Epson AcuLaser C8500 Service Manual

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SSSEEERRRVVVIIICCCEEE MMMAAANNNUUUAAALLL

Color Laser Page Printer

EPSON AcuLaser C8500

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Notice

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All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

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All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

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The contents of this manual are subject to change without notice.

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All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

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The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their

respective owners. EPSON disclaims any and all rights in those marks.

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PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.

DANGER

WARNING

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings.

Signals a precaution which, if ignored, could result in damage to equipment.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/ RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

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About this manual

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CAUTIO N

NOTE

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the EPSON AcuLaser C8500. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration

This manual consists of six chapters and Appendix.

CHAPTER 1. PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3. DISASSEMBLY / ASSEMBLY AND ADJUSTMENT

Describes the step-by-step procedures for disassembling/assembling and adjusting the product.

CHAPTER 4. DIAGNOSTICS

Provides Epson-approved methods for diagnostics.

CHAPTER 5. TROUBLESHOOTING

Provides the step-by-step procedures for troubleshooting.

CHAPTER 6. MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.

APPENDIX

Provides the following additional information for

reference:

• Connector pin assignments

• Electric circuit boards components layout

• Exploded diagram

• Electrical circuit boards schematics

Symbols Used in this Manual

Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages.

Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.

CHECK

PO INT

May indicate an operating or maintenance procedure,

practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action.

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Abbreviation

ADC = Automatic Density Control AG = Analog Ground ASSY = Assembly AUX. = Auxiliary B/W = Black and White BCR = Bias Charge Roll Bk = Black BK = Black BTR = Bias Transfer Roll BUR = Back Up Roll C = Cyan CART. = Cartridge CCW = Counterclockwise CL. = Clutch CLN = Cleaning (or Cleaner) CLK = Clock CONT. = Controller CR = Charge Roll CRU = Customer Replaceable Unit CRUM = CRU Monitor CW = Clockwise DB = Developing Bias DEVE. = Developer DIAG. = Diagnostic dpi = dots per inch DTS = Detach Saw ELEC. = Electric EP = Electrophotography

FDR = Feeder FG = Frame Ground FRU = Field Replaceable Unit GND = Ground H/R = Heat Roll Hex = Hexadecimal HVPS = High Voltage Power Supply I/F = Interface IBT = Intermediate Belt Transfer ID = Image Density (or Identification) L = Left L/H = Left Hand L/P = Low Paper LD = Laser Diode LEF = Long Edge Feed LVPS = Low Voltage Power Supply M = Magenta MAG. = Magnetic MCU = Machine Control Unit MECH. = Mechanical MOT. = Motor MSI = Multi Sheet Inserter N/F = Normal Force N/P = No Paper NVM = Non Volatile Memory O/H = Option Hinge OHP = Overhead Projector (In this manual, OHP means OHP film)

OPC = Organic Photo Conductor P/H = Paper Handling P/R = Pressure Roll PCDC = Pixel Count Dispense Control Pixel = Picture Cell PPM = Prints Per Minute PV = Print Volume PWB = Printed Wiring Board R = Right R/H = Right Hand REGI. = Registration ROS = Raster Output Scanner RTN = Return SEF = Short Edge Feed SG = Signal Ground SNR = Sensor SOL. = Solenoid SOS = Start Of Scan SPI = Scans Per Inch SYNC. = Synchronous TC = Toner Concentration TEMP. = Temperature TR = Transfer TRANS. = Transport WDD = Wide Range Dynamic Damper XERO. = Xerographic Y = Yellow YMCBk = Yellow, Magenta, Cyan, Black

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Safety Information

To prevent accidents during a maintenance procedure, strictly observe the Warnings and Cautions. Do not do anything that is dangerous or not within the scope of this document. Do not do anything that is dangerous even if not specifically described in this manual. In addition to the descriptions below and those given in this manual, there are many situations and circumstances that are dangerous. Be aware of these when you are working with the printer.

Power Supply

Before starting any service procedure, switch off the printer power and unplug the power cord from the wall outlet. If you must service the printer when the power is applied, be aware of the potential for electrical shock and do all tasks by following the procedures in this manual.

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Do not touch any live part unless you are instructed to do so by a service procedure. The LVPS power supply switch/inlet part is live even when the power switch has been turned off. Do not touch any live part.

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Mechanical Components

Safety Components

If you service a driving assembly (e.g., gears), first turn off the power and unplug the power cord. Then manually rotate the assembly.

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Do not touch the driving part (e.g., gears) while the assembly (printer) is being driven.

The printer is equipped with safety components (e.g., interlock switches, fuses, thermostat) and safety switches for protecting users and service personnel from injury and the equipment from damage.

The printer has two interlock switches, two safety switches and two interlock connectors that serve as the main safety mechanism.

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Front Cover Switch R This switch is turned off when the Front Cover Assembly is opened. It cuts off the power supply (24VDC, 5VDC-LD) from the power supply unit to stop all operations and disconnects the output (5VDCLD) circuit from the power supply and stops the laser beam emission. This switch consists of the following two switches:

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A switch that cuts off the power supply (24VDC, 5VDC-LD) to the control circuits and related parts.

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A switch that directly cuts off the power supply circuit (5VDC-LD) to the laser beam output circuit.

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Front Cover Switch L This is a safety switch. This switch is turned off when the Front Cover Assembly is opened, causing the printer without control units to stop operating.

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Top Cover Switch This is an interlock switch that directly cuts off the power supply (5VDC-LD) circuit to the laser beam output circuit. This switch is turned off when the Top Cover Assembly is removed, cutting off the output (5VDC-LD) circuit from the power supply unit and stopping the laser beam emission.

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Exit Chute Switch This switch is a safety switch. This switch is turned off when the Exit Upper Assembly (the cover on the upper left side of the printer) is opened.

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P/J91 (Connector that connects the Main Harness Assembly and Registration Harness Assembly) This is an interlock connector that cuts off the power supply (24VDC, 5VDC-LD) to the control circuit and related parts. This connector is disconnected when the Main P/H Assembly (pullout type unit on the right side of the printer) is pulled out, cutting off the output (24VDC, 5VDC-LD) from the power supply and stopping the printer operation without control units.

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P/J71 (Connector that connects the Fuser Connector and Fuser Harness Assembly) This is an interlock connector that cuts off the power supply (24VDC, 5VDC-LD) to the control circuit and related parts. This connector is disconnected when the Fuser Assembly (pull-out type unit on the left side of the printer) is pulled out, cutting off the output (24VDC, 5VDC-LD) from the power supply and stopping the printer operation without control units.

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Laser Beam

The printer has two interlock switches: the Front Cover Switch R and the Top Cover Switch. The purpose of these switches is to turn off the laser beam emission if any of the printer covers have been opened; this protects the user or service personnel from exposure to the laser beam from the ROS Assembly.

NOTE: The laser beam has a narrower frequency band and more

coherent phases than any other light (sunlight, electric light). It has excellent monochromaticity and convergence. A thin laser beam reaches long distances. Because of its convergence characteristic, the laser beam converges into one point, causing high density and high temperature. A laser beam is harmful to the human body.

A laser beam may be emitted during a maintenance operation. Do not turn on these interlock switches simultaneously under any circumstances except in a normal operation.

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Do not expose yourself to the laser beam to prevent injury (blindness).

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Do not open the cover that has the laser beam warning label.

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If you disassemble or assemble the printer, turn off the power.

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If you need to work on the printer with power applied, strictly follow the instructions in this manual.

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If you have to activate the printer while pressing the Front Cover Switch R by hand or with a tool, remove the Top Cover. (Do not turn on these interlock switches simultaneously under any circumstances except in a normal operation.)

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Understand how the laser beam functions and take maximum precautions not to injure yourself or anyone around you.

NOTE: The laser beam in this printer is invisible.

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High Temperature Assembly

Parts

To prevent you from becoming injured or burned, do the following: Before working with a high temperature Assembly (e.g., Fuser Assembly), turn off the power, unplug the power cord and wait until it cools down.

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The high temperature Assembly is very hot immediately after any printer operations. Wait at least 40 minutes before you start working on the printer.

To prevent you from becoming injured, keep the following in mind:

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When handling heavy parts (including the printer itself), use good posture to protect your back whenever you lift, move or place parts.

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Be careful not to injure yourself with the sharp edges of the parts.

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Do not work with wet or oily hands-you may drop a part or injure yourself. Dry your hands first.

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When pulling out a part (including a harness), do not use too much force. Pull out the part carefully and slowly step by step.

Do not lift, move or place heavy parts in a body posture that is likely to cause injury to yourself or cause the part to drop.

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Consumables

Improper Printer Use

Some parts may cause a particulate explosion or fire if handled improperly. Do not handle these parts near fire or throw into a fire. Some materials (e.g., Developer or Fuser Oil) may cause bodily injury. Do not swallow or inhale these materials or allow them to come in contact with the eyes. Help to protect those around you and follow the prohibitions against swallowing or inhaling those materials. Be careful to protect the eyes at all times. Place a sheet inside or under the printer so that the floor or workbench is protected. If the Developer or Fuser Oil gets on your clothing, dry it with a cloth and wash with clean water.

NOTE: The printer has the following consumable parts:

• Drum Cartridge • Waste Toner Box

• Oil Roll Assembly • Toner Cartridge Y

• Toner Cartridge M • Toner Cartridge C

• Toner Cartridge Bk

Modifying, revising, tampering with the printer, especially to the safety mechanism, is strictly prohibited in all circumstances.

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Manual Contents

Chapter 1 Product Descriptions Chapter 2 Operating Principles Chapter 3 Disassembly and Assembly / Adjustment Chapter 4 Diagnostics Chapter 5 Troubleshooting Chapter 6 Maintenance Appendix

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Revision Status

Revision Date of Issue Description

A July 10th, 2000 First issue B July 18th, 2000 All revised parts are indicated with bold bars.

Chapter 1: Further information on 1.5.2“Support Mode” has been added. Chapter 5: A LCD/ warning message “Worn Fuser” has been added; In 5.1.4.4“Service-Call Error Messages”, FIPs are added to

the relating tables and some error messages are changed.

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EPSON AcuLaser C8500 Revision B

Chapter 1 PRODUCT DESCRIPTIONS

1.1 Features

1.2 Specifications

1.2.1 Basic Specifications ................................................................ 1-3

1.2.2 Paper Specifications .............................................................. 1-11

1.2.2.1 Paper Types ................................................................... 1-11

1.2.2.2 Paper Source Classification ........................................... 1-11

1.2.2.3 Printable Area ................................................................. 1-12

1.2.3 Reliability and Durability ........................................................ 1-14

1.2.4 Operating Environment ......................................................... 1-16

1.2.5 Environmental Conditions for Storage and Transportation and consumables) 1-17

1.2.6 Electrical Specifications ......................................................... 1-18

1.2.7 Process Specifications .......................................................... 1-19

1.2.8 Applicable Standards ............................................................ 1-19

1.2.9 Options and Consumable Products ....................................... 1-20

1.2.10 Regularly Replaced Parts .................................................... 1-22

1.2.11 Exterior View and Parts ....................................................... 1-23

1.2.12 Controller Specifications ...................................................... 1-26

1.2.13 Controller Configuration ...................................................... 1-27

1.3 Interface Specifications

1.3.1 Parallel Interface Specifications ............................................ 1-28

1.3.2 Ethernet Interface .................................................................. 1-30

1.3.3 Type B Interface .................................................................... 1-31

1.4 Control Panel

1.4.1 Appearance and Descriptions ............................................... 1-32

1.4.1.1 LED Description ............................................................. 1-34

1.4.2 Button Functions ................................................................... 1-34

1.5 Service Functions

1.5.1 Hex Dump Mode ................................................................... 1-36

1.5.2 Support Mode ........................................................................ 1-36

1.5.3 EEPROM Initialization ........................................................... 1-36

1.5.4 Panel Setting Value Initialization ........................................... 1-37

1.5.5 Formatting the Flash ROM Module ....................................... 1-37

1.5.6 Program ROM Update ........................................................... 1-37

1.5.7 ROM Module Copy ................................................................ 1-37

1.5.8 Maintenance Mode ................................................................ 1-37

1.5.9 Error Recovery Operation (CPU Reset) ................................ 1-37

1.6 Panel Setting

.................................................................................................... 1-2

.......................................................................................... 1-3

...................................................................... 1-28

......................................................................................... 1-32

................................................................................ 1-36

.......................................................................................... 1-38

1.6.1 Setting Methods .................................................................... 1-38

1.6.1.1 OneTouch mode ............................................................. 1-38

1.6.1.2 SelecType mode ............................................................ 1-39

1.6.2 SelecType Setting Menu List ................................................ 1-39

1.6.3 Details of Menus and Settings .............................................. 1-46

1.6.3.1 Printing Menu ................................................................. 1-46

1.6.3.2 Tray Menu ...................................................................... 1-46

1.6.3.3 Config Menu ................................................................... 1-47

1.6.3.4 Setup Menu .................................................................... 1-47

1.6.3.5 Support Menu ................................................................. 1-48

1.6.3.6 Toner Transfer Menu ...................................................... 1-48

1.6.3.7 Maintenance Menu ......................................................... 1-49

1.7 RAM Expansion

1.8 Dimensions

1.9 Engine Restrictions

..................................................................................... 1-51

............................................................................................. 1-51

.............................................................................. 1-52

Chapter 2 Operating Principles

2.1 Print Process

2.1.1 Print Process Overview ........................................................... 2-2

2.1.2 Total Print Process Schematic Diagram ................................. 2-3

2.1.3 Print Process Technical Explanation ....................................... 2-4

2.1.3.1 Electrification .................................................................... 2-4

2.1.3.2 Exposure .......................................................................... 2-5

2.1.3.3 Developing ....................................................................... 2-6

2.1.3.4 Primary Transfer (Drum --> Belt) ...................................... 2-8

2.1.3.5 Cleaning (Drum) ............................................................... 2-9

2.1.3.6 Repeat (Complete Toner Image Forming) ..................... 2-10

2.1.3.7 Secondary Transfer (Belt --> Paper) .............................. 2-11

2.1.3.8 Electrical Discharge ........................................................ 2-12

2.1.3.9 Cleaning (Belt) ................................................................ 2-13

2.1.3.10 Fixing ............................................................................ 2-13

2.2 Print Data Flow

2.2.1 Data Flow .............................................................................. 2-14

2.3 Drive Transmission Route

2.3.1 PROCESS DRIVE ASSY ...................................................... 2-15

2.3.2 FUSER MOTOR ASSY ......................................................... 2-15

2.3.3 P/H MOTOR ASSY ............................................................... 2-16

2.3.4 ROTARY MOTOR ASSY ...................................................... 2-16

............................................................................................ 2-2

....................................................................................... 2-14

.................................................................. 2-15

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EPSON AcuLaser C8500 Revision B

2.3.5 INV MOTOR ASSY (Option Duplex) ..................................... 2-17

2.3.6 Gear Layout ........................................................................... 2-18

2.3.6.1 Printer ............................................................................. 2-18

2.3.6.2 Option Duplex ................................................................. 2-19

2.4 Paper Feed

2.4.1 Paper Feed Path (When no options are installed) ................ 2-20

2.4.2 Paper Feed Path (Option Duplex) ......................................... 2-21

2.4.3 Paper Conveyance Path Layout ............................................ 2-22

2.5 Function of Main Working Parts

2.5.1 Paper Cassette ...................................................................... 2-23

2.5.2 Paper Feeder ........................................................................ 2-24

2.5.3 MSI/Paper Transportation I ................................................... 2-26

2.5.4 MSI/Paper Transportation II .................................................. 2-27

2.5.5 Xerographics I ....................................................................... 2-29

2.5.6 Xerographics II ...................................................................... 2-30

2.5.7 Development ......................................................................... 2-32

2.5.8 IBT I ....................................................................................... 2-34

2.5.9 IBT II ...................................................................................... 2-35

2.5.10 Fusing I ................................................................................ 2-37

2.5.11 Fusing II ............................................................................... 2-38

2.5.12 Paper Exit ............................................................................ 2-39

2.5.13 Drive .................................................................................... 2-40

2.5.14 Electrical .............................................................................. 2-42

2.5.15 Option Duplex ...................................................................... 2-44

2.6 Operation Mode

2.7 Control

2.7.1 Paper Size Control ................................................................ 2-49

2.7.2 Cassette 2/Cassette 3 paper size control .............................. 2-50

2.7.3 Paper Supply Unit Selection Control ..................................... 2-51

2.7.4 OHP Front/Back Detection Control ....................................... 2-51

2.7.5 ROS Control .......................................................................... 2-52

2.7.5.1 Scanner Motor Operation ............................................... 2-52

2.7.5.2 ROS Warm-Up ............................................................... 2-52

2.7.5.3 Quantity of Light Control ................................................. 2-52

2.7.6 Process Control ..................................................................... 2-53

2.7.6.1 Potential Control ............................................................. 2-53

2.7.6.2 Toner Concentration Control (PCDC) ............................. 2-54

2.7.6.3 Toner Concentration Control (ADC) ............................... 2-54

2.7.6.4 ADC Solenoid Operation ................................................ 2-55

............................................................................................. 2-20

....................................................... 2-23

.................................................................................... 2-48

..................................................................................................... 2-49

2.7.7 XERO. Control ...................................................................... 2-56

2.7.7.1 Operation when DRUM CARTRIDGE is Replaced ........ 2-56

2.7.7.2 DRUM CARTRIDGE Life Detection Control ................... 2-56

2.7.7.3 WASTE TONER BOX Full Detection Control ................. 2-57

2.7.8 DEVE. Control ....................................................................... 2-59

2.7.8.1 Home Position Detection Operation ............................... 2-59

2.7.8.2 Toner Cartridge Presence Detection Position ................ 2-60

2.7.8.3 Toner Cartridge New/Old Detection Position ................. 2-60

2.7.8.4 Developing Position ........................................................ 2-60

2.7.8.5 Detection Method Accompanying DEVE. Control .......... 2-61

2.7.9 IBT Control ............................................................................ 2-63

2.7.9.1 Primary Transfer (Drum --> Belt) .................................... 2-63

2.7.9.2 Secondary Transfer (Belt-->Paper) ................................ 2-64

2.7.9.3 Belt Cleaning .................................................................. 2-66

2.7.9.4 IBT-related life detection control ..................................... 2-67

2.7.10 Transfer Layout Control ...................................................... 2-68

2.7.11 FUSER Control ................................................................... 2-70

2.7.11.1 Fuser Control Method ................................................... 2-70

2.7.11.2 Control for WARM UP Mode ........................................ 2-70

2.7.11.3 READY / LIGHT SLEEP / DEEP SLEEP Modes Control 2-70

2.7.11.4 Control in PRINTING Mode .......................................... 2-70

2.7.11.5 FUSER skidding ........................................................... 2-71

2.7.11.6 Prevention of a FUSER NIP scar ................................. 2-71

2.7.11.7 MAIN FUSER ASSY Life Detection Control ................. 2-71

2.8 Controller Operating Principles

........................................................ 2-72

Chapter 3 Disassembly/Assembly/Adjustment

3.1 Overview

3.1.1 Precautions for Disassembly, Assembly and Adjustment ....... 3-2

3.1.1.1 Precaution for Handling the Lithium Battery ..................... 3-2

3.1.2 Tools ....................................................................................... 3-3

3.1.3 Items to Check after Assembly ............................................... 3-3

3.2 Disassembly/Assembly Procedures

3.2.1 Exterior View and Part Names ................................................ 3-5

3.2.2 Removing/Replacing the Consumables .................................. 3-6

3.2.3 Updating the Main Controller Program ROM .......................... 3-6

3.2.3.1 Updating the ROM using a standard parallel interface ..... 3-6

3.2.3.2 Updating by copying from the FLASH ROM module ........ 3-7

3.2.3.3 Formatting the FLASH ROM Module ............................... 3-8

.................................................................................................... 3-2

