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TABLE OF CONTENTS
1. OVERALL MACHINE INFORMATION ........................................ 1-1
1.1 SPECIFICATIONS .................................................................................... 1-1
1.1.1 GENERAL SPECIFICATIONS ......................................................... 1-1
1.1.2 SUPPORTED PAPER SIZES .......................................................... 1-3
1.2 SOFTWARE ACCESSORIES................................................................... 1-4
1.2.1 PRINTER DRIVERS ........................................................................ 1-4
1.2.2 UTILITY SOFTWARE ...................................................................... 1-4
1.2.3 SERVICE TOOLS ............................................................................ 1-4
1.3 MACHINE CONFIGURATION .................................................................. 1-5
1.3.1 SYSTEM COMPONENTS ............................................................... 1-5
1.4 PAPER PATH ........................................................................................... 1-7
1.5 MECHANICAL COMPONENT LAYOUT................................................... 1-8
1.6 ELECTRICAL COMPONENT DESCRIPTIONS........................................ 1-9
1.7 PRINTING PROCESS ............................................................................ 1-11
1.8 BOARD STRUCTURE ............................................................................ 1-13
1.8.1 OVERVIEW ................................................................................... 1-13
1.8.2 DESCRIPTIONS ............................................................................ 1-14
2. DETAILED SECTION DESCRIPTIONS....................................... 2-1
2.1 LASER EXPOSURE ................................................................................. 2-1
2.1.1 OVERVIEW ..................................................................................... 2-1
2.1.2 AUTO POWER CONTROL (APC) ................................................... 2-2
2.1.3 LD SAFETY SWITCH ...................................................................... 2-3
2.2 PHOTOCONDUCTOR UNIT (PCU).......................................................... 2-4
2.2.1 OVERVIEW ..................................................................................... 2-4
2.2.2 DRIVE MECHANISM ....................................................................... 2-5
2.2.3 NEW PCU DETECTION MECHANINSM ......................................... 2-6
2.3 DRUM CHARGE....................................................................................... 2-7
2.3.1 OVERVIEW ..................................................................................... 2-7
2.3.2 CHARGE ROLLER VOLTAGE CORRECTION ............................... 2-8
2.3.3 ID SENSOR PATTERN PRODUCTION TIMING ............................. 2-9
2.3.4 DRUM CHARGE ROLLER CLEANING ......................................... 2-10
2.4 DEVELOPMENT..................................................................................... 2-11
2.4.1 OVERVIEW ................................................................................... 2-11
2.4.2 DRIVE MECHANISM ..................................................................... 2-12
2.4.3 DEVELOPER MIXING ................................................................... 2-13
2.4.4 DEVELOPMENT BIAS................................................................... 2-14
2.4.5 TONER SUPPLY ........................................................................... 2-15
2.4.6 TONER DENSITY CONTROL ....................................................... 2-17
2.4.7 TONER NEAR END/END DETECTION AND RECOVERY ........... 2-21
2.5 DRUM CLEANING AND TONER RECYCLING...................................... 2-22
2.5.1 DRUM CLEANING......................................................................... 2-22
2.5.2 TONER RECYCLING .................................................................... 2-23
