.1 Front side view.......................................................................................................................... 9
1.5.2 Rear side view ........................................................................................................................... 9
1.6 Component Layout........................................................................................................................... 10
1.7 Electrical Components......................................................................................................................11
1.8 Switches/Sensors Identification ........................................................................................................12
2. Installation , Setup, an d Repa cking
2.1 Installation Requirements................................................................................................................. 13
2.1.1 Environment............................................................................................................................ 13
2.1.2 Minimum Space Requirements ..............................................................................................13
2.2 Setup................................................................................................................................................ 14
2.2.1 Removing the Packing Material.............................................................................................14
2.2.2 Installing the Optional Paper Feeder....................................................................................14
2.2.3 Preparing the Imaging Unit ................................................................................................... 14
2.2.4 Installing the Toner Developers............................................................................................. 15
2.2.5 Adding Paper or Transparencies............................................................................................16
2.3 Installing RAM SIMMs (Option) ........................................................................................................16
2.4 Replacing the Fuser Unit...................................................................................................................17
2.5 Replacing the Imaging Unit..............................................................................................................18
2.6 Repacking.........................................................................................................................................21
3. Mode Selection
3.1 Navigating through the Menus ........................................................................................................29
3.1.1 Display Information.... ................................................................. ...... ....... ...... ....... ...... ....... .... 29
4. Mechanical Functions
4.1 Drive Mechanism/Image Process General Description.......................................................................30
4.2 Print Process.....................................................................................................................................32
4.2.1 Discharging and Charging...................................................................................................... 32
4.2.2 Laser Exposure and Scanning................................................................................................32
4.2.3 Developing...............................................................................................................................34
4.2.4 Toner Transfer to the Accumulator Belt................................................................................ 35
4.2.5 Paper Pickup ........................................................................................................................... 35
4.2.6 Toner Transfer to Paper.......................................................................................................... 36
4.2.7 Fusing and Exiting.................................................................................................................. 36
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Table of Contents
5. Removal and Replacement Procedures
5.1 Upper Rear, Lower Rear and Top Covers............................................................................................38
5.2 Left Side Cover and Multi-purpose Tray ............................................................................................38
5.3 Operation Panel Cover and Printer LCD Board..................................................................................39
5.4 Safety Interlock Switches and Toner Empty Sensor Board (T)............................................................40
5.5 Front Cover and Bottom Front Cover................................................................................................41
5.6 Front Right Side, Rear Right Side and Lower Right Side Covers.........................................................42
5.7 Left Side Cover..................................................................................................................................43
5.7.1 Left Side Cover Removal .........................................................................................................43
5.7.2 Left Side Cover Sub Assembly................................................................................................43
5.8 Printer Main Control Board, HSYNC Board and Network Relay Board...............................................44
5.8.1 Printer Main Board Removal..................................................................................................44
5.8.2 Printer Main Control Board Disassembly, HSYNC Board and Network Relay Board........44
5.9 Paper Feed Unit ................................................................................................................................45
5.9.1 Paper Feed Unit Removal .......................................................................................................45
5.9.2 Paper Feed Unit Board and MP Tray Paper Out/Registration Sensor Board......................45
5.9.3 Transfer Roller Clutch, Transfer Roller Holder, Cleaning Roller Holder and
Registration Roller...................................................................................................................46
5.9.4 MP Tray Retard Pad................................................................................................................48
5.9.5 MP Tray Motor, MP Tray Pickup Roller and MP Tray Pickup Roller Shaft.........................49
5.9.6 Pickup Roller, Pickup Roller Shaft Assembly and Paper Empty Sensor Arm .....................51
5.9.7 Paper Feed Roller and Paper Feed Unit Frame.....................................................................52
5.10 Toner Developer Selector/Paper-eject Unit.........................................................................................53
5.10.1 Toner Developer Selector/Paper-eject Unit Removal.............................................................53
5.10.2 Covers, Sensor Boards (Paper Ejection, Paper Exit, Paper T ray Full) and
Paper Ejection Roller.......................... ....... ...... ...... ................................................................. .54
5.10.3 Cam Motor Board, Toner Developer Movement Sensor Board and Toner Selector Cam....56
5.10.4 Joint Gear and Face Down Switch Back Solenoid.................................................................57
5.10.5 Switch Back Shaft, Switch Back Roller and Face Down Switch Gate..................................58
5.11 Engine Control Board Shield Cover...................................................................................................60
5.12 Laser Scanning Unit (LSU).................................................................................................................60
5.13 Power Supply Unit............................................................................................................................61
5.13.1 Power Supply Unit Removal ...................................................................................................61
5.13.2 Power Supply Unit Sub Assembly..........................................................................................61
5.14 Engine Control Board .......................................................................................................................62
5.15 Fuser/Toner Developer Fan Motor and Ozone Fan Motor..................................................................62
5.16 Main Motor, Paper Feed Motor and Left Side Cover Switch..............................................................63
5.17 Transfer Roller Bias Terminal, FTR Bias Terminal, Home Sensor Board and Fuser Joint Connector......63
5.18 IT Cleaning Solenoid Board and Toner Developer Drive Motor/Toner Developer Drive Unit ...............64
5.18.1 Removal (IT Cleaning Solenoid Board and Toner Developer Drive Motor/
Toner Developer Drive Unit)...................................................................................................64
5.18.2 Toner Developer Drive Unit Sub Assembly............................................................................65
5.19 Printer Main Control Board Holder, Printer Panel Relay Board and High Voltage Board ....................67
5.20 IT Belt Cleaning Drive Gears, Cleaning Clutch Shaft Assembly, Main Motor Bracket, Imaging Unit
Coupling Connector, Fuser Coupling Connector and Optional 2nd Feeder
Coupling Connector..........................................................................................................................68
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