.................................................. 3-3

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EPSON AcuLaser C8500 Revision B

3.2.4 Updating the MCU PWB (Mechanical Controller) Firmware ... 3-9

3.2.5 Cover ..................................................................................... 3-10

3.2.5.1 FRONT COVER ASSY (PL1.1.1) Removal .................... 3-10

3.2.5.2 FRONT MID COVER (PL1.1.6) Removal ....................... 3-10

3.2.5.3 FRONT LOWER COVER (PL1.1.5) Removal ................ 3-11

3.2.5.4 TOP COVER ASSY (PL1.1.20) Removal ....................... 3-12

3.2.5.5 L/H INNER COVER ASSY (PL1.1.10) Removal ............ 3-13

3.2.5.6 IBT INNER COVER ASSY (PL1.1.14) Removal ............ 3-14

3.2.5.7 R/H INNER COVER ASSY (PL1.1.15) Removal ............ 3-15

3.2.5.8 REAR COVER ASSY (PL1.1.30) Removal .................... 3-16

3.2.5.9 FILTER ASSY (PL1.1.32) Removal ............................... 3-17

3.2.5.10 LEFT LOWER COVER (PL1.1.40) Removal ................ 3-17

3.2.5.11 RIGHT COVER ASSY (PL1.1.51) Removal ................. 3-18

3.2.5.12 OPERATION PANEL (PL1.1.60) Removal ................... 3-18

3.2.5.13 RIGHT LOWER COVER (PL1.1.50) Removal ............. 3-19

3.2.6 Paper Tray ............................................................................. 3-20

3.2.6.1 UNIVERSAL CASSETTE (PL2.1.1) Removal ................ 3-20

3.2.6.2 FRONT SNUBBER (PL2.1.9) Removal .......................... 3-21

3.2.6.3 END GUIDE (PL2.1.16), SECTOR GEAR (PL2.1.18) Removal 3-22

3.2.7 Paper Feeder ........................................................................ 3-24

3.2.7.1 TURN IN CHUTE (PL3.1.21) Removal ........................... 3-24

3.2.7.2 TURN ROLL ASSY (PL3.1.23) Removal ........................ 3-26

3.2.7.3 FEED ROLL (PL3.1.31) Removal .................................. 3-27

3.2.7.4 FEED SOLENOID (PL3.1.35) Removal ......................... 3-28

3.2.7.5 FEED ROLL ASSY (PL3.1.29) Removal ........................ 3-29

3.2.7.6 SIZE SWITCH ASSY (PL3.1.5) Removal ....................... 3-30

3.2.7.7 CASSETTE N/P SENSOR ASSY (PL3.1.30) Removal .. 3-31

3.2.7.8 LOW PAPER SENSOR (PL3.1.18) Removal ................. 3-32

3.2.7.9 TRAY NO PAPER SENSOR (PL3.1.9) Removal ........... 3-32

3.2.8 MSI/Paper Transportation ..................................................... 3-33

3.2.8.1 MSI/REGI HIGH ASSY (PL4.1.5) Removal .................... 3-33

3.2.8.2 MSI GUIDE SWITCH (PL4.1.18) Removal ..................... 3-33

3.2.8.3 MSI ASSY (PL4.1.6) Removal ....................................... 3-34

3.2.8.4 MSI BASE ASSY (PL4.1.20) Removal ........................... 3-35

3.2.8.5 MSI FEED ASSY (PL4.1.30) Removal ........................... 3-35

3.2.8.6 MAIN P/H FRAME ASSY (PL4.1.40) Removal .............. 3-36

3.2.8.7 BOTTOM PLATE SENSOR (PL4.2.10) Removal ........... 3-36

3.2.8.8 LIFT UP FRAME ASSY (PL4.2.20) Removal ................. 3-37

3.2.8.9 EMPTY SENSOR (PL4.3.5) Removal ............................ 3-37

3.2.8.10 PITCH SENSOR (PL4.3.6) Removal ........................... 3-38

3.2.8.11 MSI FEED FRAME ASSY (PL4.3.20) Removal ........... 3-38

3.2.8.12 LEVEL SENSOR (PL4.3.23) Removal ......................... 3-39

3.2.8.13 P/REGI ROLL ASSY (PL4.4.3) Removal ..................... 3-40

3.2.8.14 PRE REGI CLUTCH ASSY (PL4.4.49) Removal ......... 3-40

3.2.8.15 REGI CLUTCH ASSY (PL4.4.5) Removal ................... 3-41

3.2.8.16 REGI RUBBER ROLL ASSY (PL4.4.7) Removal ......... 3-42

3.2.8.17 REGI METAL ROLL (PL4.4.8) Removal ...................... 3-43

3.2.8.18 IBT REGI CHUTE (PL4.4.14) Removal ........................ 3-44

3.2.8.19 REGI SENSOR (PL4.4.24) Removal ........................... 3-45

3.2.8.20 OHP SENSOR (PL4.4.25) Removal ............................ 3-46

3.2.9 Xerographics ......................................................................... 3-47

3.2.9.1 DRUM CARTRIDGE (PL6.1.10) Removal ..................... 3-47

3.2.9.2 WASTE TONER BOX (PL6.1.12) Removal ................... 3-48

3.2.9.3 ROS ASSY (PL6.1.1) Removal ...................................... 3-49

3.2.9.4 ADC SENSOR ASSY (PL6.1.20) Removal .................... 3-50

3.2.9.5 XL RAIL ASSY (PL6.1.40) Removal .............................. 3-51

3.2.9.6 WASTE TONER SENSOR (PL6.1.42) Removal ............ 3-52

3.2.9.7 TONER BOX SENSOR (PL6.1.43) Removal ................. 3-52

3.2.9.8 ERASE LAMP ASSY (PL6.1.30) Removal ..................... 3-53

3.2.10 Development ....................................................................... 3-54

3.2.10.1 Toner Cartridge (PL7.1.1, PL7.1.2, PL7.1.3, PL7.1.4) Removal 3-54

3.2.10.2 DEVELOPER ASSY (PL7.1.10, PL7.1.20, PL7.1.30, PL7.1.40) Removal 3-55

3.2.10.3 ROTARY SENSOR (PL7.2.22) Removal ..................... 3-57

3.2.10.4 ROTARY FRAME ASSY (PL7.2.2) Removal ............... 3-58

3.2.10.5 CARTRIDGE SENSOR (PL7.2.26) Removal ............... 3-60

3.2.11 IBT ....................................................................................... 3-61

3.2.11.1 TENSION LEVER (PL8.1.21) Removal ........................ 3-61

3.2.11.2 TRANSFER HIGH ASSY (PL8.1.20) Removal ............ 3-62

3.2.11.3 BELT CLEANER ASSY (PL8.1.23) Removal ............... 3-63

3.2.11.4 2ND BTR ASSY (PL8.1.22) Removal .......................... 3-64

3.2.11.5 2ND BTR CAM ASSY (PL8.1.1) Removal ................... 3-65

3.2.11.6 AUGER HIGH ASSY (PL8.1.6) Removal ..................... 3-66

3.2.11.7 IBT BELT ASSY (PL8.2.2) Removal ............................ 3-67

3.2.11.8 TR0 SENSOR (PL8.2.33) Removal ............................. 3-69

3.2.11.9 BTR CAM CLUTCH (PL8.3.4) Removal ....................... 3-69

3.2.12 Fusing ................................................................................. 3-70

3.2.12.1 FUSER ASSY (PL9.1.1) Removal ................................ 3-70

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EPSON AcuLaser C8500 Revision B

3.2.12.2 MAIN FUSER ASSY (PL9.1.2) Removal ...................... 3-71

3.2.12.3 UPPER GUIDE ASSY (PL9.2.20) Removal ................. 3-72

3.2.12.4 FUSER UPPER ASSY (PL9.2.30) Removal ................ 3-73

3.2.12.5 H/R HEATER (PL9.2.37) Removal ............................... 3-74

3.2.12.6 P/R HEATER (PL9.2.38) Removal ............................... 3-75

3.2.12.7 LOWER GUIDE ASSY (PL9.2.13) Removal ................ 3-76

3.2.12.8 FUSER EXIT SENSOR-1 (PL9.2.3) Removal .............. 3-76

3.2.12.9 FUSER EXIT SENSOR-2 (PL9.2.4) Removal .............. 3-77

3.2.12.10 HEAT ROLL (PL9.2.25) Removal .............................. 3-78

3.2.12.11 PRESSURE ROLL (PL9.2.10) Removal .................... 3-79

3.2.12.12 TEMP. SENSOR ASSY (PL9.2.6) Removal ............... 3-80

3.2.12.13 EXCHANGE CHUTE (PL9.3.17) Removal ................. 3-81

3.2.12.14 EXCHANGE SOLENOID (PL9.3.22) Removal ........... 3-82

3.2.12.15 CLEANER CAM SOLENOID (PL9.4.24) Removal ..... 3-83

3.2.12.16 CLEANER CAM ASSY (PL9.4.25) Removal .............. 3-84

3.2.12.17 EXIT-1 ROLL ASSY (PL9.3.14) Removal .................. 3-85

3.2.12.18 FUSER IN SENSOR (PL9.4.4) Removal .................... 3-86

3.2.12.19 FUSER CHUTE FAN (PL9.4.10) Removal ................. 3-87

3.2.12.20 FUSER BAFFLE ASSY (PL9.2.41) Removal ............. 3-88

3.2.13 Paper Exit ............................................................................ 3-88

3.2.13.1 EXIT TRAY ASSY (PL10.1.10) Removal ..................... 3-89

3.2.13.2 EXIT UPPER ASSY (PL10.1.2) Removal ..................... 3-89

3.2.13.3 EXIT LOWER ASSY (PL10.1.1) Removal .................... 3-90

3.2.13.4 EXIT-2 ROLL ASSY (PL10.2.5) Removal .................... 3-90

3.2.13.5 EXIT-3 ROLL ASSY (PL10.2.6) Removal .................... 3-91

3.2.13.6 FUSER FAN-1 (PL10.2.15) Removal ........................... 3-91

3.2.13.7 TOP EXIT SENSOR (PL10.2.12) Removal .................. 3-92

3.2.13.8 EXIT CHUTE SWITCH (PL10.2.13) Removal .............. 3-92

3.2.14 Drive .................................................................................... 3-92

3.2.14.1 P/H DRIVE ASSY (PL11.1.1) Removal ........................ 3-93

3.2.14.2 FUSER DRIVE ASSY (PL11.1.2) Removal .................. 3-94

3.2.14.3 FUSER MOTOR ASSY (PL11.1.4) Removal ............... 3-95

3.2.14.4 P/H MOTOR ASSY (Pl11.1.5) Removal ....................... 3-95

3.2.14.5 DRIVE MOTOR PWB (PL11.1.6) Removal .................. 3-96

3.2.14.6 PROCESS DRIVE ASSY (PL11.1.10) Removal .......... 3-96

3.2.14.7 ROTARY MOTOR ASSY (PL11.1.20) Removal ........... 3-97

3.2.14.8 ROTARY MOTOR DRIVE PWB (PL11.1.21) Removal 3-97

3.2.14.9 DISPENSE CLUTCH ASSY (PL11.1.22) Removal ...... 3-98

3.2.14.10 DEVE. CLUTCH ASSY (PL11.1.23) Removal ............ 3-98

3.2.15 Frame .................................................................................. 3-99

3.2.15.1 DEVE. TIE PLATE (PL12.1.3) Removal ....................... 3-99

3.2.16 Electrical ............................................................................ 3-100

3.2.16.1 LVPS (PL13.1.1) Removal ......................................... 3-100

3.2.16.2 HVPS (PL13.1.2) Removal ......................................... 3-101

3.2.16.3 TOP COVER SWITCH (PL13.1.3) Removal .............. 3-102

3.2.16.4 DEVE. FAN (PL13.1.5) Removal ............................... 3-102

3.2.16.5 MCU PWB (PL13.2.1) Removal ................................. 3-103

3.2.16.6 FRONT COVER SWITCH R (PL13.2.3) Removal ..... 3-104

3.2.16.7 FRONT COVER SWITCH L (PL13.2.4) Removal ...... 3-105

3.2.16.8 ENVIRONMENT SENSOR (PL13.2.5) Removal ........ 3-106

3.2.17 Controller ........................................................................... 3-107

3.2.17.1 CONTROLLER PWB (PL14.1.10) Removal ............... 3-107

3.2.17.2 CONTROLLER FAN (PL14.1.2) Removal .................. 3-109

3.2.17.3 CONT. CHASSIS ASSY (PL14.1.1) Removal ............ 3-110

3.2.17.4 Lithium Battery Removal ............................................ 3-111

3.3 Adjustment

3.3.1 NIP Pressure of the MAIN FUSER ASSY ........................... 3-112

3.3.2 Development ....................................................................... 3-113

............................................................................................ 3-112

Chapter 4 Diagnostics

4.1 Diagnostics by the Diagnostic Commander

4.1.1 Overview ................................................................................. 4-2

4.1.2 Method of Printing Test Prints ................................................. 4-2

4.1.3 Test Print Patterns .................................................................. 4-4

4.2 Diagnostics Commander

4.2.1 Overview ................................................................................ 4-5

4.2.1.1 Configuration .................................................................... 4-5

4.2.1.2 Overview of the Diagnostic Commander .......................... 4-6

4.2.1.3 Overview of the DIAG. PWB ............................................ 4-6

4.2.2 Preparation .............................................................................. 4-7

4.2.2.1 Personal Computer .......................................................... 4-7

4.2.2.2 Installation of the Diagnostics Commander ...................... 4-7

4.2.2.3 Uninstalling the Diagnostics Commander ........................ 4-8

4.2.2.4 Connection of the diagnostics tools (MCU PWB) ............. 4-8

4.2.2.5 Connection of the diagnostics tools (Option Connector) .. 4-9

4.2.3 Commands / Statuses ............................................................. 4-9

4.2.3.1 Overview of Commands and Statuses ............................. 4-9

4.2.3.2 Data Format ................................................................... 4-10

4.2.3.3 Categories of Commands / Statuses .............................. 4-10

....................................................................... 4-5

.................................... 4-2

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EPSON AcuLaser C8500 Revision B

4.2.4 Operating the Diagnostics Commander ................................ 4-11

4.2.4.1 Starting Up the Diagnostics Commander ....................... 4-11

4.2.4.2 Communications Connection ......................................... 4-11

4.2.4.3 Log Display ..................................................................... 4-12

4.2.4.4 [Manual] Tab Operation .................................................. 4-13

4.2.4.5 [Auto] Tab Procedures ................................................... 4-15

4.2.5 Diagnostics Execution ........................................................... 4-22

4.2.5.1 Diagnostics Execution Procedures ................................. 4-22

4.2.5.2 Diagnostics Types .......................................................... 4-22

4.2.5.3 Test Print ........................................................................ 4-23

4.2.5.4 Digital Input Test ............................................................ 4-24

4.2.5.5 Digital Input Test Device Code ....................................... 4-24

4.2.5.6 Digital Output Test .......................................................... 4-30

4.2.5.7 Digital Output Test Device Code .................................... 4-31

4.2.5.8 Analog Input Test .......................................................... 4-40

4.2.5.9 Analog Input Test Device Code ...................................... 4-41

4.2.5.10 Analog Output Test ...................................................... 4-43

4.2.5.11 Analog Output Test Device Code ................................. 4-44

4.2.5.12 EEPROM Read ............................................................ 4-46

4.2.5.13 EEPROM Write ............................................................ 4-49

4.2.5.14 EEPROM Initialize ........................................................ 4-52

4.2.5.15 NVM List ....................................................................... 4-53

4.2.6 Count Accumulation Value Read/Write ................................. 4-67

4.2.6.1 Read ............................................................................... 4-68

4.2.6.2 Write .............................................................................. 4-69

4.2.7 Command/Status List ............................................................ 4-70

4.2.7.1 Paper, Media & Output Control ...................................... 4-70

4.2.7.2 Printing/Status Control ................................................... 4-74

4.2.7.3 Parameter Control .......................................................... 4-80

4.2.7.4 Diagnostics Control ....................................................... 4-83

4.2.8 Error / Status Code ................................................................ 4-84

Chapter 5 Troubleshooting

5.1 Overview

5.1.1 Troubleshooting Procedure ..................................................... 5-2

5.1.2 Preliminary Checks ................................................................. 5-2

5.1.3 1.3 Precautions When Performing Work ................................. 5-3

5.1.4 Self-Diagnostic Function by LCD Message ............................. 5-4

5.1.4.1 Status Message ................................................................ 5-7

5.1.4.2 Error Message .................................................................. 5-9

................................................................................................... 5-2

5.1.4.3 Warning Message .......................................................... 5-15

5.1.4.4 Service-Call Error Messages .......................................... 5-19

5.2 Level 1 FIP (Fault Isolation Procedure)

5.2.1 Precautions When Using FIP (Fault Isolation Procedure) ..... 5-21

5.2.2 FIP Entry Chart ..................................................................... 5-22

5.3 Level 2 FIP (Fault Isolation Procedure

5.4 Picture Image Trouble

5.4.1 Picture Image Troubleshooting Entry Chart ........................ 5-120

5.5 Picture Quality FIP

........................................................................ 5-120

.............................................................................. 5-120

........................................... 5-21

............................................ 5-80

Chapter 6 Maintenance

6.1 About On-Site Servicing

6.1.1 On-site Service Flow ............................................................... 6-3

6.1.2 Description of the On-site Service ........................................... 6-4

6.2 Maintenance Menu

6.2.1 Entry to the Maintenance Menu .............................................. 6-8

6.2.2 Engine Status Sheet ............................................................... 6-9

6.3 Consumable Replacement

6.3.1 TONER CARTRIDGE Replacement ..................................... 6-14

6.3.2 PHOTOCONDUCTOR UNIT Replacement ........................... 6-17

6.3.3 WASTE TONER BOX Replacement ..................................... 6-19

6.4 Regularly Replaced Parts Replacement

6.5 Main After-Sales Parts Replacement

6.6 Installation

............................................................................................... 6-21

........................................................................ 6-2

.................................................................................. 6-7

.................................................................. 6-13

......................................... 6-21

............................................... 6-21

Chapter 7 APPENDIX

7.1 Overview

7.2 Parts List and Exploded Diagrams

7.2.1 How to Use the Parts List and Exploded Diagrams ................ 7-2

7.2.2 Parts List Tables ..................................................................... 7-3

7.2.3 Exploded Diagrams ................................................................. 7-7

7.3 Wiring Diagrams

7.3.1 P/J Locations ......................................................................... 7-19

7.3.2 Plug and Jack (P/J) Location Tables ..................................... 7-23

7.4 Wiring Diagrams and Signal Information

7.4.1 Overall Wiring Connection Diagram ...................................... 7-28

.................................................................................................... 7-2

..................................................... 7-2

.................................................................................... 7-19

........................................ 7-28

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EPSON AcuLaser C8500 Revision B

7.4.2 Wiring and Signal Descriptions between Components ......... 7-30

7.4.2.1 Configuration .................................................................. 7-30

7.4.3 Notation on the Diagrams for the Wiring and Signal Descriptions be-

tween Components ............................................................................ 7-32

7.5 Component Layout

7.6 Circuit Diagrams

.............................................................................. 7-59

................................................................................... 7-61

Page 21

PRODUCT DESCRIPTIONS

CHAPTER

Page 22

EPSON AcuLaser C8500 Revision B



1.1 Features

The EPSON AcuLaser C8500 is a non-impact color page printer with a resolution of 600 dpi. It has mainly improved on the print speed; 6 ppm for color print (A4) and 26 ppm for monochrome print (A4). The main features of the printer are as follows:

ENGINE FEATURES

1. High speed print engine at a print speed of 6 ppm for color, and 26 ppm for B/W (when printing A4). Paper sizes of A5 to A3W are supported.

