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Kyocera KM-2020 Service Manual

Kyocera KM-2020
217 pages
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SERVICE
MANUAL
Published in Dec. ’03
842C9113
Revision 3
KM-1620
KM-2020

Table of Contents

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Kyocera KM-2020 Specifications

General IconGeneral
TypeAll-in-One Printer
FunctionsPrint, Copy, Scan, Fax
Print TechnologyLaser
Print Speed (Black)20 ppm
Print Resolution600 x 600 dpi
Copy Speed (Black)20 cpm
Copy Resolution600 x 600 dpi
Scan Resolution600 x 600 dpi
Scanner TypeFlatbed
Fax Transmission Speed33.6 kbps
Paper Capacity250 sheets
Duplex PrintingManual
Supported Operating SystemsWindows, Mac OS, Linux
Paper SizeA4, Letter, Legal
InterfaceUSB

Summary

Kyocera Service Manual Overview

General Safety Precautions

Safety Warnings and Symbols

Installation Safety Precautions

Maintenance Safety Precautions

Specific Maintenance Hazards and Precautions

Highlights hazards like laser units, high potentials, and hot components during maintenance.

Miscellaneous Safety Measures

Machine Specifications Overview

Copier Component Identification

Operation Panel Layout and Controls

Drum Handling and Storage Precautions

Installation Environment Requirements

Environmental Conditions for Installation

Specifies required temperature, humidity, and power supply conditions for installation.

Installation Location Guidelines and Clearance

Provides guidelines for location, ventilation, lighting, and required clearances around the machine.

Unpacking and Initial Installation Procedure

Step-by-Step Machine Installation Steps

Outlines the sequence of operations for unpacking and installing the machine.

Installing the Optional Paper Feeder

Toner Installation Procedure

Installing and Preparing the Toner Container

Steps for installing the toner container, including shaking and insertion.

Installing the Paper Feeder Unit

Image Quality Adjustment Procedures

Adjusting Leading Edge Timing for Image Quality

Procedure to correct leading edge misalignment in image printing.

Adjusting Image Center Line for Quality

Procedure to correct image center line misalignment.

Installing the Document Processor (DP)

Document Processor (DP) Installation Steps

Step-by-step instructions for the installation of the optional Document Processor.

DP Operation and Alignment Check

Verifying DP Installation and Image Alignment

Checks DP installation and performs image alignment adjustments via maintenance mode.

Scanner Adjustments via Maintenance Mode

Sub-Scan Line Adjustment Procedure

Procedure for adjusting the sub-scan line for scanner image quality.

Leading Edge Timing Adjustment Procedure

Procedure for adjusting the leading edge timing for scanner image quality.

Center Line Adjustment Procedure

Procedure for adjusting the center line for scanner image quality.

Installing the Duplex Unit Option

Duplex Unit Installation Steps

Detailed steps for detaching and refitting the duplex unit.

Duplex Copy Image Adjustments

Duplex Leading Edge Timing Adjustment

Procedure to adjust leading edge timing for duplex copy images.

Duplex Center Line Adjustment

Procedure to adjust the center line for duplex copy images.

Installing the Drawer Heater Option

Installing the Key Counter Option

Maintenance Mode Operations

Entering and Executing Maintenance Items

Describes how to enter maintenance mode and execute various maintenance items.

Maintenance Mode Item List Overview

Drive, Paper Feed, and Optical Maintenance Items

Lists maintenance items related to drive, paper feed, and optical sections.

High Voltage and Developing Maintenance Items

Fixing, Operation Panel, and Mode Setting Items

Maintenance Mode Item Descriptions

U030: Checking Motor Operation

U053: Fine Motor Speed Adjustment

U065: Adjusting Scanner Magnification

U066: Adjusting Scanner Leading Edge Registration

U071: Adjusting DP Scanning Timing

U072: Adjusting DP Center Line

U092: Automatic Scanner Adjustments

U100: Setting Main High Voltage

U130: Toner Install Mode

U161: Setting Fixing Control Temperature

Image Printing and Scanning Margin Adjustments

Adjusting Printing Margins

Procedure to adjust the margins for printing.

Adjusting Scanning Margins

Procedure to adjust the margins for scanning originals from the DP.

U903: Checking/Clearing Paper Jam Counts

U904: Checking/Clearing Service Call Counts

Paper Misfeed Detection

Paper Misfeed Indication and Removal

Explains how paper misfeeds are indicated on the panel and how to remove jammed paper.

Paper Misfeed Detection Conditions

Misfeed Detection Circuitry Overview

Diagram illustrating the switches and solenoids involved in paper misfeed detection.

Paper Misfeed Troubleshooting Guide

Paper Feed Section Misfeeds

Troubleshooting table for paper misfeeds occurring in the paper feed section.

Paper Conveying Section Misfeeds

Troubleshooting table for paper misfeeds occurring in the paper conveying section.

