CONTENTS1. CONFIGURATION ..................................................................................... 1 - 11.1 System Configuration ........................................................................ 1 - 11.2 Printer Configuration .......................................................................... 1 - 21.3 Optional Configuration ....................................................................... 1 - 31.4 Specification ...................................................................................... 1 - 51.5 Safety Standards ............................................................................... 1 - 71.5.1 Certification Label .................................................................................... 1 - 71.5.2 Warning Label ......................................................................................... 1 - 81.5.3 Warning/Caution Marking ........................................................................ 1 - 92. OPERATION DESCRIPTION .................................................................... 2 - 12.1 Control Board..................................................................................... 2 - 42.2 PS Board ........................................................................................... 2 - 62.3 RAM Board ........................................................................................ 2 - 72.4 Power Supply Board .......................................................................... 2 - 82.5 Electrophotographic Process ............................................................. 2 - 102.5.1 Electrophotographic Process Mechanism ............................................... 2 - 102.5.2 Electrophotographic Process .................................................................. 2 - 132.5.3 Process Operation Descriptions .............................................................. 2 - 162.6 Paper Jam Detection ......................................................................... 2 - 272.7 Cover Open ....................................................................................... 2 - 302.8 Toner Low Detection.......................................................................... 2 - 313. PARTS REPLACEMENT ........................................................................... 3 - 13.1 Precautions for Parts Replacement ................................................... 3 - 13.2 Parts Layout....................................................................................... 3 - 33.3 How to Change Parts......................................................................... 3 - 63.3.1 Upper Cover ............................................................................................ 3 - 73.3.2 Stacker .................................................................................................... 3 - 83.3.3 LED Head ................................................................................................ 3 - 93.3.4 Eject Roller Assy ..................................................................................... 3 - 103.3.5 Pulse Motor (Main) .................................................................................. 3 - 113.3.6 Pulse Motor (Registration) ....................................................................... 3 - 123.3.7 Lower Base Unit ...................................................................................... 3 - 133.3.8 Motor Assy .............................................................................................. 3 - 143.3.9 Hopping Roller Assy ................................................................................ 3 - 153.3.10 Stacker Cover Assy ................................................................................. 3 - 163.3.11 Registration Roller ................................................................................... 3 - 173.3.12 Transfer Roller ......................................................................................... 3 - 183.3.13 Fusing Unit Assy ..................................................................................... 3 - 193.3.14 Back-up Roller ......................................................................................... 3 - 203.3.15 Sensor Plate (Inlet) .................................................................................. 3 - 213.3.16 Toner Sensor (Adhesion) ........................................................................ 3 - 223.3.17 Sensor Plate (Outlet) ............................................................................... 3 - 233.3.18 Manual Feed Guide Assy ........................................................................ 3 - 243.3.19 Sensor Plate (Paper Supply) ................................................................... 3 - 253.3.20 Main Control PCB .................................................................................... 3 - 263.3.21 Power Supply Board and Contact Assy .................................................. 3 - 27