2. Duplex printing supported. The engine is capable of printing true 600 dpi high resolution in full color.

3. Higher quality printing is possible with high quality plain paper.

4. Capable of printing thick paper, coated paper and transparencies (exclusive transparencies).

5. Features easy maintenance as a color laser printer.

6. Standard paper feed includes 2 bins; MP tray (up to 150 sheets, A3W supported) and standard universal cassette (up to 250 sheets, A3 supported). Paper feeding of maximum 1400 sheets from 4 bins is possible with a optional lower cassette (Large Capacity Paper Unit, A3 supported) installed. Paper feeding of maximum 900 sheets from 3 bins is possible with the optional a optional lower paper cassette (500-Sheet Paper Cassette Unit, A3 supported) installed.

7. Standard paper output can output 250 sheets Face-down and 150 sheets Face-up.

2. Color technologies

3. EPSON RIP Station 5300 (On-board option for EPSON Color Copy

4. Equipped with 2 standard interfaces.

5. By expanding memory with RAM DIMMs, the following functions can be

6. Equipped with RTC (Real Time Clock). (For job management)

7. HDD (optional) can be installed.

SOFTWARE FEATURES

Standard RAM is 64 MB. By installing additional RAM (3 slots), the maximum memory size can be expanded to 768 MB. (Note: keep the standard RAM 64MB installed and use other two RAM slots if the memory needs to be expanded.)

Equipped with Enhanced ASIC (VIP1a).



Data compression has been incorporated into the hardware to achieve high speed processing.



Equipped with AcuLaser Color Halftoning, CRIT (Color RIT).

Station) supported.



IEEE 1284 compliant and ECP compatible parallel Interface



Ethernet interface (10Base-T/100Base-TX)

enhanced and speeded up.



Drawing area in AcuLaser Color Halftoning



Print Speed



Resolution

CONTROLLER FEATURES

1. Installed emulations



Standard : ESC/Page-Color mode

1. Newly designed High Speed Controller



A new 64-bit RISC CPU — R5000 - 266 MHz



64-bit high speed memory — SDRAM DIMM (The same RAM as in the EPSON EPL-C8200 can be used.)

B/W printing supported by ESC/Page Color (Automatic discrimination between color and B/W is speeded up)



Standard : LJ4, GL2, ESCP2, FX, I239X, ESC/Page (B/W) mode (fullcompatibility with Cardinal+)



Option : Adobe Postscript Level3 (Peacock-B /PostScript module)

PRODUCT DESCRIPTIONS Features 1-2

Page 23

EPSON AcuLaser C8500 Revision B



Option : Color Copy Unit (EPSON RIP Station 5300)

2. Through EJL, PJL and Printer MIB, the printer status and printer environment are monitored.

3. Remote panel function through a Web browser using EPSON Net Web Assist.

4. When flash DIMM is installed, ROM update function is available. (RCC supported)

1.2 Specifications

This section describes specifications for EPSON AcuLaser C8500.

1.2.1 Basic Specifications

Method

5. Engine controller ROM(Flash) update function available

6. HP LaserJet4000 installed, the compatible font with 80 Scalable font installed, NLSP font ROM installed, Euro Symbol supported.

7. Engine adjustment function enabled by DIAG mode.

8. When a HDD (option) is installed, Electronic sorting, I/F reception buffer expansion (only for Ethernet I/F) and font registration when PostScript3 mode can be equipped.

9. Job management functions (available only for the job received from Network I/F)

10. Transfer voltage adjustment function

11. The default value for Gamma is changed to 1.8.

Semi-conductive laser beam scanning and dry electrophotographic process

RESOLUTION

600 dpi

Print mode



B/W mode: Standard monochrome print mode that supports

the fastest speed.



Color mode: Color mode which uses the color toner of Y, M, C,

and BK.

SPEED MODE



Standard mode: Transports paper at the highest speed supported

by the printer.



Half speed mode: In this mode, image on thick paper (over 105g/



Low speed mode: In this mode, paper is transported slowly to cause

), envelopes, and monochrome image on OHP

sheet are well fixed.

color image on OHP sheet to be fixed well.

PRINT SPEED

Figure 1-1. Exterior View of the EPSON AcuLaser C8500

See Table 1-1.

PRODUCT DESCRIPTIONS Specifications 1-3

Page 24

EPSON AcuLaser C8500 Revision B

First print

Table 1-1. Speed Mode



Face-up: B/W 10.9 seconds or less (LT/A4 LEF)

Color 25.9 seconds or less (LT/A4 LEF)



Face-down: B/W 13.9 seconds or less (LT/A4 LEF)

Color 28.9 seconds or less (LT/A4 LEF)

NOTE:

First print is defined as the duration taken after receiving the start command until outputting the first print. It is applicable when a feeder is selected in the standard mode. (Not applied during the process control operation.)

Print mode

Monochrom print mode

Standard mode

Speed

mode

Single sided print

Duplex print 20.2 PPM 19.8 PPM 11.0 PPM 10.8 PPM

LT/A4 LEF*1 (2UP*2)

Standard

tray/

cassette

26.1 PPM 24.8 PPM 13.8 PPM 13.5 PPM

Optional

paper

cassettes

B (LD)/A3 SEF

Standard

tray/

cassette

Optional

paper

cassettes

Half speed mode

Color print mode

Standard mode

Half speed mode

Low speed mode

*1: LEF, or Long Edge Feed, means the longer edge of the paper is the top toward

the paper feed direction.

*2: In this mode, the printer creates two print images on the IBT belt and the images

are transferred in sequence onto two sheets of paper. It is available for LT/A4 (LEF) or smaller.

*3: SEF, or Short Edge Feed, means the shorter edge of the paper is the top toward

the paper feed direction.

*4: 500-Sheet Paper Cassette Unit, Large Capacity Paper Unit

Single sided print

Duplex print 6.0 PPM 6.0 PPM 3.0 PPM 3.0 PPM

Single sided print

4.0 PPM - 2.0 PPM -

6.0 PPM 6.0 PPM 3.0 PPM 3.0 PPM

2.7 PPM - 1.3 PPM -

2.2 PPM - 1.2 PPM -

WARM-UP TIME

Within 300 seconds (at 22 °C, 55% Rh, rated voltage)

PAPER HANDLING



Standard MSI, Standard universal cassette

Table 1-2. Paper Handling - Standard Tray/Cassette

Paper feeder

Standard MSI (MP tray)

Standard universal cassette

*1 *2

Capacity

(sheet)

150

(16mm)

250

(26mm)

Available paper size

Min.: 90 x 139.7 mm Max.: 330.2 x 457.2 mm A3, A3W, A4, A5, B4, B5,

I-B5, LT, HLT, LG, EXE, GLG, GLT, B(LD), F4

90x139.7-330.2x457.2 Post card, OHP sheet,

Label. Thick paper

Custom size envelope Monarch, C10, DL, C6

B5, LT, A4, B4, A3, LG, B(LD), EXE

Available Paper

Thickness

64 -105g/m (Recommended

paper, Normal paper)

105- 220g/m2 Thick paper,

Special paper

64 -105g/m

*1: For the paper whose width is more than 304.8 mm (12 inch), side guide in

the MSI tray must be adjusted.

PRODUCT DESCRIPTIONS Specifications 1-4

Page 25

EPSON AcuLaser C8500 Revision B

*2: Paper Empty condition in the MSI tray is detected. *3: Note the following points when setting envelopes:

- Open flaps and set them facing to the tailing side.

- Set envelopes with the longer edges first. Length (excluding flap) must be shorter than width.

- The minimum length with a flap open must be 143mm.

- The minimum width must be 90mm



Option Cassette Unit

Table 1-3. Paper Handling - Option Cassette Unit

Paper Feeder

A3W Cassette

500-Sheet Paper Cassette Unit

Large Capacity Paper Unit

*1: Each cassette is equipped with the side guide and end guide (also used to

detect paper size). They are adjusted by the users.

*2: Each cassette is equipped with the paper out sensor and paper near empty

sensor. Paper near empty condition is defined as follows: 40 sheets +/- 30 sheets, FXL paper (64g/m2)

*1*2

Capacity

(sheet)

250 (26mm)

500 (53mm)

Available Paper

Size

A3W

B5, LT, A4, B4, A3, LG, B(LD), EXE

Available Paper

Thickness

64-105g/m2 (Recommended paper, Normal paper)

64-105g/m (Recommended paper, Normal paper)

(17 - 28lb)



Optional cassette usage and corresponding paper capacity

Table 1-4. Option Cassette Usage and Capacity

500-Sheet

Paper

Cassette

Unit

Large

Capacity

Paper Unit

1000

Sheets

1000

Sheets

MSI (MP

Tray)

150

Sheets

150

Sheets

150

Sheets

150

Sheets

*1: Use the A3W cassette by inserting it to the standard universal cassette slot. *2: Either 500-Sheet Paper Cassette Unit or Large Capacity Paper Unit is in-

stalled at the bottom.

*3: Applicable when recommended paper or normal paper is used.

Standard

Universal

Cassette

250 Sheets - 500 Sheets -

250 Sheets - -

- 250 Sheets 500 Sheets -

- 250 Sheets -

A3W

Cassette

DUPLEX PRINT



Minimum size: 182 mm/7.16” (W) x 210 mm/8.26” (L)



Maximum size: 304.8 mm/12” (W) x 457.2 mm/18” (L)



Paper wight: 64g/m2 - 105g/m2 (17 lb - 28lb)

Capacity

900

Sheets

1400

Sheets

900

Sheets

1400

Sheets

PRODUCT DESCRIPTIONS Specifications 1-5

Page 26

EPSON AcuLaser C8500 Revision B

PAPER SIZE



Normal paper: See Table 1-5.

Table 1-5. Paper Size/ 2- UP Mode Availability

A3W cassette

SEF Unavailable Unavailable

2UP mode

availability

Duplex print

availability

Paper Size

MSI

A3W 328 x 453mm SEF

Paper setting orientation

Standard Option

Universal

casette

−−

500-Sheet/

LCP Unit

A3 297 x 420mm SEF SEF SEF

A4 210 x 297mm LEF LEF LEF

A5 148 x 210mm LEF

− − −

B4 257 x 364mm SEF SEF SEF

B5 182 x 257mm LEF LEF LEF

I-B5 176 x 250 LEF

−−−

LT 8.5 x 11” (215.9 x 279.4mm) LEF LEF LEF

HLT 5.5 x 8.5” (139.7 x 215.9mm) LEF

−−−

LG 8.5 x l4” (215.9 x 355.6mm) SEF SEF SEF

EXE

GLG 8.5 x 13” (215.9 x 330.2mm) SEF

GLT 8 x 10.5”(203.2 x 266.7mm) LEF

7.25 x 10.5” (184.15 x 266.7mm)

LEF LEF LEF

− − −

−−−

B (LD) 11 x 17” (279.4 x 431.8mm) SEF SEF SEF

F4 210 x 330 SEF

−−−

−

Unavailable Available

Available Available

Available Unavailable

−

Unavailable Available

Available Available

Available Unavailable

−

Available Available

Available Unavailable

−

Unavailable Available

Available Available

Unavailable Available

Available Available

−

Unavailable Available

*1: LEF: Long Edge Feed, SEF: Short Edge Feed *2: 2UP is available only for paper size of LT(LEF) or smaller. For custom size paper, paper length along the loading direction must be 210 mm (8.5

inch) or shorter. As for envelopes, the total length with its flap opened must be 8.5 inch or shorter.

PRODUCT DESCRIPTIONS Specifications 1-6

Page 27

EPSON AcuLaser C8500 Revision B



Special paper: See Table 1-6

Table 1-6. Paper Size/2-UP Mode Availability

A3W

cassette

2UP mode

availability

Available Unavailable

Duplex print

availability

Paper Size

OHP Sheet

8.5 x 11” (210 x 297mm)

Paper setting orientation

Standard Option

MSI

LEF

Universal

cassette

−−−

500-Sheet/

LCP Unit

Post Card 100 x 148 mm SEF

MON

C10

DL 110 x 220 mm LEF

C6 114 x 162 LEF

*1: LEF: Long Edge Feed, SEF: Short Edge Feed *2: 2UP is available only for paper size of LT(LEF) or smaller. For custom size paper, paper length along the loading direction must be 210

mm (8.5 inch) or shorter. As for envelopes, the total length with its flap opened must be 8.5 inch or shorter.

*3: To feed envelope, open the flap and set it to the rear end.

37/8” x 71/2” (98.43 x 190.54 mm)

41/8 x 91/2 (104.78 x 241.3 mm)

LEF

Paper aligning

Single side aligning (front side) for all sizes (both standard tray (MSI) and each cassette)

Consumables



TONER CARTRIDGE (Black, Cyan, Magenta, Yellow)



DRUM CARTRIDGE (including one WASTE TONER BOX)



WASTE TONER BOX

− − −

−−−

− − −

−−−

− − −

Available Unavailable

REGULARLY REPLACED PARTS



MAIN FUSER ASSEMBLY (including an air filter)

PAPER OUTPUT



Face-down (FD): 250 sheets* (B5/EXE or larger, up to 105g/m



Face-up (FU): 150 sheets* (A4 or smaller) 50 sheets*

Applicable to the both single and duplex prints. (when recommended

paper is used)

(larger than A4)

(28lb))

PRODUCT DESCRIPTIONS Specifications 1-7

Page 28

EPSON AcuLaser C8500 Revision B

See Table 1-7 for FD output availability.

Table 1-7. Face-Down Output Availability

Paper Size FD Availability Paper Size FD Availability

A3W Available HLT Unavailable

A3 Available LG Available

A4 Available EXE Available

Normal paper

Special paper

NOTE:

1: The minimum paper size available for FD ejection is 182 mm in the paper feeding

direction x 210 mm vertical to the paper feeding direction.

2: “FU*” in the FD availability columns means face-up ejection for OHP, thick paper, and

envelope.

A5 Unavailable GLG Available

B4 Available GLT Available

B5 Available B(LD) Available

LT Available F4 Available

I-B5 Unavailable

OHP sheet FU* C10 FU*

Postcard FU* DL FU*

MON FU* C6 FU*

DIMENSIONS

Table 1-8. Dimensions

Description Dimension (W x D x H) mm

Printer

main body

Option

*1: Tolerance is +/- 1 mm. *2: When the standard tray (MSI) and Output tray (FU) are stored. *3: Printer dimensions with its optional units installed are given in Section

1.2.11 "Exterior View and Parts".

Standard condition

500-Sheet Paper Cassette Unit

Large Capacity Paper Unit 578 x 602 x 264

A3W Cassette 560 x 547 x 95

*2 *3

650 x 646 x 554

With foot:575 x 602 x 164 With casters:575 x 602 x 206

WEIGHT

Table 1-9. Weight

Description Weight (kg +/- 1% kg)

Printer

body

Standard Condition 71.2

Duplex Unit 8.2

With foot:13.3 With casters:14.0

NOTE:

500-Sheet Paper Cassette

Option

Unit

Large Capacity Paper Unit 21.2

A3W Cassette 2.7

Total weight after installing optional units is not a total sum of each unit since their installation involves some part removal.

PRODUCT DESCRIPTIONS Specifications 1-8

Page 29

EPSON AcuLaser C8500 Revision B

VOLTAGE



110/120V version: 110V/120V ± 10%, 50/60Hz ± 3Hz



220/240V version: 220V/240V ± 10%, 50/60Hz ± 3Hz

POWER CONSUMPTION



Operating (color)*1:



Average:500Wh or less



Maximum:[100V/120V version]1000W or less (Fuser is on)

[220/240V version]1050W or less (Fuser is on)



Operating (B/W)*1:



Average:650Wh or less



Maximum:[100V/120V version]1000W or less (Fuser is on)

[220/240V version]1050W or less (Fuser is on)



Standby mode:



Average230Wh or less



Maximum900W or less (Fuser is on)

100W or less (Fuser is off)



Energy save mode*2:

RATED CURRENT



100 V version: 11A or less (at rated voltage)



115V version: 10A or less (at rated voltage)



240V version: 5A or less (at rated voltage)

Product life



Printer (including the standard tray): Approximately 180,000* printed pages (450,000 images) on A4 LEF or five years, whichever comes first.

* Note one full color print is formed with four images. So the printer can

prints 180, 000 sheets (=450,000 images) if its job ration between the monochrome and color prints is 1:1. If the printer is used only for monochrome print, it can prints 450,000 sheets (= 450,000 images = 90,000 x 4 + 90000)



500-Sheet Paper Cassette Unit:180,000 sheets



Large Capacity Paper Unit:180,000 sheets



Duplex Unit: 180,000 sheets (each side of paper is counted as



A3W Cassette: 180,000 sheets

one sheet)



Average160Wh or less



Maximum900W or less (Fuser is on)

100W or less (Fuser is off)



Low power mode*3:



Average30Wh or less

*1: Including the optional cassette unit and duplex unit.

*2:Saves more energy than the standby mode. The required for warming up is shorter.

*3:Full pause status. Conforms to the Energy Star program.

Acoustic noise



Printer only



Operating:54.8dB (A) or less



Stand-by:38.3dB (A) or less



Energy Save mode:38.3dB (A) or less



Lower power mode:35.0dB (A) or less



With the Duplex Unit and Large Capacity Paper Unit installed



Operating:59.4dB (A) or less



Stand-by:38.3dB (A) or less

PRODUCT DESCRIPTIONS Specifications 1-9

Page 30

EPSON AcuLaser C8500 Revision B



Energy Save mode:38.3dB (A) or less



Lower power mode:35.0dB (A) or less

Ozone density

0.01 ppm (time waited average value) or less.

TOXICITY

Photo conductor, toner, carrier, plastic material have no effect on human body.

DUST EMISSION

Dust concentration is less than 0.1 mg / m

PRODUCT DESCRIPTIONS Specifications 1-10

Page 31

EPSON AcuLaser C8500 Revision B

1.2.2 Paper Specifications

1.2.2.1 Paper Types



Recommended paper: 4200 paper (B/W), EPSON high quality normal

paper (For color sigle-side ohly), EPSON coated paper,



Normal Paper: Normal copier paper, Recycled paper,



Special Paper: Exclusive OHP film, Postcard, Label, Color paper, Thick

NOTE 1:

NOTE 2:

lb: Ream Weight = lb/500sheets/17” x 22”

g/m

= 0.2659763 lb

Before purchasing a large amount of paper, try it out and check that it

is properly fed.

NOTE 3:

Avoid using the types of paper listed below to prevent abnormal

printing, paper jam, and printer malfunction.

• Carbon paper, non-carbon paper, thermal paper, impact paper, acidic paper

• Paper that has gone through a thermal or an ink-jet printer.

• Paper that is too thick or thin.

• Wet (damp) paper

• Paper to which a special coating has been applied, or colored paper that has gone through surface process.

• Paper that has been lubricated (too smooth or slippery).

• Paper whose texture is different on the front and back.

• Paper with holes for binders and perforations.

• Paper with irregular shape or not cut with right angles.

• Paper with labels that come off and stick easily.

• Paper with glue, staples, or paper clips attached.

• Special ink-jet paper (Super Fine Paper, glossy film, and so on.)

• OHP sheets for other color laser printers, monochrome printers, and photocopiers.

• Paper that has gone through other color laser printers, monochrome printers, and photocopiers.

• Pasted paper

64/m

- 105g/m2 (16lb - 28lb)

paper (105g/m

- 220g/m2), Envelope

1.2.2.2 Paper Source Classification

See Table 1-10.

