Table Of Contents - Ricoh G035 Service Manual

OVERALL INFORMATION
1. OVERALL MACHINE INFORMATION ........................................ 1-1
1.1 SPECIFICATIONS .................................................................................... 1-1
1.1.1 PRINTER.......................................................................................... 1-1
1.1.2 NETWORK INTERFACE BOARD .................................................... 1-4
1.2 PAPER EXIT TRAY SELECTION ............................................................. 1-5
1.3 MACHINE CONFIGURATION................................................................... 1-6
1.3.1 SYSTEM COMPONENTS ................................................................ 1-6
1.3.2 INSTALLABLE OPTION TABLE....................................................... 1-7
1.4 MECHANICAL COMPONENT LAYOUT ................................................... 1-8
1.5 PAPER PATH............................................................................................ 1-9
1.6 ELECTRICAL COMPONENT DESCRIPTIONS ...................................... 1-10
1.7 DRIVE LAYOUT ...................................................................................... 1-13
1.8 PRINT PROCESS ................................................................................... 1-15
1.8.1 OVERVIEW .................................................................................... 1-15
1.9 BOARD STRUCTURE ............................................................................ 1-17
1.9.1 BLOCK DIAGRAM.......................................................................... 1-17
1.9.2 DESCRIPTIONS ............................................................................ 1-18
DETAILED DESCRIPTIONS
2. DETAILED SECTION DESCRIPTIONS ....................................... 2-1
2.1 PRINTER CONTROLLER ......................................................................... 2-1
2.1.1 HARDWARE OVERVIEW ................................................................ 2-1
2.1.2 IMAGE PRINTING............................................................................ 2-3
2.1.3 IMAGE DATA PROCESSING .......................................................... 2-4
2.1.4 FEATURES ...................................................................................... 2-5
2.1.5 HARD DISK...................................................................................... 2-8
2.1.6 PAPER OVERFLOW DETECTION .................................................. 2-9
2.2 LASER EXPOSURE................................................................................ 2-10
2.2.1 OVERVIEW .................................................................................... 2-10
2.2.2 OPTICAL PATH ............................................................................. 2-11
2.2.3 AUTO POWER CONTROL (APC).................................................. 2-12
2.2.4 DUAL BEAM WRITING .................................................................. 2-13
2.2.5 LASER BEAM PITCH CHANGE MECHANISM.............................. 2-14
2.2.6 LD SAFETY SWITCHES ................................................................ 2-15
2.3 PHOTOCONDUCTOR UNIT (PCU) ........................................................ 2-16
2.3.1 OVERVIEW .................................................................................... 2-16
2.3.2 DRIVE MECHANISM...................................................................... 2-17
2.4 DRUM CHARGE ..................................................................................... 2-18
2.4.1 OVERVIEW .................................................................................... 2-18
2.4.2 CHARGE ROLLER VOLTAGE CORRECTION.............................. 2-19
2.4.3 ID SENSOR PATTERN PRODUCTION TIMING ........................... 2-21
2.4.4 DRUM CHARGE ROLLER CLEANING.......................................... 2-21
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TABLE OF CONTENTS

i G035