NOTE:

Standard tray (MSI) RF P RF

Standard universal cassette

A3W Cassette (option) RF P N N N N N

500-Sheet Paper Cassette Unit Large Capacity Paper Unit

Duplex Unit*4

*1: 105 - 220g/m *2: MON, C10, DL, C6 *3: Exclusive OHP sheet only *4: Optional unit

: Reliable feeding and good image quality

: Possible, but limited to paper generally available

: Not supported

Table 1-10. Paper Usability for Each Paper Source

Special paper

paper

Paper source

Normal

Recommended

RF P N N N N N

RFPNNNNN

OHP sheet

PPPP

Labels

Postcard

Thick paper

Envelope

PRODUCT DESCRIPTIONS Specifications 1-11

Page 32

EPSON AcuLaser C8500 Revision B

        

          

1.2.2.3 Printable Area

MAXIMUM PRINTABLE AREA

320 mm (12.6”) x 457.2 mm (18”)

MAXIMUM GUARANTEED PRINT AREA

Area with a margin of 4 mm from each side.

Applied to paper size up to 297 mm (11.7”) in width and 444.5 mm (17.5”) in length.

4 mm

Guaranteed



print area

4 mm

Figure 1-2.

Guaranteed Print Area

4 mm

1) Standard Tray (MSI) / A3W Cassette

330.2 mm

5 mm

4 mm

4 mm 431.8 mm

320 mm

457.2 mm

297 mm

Guaranteed

print area

Paper Feed

Direction

Printable area

Side guide is moved to this position for paper whose



Paper width is 304.8 mm (12”) or shorter: From each edge



Paper width is longer than 304.8mm (12”)*: From the point with a margin of 5mm.

* For paper whose width is more than 304.8 mm (12”), the side guide in

the MSI must be moved. So print start position changes to 5 mm from the paper edge (a). This change also applies to A3W cassette. (See Figure 1-3.)

PRODUCT DESCRIPTIONS Specifications 1-12



Maximum paper size: 330.2 mm (W) x 457.2 mm (L)



Printable area: 320 mm (W) x 449.2 mm (L)



Guaranteed print area: 297 mm (W) x 431.8 mm (L)

Figure 1-3. Printable Area - Standard Tray, A3W Cassette

width is more than 304.8 mm. (12.6 mm outward)

Side guide is here for paper whose width is

304.8 mm or less

Page 33

EPSON AcuLaser C8500 Revision B

             

2) Standard Universal Cassette

4 m m

4 mm

457.2 mm

431.8 mm

        

304.8 mm

296.8 mm

Guaranteed

print area

4 mm

Paper Feed

Direction

3) 500-Sheet Paper Cassette Unit/Large Capacity Paper Unit

4 mm

431.8 mm

4 m m

423.8 mm

304.8 mm

296.8 mm

Guaranteed

print area

Paper Feed

Direction

Side guide is here for paper whose width is up to 304.8 mm



Maximum paper size: 304.8 mm (W) x 457.2 mm (L)



Printable area: 296.8 mm (W) x 449.2 mm (L)



Guaranteed print area: 296.8 mm (W) x 431.8 mm (L)



Maximum paper size: 304.8 mm (W) x 431.8 mm (L)



Printable area: 296.8 mm (W) x 423.8 mm (L)



Guaranteed print area: 296.8 mm (W) x 423.8 mm (L)

Side guide is here for paper whose width is up to 304.8 mm

Figure 1-4. Printable Area - Universal Cassette

500-Sheet Paper Cassette Unit/Large Capacity Paper Unit

Figure 1-5. Printable Area -

PRODUCT DESCRIPTIONS Specifications 1-13

Page 34

EPSON AcuLaser C8500 Revision B

1.2.3 Reliability and Durability

Table 1-12. Standard Universal Cassette

MPBF



Including the standard tray (MSI): 60,000 pages or more*



Including the standard tray and Duplex Unit: 60,000 pages or more*



Including the 500-Sheet Paper Cassette Unit: 60,000 pages or more*



Including the Large Capacity Paper Unit: 60,000 pages or more*

*: = 150,000 images evaluated based on the MPBF in condition that the job ratio of the

color and monochrome prints is 1: 1, since 1 page of color print is formed with 4 images.

Rate

Paper jam rate (single sided print)

Paper jam rate (Duplex print)

Multiple feeding rate 1/800 or less 1/500 or less 1/25 or less

Recommended

paper

1/3000 or less 1/2000 or less 1/25 or less

1/1800 or less 1/1200 or less -

Normal paper Special paper

Paper feed reliability

See the following tables.

NOTE:

Paper jam or multiple feeding that occurs to the top sheet of an additional paper stuck is ignored.

Table 1-11. Standard Paper Tray

Rate

Paper jam rate (single sided print)

Paper jam rate (Duplex print)

Multiple feeding rate 1/1000 or less 1/1000 or less 1/50

*1: Feeding reliability for envelopes is defined when printed on the front side

under a normal temperature only. (print on a back side is not guaranteed.) Envelopes that are adherent due to high temperature are excluded.

Recommended

paper

1/1000 or less 1/500 or less 1/100

1/600 or less 1/300 or less -

Normal paper Special paper

Table 1-13. Optional 500-Sheet Cassette

Rate

Paper jam rate (single sided print)

Paper jam rate (Duplex print)

Multiple feeding rate 1/5000 or less 1/3000 or less 1/25

Recommended

paper

1/5000 or less 1/3000 or less 1/25

1/3000 or less 1/1800 or less -

Normal paper Special paper

Table 1-14. A3W Cassette

Rate A3W Paper

Paper jam rate 1/2000

Multiple feeding rate 1/500

PRODUCT DESCRIPTIONS Specifications 1-14

Page 35

EPSON AcuLaser C8500 Revision B

        

PRINT POSITION ACCURACY



Main scan direction: Reference position (c) ± 2.5 mm



Sub scan direction: Reference position (a) ± 2.0 mm

See Figure 1-6.



Print AreaPrint Area

  

Figure 1-6. Print Position Accuracy

Paper Feed

Direction

MAINTAINABILITY



MTTR: Within 30 minutes (average) (95% is completed

within 50 minutes)

Curl height at ejection

Less than ± 15mm (Color printing with the image ratio of 5% in non- aligned condition, which varies depending on the image rate and aligning pattern.)

PAPER SKEW

See Figure 1-6 and Table 1-15.

Table 1-15. Paper Skew

Direction A4 (landscape) A3

Main scan direction

(|c-d|)

Sub scan direction

(|a-b|)

1.5mm (f=196mm)

2.0mm (e=271mm)

3.0mm (f=406mm)

2.0mm (f=271mm)

PRODUCT DESCRIPTIONS Specifications 1-15

Page 36

EPSON AcuLaser C8500 Revision B

1.2.4 Operating Environment

TEMPERATURE/HUMIDITY

Temperature: 10 to 32



Humidity: 15% to 85% RH (without condensation)



HEIGHT

3100m or less

LEVELNESS



Front - rear direction on the table:5 mm or less (within 644 mm)



Right - left direction on the table:10 mm or less (within 560 mm)

LUMINOSITY

3000 lx or less (not to be exposed to direct sunlight)

°°°°

SURROUNDING ENVIRONMENT

Be sure to leave enough space around the printer for proper printer use and operation. See Figure 1-7.

780 mm

Ventilation

150 mm

Ventilation

728 mm*

635 mm*

828 mm*

735 mm*

*1: With the Duplex Unit installed *2: Standard condition

590 mm

435 mm

835 mm

Figure 1-7. Space Requirement

PRODUCT DESCRIPTIONS Specifications 1-16

Page 37

EPSON AcuLaser C8500 Revision B



1.2.5 Environmental Conditions for Storage and

Transportation and consumables)

TEMPERATURE AND HUMIDITY

Drop height: Duplex Unit: 760 mm

500-Sheet Paper Cassette Unit: 760 mm Large Capacity Paper Unit: 760 mm A3W Cassette: 920 mm

Table 1-16. Temperature and Humidity

Condition Temperature Humidity

Normal condition 0 - 35

Extreme condition

*1: Without condensation

C 15 - 80%RH For 12 months

High: 35 - 40 °C Low: -20 - 0

High: 80 - 95%RH Low: 5 - 15%RH

Guaranty

1 month (Max.)

STORAGE AIR PRESSURE (ALTITUDE)

0 - 3100 meters (0 up to 15000m is possible during air shipping, but the air pressure in the cargo room must be 70.9275 KPa or more.)

DROP TEST



Printer main body



Free drop Height: [Bottom] 457 mm (18”)

[Other than bottom] 305 mm (12”)

Test times: [Bottom] Once

[Other than bottom] Once for each face

(total 5 faces)

Resistance to vibration



Frequency: 2 - 500 Hz



Acceleration: 12.6 m/s2 (on the vibration board) *



Direction: Three directions

X, Y: Vertical Z: Horizontal



Duration: 50 minutes

*: Overall rms value



Edge drop Height: 457 mm (18”)

Test times: Once for each edge (Total 4 edges)



Optional units



Test method: 1 corner, 3 edges, 6 surfaces

PRODUCT DESCRIPTIONS Specifications 1-17

Page 38

EPSON AcuLaser C8500 Revision B

1.2.6 Electrical Specifications

Specifications here are not applicable to any optional units.

AC line noise



Pulse width: 50 to 1000 ns



Pulse polarity: +/-



Repeat: Not synchronized



Modes: Common/normal



Voltage: 1kv (However, the parts can withstand up to

2kv without damage.)

Instant cutoff



DIP amount: 100% (at rated voltage -10% and rated

frequency -10%) for one cycle with normal print quality.

Electrostatic durability

No possibility of any error which affects on print quality under the following conditions.

Dielectric strength

There is no breakdown when the following voltages are applied for one minute.



100V/120V model:



AC 2000V (Between primary and secondary sides)



AC 1000V (Between primary side and chassis)



220V/240V model:



AC 2000V (Between primary and secondary sides)



AC 1500V (Between primary side and chassis)

Leakage current



100V version: 0.25 mA or less*



120V version: 3.5 mA or less*



220/240V version: 3.5 mA or less*

*: Condition:1.5K W , 0.15µ F (between frames and non-charged

metallic parts)



Atmospheric discharging:



Contact discharging:

8KV 6KV

Rush current

1/2 cycle, 100A or less, 10 msec or less

Insulation resistance

10M Ω or more

PRODUCT DESCRIPTIONS Specifications 1-18

Page 39

EPSON AcuLaser C8500 Revision B

1.2.7 Process Specifications



Printing method: Dry electrophotographic with 2 ingredients Using

the intermediate belt transfer system



Light source: Semi-conductive laser beam



Exposed object: OPC drum (organic photo conductor)



Charging method: Roller transfer system



Developing method: Exposed part developing system



Toner: Single-ingredient nonmagnetic toner with carrier



1st transfer: Intermediate belt transfer system



2nd transfer: Roller transfer system



Fusing: Heat roller system



Density adjustment: Automatic (can not be set by user)

1.2.8 Applicable Standards

SAFETY STANDARDS



100V/120V version: UL1950 3rd Edition

CSA C22.2 No. 950-M95



220V/240V version: IEC950 2nd Edition

EN60950 A3 by VDE with GS-mark

EMI



US: FCCPart15 SubpartB, ClassB(ANSI 63.4/11.4D)



Europe: EN55022(CISPR Pubilication22), ClassB

Also, the printer main body meets the following standards:

EN61000-3-2 (Hamonics) EN61000-3-3 (Flicker)

POWER SUPPLY HARMONIC

Meets the power supply harmonic control guide line.

CONSUMPTION CURRENT

Conforms to the International Energy Star Program (30W or less in the low power mode) (Conforms to 30W or less in the low voltage mode (International Energy Star Program Draft 3). Main body: 15W or less. Controller: 5V 2.5A 15W)

OTHERS



Toner: No effect on human health (OSHA, TSCA,

EINECS)



Carrier: No effect on human health



OPC: No effect on human health (OSHA)



SAFETY REGULATIONS (LASER RADIATION)



100V/120V version: FDA21CFR Chapter 1, Subchapter J, Section

1010, 1040



220V/240V version: IEC825 Class I Laser Product

NOTE:

Laser power:5mW (rated)

Wave length: 785nm +15/-15nm (at 25

Ozone: UL478 (5th edition)



Material: SWISS environmental law (must contain no Cds)

PRODUCT DESCRIPTIONS Specifications 1-19

Page 40

EPSON AcuLaser C8500 Revision B

1.2.9 Options and Consumable Products

The following tables list the options and consumable products for AcuLaser C8500.

NOTE:

The asterisk at the end of each product code is a substitute of the last digit of the product code, which varies by county.

Table 1-17. Options

Product Code Remarks

Large Capacity Paper Unit C813501*

Holds two 500-sheet paper cassettes

Toner Cartridge (Yellow) S050039

Toner Cartridge (Magenta) S050040

Toner Cartridge (Cyan) S050041

Toner Cartridge (Black) S050038

Waste Toner Collector (WASTE TONER BOX) S050020

Photoconductor unit (DRUM CARTRIDGE) S051073

Table 1-18. Consumable Products

Product Code

500-Sheet Paper Cassette Unit C813511*

250-Sheet Paper Cassette A3W C813521*

Duplex Unit C813531*

Hard Disk Drive C823771*

Adobe PostScript 3 Kit C832431*

EPSON RIP Station 5300 C850142*/850143*

Color Copy Station 8500

32KB Serial Interface Card C82307*

32KB Parallel Interface Card C83610*

Coax Interface Card C82314*

Twinax Interface Card C82315*

GPIB Interface Card C82313*

10 Base T/100 Base TX C82363*

10 Base 2/10 Base T C82362*

IEEE1394 C82372*

Holds one 500-sheet paper cassette

EPSON Color Laser Paper (A4) S041215

EPSON Color Laser Paper (A3) S041216

EPSON Color Laser Paper (A3W) S041217

EPSON Color Laser Paper (Letter) S041218

EPSON Color Laser Transparencies (A4) S041175

EPSON Color Laser Transparencies (Letter) S041174

EPSON Coated Paper (A4) S041383

EPSON Coated Paper (A3) S041384

PRODUCT DESCRIPTIONS Specifications 1-20

Page 41

EPSON AcuLaser C8500 Revision B

TONER CARTRIDGE SPECIFICATIONS

NOTE:



Toner cartridges for the AcuLaser C8500 and EPL-C8000/8200 are not compatible.

Toner Cartridge life See Table 1-19.

Table 1-19. Toner Cartridge Life

Item Life

Toner Cartridge (Black) 5,500 images

Toner Cartridge (Cyan) 6,000 images*

Toner Cartridge (Magenta) 6,000 images*

Toner Cartridge (Yellow) 6,000 images*

*1: Defined under the conditions that the image ratio is 5% on A4 (LEF)

paper during continuous printing, and different in color printing. Also, life varies depending on the image ratio and printer usage, weather continuous or intermittent.



Dimensions and weight



Unpacked Dimensions (W x H x D): 50 mm x 400 mm x 54.5 mm

Weight: K 0.371 kg

Y/M/C 0.370 kg



Packed Dimensions (W x H x D): 85 mm x 435 mm x 80 mm

Weight: K 0.474 kg

Y/M/C 0.473 kg

NOTE:



Tolerance for the dimension and weight is +/- 1%.

Environmental conditions for storage and transportation



Temperature/Humidity: See Table 1-20.

Table 1-20. Temperature/Humidity

Temperature Humidity

Normal condition

Extreme condition

*1: Without condensation *2: 12 months for unpacked cartridge under the used condition.



Storage air pressure (altitude)

C 15 - 80% RH 24 months

0 - 35

High: 35 - 45 °C

Low: -20 - 0

High: 80 - 95% Rh Low: 5 - 15% Rh

0 - 3,100m (0 up to 15,000 m is possible during air shipping, but the air pressure in the cargo room must be 70.9275KPa or more.)



Drop test (packed): Height: 91 cm

Test method: 1 corner, 3 edges, 6 surfaces



Resistance to vibration (packed): Frequency: 5 - 100 Hz

Acceleration: 6.9m/s

Direction: 3 directions (X, Y, Z) Duration: 50 minutes (single way) for each direction

PHOTOCONDUCTOR UNIT SPECIFICATIONS

NOTE:



Toner Photoconductor unit for the AcuLaser C8500 and EPLC8000/8200 are not compatible.

Formation: PHOTOCONDUCTOR

DRUM CLEANER

WASTE TONER BOX Life: Dimension and weight*



Unpacked

20,000 sheets*1 (The waste toner box has the same life)

Guaranty*21

1 month (Max.)

Dimension (W x D x H) : 213 mm x510 mm x 181 mm Weight: 2.4 kg

PRODUCT DESCRIPTIONS Specifications 1-21

Page 42

EPSON AcuLaser C8500 Revision B



Packed

1.2.10 Regularly Replaced Parts

Dimension (W x D x H) : 318 mm x 618 mm x 280 mm Weight: 3.5 kg



Environmental condition for storage and transportation

MAIN FUSER ASSEMBLY (including an air filter) 100,000 sheets

Same as for the toner cartridge

*1: Defined under the conditions that the image ratio is 5% on A4 (LEF) paper during

continuous printing, and different in color printing. Also, life varies depending on the image ratio and printer usage, weather continuous or intermittent printing.

*2: Tolerance for both dimension and weight is ± 1%

WASTE TONER BOX SPECIFICATIONS

NOTE:

Waste Toner Boxes for the AcuLaser C8500 and EPL-C8000/8200 are compatible.



Formation:



Life: 20,000 sheets*



Dimension and weight*



Unpacked

WASTE TONER BOX and others

Dimension (W x D x H) : 75.5 mm x 444 mm x 131 mm Wight: 0.45 kg



Packed Dimension (W x D x H) : 149 mm x 495 mm x 192 mm Weight: 0.87 kg



Environmental condition for storage and transportation: Same as for Toner Cartridge

*1:Defined under the conditions that the image ratio is 5% on A4 (LEF) printing at 4P/J.

Life varies depending on the image ratio and printer usage, weather continuous or intermittent printing.

*2:Tolerances for dimensions and weight are both ± 1%

PRODUCT DESCRIPTIONS Specifications 1-22

Page 43

EPSON AcuLaser C8500 Revision B

1.2.11 Exterior View and Parts

The table below lists the major exterior parts names. For the corresponding location, see the following figures. Note if any part names differ from the descriptions in the User’s Guide, they are shown in the brackets.

Table 1-21. Exterior View and Parts

Part name Part Name

a Control Panel s Ethernet I/F connector

Cover A / EXIT UPPER COVER

(Output path cover)

c STOPPER COVER (Stopper) u

d FRONT COVER v Paper cassette 2 / LC2 (Option)

e Face-Up Tray w Paper cassette 3 / LC3 (Option)

f Standard tray/MSI Tray/MP Tray x Cover E / FEEDER CHUTE ASSY

Standard Universal Cassette

(Standard lower cassette)

h RIGHT COVER z INVERTER ASSY

Unit C / MSI ASSY

(Paper path unit)

Mounting screw hole for EPSON

RIP Station 5300

FRONT MID COVER (Duplex unit slot cover)

y Unit B / DUP TRANSPORT ASSY

A Cover F / INVERTER ASSY

Table 1-21. Exterior View and Parts

Part name Part Name

Cover D/TURN CHUTE COVER

(Paper cassette cover)

q Filter Assy I 500-Sheet Paper Cassette Unit

Option slot cover (for EPSON RIP

Station 5300)

H Logo Plate

- -

j Parallel I/F Connector B Unit G / DUPLEX UNIT

k Ground screws C

l Interface card slot cover D INVERTER ASSY Connector

m Power switch E

n AC inlet F Connector

o Fuser unit/Unit B G Large Capacity Paper Unit

DUP TRANSPORT ASSY Connector

Large Capacity Paper Unit Connector

Figure 1-8. Exterior Parts - Top View

PRODUCT DESCRIPTIONS Specifications 1-23

Page 44

EPSON AcuLaser C8500 Revision B

Front View

Right View

Back View

Left View

Figure 1-9. Exterior Parts - Printer Main Body

PRODUCT DESCRIPTIONS Specifications 1-24

Page 45

EPSON AcuLaser C8500 Revision B

Front View

Right View

Left View

Back View

Figure 1-10. Exterior Parts - Options

PRODUCT DESCRIPTIONS Specifications 1-25

Page 46

EPSON AcuLaser C8500 Revision B

1.2.12 Controller Specifications

Front View

Right View

CPU

R5000 (266MHz)

ENHANCEMENT TECHNOLOGIES



AcuLaser Color Halftoning (B/W supported)



RIT, CRIT

RAM



SDRAM:



64-bit-wide DIMM (168-pin, 3.3V) Maximum: 768MB (when a 256MB ROM is installed instead of the standard RAM. With the standard RAM used, the maximum memory size is 576MB.)



3 RAM slots, including 1 for standard RAM



Standard: 64MB



Expansion: 32MB, 64MB, 128MB, 256MB

ROM

32-bit-wide



Program: 4MB (ROM DIMM)



Font: 4MB

EXPANSION ROM

3 slots (ROM DIMM slots)



Slots A, B: Font ROM module, PostSccipt3 module, EPSON

RIP Station 5300 module, CM table



Slot C: Exclusively used for NLSP Font ROM module

PRODUCT DESCRIPTIONS Specifications 1-26

Page 47

EPSON AcuLaser C8500 Revision B



PANEL

1-line 20-character LCD, 6 LEDs, 8 buttons

Optional: Postscript3 (PostScript3 module, Peacock-B)



Others: EJL mode, PJL mode, RCC mode, DIAG mode

SUPPLEMENTARY SOFTWARE:

INTERFACES



Status sheet



Standard:



Parallel 1ch

1EEE-1284-compliant bidirectional B-type connector Compatibility Nibble ECP



Ethernet 100Base/TX, 10Base/T 1ch

Optional:



Type-B - 1 slots (for level 3)



EPSON RIP Station 5300 interface - 1 slot (exclusive)



Network Status Sheet



Option I/F Status Sheet*



PS3 Status Sheet*



Font Sample (each mode)



Hex dump



Support mode



Maintenance mode (Engine Status Sheet, for engine)

*1:

Only when Type-B level 3 is installed.

*2:

Only when a PostScript3 module is installed.

RTC

Timer function (for job management)

HDD

1 (option)

PRINTER SETTINGS

Made through the panel setting mode, EJL commands, and MIB

PRINTER MODES



Standard: ESC/Page-Color, ESC/Page (B/W), LJ4 mode,

GL2 mode, ESCP2 mode, FX mode (B/W), 1239X mode (B/W)

INSTALLATION

Installed to the main printer body.

1.2.13 Controller Configuration

The controller board configuration of this printer can be set for the target market (destination) as indicated below. The settings are made at factory (by jumper resistor).



The factory default setting for the paper size (A4 or Letter)



For North and South America:Letter



For Europe, the Pacific / Russia, Taiwan, China and Korea: A4



The default paper size (EXE or B5) for paper cassette



For North and South America, Europe, and the Pacific/Russia : EXE



For Taiwan, China and Korea: B5

PRODUCT DESCRIPTIONS Specifications 1-27

Page 48

EPSON AcuLaser C8500 Revision B

1.3 Interface Specifications

The AcuLaser C8500 supports the following external interfaces.



Standard: 1. Parallel interface

2. Ethernet interface



Optional: Type-B host interfaces (1 slot)

By installing the I/F board for EPSON RIP Station 5300, EPSON RIP Station 5300 panel and scanner interface are equipped.

TypeB

(AUX)Interface

EPSON RIP Station 5300 Interface

Figure 1-11. Host Interface Slots

Parallel Interface (IEEE1284 B-Type)

LED: Link/ Receive Lamp

LED: 100Base/ 10Base Lamp

Ethernet Interface (100BaseTX/10BaseT

1.3.1 Parallel Interface Specifications

INTERFACE TYPE

IEEE 1284 High-Speed Bi-directional Parallel I/F

OPERATING MODES

Compatibility, Nibble, ECP

SYNCHRONIZATION

/STROBE pulse

CONNECTOR TYPE

57RE-40360-830B(D7A)DDK or equivalent

PLUG

Amphenol equivalent

DATA TRANSMISSION TIMING

Refer to Table 1-22 and Figure 1-12.

PIN ASSIGNMENT

Refer to Table 1-24.

PRODUCT DESCRIPTIONS Interface Specifications 1-28

Page 49

EPSON AcuLaser C8500 Revision B

Table 1-23. Centronics Parallel Interface Pin Assignment

Table 1-22. Data Transmission Timing

Min. Typ. Max

(1) Data hold setup 0.5 us

(2) Data hold 0.5 us

(3) Strobe pulse 0.5 us

(4) BUSY to STRBX 0 us

(5) STROB to BUSY 0.5 us

(6) BUSY to STRBX 0 us

(7) ACKX pulse width 0.5 us 1 us*

(8) ACKX to BUSY 0 s

(9) BUSY to PE or ERRX 2 ms*

(10) PE or ERRX to BUSY 2 ms*

(11) Power on to signal output valid 05 s

(12) PE or ERRX to ACKX 2 ms*

(13) STRBX to ACKX 0 s*

Pin # Signal Names I/O Descriptions

1STRBXI

Latch pulse used to read data. DATA is valid when the signal is LOW.

2-9 DATA 1-8 I DATA 8 is MSB and DATA 1 is LSB.

An acknowledge pulse to the host that indicates

10 ACKNLGX O

the data from the host computer has been received.

11 BUSY O

12 PE O

HIGH status indicates the printer is not ready to accept data.

Indicates paper empty status in paper tray or cassette selected.

13 SELOT O Always HIGH.

When the signal is LOW, the printer automatically feeds a line as “CR” is input. The “CR” is detected

14 AUTOX I

when the printer is turned on or the interface selection is switched from the optional I/F to parallel I/F.

15 NC - Not used.

16 GND - Ground level for the twisted pair return.

Connected to the printer chassis. The printer

DATA

STRBX

VALID

17 CG -

18 NC - Not used.

chassis GND and the signal GND are connected each other.

19-30 GND - Ground level for the twisted pair return.

BUSY

ACKX

31 INITX I

When the signal is LOW, the STRBX signal is ignored.

The signal is LOW when the printer is in the following condition:

Figure 1-12. Data Transmission Timing

32 ERRX O

1) User maintenance is required. 2) Service maintenance is required. 3) Another type of error has occurred. 4) The printer is off line.

33 GND - Ground level for the twisted pair return.

PRODUCT DESCRIPTIONS Interface Specifications 1-29

Page 50

EPSON AcuLaser C8500 Revision B

Table 1-23. Centronics Parallel Interface Pin Assignment

Pin # Signal Names I/O Descriptions

34 NC - Not used.

35 +5V - Pulled up to +5V through 1K Ω resistor.

36 SELINX I Always LOW.

DEVICE ID

✝✝✝✝

; MFG:EPSON; CMD:PJL,EJL,ESCPL2,ESCP9,PRPXL24-01,PCL,HPGL201,ESCPAGE-04,ESCPAGECOLOR-01**

MDL:**

✝✝✝✝

;

CLS:PRINTER;

DES:EPSON **

1: The hexadecimal value of the “total number of characters +2” of the

✝✝✝✝

;

device ID is entered.

†2: ”POSTSCRIPT” is added only when the PostScript 3 module is

installed. †3: Displays model name AL-C8500 †4: Manufacturer and model name are displayed EPSON AL-C8500

Note the MFG, MDL, DES, and CID can be defined by the users. The CID field, which does not reply at initialized device ID, only replies with a user-defined character string. The device ID at re-definition is as shown below. A “*****” represents a user-defined character string.

MFG:*****; CMD:PJL,EJL,ESCPL2,ESCP9,PRPXL24-01,PCL,HPGL201,ESCPAGE-CMD:PJL,EJL,ESCPL2,ESCP9,PRPXL2401,PCL,HPGL2-01,ESCPAGE-04,ESCPAGECOLOR-01** MDL:*****; CLS:PRINTER; DES:*****; CID:*****;

✝✝✝✝

;

✝✝✝✝

;

1.3.2 Ethernet Interface

INTERFACE TYPE

10BaseT, 100BaseTX, Half Duplex, Full Duplex (Switched at power on)

COMMUNICATION PROTOCOL

1. IPX/SPX (IPX, SPX, NCP, RIP, SAP, PrintServer, RemotePrinter, NDS, SNMP, ENPC)

2. NetBIOS (SMB) NetBEUI

3. TCP/IP (IP, UDP, TCP, LPR, FTP, TELNET, ARP, ICMP, RARP, BOOTP, DHCP, SNMP, HTTP, ENPC)

4. AppleTalk (ELAP, DDP, ATP, PAP, AARP, NBP, ZIP, RTMP, SNMP, ENPC)

CONNECTOR TYPE

RJ45

APPLICABLE CABLE

2-pair STP (10BaseT, 100BaseTX)

NOTE:

PIN CONFIGURATION

See Table 1-24.

Use a shielded cable (category 5) to meet FCC Class B, VCC class B.

PRODUCT DESCRIPTIONS Interface Specifications 1-30

Page 51

EPSON AcuLaser C8500 Revision B

1.3.3 Type B Interface

Table 1-24. Pin Configuration for the Ethernet I/F

Pin Signal Name I/O

1Tx+ O

2 Tx- O

3Rx+ I

4 N.C. -

This printer is equipped with a slot for Type B optional interface.

MAIN SYSTEM TYPE

MTP600dpi,PW7748dt600dpi,PRG(*****)rev.AP1300ma,SPD0fast,D4

∗ ∗ ∗ ∗ ∗

NOTE:

“

“ represents a ROM version.

5N.C. -

6 Rx- I

7N.C. -

8 N.C. -

ENTITY TYPE

See Section 1.3.3 "Type B Interface".

PRINTER NAME

Same as the product name when shipped from the factory.

PRODUCT NAME



Brand Name: AL-C8500



OEM Name: ESC/Page Printer

EMULATION TYPE/ENTITY TYPE

Table 1-25. Emulation Type/Entity Type

Emulation Emulation Type Entity Type

ESC/Page Color ESCPAGECOLOR-01 EPSONPAGECOLOR1

ESC/Page ESCPAGE-04

LJ4 PCL5E-00 EPSONPCL5

1239X PRPXL2-01 EPSONPRPXL24

GL2 HPGL24-01 EPSONHPGL2

POSTSCRIPT-00

LaserWriter

FX ESCP9 EPSONFX

ESCP2 ESCPL2 EPSONLQ2

*1: Added when a PostScript3 module is installed.

PRODUCT DESCRIPTIONS Interface Specifications 1-31

Page 52

EPSON AcuLaser C8500 Revision B



Emulation type



Emulation = AUTO

1) When PS is not started :AUTO (Emulation Types 1, 2, 3 . . .)

1.4 Control Panel

This section describes the control panel of this printer and its functions.





Entity Type



2) When PS is started : EJL (POSTSCRIPT-00, other Emulation Types 1, 2, 3 . . .)

Emulation = Fixed EJL (Default Emulation Type, other Emulation Types 1, 2, 3, . . .)

Emulation = AUTO See Table 1-25. Emulation = Fixed The Default Emulation Type and EPSONPAGECOLOR1 are returned.

Continue

(D) (E)

(A) (B)

On Line

(C)

Form Feed

(H) (I) (J) (K) (L) (M) (N) (O)

Reset

Figure 1-13. Control Panel Appearance

1.4.1 Appearance and Descriptions

The control panel of this printer consists of the LCD, 8 buttons, and 6 LEDs. See Figure 1-13 and Table 1-26 for the control panel appearance and its descriptions, respectively.

(F)

(G)

Paper Source Paper Size Manual Feed Orientation

SelecType

Alt

Paper Source Paper Size Manual Feed Orientation

RITech

Menu Item Value

Copies MP Tray Size

Toner Save

Mode

Enter

Table 1-26. LEDs and switches on the Control Panel

LED Button

Location Name Remarks Location Name Remarks

A LCD Panel

1 line, 20 characters (5 x 7 dot matrix)

H On Line button

B On Line LED Green I Form Feed button

C Data LED Yellow J Continue button

PRODUCT DESCRIPTIONS Control Panel 1-32

Page 53

EPSON AcuLaser C8500 Revision B

Table 1-26. LEDs and switches on the Control Panel

LED Button

Location Name Remarks Location Name Remarks

D Continue LED Red K SelecType/Alt button Also serves as the Shift button

E OneTouch Mode 2 LED L Menu Select button

F OneTouch Mode 1 LED M Item Select button

G SelecType Mode LED N Value Select button

- - O Enter button

PRODUCT DESCRIPTIONS Control Panel 1-33

Page 54

EPSON AcuLaser C8500 Revision B

1.4.1.1 LED Description

LCD (Liquid Crystal Display) (A)

One-line display for 20 characters (5 x 7 dot matrix) Normally displays printer status. In panel setting mode, LCD displays various setting values.

On Line LED (B)



On: The printer is on-line.



Off: The printer is a pause status.

Form Feed LED (C)



On: Unprinted data remains in the printer. However, the lamp is not

lit if the remaining data is not effective print data but other data such as control codes including commands.



Off: No effective print data remains in the printer. If control codes

are not terminated, the indicator lights up.



Blinking: The printer is processing data.

Continue LED (D)



Blinking: An error has occurred which can be cleared by pressing the

Continue button.

OneTouch Setting Mode 1 LED (E)

OneTouch Mode 2 LED (F)



On: OneTouch mode 2 is enabled. The following 4 items can be

set in this mode: “RITech”, “Copies”, “Mp Tray Size”, “Toner Save Mode”

SelecType Mode (G)



On: SelecType mode is enabled.

All LEDs



All LEDs come on when a service-call error has occurred.

1.4.2 Button Functions

On Line button (H)

When the printer is on-line, pressing this button puts the printer in off-line to prevent printing. Pressing this button during panel setting mode immediately terminates the setting mode and brings the printer back to on-line status.

Form Feed button (I)

If the Form Feed lamp is lit in off-line status, pressing this button causes the printer to print a page of data. If data for multiple pages has been received, it is printed. If the Form Feed LED is lit because the control codes are not terminated, data received up to that point is printed. The printer does not eject paper when the Form Feed LED is on.



On: OneTouch mode 1 is enabled. The following 4 items can be

set in this mode: “Paper Source”, “Paper Size”, “Manual Feed”, “Orientation”

Continue button (J)

While the Continue LED is on, pressing this button clears the error. Also, a warning message indicated during on-line status can be cleared by pressing this button.

PRODUCT DESCRIPTIONS Control Panel 1-34

Page 55

EPSON AcuLaser C8500 Revision B

SelecType button (K) (or Shift button)

Used to select OneTouch mode 1 / OneTouch mode 2 / SelecType mode, as follows:



The first push of the button puts the printer in OneTouch mode 1.



Pressing this button in the OneTouch mode 1 puts the printer in OneTouch mode 2.



Pressing this button in the OneTouch mode 2 activates the SelecType mode to enter the initial level of SelecType mode. (The “Test Menu” appears.)

Menu button (L)



Pressing this button activates the SelecType mode. The initial level of the mode (“Test Menu”) appears. In the SelecType mode, this button is used to select the setting menu, the primary level of the mode.



In OneTouch mode 1, used to select the value for “Paper Source”.



In OneTouch mode 2, used to select the item for “RITech”.



In SelecType mode, used to select the setting menu.

NOTE:

If this button is pressed with the Shift button held down, setting values and items scroll backward.

Value button (N)

Pressing this button enables the item that was last selected.



In OneTouch mode 1, used to select the value for “Manual Feed”.



In OneTouch mode 2, used to select the value for “MP Tray Size”.



In SelecType mode, used to select the value for the currently selected setting item. The next available value for the item is indicated.

NOTE:

If this button is pressed with the Shift button held down, setting values and items scroll backward.

Enter button (O)

Pressing this button generates “Status Sheet” in “Test Menu”.



In OneTouch mode 1, used to select the value for “Orientation”.



In OneTouch mode 2, used to select the value for “Toner Save Mode”.



In SelecType mode, the setting value is confirmed and printing or other functions are activated.

NOTE:

If this button is pressed with the Shift button held down, setting values and items scroll backward.

Item button (M)

Pressing this button brings up the item that was last selected.



In OneTouch mode 1, this button is used to select the value for “Paper Size”.



In OneTouch mode 2, this button is used to select the value for “Copies”.



In SelecType mode, this button is used to select the setting item.

NOTE:

If this button is pressed with the Shift button held down, setting values and items scroll backward.

Reset button (Continue button + Alt button) (K + J)

Pressing this button with the Alt button held down causes the printer to stop printing and reset. After the message “Reset” is indicated on the LCD, if the both buttons are kept pressed for more 5 seconds, “Reset All” is indicated and warm boot is performed.

PRODUCT DESCRIPTIONS Control Panel 1-35

Page 56

EPSON AcuLaser C8500 Revision B

1.5 Service Functions

Turning the printer on while pressing the specified button(s) until RAM check is completed provides several service functions. The service functions supported with this printer and corresponding activation methods are as listed below.

Table 1-27. Service Functions

Function Operating Method

Hex Dump

Support Mode

EEPROM Initialization

Panel Setting Value Initialization

Format Flash ROM Module

Program ROM Update

ROM Module Copy

Maintenance Mode

Engine program ROM update

CPU reset when a Service Call occurs.

Printing of the Error Sheet

Turn on the power while pressing the

Feed

button.

Turn on the power while pressing the button.

Turn on the power while pressing the

Continue

Turn on the power while pressing the

Continue

Turn on the power while pressing the

Item

Turn on the power while pressing the +

When a Service Call Error occurs, Press the

Alt

Following CPU Reset after a Service Call Error occurs, press the

Val u e

Alt

Value

Alt

Enter

Form Feed

Alt

Item

button.

buttons.

Val u e

Item

buttons.

Enter

buttons.

Continue

buttons.

Value

Enter

buttons.

button

Enter

2 times.

Form

Value

On Line

Alt

On Line

buttons.

1.5.1 Hex Dump Mode



Buttons: Form Feed + Power on



Functions: “Hex Dump” is indicated. Received data is converted into

hex ASCII. This is valid for all interfaces. The hex damp sheet contains the following information:



Dump list with the received data in hex ASCII format



Data list with 1-byte code characters (Unreadable

characters are expressed by *.*.)



Page number



Termination:Press “Reset” button to perform warm boot

or turn the printer off and back on.

1.5.2 Support Mode



Buttons: Value + Power on



Functions: Adds the support mode to the setting menu list. Once it is

added, the printer performs warm-boot, then the support mode can be selected and executed. The support mode enables servicers to set items, including HDD initialization, that are normally not set by the users.

NOTE:

By using the Support Mode, this printer can adjust the 2nd Bias Transfer Voltage at the user’s level. See 1.6.3.6 "Toner Transfer Menu" for detail.

1.5.3 EEPROM Initialization



Buttons: On Line + Continue + Menu + Power on



Functions: Clears the EEPROM to 00h and writes factory default

values. In this printer, however, the Fuser counter and Total pages are not cleared by this operation. Color pages is cleared. (Color Pages is stored in the controller. The fuser counter and Total Pages are stored on the engine side.)



Termination: After initializing, the printer performs warm boot and

returns to the normal states.

PRODUCT DESCRIPTIONS Service Functions 1-36

Page 57

EPSON AcuLaser C8500 Revision B

1.5.4 Panel Setting Value Initialization



Buttons: Continue + Power on



Functions: All panel settings for total environment and interface-

specific environment are reset to the factory defaults. Information such as accumulated printed pages to which users have no access is not initialized.



Termination: After initializing, the printer performs warm boot and

returns to the normal states.

1.5.5 Formatting the Flash ROM Module



Buttons: Alt + Item + Value + Enter + Power on



Functions: Clears the flash ROM module inserted in the slot A. It

starts as the message “DIMM A ERASING” appears.



Termination: After formatting the flash ROM module, the printer

performs warm boot and returns to the normal states.

1.5.6 Program ROM Update



Buttons: On Line + Alt + Value + Power on



Functions: Updates the DIMM inserted in the program socket.

1.5.7 ROM Module Copy



Buttons: On Line + Alt + Enter + Power on



Functions: Copies the contents of the ROM module in the socket B to

the flash ROM module in the socket A. If there is no module in the socket B, the contents of the ROM module in the code ROM socket is copied. As the indication “DIMM COPY MODE” appears, press the Enter button. The contents of the ROM is erased and copy process is carried out.



Termination: After copying, the printer performs warm boot and returns

to the normal states.

1.5.8 Maintenance Mode



Buttons: On Line + Form Feed + Continue + Power on



Functions: Adds the Maintenance menu to the setting menu. After

this operation, the printer automatically performs warm boot and the Maintenance menu is enabled. To eliminate this menu from the setting menus, turn the printer off and back on. Note that all engine-related Service-Call Errors (Service-Call Error e f f f) are ignored (No Service-Call Error occurs.) while the Maintenance menu is generated. (Same as for EJL) Note the following points in the Maintenance mode:



Interfaces are always open. (Disconnected)



Before entering the Maintenance mode to print an

engine status sheet, make sure no engine-related error is indicated in a normal mode (other than Maintenance mode).



In this mode, the printer only prints engine status sheet.

In case other printouts such as normal status sheet is needed, be sure to check that no engine related error is indicated in a normal mode (other than Maintenance mode), as described above.



Termination: Turn the printer off and back on.

1.5.9 Error Recovery Operation (CPU Reset)

By pressing the specified buttons, the following functions are activated.

a) CPU reset when E*** or C2000 Service call error is indicated



Buttons:Alt + Menu + Item + value + Enter



Functions:Returns the printer to the normal states without turning off

and back on the printer.

NOTE:

If the message “Printing SysErr?>” appears after this operation, an error sheet can be printed by pressing the Enter button. If any other button is pressed, the printer returns to the normal status without outputting an error sheet.

PRODUCT DESCRIPTIONS Service Functions 1-37

Page 58

EPSON AcuLaser C8500 Revision B

b) Display of error details when E*** or C2000 Service-call error is indicated

Step 1

:Press the Continue, Alt, and Menu buttons.

“ERR Y x x x x 0x********” (code and address) appears. - *1

Step 2

:Press any button.

“ERR TYPE 0x********” (error type) appears.

Step 3

:Press any button. The display returns to *1.

1.6 Panel Setting

This printer is equipped with the 2 types of panel setting functions; the OneTouch mode and SelecType mode. The OneTouch mode allow the users to get directly to the specific setting items in the SelecType mode. Therefore, this manual only lists the setting items for the SelecType mode.

OneTouch mode 1, 2

There are two OneTouch modes, OneTouch mode 1 and 2. This mode enables users to make selection by pressing a button in the panel design matrix.

SelecType mode

1.6.1 Setting Methods

1.6.1.1 OneTouch mode

NOTE:

1. Enter the OneTouch mode 1 or 2 by pressing the

2. Scroll the setting value list by pressing the

3. When the desired value is indicated, exit the OneTouch mode, and the

4. To return to the On Line status from the OneTouch mode, do one of the

OneTouch mode is effective when the printer is free from any error.

SelecType

current values for 4 items are shown on the LCD.)

*“

OneTouch buttons in this mode.

new value is stored.

following:



Press the



Perform panel setting initialization.



Run a status sheet.



Press the

”, “

Item

Value

”, “

On Line

SelecType

button.

” and “

button.

OneTouch

Enter

” buttons serve as the

button*.

button. (The

The SelecType mode has the following two levels.

1. Setting menu Panel setting items fall into numbers of categories called setting menus.

2. Setting item This is the lowest level of the panel setting mode. Some items have values to be selected and others are just executed directly.

PRODUCT DESCRIPTIONS Panel Setting 1-38

Page 59

EPSON AcuLaser C8500 Revision B

1.6.1.2 SelecType mode

NOTE:

1. To enter the SelecType mode:

2. To change the setting, follow the steps below.

3. To exit the SelecType mode, do one of the following:

SelecType mode is effective when the printer is free from any error.

Do one of the following:



Press the

SelecType

button to enter the SelecType mode through the

One touch mode 1 and 2.



Press the



Press the



Perform panel setting initialization.



Run a status sheet.



Press the

Menu , Item, Value

Step Button

1) Changing the setting menu

2) Changing the setting item

3) Changing the setting value

4) Changing the setting value

5) Enter the value (Executes the operation.) Enter

6) To the next setting Menu

*1: The trailing * means the current setting value. *2: Using the Alt button + Menu/Item/Value button, it is

possible to cycle through the lists backward.

On Line

SelecType

button.

, or

Enter

button.

Item

Value

1.6.2 SelecType Setting Menu List

This section contains the tables which list the SelecType setting menus. The factory defaults values are shown in Bold Italic style.

Test Menu

Item Value

Status Sheet Network Status Sheet AUX Status Sheet PS3 Status Sheet PS3 Font Sample ESC/Page Font Sample LJ4 Font Sample ESCP2 Font Sample FX Font Sample I239X Font Sample

Emulation Menu

Item Value

Parallel

Network

AUX

Printing Menu

Item Value

Paper Source

Page Size

Wide A4

*9, *14

*11

*13

*22

Auto

, LJ4, ESCP2, FX, I239X, PS3

Auto

, LJ4, ESCP2, FX, I239X, PS3

Auto

, LJ4, ESCP2, FX, I239X, PS3

Auto

, MP, LC1, LC2

, A3, A5, B5,

F4, MON, C10, DL, C6, IB5, CTM, A3W

Off

, On

, LC3

,B, HLT, LGL, GLT, GLG, EXE,

*11

, GL2

*11

, GL2

*11

, GL2

Orientation

Out Bin

Port,

Land

Face-down

, Face-Up

PRODUCT DESCRIPTIONS Panel Setting 1-39

Page 60

EPSON AcuLaser C8500 Revision B

Config Menu

Copies

Quantity

*23

Manual Feed

Resolution

Skip Blank Page

Auto Eject Page

Duplex

Binding

Start Page

∼

999

∼

999

Off

, On

600

, 300

Off

, On

Off

, On

Off

, On

Long Edge

Front

, Back

, Short Edge

Item Value

RITech

Toner Save

Top Offset -30.0 - 0.0 - 30.0 mm step 0.5 mm

Left Offset -30.0 - 0.0 - 30.0 mm step 0.5 mm

T Offset B

L Offset B

Size Ignore

Auto Cont

On,

Off

Off,

-30.0 -

Off,

0.0

- 30.0 mm step 0.5 mm

0.0

- 30.0 mm step 0.5 mm

Tray Menu

Auto

, On

Auto

, Off, On

Normal,

Enable

Thick, Trmsprnc, Coated

∼

300 step1

, Disable

English

Francais Deutsch ITALIANO ESPANOL SVENSKA Dansk Nederl. SUOMI Portugues

Off,

∗ ∗ ∗ ∗

∗

o o o F, E o o o o F

F, E

∗ ∗ ∗

o F, E ∗ ∗ o o F,

Item Value

MP Mode

MP Tray Size

Normal

F4, MON, C10, DL, C6, IB5, A3W

LC1 Size

*24

With a standard universal cassette mounted: A4, A3, B4, B5

With A3 W Cassette mounted: A3W

LC2 Size

LC3 Size

MP Type

LC1 Type

LC2 Type

LC3 Type

*5 ,*24

*6, *24

A4, A3, B4, B5

Plain

, Last

, A3, A5, B5, LT

, HLT, LGL, GLT, GLG, EXE,

, LT, LGL, B, EXE *4

, LT, LGL, B, EXE

, Letterhead, Recycled, Color, Trnsprncy, Labels

, Letterhead, Bond, Recycled, Color

, Letterhead, Recycled, Color

Page Protect

Image Optimum

Paper Type

Setup Menu

Item Value

Time Out 0, 5

Standby

Lang

Panel Lock

C Toner

*25

Lang Sprache LINGUA LENG

SPR Sprog Taal KIELI Ling

*24

*21

PRODUCT DESCRIPTIONS Panel Setting 1-40

Page 61

EPSON AcuLaser C8500 Revision B

M Toner

Y Toner

K Toner

*24

Photoconductor

Total Pages

Color Pages

B/W Pages

*24

∗ ∗ ∗ ∗

∗

o o o F, E o o o o F

∗ ∗ ∗ ∗

∗

o o o F, E o o o o F

∗ ∗ ∗ ∗

∗

o o o F, E o o o o F

F, E

∗ ∗ ∗

100% - 0%

0 ∼ 99999999

o F, E ∗ ∗ o o F,

SelcType lnit

Clock Menu

Item Value

LocalTimeDiff -13.59 - 0.00 - +13.59 step 0:01

Year 2000 - 2099 step1

Month 1 - 12 step1

Date 1 - 31 step1

Hour 0 - 23 step1

Minute 0 - 59 step1

Parallel Menu

Item Value

Parallel I/F

Speed

Bi-D Nibble,

Buffer Size

*26

, Off

Fast

, Normal

Normal,

ECP

, Off

Maximum, Minimum

Network Menu

Item Value

Network I/F On , Off

*15

*28

*15

Network Config

Get IPAddress

IP Byte 1

IP Byte 2

IP Byte 3

IP Byte 4

SM Byte 1

SM Byte 2

SM Byte 3

SM Byte 4

GW Byte 1

GW Byte 2

GW Byte 3

GW Byte 4

Buffer Size

AUX Menu

*8 *26

Item Value

AUX I/F

AUX Config

Get IPAddress

IP Byte 1

IP Byte 2

IP Byte 3

*9, *28

*9,*27, *15

, Yes

Auto

Panel,

192

168

192

168

255

- 255

255

Normal

, Off

, Yes

, PING

- 255

, Maximum, Minimum

Panel, Auto, PING

0 - 255

PRODUCT DESCRIPTIONS Panel Setting 1-41

Page 62

EPSON AcuLaser C8500 Revision B

LJ4 Menu

IP Byte 4

SM Byte 1

SM Byte 2

SM Byte 3

SM Byte 4

GW Byte 1

GW Byte 2

GW Byte 3

GW Byte 4

NetWare

AppleTalk

NetBEUI

AUX Init

†9,†27, †15

†9, †27, †15

†9, †15

Buffer Size

ESC/Page Menu

†22

Item Value

Auto CR

Auto FF

CR Function

LF Function

FF Function

Error Code

Avoid Error

PGI

TriColorSpace

0 - 255

On, Off

Normal

, Off

, CR+LF

CR+LF

CR+FF

Ignore

Off

, On

, Off

Normal

, Maximum, Minimum

, LF

, FF

, Space

, sRGB

Item Value

Font Source

Font Number

†18

Pitch

†18

Height

SymSet

Form 5 -

Source SymSet 0 -

Dest SymSet 0 -

CR Function

LF Function

Tray Assign 4, 4K, 5S

Resident

- available (Max 65535)

0.44 -

4.00 -

IBM-US

, Download

10.00

- 99.99 cpi step 0.01cpi

12.00

- 999.75 pt step 0.25 pt

, Roman-8, Roman-9, ECM94-1, 8859-2 ISO,

†16

, ROM A

†12

, ROM B

†12

8859-9 ISO, 8859-10ISO, 8859-15ISO, PcBlt775, IBM-DN, PcMultiling, PcE.Europe, PcTk437, PcEur858, Pc1004, WiAnsi, WiE.Europe, WiTurkish, WiBALT, DeskTop, PsText, VeInternati, VeUS, MsPublishin, Math-8, PsMath, VeMath,PiFont, Legal, UK, ANSI ASCII, Swedis2, Italian, Spanish, German,Norweg1, French2, Windows, McText, PcIcelandic PcEt850

PcTurk2 ISO

†30

, 8859-4 ISO WiLatvian BpAbicomp

†30

, WiGreek

ISO PcCy866

†30

8859-5 ISO

†30

,Hebrew8

ISO PcAr864

†30

8859-6 ISO

†2

277

- 3199

277

- 3199

, CR+LF

†30

, PcLt774

,PcCanFrench

†30

, Mazowia

†30

,PcGk437

, PcLt866

†30

,WiCyrillic

†30

, OCR A

†

- 128 Lines

†30

, WiBaltic

†30

, Europe3

†30

, PcHe862

†30

, PcTurk1

†30

, PcSl437

†30

,CodeMJK

†30

, PcGk851

†30

, PcCy855

, PcUkr866

†30

,Bulgarian

†30

, Arabic8

, OCR B

†30

,PcPortugues

†30

, PcNordic

, WiEstonian

†30

, BpBRASCII

†30

, PcGk869

†30

, PcLit771,

†30

, Hebrew7

†30

,8859-3

†30

,8859-7

†30

, 8859-8

CM Media Type

Off

, Opt1, Opt2

PRODUCT DESCRIPTIONS Panel Setting 1-42

Page 63

EPSON AcuLaser C8500 Revision B

GL2 Menu

Item Value

GLMode

Scale

Origin

Pen

End

Join

Pen0 0.05

Pen1 0.05 ∼

*17

Pen2

*17

Pen3

*17

Pen4

*17

Pen5

*17

Pen6

PS3 Menu

*11

Item Value

Error Sheet

Coloration

Image Protect

LJ4GL2

Off

Corner

Pen0

Pen6

Butt

Mitered

, Gllike

, A0, A1, A2, A3

, Center

, Pen1, Pen2

*17

, Square, Triangular, Round

, Miteredbeveled, Triangualr, Round, Beveled,

None

0.35

∼

∼ 5.00 mm step 0.05 mm

0.35

∼ 5.00 mm step 0.05 mm

0.35

0.05 ∼

0.05

0.05 ∼

Off

, On

Color

Off

, On

∼ 5.00 mm step 0.05 mm

0.35

∼

5.00 mm step 0.05 mm

0.35

∼ 5.00 mm step 0.05 mm

0.35

∼ 5.00 mm step 0.05 mm

0.35

∼ 5.00 mm step 0.05 mm

, Mono, TrueCol.

, Pen3

*17

, Pen4

*17

, Pen5

*17

ESCP2 Menu

Item Value

Font

Pitch

Condensed

T.Margin 0.40

Text 1

CGTable

Country

Auto CR

Auto LF

Bit Image

ZeroChar

FX Menu

Item Value

Font

Courier

, Prestige, Roman, Sans serif, Roman T, Orator

S, Sans H, Script, OCR A, OCR B

10 cpi,

Off,

PcUSA

12 cpi,15 cpi, Prop.

0.50

∼

1.50 inch step 0.05 inch

∼

available (Max:105) Lines

, Italic, PcMultilin, PcPortugue, PcCanFrenc, PcNordic, PcTurkish2, PcE.Europe, BpBRASCII, BpAbicomp, 8859-15ISO, PcEur858, PcSl437, PcTurkish1, Pclcelandic, 8859-9 ISO, Mazowia, CodeMJK, PcGk437, PcGK851, PcGk869, 8859-7 ISO, PcCy855, PcCy866, Bulgarian, PcUkr866, Hebrew7, Hebrew8, PcAr864, PcHe862

USA,

France, Germany, UK, Denmark, Sweden, Italy, Spain1, Japan, Norway, Denmark2, Spain2, LatinAmeric, Korea, Legal

, Off

Off,

Dark

, Light, Barcode

, 0

Courier

, Prestige, Roman, Sans serif, Script, Orator S,

OCR A, OCR B

Pitch

Condensed

T. Margin 0.40

Text 1

10 cpi

, 12 cpi,15 cpi, Prop.

Off

, On

0.50

∼

∼ 1.50 inch step 0.05 inch

∼

∼ 66*1 ∼ available (Max:105) Lines

PRODUCT DESCRIPTIONS Panel Setting 1-43

Page 64

EPSON AcuLaser C8500 Revision B

CGTable

Country

Auto CR

Auto LF

Bit Image

ZeroChar

1239X Menu

Item Value

Font

Pitch

Code Page

T. Margin 0.30

Text 1

Auto CR

Auto LF

Alt. Graphics

Bit Image

ZeroChar

Character Set

PcUSA

, Italic, PcMultilin, PcPortugue, PcCanFrenc, PcNordic, PcTurkish2, PcE.Europe, BpBRASCII, BpAbicomp, Roman-8, 8859-15ISO, PcEur858, ISO Latin1

USA,

France, Germany, UK, Denmark, Sweden, Italy, Spain1, Japan, Norway, Denmark2, Spain2, LatinAmeric

, Off

Off,

Dark

, Light, Barcode

, 0

Courier

, Prestige, Gothic, Orator, Script, Presentor,

Sans serif

10 cpi,

12cpi,15cpi, 17cpi, 20cpi, 24cpi, Prop.

437

, 850, 860, 863, 865

0.40

∼

∼ 1.50 inch step 0.05 inch

∼

Off

Off,

Dark

, 0

, On

, Light

∼

available (Max:105) Lines

Support Menu

*10 *19

Item Value

HDD Format

PS3 HDD Init

Maintenance Menu

†10

†10, †11

*20

Item Value

Engine Status Sheet

2nd BTR Clear

IBT Cleaner Clear

IBT Belt Cleaner

C Development Clear

M Development Clear

Y Development Clear

K Development Clear

Fuser Counter Clear

Total Counter Clear

Error Log Clear

*1: The factory default value for Europe, Pacific Rim/Russia, Taiwan, China and

Korea. *2: The factory default value for North/South America. *3: Displayed only in the models for Taiwan, China, and Korea. *4: Displayed only in the models for North/South America, Europe, and Pacific Rim/

Russia. *5: Displayed only when an optional paper cassette unit (500-Sheet Paper Cassette

Unit/ Large Capacity Paper Unit) is installed. *6: Displayed only when the Large Capacity Paper Unit is installed. *7: Displayed only when the Optional Duplex unit is installed. *8: Displayed only when the TypeB interface card is installed. *9: Displayed only when the TypeB Level3 is installed.

PRODUCT DESCRIPTIONS Panel Setting 1-44

Page 65

EPSON AcuLaser C8500 Revision B

*10: Displayed only when the optional HDD is installed. *11: Displayed only when the optional PostScript 3 module is installed. *12: Displayed only when the optional font module is installed to the optional ROM

DIMM socket. *13: Displayed only when Network Menu > Network Interface is set to On at start-up. *14: Displayed only when AUX Menu > AUX Interface is set to On at start-up. *15: Displayed only when “Network Config=Yes” or “AUX Config=Yes”. *16: Displayed only when a download font exists. *17: Displayed only when GLlike mode is selected. *18: Either is displayed, depending on the font type selected. “Height” is displayed

when a Proportional Spacing font is selected, and “Pitch” is displayed when a

Fixed Pitch font is selected. When a setting for Font Source and Font number is

changed, the both items are indicated until the LJ4 mode is next activated. *19: This setting menu is displayed only when the Support Mode has been activated

by the special service function at power-on. *20: This setting menu is displayed only when the Maintenance Mode has been

activated by the special service function at power-on. Always displayed in English

regardless of the Lang setting in the Setup Menu. *21: Not displayed in the panel and Status Sheet. It can be set in EJL. *22: Not displayed in the panel and Status Sheet. It can be set in EJL. It is not open to

users. *23: Not displayed in the panel and Status Sheet. It can be set in EJL or PJL. *24: This item is display-only and setting value cannot be changed. *25: STANDBYTIME command in EJL is also supported. The default value is 60

minutes. *26: When Interface setting is changed, printing on the status sheet for themselves

and status read-back with EJL are immediately reflected. However, it becomes

valid after warm-boot or at power on again. *27: The setting value depends on the Type-B Level3 I/F board setting. *28: This is automatically set to “No” after the printer status shifts to “On-line”. *29: Pre-printed paper can be used only in the MSI Tray and it cannot be fed from LC1/

2/3 because of the engine specification. *30: When LJ4 Menu > SymSet Value is changed to this Symbol set, Font Source =

Resident, Font Number = 0 setting is automatically made, and therefore in order

to print this symbol set, a font must be selected for which the Font Source and

Font Number Value are supported by this symbol set.

Setting items Setting value Initial value Setting method

Printer Name 32-byte character string AL-C8500

MFG of the Device ID 32-byte character string (Undefined) EJL

MDL of the Device ID 32-byte character string (Undefined) EJL

DES of the Device ID 32-byte character string (Undefined) EJL

CID of the Device ID 32-byte character string (Undefined) EJL

Table 1-28. User Setting Items

EJL, PrinterName command

Table shows the user setting items that are not included in the SelecType setting menu.

PRODUCT DESCRIPTIONS Panel Setting 1-45

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EPSON AcuLaser C8500 Revision B

1.6.3 Details of Menus and Settings

This section contains the AcuLaser C8500 specific information on the menus and settings.

1.6.3.1 Printing Menu

PAPER SOURCE

Selects the paper source when “Paper Type” = “Normal”.



Auto: Paper is fed from the paper source that holds the selected

paper type and size.



MP: Paper is fed from the MP tray.



LC1: Paper is fed from the 1st paper cassette.



LC2: Paper is fed from the 2nd paper cassette.



LC3: Paper is fed from the 3rd paper cassette.

Depending on the setting for Page Size or Paper Type, the available paper sources are restricted.

WIDE A4

QUANTITY

Number of copies can be set for collating. Since it has priority over the setting made for “Copies”, the value set for “ number of copies for “Quantity” is two or more. This setting is made only by the PJL, EJL, ESC/Page, or ESC/PageColor mode only. The setting value is not stored. If one-job data is too large, the printer indicates “Collate was disabled” and prints one copy.

Copies

” is ignored when the selected

MANUAL FEED

Determines whether or not to generate the message “Manual Feed xxx yyyy” before printing.



Off: Manual Feed is disabled.



On: Manual Feed is enabled. “Check Paper Size” error is not

generated regardless of the setting for “Size Ignore” for “Config Menu”. With “Manual Feed” on, the printer prints in 1UP mode only.

1.6.3.2 Tray Menu

MP TYPE

Effective only in the LJ4 mode.



Off: Printable area for graphics remains the ordinal size.



On: Printable area for graphics is expanded.

Specifies the type of the paper set in the MP tray.



Plain: Ordinal paper such as copy paper



Letterhead:Letter paper



Recycled: Recycled paper

OUT BIN



Color: Color paper

Selects the output tray.



Face-down: Ejects into face-down tray.



Face-up: Ejects into face-up tray.

Depending on the setting for Page Size or Paper Type, the available paper sources are restricted.



Trnsprncy: OHP sheet



Labels: Labels

When “Paper Size” = “Normal” and “Paper Source” = “Auto”, the printer refers to the values set for this item to search the paper sources that hold the selected paper type, and, of among, it selects the paper source that also matches the selected paper size.

PRODUCT DESCRIPTIONS Panel Setting 1-46

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EPSON AcuLaser C8500 Revision B

Depending on the setting for Page Size or Paper Type, the available paper sources are restricted.

NOTE:

Type of paper that is selected at paper source selection is only designated by the ESC/Page, ESC/Page-Color, or LJ4 command.

LC1 - 3 TYPE

Specifies the types of paper that are set in LC1 - LC3. Available setting values are “Plain”, “Letterhead”, “Recycled”, and “Color”. See “MP Type” above for details.

1.6.3.3 Config Menu

RITECH

Turns on/off the RITech function. For B/W printing, RITech works in the general way for monochrome page printers. For color printing, RITech is effective in the AcuLaser Color Halftoning mode by using CRIT function.

TONER SAVE

If this function is turned on for color printing, toner is saved by controlling halftoning level for lower density.

SIZE IGNORE

PAPER TYPE

Specifies the paper type, to which the printer refers to determine the printing speed and CM.

1.6.3.4 Setup Menu

C/M/Y/K TONER

Shows the remaining level of each toner in five steps. (Display only)

≥

E E E E E

NOTE:

The remaining level of each toner is evaluated based on the

100%

75%

50%

25%

Toner level = 0%

dispense time of each toner cartridge. According to the dispense time, which is stored on the engine side, the engine generates such an error as “Toner Out”.

PHOTOCONDUCTOR

This displays the remaining life of the Photoconductor Unit in %. (Display only)

100% (New) - 0% (end of the service life)

Toner level > 75%

≥

Toner level > 50%

≥

Toner level > 25%

≥

Toner level > 0%

Determines whether or not to ignore the messages “Paper Set aaaaa bbbbb” (error) and “Check Paper Size” (warning).



Off: The printer generates the above messages when detecting the

corresponding conditions.



On: The above mentioned messages are not shown. In this case,

make sure the image should not be larger than the page size.

TOTAL PAGES

Indicates the total number of sheets that the printer has printed on(Independence of paper size) (Display only). Once the counter reaches 99999999, it does not add any more. Note the printer shows the value counted on the engine side.

Value range: 0 to 99999999 (in sheet unit)

NOTE:

When this item is set to “on”, the printer prints in 1-UP mode.

PRODUCT DESCRIPTIONS Panel Setting 1-47

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EPSON AcuLaser C8500 Revision B

COLOR PAGES

Indicates the total number of color-printing sheets that the printer has printed. (Display only) Once the counter reaches 99999999, it does not add any more. Note the printer shows the value counted on the controller side.

Value range: 0 to 99999999 (in sheet unit)

B/W PAGES

Indicates the total number of B/W-printing sheets that the printer has printed. (Display only) Since the value is “Total Pages - Color Pages”, if the total pages exceeds 99999999, the correct value will not be indicated.

Value range: 0 to 99999999 (in sheet unit)

SELECTYPE INIT

Clears the panel setting values to the factory setting values. The following counters are not reset; page counter, C/M/Y/K toner counter, 2nd BTR counter, IBT Cleaner counter, Fuser Unit counter, the printer 1/printer 2 counters that are on the engine side, and the settings for “Parallel Menu”, “Network Menu”, and “AUX Menu”.

1.6.3.6 Toner Transfer Menu

The setting menue is displayed, and selection enabled, only when the Support Mode has been activated by hidden operation when the power is turned on. After that, if the power is turned off, then truned on again, the Toner Transfer Menu is delected form the Menu. (Support Mode deleted = the printer has switched to the normal mode.

NORMAL

Specify the Offset value of the 2nd BTR transfer voltage for the Plain Paper 1. This setting becomes valid after the power turned off and on again.

THICK

Specify the Offset value of the 2nd BTR transfer voltage for the Cover. This setting becomes valid after the power turned off and on again.

TRANSPARENCY

Specify the Offset value of the 2nd BTR transfer voltage for the Transparency. This setting becomes valid after the power turned off and on again.

1.6.3.5 Support Menu

The setting menue is displayed, and selection enabled , only when the Support Mode has been activated by hidden operation when the power is turned on. After that, if the power is turned off, then truned on again, the Support Menu is delected form the Menue. (Support Mode deleted = the printer has switched to the normal mode.

HDD FORMAT

HDD initialization is executed, HDD initialization takes much time and the initializtion progress is displayed as “HDD Format***%”(in each 1%). Roboot is ececuted after the initialization completes. Any interfaces cannot be connected at this time.

COATED

Specify the Offset value of the 2nd BTR transfer voltage for the Coated. This setting becomes valid after the power turned off and on again.

THICK NARROW

Specify the Offset value of the 2nd BTR transfer voltage for the Coated. This setting becomes valid after the power turned off and on again.

ENVELOPE

Specify the Offset value of the 2nd BTR transfer voltage for the Envelope. This setting becomes valid after the power turned off and on again.

PRODUCT DESCRIPTIONS Panel Setting 1-48

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EPSON AcuLaser C8500 Revision B

1.6.3.7 Maintenance Menu

This menu is indicated and selected only while the Maintenance Mode is activated by the service function at power-on. To eliminate this menu from the setting menu option, turn the printer off and then back on, and the printer returns to the normal mode. This menu is intended for servicers only.

CAUTIO N

ENGINE STATUS SHEET

Pressing the Enter button lets the printer print Engine Status Sheet. lf language data is still in the printer, the sheet will eject. Make sure the printer is free from any engine related service-call error in the normal mode (any mode other than the maintenance mode) before entering and executing the “Maintenance Menu”. Engine Status Sheet will be printed with RIT, toner-save, and resolution remained in the current settings; and all other set to their factory defaults. The user-default environment remains in effect after printing is completed. The indication on the LED blinks while printing is in progress. The printed sheet will show the count values of the counter on each unit in the engine. The Engine Status Sheet is always printed in English regardless of the Setup menu’s Lang setting.

Using this menu, you can reset several counters. When clearing any counter value, be sure to open the Front cover, check that the cover open error is indicated, and then close the cover. Otherwise, the reset operation is not effective. (This is due to engine specifications.)

IBT CLEANER CLEAR

Resets the IBT Cleaner counter. The maintenance engineer must reset this counter after replacing the IBT Cleaner with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

IBT BELT CLEANER

Resets the IBT Belt Cleaner counter. The maintenance engineer must reset this counter after replacing the IBT Belt Cleaner with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

C DEVELOPMENT CLEAR

Resets the C Development counter. The maintenance engineer must reset this counter after replacing the C Development with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

M DEVELOPMENT CLEAR

Resets the M Development counter. The maintenance engineer must reset this counter after replacing the M Development with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

2ND BTR CLEAR

Resets the 2nd BTR counter. The maintenance engineer must reset this counter after replacing the 2nd BTR with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

Y DEVELOPMENT CLEAR

Resets the Y Development counter. The maintenance engineer must reset this counter after replacing the Y Development with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

PRODUCT DESCRIPTIONS Panel Setting 1-49

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EPSON AcuLaser C8500 Revision B

K DEVELOPMENT CLEAR

Resets the K Development counter. The maintenance engineer must reset this counter after replacing the K Development with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

FUSER COUNTER CLEAR

Resets the Fuser Unit counter. The maintenance engineer must reset this counter after replacing the Fuser Unit with a new one. When the reset operation is done, the printer reboots. Then, be sure to open the Front Cover and close it to make the operation effective.

TOTAL COUNTER CLEAR

Resets the Total Pages to 0. (The engine’s printer 1 and printer 2 counters are reset .) This operation also clears “Color Pages”. When the reset operation is done, the printer reboots. Then, open the Front Cover and close it to make the operation effective.

ERROR LOG CLEAR

Clears Error Log List stored to be printed on Engine Status Sheet. The Error Log lists the latest 20 errors. When the reset operation is done, the printer reboots.

PRODUCT DESCRIPTIONS Panel Setting 1-50

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EPSON AcuLaser C8500 Revision B

1.7 RAM Expansion

This printer generates the following errors when it detects insufficient memory condition.

“Mem Overflow”, “Image Optimum”, “Need Memory”

In this case, try taking any of the actions below. See Table 1-29.



For B/W print, lower the resolution to 300 dpi. See Table 1-30.



For color print, use a non-reciprocal compression format. See Table 1-31.



Reduce the size of the data buffer. See Table 1-32.



Fix the interface. See Table 1-33.

To avoid these errors without fail, however, adding memory is recommended.

1.8 Dimensions

The dimention of EPSON AcuLaser C8500 is shown below..

Figure 1-14. the printer

PRODUCT DESCRIPTIONS RAM Expansion 1-51

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EPSON AcuLaser C8500 Revision B

Figure 1-15. With Large Capacity Paper Unit and Duplex Unit

Figure 1-17. With 500-sheet Paper Cassette Unit

1.9 Engine Restrictions

The engine restrictions are classified as follows. Refer to the following tables for more details.



Restrictions on the period from powering on to printing enable. See Table 1-29.



Restrictions on the period from the print command is received (Density adjustment at Cycle up). See Table 1-30.



Restrictions on continuous printing. See Table 1-31.



Restrictions on the period from printing finished to mechanism ceases. (Density adjustment at Cycle up). See Table 1-32.



Figure 1-16. With 500-Sheet Paper Cassette Unit (with casters-

standards)

PRODUCT DESCRIPTIONS Engine Restrictions 1-52

Others. See Table 1-33.

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EPSON AcuLaser C8500 Revision B

Table 1-29. Restrictions on the period from powering on to printing enable

Item IBT Rotations

M/C Check Approx. 6-7 Each time.

Fuser Warm Up -- Each time. Fuser warm up

Operational

Conditions

Description Notes

CRU installation, check if there is any paper jam remaining.

Process Control (Power Up)

Calibrating when new photoconductor unit is installed

Print quality adjustment (IBT ghost measures)

NOTE:

Approx. 5 seconds/ rotation

5-77

Printing was stopped because of toner empty error at the last time.

A new photoconductor unit is installed.

When the IBT rotations are more than 1000 and printed 200 pages or more, additionally, 65Rh<Humidity<35%Rh

Recovering operation from the toner empty error.

Draws patches on both ends on the photoconductor and supplies toner to the cleaner.

Remove the wax adheres on the IBT. The wax is included in toner and caused “ghost”.

Once wax is removed, the counter is reset and restart to count. 200pages regardless of paper size (A4/A3).

Executed only when the powering on or cover opened/closed.

PRODUCT DESCRIPTIONS Engine Restrictions 1-53

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EPSON AcuLaser C8500 Revision B

Table 1-30. Restrictions on the period from the print command is received to printing started (Density adjustment at Cycle up)

Item IBT Rotations

Density adjustment (Cycle Up)

Calibrating when a new toner is detected.

Rotary2-3

1. At power on and Fuser temperature is 94C or less.

2. Every 20 pages (40 pages when 2up printing9

3. After Error or Jam.

4. The first printing after the amount of toner is adjusted (Addmix, Sweep Out). After Empty Reset operation is executed.

When a new toner is detected at powering turned on or a cover opened/closed immediately after Toner empty is detected.

Operational

Conditions

Description Notes

Decide the BCR and laser output value.

If any new toners are detected, repeat rotary rotation 2 or 3times.

During the operation, the printer becomes APQ mode.

Lose toner in the cartridge.

NOTE:

Approx. 5 seconds /rotation

PRODUCT DESCRIPTIONS Engine Restrictions 1-54

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EPSON AcuLaser C8500 Revision B

Table 1-31. Restricts on continuous printing

Item IBT Rotations

High coverage printing measures

Continuous printing restriction

Approx. 5

1. Color mode 65%: total A3 2 pages detected. 50%: total A3 10pages detected. 35%: total A3 48pages detected.

2. B/W mode 53%: total A3 2 pages detected. 41%: total A3 10pages detected. 35%: total A3 48pages detected.

*Setting value may be changed.

Corresponds to A3 (50 pages), A4 LEF 2up (100 pages) since printing started.

Operational

Conditions

Description Notes

Stop printing to recover print density if the printing with high coverage that exceeds dispense capacity.

Interrupt continuous printing to keep toner density.

-Cycle-down is done after the printing currently executed is finished.

-During density adjustment at cycledown, it is decided if supply toner or not.

-Cycle-down is done after the printing currently executed is finished.

-It may reach A3 (6pages), A4 LEF 2-up (12 pages) during Toner Near Empty.

Detects low-density Approx. 5

After narrow B/W printing

NOTE:

Approx. 5 seconds/ rotation

Approx. 5

In case that low-density is detected while density adjustment in Cycle-up or during printing.

After printed 30 pages of B/W continuous printing on paper up to 257mm width (B5,B4)

Interrupt printing to supply toner when low density is detected.

Interrupt to prevent Fuser from overheating.

-Cycle-down is done after the printing currently executed is finished.

-During density adjustment at cycledown, it is decided if supply toner or not.

-Cycle-down is done after the printing currently executed is finished.

-After Cycle-down, idle for 1 minute.

-During idling, printer becomes APQ mode.

PRODUCT DESCRIPTIONS Engine Restrictions 1-55

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EPSON AcuLaser C8500 Revision B

Table 1-32. Restrictions on the period from printing finished to mechanism ceases (Density adjustment at Cycle down)

Item IBT Rotations

Density adjustment (at cycle down)

Density adjustment (supply toner) 6-84

1. Fuser temperature is 94C or less.

2. Every 20 pages(40 pages when 2-up printing.

3. When the total waiting time exceeds 4 hours.

4. When high Coverage is detected.

5. The first printing after the amount of toner is adjusted (Addmix, Sweep Out). After Empty Reset operation is executed.

6. In case that low-density is detected while density adjustment in Cycle-up or during printing.

-Low-density is detected during the density

adjustment.

-During high-coverage measures( not

necessary)

-Near Toner Empty is detected.

Operational

Conditions

Description Notes

TC control

Addmix (supply toner)

-It may be A3 (6 pages), A4 LEF 2-up (12 pages) when toner near empty occurs.

-During the operation, the printer becomes APQ mode.

During the operation, the printer becomes APQ mode.

Density adjustment (sweeps toner out)

Print quality adjustment (Rotary idles)*1

Print quality adjustment (IBT ghost masures)*1

NOTE:

Newly added for Cordonbleu.

6-12

Max 10

Rotary

revolutions

High-density is detected during the density adjustment.

When the total number of rotary revolutions is relatively small to K toner supplies.

When the IBT rotations are more than 1000 and printed 200 pages or more, additionally, 65%Rh<Humidity<35%Rh.

Sweep Out (sweep toner out)

Rotate the rotary and correct developer into the cartridge collector. (Rotary homepositioning operation is repeated several times at cycle-down in order to loosen the toner inclined by B/W continuous printing and to stabilize dispense rate)

Remove the wax that adheres on the IBT (Toner includes wax, and it can cause “ghost”).

During the operation, the printer becomes APQ mode.

Once wax is removed, the counter is reset and restart to count. 200 pages regardless of paper size (A4/A3).

Rotates two times more than normal cycle-down.

PRODUCT DESCRIPTIONS Engine Restrictions 1-56

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EPSON AcuLaser C8500 Revision B

Table 1-33. Others

Item IBT Rotations

P/H motor rotation during warm-up

1 minute

P/H motor starts its rotation 1 minute before warm-up completed.

Operational

Conditions

Description Notes

Measures for fixing inferior at start-up. (Photoconductor does not rotate)

P/H motor rotation during standby

0.5 to 1 sec. at 15 to 30 min. intervals.

P/H motor operates momentary when the printer is on standby.

To prevent the Fuser Nip from leaving marks when P/H motor left heated. (Photoconductor does not rotates)

P/H motor operates momentary when the printer is in standby mode

PRODUCT DESCRIPTIONS Engine Restrictions 1-57

Page 78

OPERATING PRINCIPLES

CHAPTER

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EPSON AcuLaser C8500 Revision B

2.1 Print Process

2.1.1 Print Process Overview

This printer is a full color laser printer that works by the principle of electrophotographic recording. Printers using the principle of electrophotographic recording available up to now were only capable of printing with a single color of toner. This printer prints in full color by forming an image of the various color toners “Yellow, Magenta, Cyan, Black (YMCBk)” on the drum and overlapping the various toner images on the IBT BELT ASSY (hereinafter referred to as Belt).

The print process consists of the following basic steps:

1) Electrification: The drum surface is charged with electricity.

2) Exposure: The image area is exposed by laser radiation.

3) Developing: The image area is developed with toner.

4) Primary transfer: Toner image on the drum is transferred to the belt.

5) Cleaning: The drum is cleaned.

6) Repeat: When in the YMCBk mode, steps 1 - 5 are repeated for each of the 4 toner colors, and the complete toner image is formed of the 4 toner colors on the Belt. (This step is not performed in the B/W mode.)

7) Secondary transfer: The complete 4-color toner image on the belt is transferred to the paper adhering to the belt.

8) Electrical discharging: The electric charge of the paper is discharged.

9) Cleaning: The Belt is cleaned.

10) Fixing: The toner is fixed on the paper by heat and pressure.

Figure 2-1. Print Process Overview

Operating Principles 2-2

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EPSON AcuLaser C8500 Revision B

2.1.2 Total Print Process Schematic Diagram

NOTE:

DEVELOPER ASSY Y, DEVELOPER ASSY M, DEVELOPER ASSY C, and DEVELOPER ASSY BK are hereinafter referred to by the generic term “Developer Assy.”

TONER CARTRIDGE Y, TONER CARTRIDGE M, TONER CARTRIDGE C and TONER CARTRIDGE BK are hereinafter referred to by the generic term “Toner Cartridge.”

The schematic diagram of the entire print process is as shown below.

Figure 2-2. Total Print Process Schematic Diagram

Operating Principles 2-3

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EPSON AcuLaser C8500 Revision B

2.1.3 Print Process Technical Explanation

2.1.3.1 Electrification

The surface of the drum turning at a certain speed is uniformly electrified with a negative charge by discharging the BCR (Bias Charge Roll) inside the DRUM CARTRIDGE.



The BCR is constantly in contact with the drum and turns together with the drum. The BCR is a conductive roll that receives a supply of discharge voltage from the HVPS, and discharges by negative DC voltage combined with AC voltage. BCR discharge is carried out in minute intervals near where contact is made with the drum. The drum surface is provided with a uniform negative charge by DC bias voltage. The drum surface is a photoconductor (insulator in the dark, and conductor when light is received), and the inside of the drum consists of a conductive material (aluminum cylinder).

Figure 2-3. Electrification

Operating Principles 2-4

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EPSON AcuLaser C8500 Revision B

2.1.3.2 Exposure

This is the step where the negatively charged drum surface is scanned with laser radiation, forming an invisible electrostatic latent image.



Laser radiation is emitted in accordance with print data (image data) from the printer controller. Laser radiation is output when print data instructs the printer to print a pixel; laser radiation is not output when instructed not to print (laser beam is emitted for the part to be developed with toner, and not emitted for the part not to be developed with toner).

Laser radiation is emitted from the laser diode inside the ROS ASSY. The drum surface is scanned lengthwise from end to end using a rotating polygon mirror, stationary mirror, and lens attached to the Scanner Assy of the ROS ASSY.

The laser radiation exposed to the drum surface generates a (electron <= > hole) inside the photoconductive layer. (Electrons are excited in the photoconductive band, thus producing a hole in the valence band.) Attracted to the electric field, the electrons migrate toward and flow into the metal part inside.

The hole moves toward the outer surface of the photoconductive layer, where it reunites with the negative charge (electron) of the outer surface, thus reducing the negative charge. As a result, an invisible electrostatic latent image (print image) is formed on the part where the potential of the drum surface rises.

Figure 2-4. Exposure-1

Figure 2-5. Exposure-2

Operating Principles 2-5

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EPSON AcuLaser C8500 Revision B

2.1.3.3 Developing

In this step, toner is electrically applied to the invisible electrostatic latent image on the drum surface, forming a visible image with toner on the drum.



The printer employs “rotary developing” whereby 4 developers (Developer Assy) are rotated/moved in sequence, and “trickle developing” consisting of a 2-part developer consisting of carrier and toner.

The developer inside the Developer Assy is mixed by a spiral-shaped agitator called an “Auger,” and is furthermore supplied to the Magnet Roll located near the drum surface. The developer consisting of toner and carrier is provided with frictional electrification produced by mixing (toner is provided with a negative charge, and carrier with a positive charge) so that they electrically attract each other.

The carrier is a magnetic substance that is attracted to the magnetic Magnet Roll, where a uniform layer is formed by passing of the Trimmer Blade.

The surface of the Magnet Roll is coated with a thin semiconductor sleeve, which is supplied DB (Developing Bias) voltage from the HVPS. DB voltage is negative DC voltage coupled with AC voltage. DC voltage keeps the Magnet Roll at a certain negative voltage relative to the photoconductive layer of the drum. Potential is lower for the part of the drum surface where the negative charge does not decrease than for the Magnet Roll, and higher than the Magnet Roll for the portion of the drum surface where the negative charge decreases. AC voltage shakes the developer on the surface of the Magnet Roll so the toner can more easily spring toward the drum.

The negatively charged toner is therefore attracted only to the part (electrostatic latent image) where the negative charge of the drum surface has dropped lower than that of the Magnet Roll, forming a toner image on the drum.

When toner adheres to the drum, the negative charge of that part increases, the potential drops, and the toner adherence capability falls.

Figure 2-6. Exposure-1

Operating Principles 2-6

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EPSON AcuLaser C8500 Revision B



As the number of prints increases, more toner in the developer is consumed. In order to maintain the proper developing concentration, an amount of toner equal to the amount consumed must be replenished from the Toner Cartridge to the Developer Assy. This is called the “toner dispenser.” Two types of control are used for the toner dispenser: PCDC and ADC. (For more information concerning PCDC and ADC, see 2.7.6 "Process Control" in this chapter.



In order to obtain a full color image consisting of 4 toner colors, a toner image of each of the colors YMCB must be formed on the drum in sequence. The full color toner image is formed by facing the various Developer Assy's toward the drum in sequence by rotating the ROTARY FRAME ASSY's positioned at 90( intervals on the circumference of the 4 Developer Assy's. This is referred to as “rotary developing.” (For more information on each position, see 2.7.8 "DEVE. Control" in this chapter.)

(

The developing charge characteristics of the developer gradually deteriorate due to dirt on the surface produced by toner and smashing of the surface due to mixing. Small amounts of carrier are added to the toner in the Cartridge in order to maintain the charge characteristics, and carrier is dispensed at the same time with toner.

Carrier collected a little at a time in a separate chamber in the Toner Cartridge. By doing so, developer (most of which is carrier) is replaced a little at a time, thus enabling charge characteristics to be maintained. This is referred to as “trickle developing.” Trickle developing is carried out using the rotation of the ROTARY FRAM ASSY when rotary developing is performed.

The mechanism if trickle developing is as follows:

1. An L-shaped pipe is inserted in the developer.

2. A small amount of developer is introduced to the pipe.

3. The developer is scooped out and goes deeper into the pipe.

4. Developer is collected in the Toner Cartridge.

Figure 2-7. Exposure-2

Figure 2-8. Exposure-3

Operating Principles 2-7

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2.1.3.4 Primary Transfer (Drum --> Belt)

This is the This is the step where toner image formed on the drum surface is transferred to the Belt of the TRANSFER ASSY by the 1ST BTR (First Bias Transfer Roll).

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The 1ST BTR is a conductive roll that receives a supply of positive high voltage from the HVPS. The IST BTR touches the back surface of the Belt and turns with the Belt to provide the back surface of the Belt with a positive charge.

The toner image (negatively charged) on the drum is attracted by the positive charge of the back surface of the Belt, and is transferred from the drum to the Belt.

Figure 2-9. Primary Transfer-1

Figure 2-10. Primary Transfer-2

Operating Principles 2-8

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2.1.3.5 Cleaning (Drum)

This is the step where excess toner and residual charge are eliminated from the drum.

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Physical drum cleaning If toner is allowed to remain on the drum, it will interfere with subsequent

steps in the process. Remaining toner is scraped off by the Cleaning Blade in contact with the drum.

The toner scraped off the drum is carried off by the Auger inside the DRUM CARTRIDGE, and is collected in the WASTE TONER BOX.

Electrical drum cleaning A charge remains on the drum surface even after the excess toner is

scraped off by the Cleaning Blade. If the charge is allowed to remain on the drum surface, it will interfere with subsequent steps in the process. Residual charge is therefore eliminated from the drum surface by LED light inside the ERASE LAMP ASSY.

Figure 2-11. Cleaning-1

Figure 2-12. Cleaning-2

Operating Principles 2-9

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2.1.3.6 Repeat (Complete Toner Image Forming)

This is the step where the complete toner image consisting of 4 colors is formed on the Belt by sequentially transferring toner images of each color on the drum surface to the Belt.

Figure 2-13. Repeat-1 Figure 2-14. Repeat-2

Operating Principles 2-10

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2.1.3.7 Secondary Transfer (Belt --> Paper)

This is the step where the complete toner image formed on the Belt is transferred to paper by supplying voltage to the CONTACT ROLL, BACK UP ROLL, AND 2ND BTR (Second Bias Transfer Roll).

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The CONTACT ROLL is a small-diameter metal roll that makes contact with the BACK UP ROLL. The BACK UP ROLL is a conductive roll that touches the back surface of the Belt, and sandwiches the BELT together with 2ND BTR. The 2ND BTR is a conductive roll that grounds to the frame ground via the center metal shaft.

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The CONTACT ROLL receives a supply of negative high voltage (DC voltage) from the HVPS, and provides the BACK UP ROLL with electric potential. Along with neutralizing the positive charge on the back surface of the Belt, the negative potential conveyed to the BACK UP ROLL induces a positive charge to the 2ND BTR via the Belt and paper. The BACK UP ROLL, Belt, and 2ND BTR each have resistance. Because the paper can act as a capacitor, a positive charge is induced for the 2ND BTR Neutralizing the charge on the back surface of the belt weakens the Belt's ability to maintain toner. The complete toner image on the Belt is transferred to paper by the positive charge induced for the 2ND BTR.

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The paper is fed in synch with the position of the complete toner image on the Belt, and is transported still adhering to the Belt. When the paper is fed into the area where the 2ND BTR and BACK UP ROLL face each other, high voltage is supplied by the HVPS.

Figure 2-15. Secondary Transfer-1

Operating Principles 2-11

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A total of 4 toner images is transferred from the drum to the Belt at the “Repeat (Complete Toner Image Formation) step. During this time, the toner image in the process of being formed on the Belt will be destroyed if the 2ND BTR touches the Belt. The 2ND BTR must therefore be moved away from the Belt (retract) except for when transferring the image to paper (advance). Advance and retract are switched by the BTR CAM SOLENOID.

2.1.3.8 Electrical Discharge

This is the step where the paper charge is neutralized/eliminated by allowing the DC voltage to escape to the surface of the backside of the paper from the Detack Saw (discharge plate).

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The Detack Saw receives a supply of high voltage from the HVPS. Image quality is negatively affected by splattering of toner caused by the positive charge induced at the “Secondary Transfer” step. The paper is discharged by the Detack Saw to prevent affecting the image quality.

Figure 2-16. Secondary Transfer-2

Operating Principles 2-12

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2.1.3.9 Cleaning (Belt)

This is the step where toner remaining on the belt after transferring the complete toner image to the paper is physically removed.

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Excess toner from the “Secondary Transfer” step remains on the Belt. If toner is allowed to remain on the Belt, it will interfere with subsequent steps in the process. Remaining toner is scraped off by the Cleaning Blade inside the BELT CLEANER ASSY in contact with the back surface of the Belt. The toner scraped off the Belt is conveyed to inside of the AUGER HIGH ASSY, and is collected in the WASTE TONER BOX.

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A total of 4 toner images are transferred from the drum to the Belt at the “Repeat (Complete Toner Image Formation) step. During this time, the toner image in the process of being formed on the Belt will be destroyed if the Cleaning Blade touches the Belt. The Cleaning Blade therefore must be moved away from the Belt (retract) except for when transferring the image to paper (advance). Advance and retract are switched by the BTR CAM SOLENOID.

2.1.3.10 Fixing

This is the step where toner is fixed on the paper by heat and pressure.

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Because even the slightest touch by the fingers would destroy the complete toner image transferred from the Belt, the toner image is fixed on the paper by the FUSER ASSY (fixer).

Toner is melted by heat of the HEAT ROLL, which uses the H/R HEATER as a source of heat, and is fused on the paper by the pressure of being sandwiched between the HEAT ROLL and PRESSURE ROLL. The PRESSURE ROLL is equipped with a built-in P/R HEATER as an auxiliary source of heat.

Figure 2-17. Cleaning

Figure 2-18. Fixing

Operating Principles 2-13

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2.2 Print Data Flow

2.2.1 Data Flow

Print data (electric signal) from the printer controller forms a print image through the following flow:

NOTE:

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Formation of secondary print image A line of dot images is formed by scanning while laser radiation is turned ON/OFF in accordance with electric signals (VIDEO signal: Expresses image data according to high/low voltage level) from the printer controller. A single color image (secondary dot image) is completed by scanning 1 screen of the image. To get a full color image, a secondary dot image is formed for each of the 4 colors respectively.

Resolution is determined as follows: No. of dots in main scanning direction / inch No. of dots in sub scanning direction / inch

Figure 2-20. Formation of Secondary Print Image

Figure 2-19. Print Data Flow

Operating Principles 2-14

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2.3 Drive Transmission Route

2.3.1 PROCESS DRIVE ASSY

Rotation force of the PROCESS DRIVE ASSY is conveyed by the following flow.

2.3.2 FUSER MOTOR ASSY

Rotation force of the FUSER MOTOR ASSY is conveyed via the FUSER DRIVE ASSY by the following flow.

Figure 2-21. Process Drive Assay

Operating Principles 2-15

Figure 2-22. Fuser Motor Assy

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2.3.3 P/H MOTOR ASSY

Rotation force of the P/H MOTOR ASSY is conveyed via the P/H DRIVE ASSY by the following flow.

2.3.4 ROTARY MOTOR ASSY

Rotation force of the ROTARY MOTOR ASSY drives the ROTARY FRAME ASSY.

Figure 2-24. Rotary Motor Assy

Figure 2-23. P/H Motor Assy

Operating Principles 2-16

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2.3.5 INV MOTOR ASSY (Option Duplex)

Rotation force of the INV MOTOR ASSY is conveyed by the following flow.

Figure 2-25. INV Motor Assy

Operating Principles 2-17

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2.3.6 Gear Layout

2.3.6.1

Printer

Figure 2-26. Gear Layout - Printer

Operating Principles 2-18

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2.3.6.2 Option Duplex

Figure 2-27. Gear Layout - Option Duplex

Operating Principles 2-19

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2.4 Paper Feed

2.4.1 Paper Feed Path (When no options are installed)

NOTE:

The paper feed at the bottom of the printer is called “Cassette 1”, the first level of the optional FEEDER UNIT is called “Cassette2, and the second level is called “Cassette 3”.

Figure 2-28. Paper Feed Path (When no options are installed)

Operating Principles 2-20

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2.4.2 Paper Feed Path (Option Duplex)

Figure 2-29. Paper Feed Path (Option Duplex)

Operating Principles 2-21

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2.4.3 Paper Conveyance Path Layout

Figure 2-30. Paper Conveyance Path Layout

Operating Principles 2-22

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2.5 Function of Main Working Parts

The main working parts of the printer are explained in correspondence to the drawings. The parts are divided into the following blocks according to configuration.

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Paper Tray

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Paper Feeder

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MSI/Paper Transportation

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MSI/Paper Transportation

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Xerographics

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Xerographics



Development

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IBT

IBT Fusing Fusing Paper Exit Frame & Drive

I II

2.5.1 Paper Cassette

UNIVERSAL CASSETTE

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The END GUIDE is a movable guide that moves in the paper conveyance direction, and aligns the rear edge of the paper. Moving the END GUIDE moves the position of the SIZE ACTUATOR via the SECTOR GEAR. The SIZE ACTUATOR is turned ON by pushing in the Paper Size Switch on the SIZE SWITCH ASSY. Changing the position of the SIZE ACTUATOR changes the ON/OFF combination of the 4 Paper Size Switches. The printer detects the paper size according to the ON/OFF combination.

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The REAR GUIDE ASS moves vertically in the paper conveyance direction, and aligns the sides of the paper.

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In order to obtain friction force by pushing on the paper FEED ROLL, the BOTTOM PLATE ASSY receives push up force by elastic force of the N/F SPRING. A Magnet that corresponds to the LOW PAPER SENSOR is attached to the back surface of the BOTTOM PLATE ASSY.

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The FRONT SNUBBER is a mechanism for preventing more than one sheet of paper from being fed at a time. The device utilizes the weight of the paper, pressing the corner of the paper edge to convey only one sheet at a time.

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Electrical

Operating Principles 2-23

Epson AcuLaser C8500 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PRODUCT DESCRIPTIONS

1.1 Features

1.2 Specifications

1.2.1 Basic Specifications

1.2.2 Paper Specifications

1.2.2.1 Paper Types

1.2.2.2 Paper Source Classification

1.2.2.3 Printable Area

1.2.3 Reliability and Durability

1.2.4 Operating Environment

1.2.6 Electrical Specifications

1.2.7 Process Specifications

1.2.8 Applicable Standards

1.2.9 Options and Consumable Products

1.2.10 Regularly Replaced Parts

1.2.11 Exterior View and Parts

1.2.12 Controller Specifications

1.2.13 Controller Configuration

1.3 Interface Specifications

1.3.1 Parallel Interface Specifications

1.3.2 Ethernet Interface

1.3.3 Type B Interface

1.4 Control Panel

1.4.1 Appearance and Descriptions

1.4.1.1 LED Description

1.4.2 Button Functions

1.5 Service Functions

1.5.1 Hex Dump Mode

1.5.2 Support Mode

1.5.3 EEPROM Initialization

1.5.4 Panel Setting Value Initialization

1.5.5 Formatting the Flash ROM Module

1.5.6 Program ROM Update

1.5.7 ROM Module Copy

1.5.8 Maintenance Mode

1.5.9 Error Recovery Operation (CPU Reset)

1.6 Panel Setting

1.6.1 Setting Methods

1.6.1.1 OneTouch mode

1.6.1.2 SelecType mode

1.6.2 SelecType Setting Menu List

1.6.3 Details of Menus and Settings

1.6.3.1 Printing Menu

1.6.3.2 Tray Menu

1.6.3.3 Config Menu

1.6.3.4 Setup Menu

1.6.3.6 Toner Transfer Menu

1.6.3.5 Support Menu

1.6.3.7 Maintenance Menu

1.7 RAM Expansion

1.8 Dimensions

1.9 Engine Restrictions

OPERATING PRINCIPLES

2.1 Print Process

2.1.1 Print Process Overview

2.1.2 Total Print Process Schematic Diagram

2.1.3 Print Process Technical Explanation

2.1.3.1 Electrification

2.1.3.2 Exposure

2.1.3.3 Developing

2.1.3.4 Primary Transfer (Drum --> Belt)

2.1.3.5 Cleaning (Drum)

2.1.3.6 Repeat (Complete Toner Image Forming)

2.1.3.7 Secondary Transfer (Belt --> Paper)

2.1.3.8 Electrical Discharge

2.1.3.9 Cleaning (Belt)

2.1.3.10 Fixing

2.2 Print Data Flow

2.2.1 Data Flow

2.3 Drive Transmission Route

2.3.1 PROCESS DRIVE ASSY

2.3.2 FUSER MOTOR ASSY

2.3.3 P/H MOTOR ASSY

2.3.4 ROTARY MOTOR ASSY

2.3.5 INV MOTOR ASSY (Option Duplex)

2.3.6 Gear Layout