Transfer, Fixing, Exit, Feedshift, Duplex Misfeeds

DP Misfeed Conditions

Copier Paper Misfeed Troubleshooting

Jam Code 00: Initial Power-On Misfeed

Troubleshooting steps for misfeeds detected when the power switch is turned on.

Jam Code 10: Bypass Tray Misfeed

Troubleshooting steps for misfeeds related to the bypass tray paper feed.

Jam Code 11: Drawer 1 Misfeed

Troubleshooting steps for misfeeds related to drawer 1 paper feed.

Jam Code 12: Drawer 2 Misfeed

Jam Code 13: Drawer 3 Misfeed

Jam Code 14: Drawer 4 Misfeed

Jam Code 15: Vertical Conveying Misfeed

Jam Code 16: Bypass Tray Multiple Sheets

Jam Code 20: Bypass Tray Multiple Sheets

Jam Code 21: Drawer 1 Multiple Sheets

Jam Code 22: Drawer 2 Multiple Sheets

Jam Code 23: Drawer 3 Multiple Sheets

Jam Code 24: Drawer 4 Multiple Sheets

Jam Code 40: Fixing Section Misfeed

Jam Code 50: Exit Section Misfeed

Jam Code 52: Feedshift Section Misfeed

Jam Code 60: Duplex Conveying Misfeed

Jam Code 61: Duplex Exit Misfeed

DP Paper Misfeed Troubleshooting

DP Jam Code 70: Original Feed Error

Troubleshooting for original feed errors in the Document Processor.

DP Jam Code 71: Original Conveying Section 1 Jam

Troubleshooting for jams in the DP original conveying section 1.

DP Jam Code 72: Original Size Error Jam

Troubleshooting for jams caused by original size errors in the DP.

DP Jam Code 73: Original Conveying Section 2 Jam

Troubleshooting for jams in the DP original conveying section 2.

DP Jam Code 74: Original Conveying Section 3 Jam

DP Jam Code 75: Original Switchback Section Jam

Frequent Original Jams Troubleshooting

Self-Diagnosis Functionality

Understanding Self-Diagnostic Codes

Explains the self-diagnostic function and lists error codes with causes and corrections.

Communication and Processing Error Codes

Scanner and Polygon Motor Error Codes

Fixing Unit Temperature Error Codes

Image Formation Problems Overview

Image Output Issues Overview

Lists common image formation problems with references to detailed troubleshooting pages.

No Image Appears (White) Troubleshooting

No Image Appears (Black) Troubleshooting

Image Too Light Troubleshooting

Consistent Leading Edge Misalignment

Sporadic Leading Edge Misalignment

Image Center Alignment Troubleshooting

Electrical Problems Troubleshooting

Machine Not Operating at Power-On

Troubleshooting steps when the machine does not operate after power-on.

Scanner Motor Not Operating

Paper Feed Clutch Issues

Lamp Operation Failures

Fixing Heater Operation Failures

Charging and Bias Output Failures

Original Size Detection Errors

Power-On Paper Jam Indication

Mechanical Problems Troubleshooting

Paper Feed Issues Troubleshooting

Troubleshooting for no paper feed, skewed feed, and multiple sheet feeds.

Scanner and Paper Feed Issues

Troubleshooting for scanner travel problems and multiple sheet feeds.

Paper Jams and Toner Issues

Troubleshooting for paper jams and toner drops on the paper path.

Assembly and Disassembly Precautions

General Safety Precautions for Assembly/Disassembly

General safety rules for handling PCBs, static discharge, and using testers.

Running Maintenance Items

Procedure for Executing Maintenance Functions

Describes the steps to enter maintenance mode and execute various functions.

Paper Feed Section Maintenance

Paper Feed Pulley Replacement

Paper Conveying Unit Maintenance

Registration Component Maintenance

Bypass Paper Feed Component Maintenance

Optical Section Maintenance Procedures

Scanner Wire Maintenance

Fitting Scanner Wires

ISU Replacement Procedure

Laser Scanner Unit Replacement

Longitudinal Squareness Adjustment

Scanner Magnification Adjustment

Scanner Auxiliary Magnification Adjustment

Scanner Leading Edge Registration Adjustment

Scanner Center Line Adjustment

Contact Glass Scanning Margin Adjustments

Drum Section Maintenance

Drum Separation Claw Maintenance

Main Charger Unit Replacement

Developing Section Maintenance

Transfer Section Maintenance

Fixing Section Maintenance

Fixing Press Roller Replacement

Fixing Heater Replacement

Heat Roller Separation Claw Maintenance

Heat Roller Replacement

Fixing Thermostat and Thermistor Replacement

Firmware Upgrade Procedure

Upgrading Main PCB Firmware

Procedure for upgrading the firmware on the main PCB using a flash DIMM.

PCB Replacement and Adjustment Notes

Paper Feed Section Overview

Optical Section Components

Original Scanning Process

Image Printing Process

Drum Section Components

Developing Section Components

Single Component Developing System

Transfer and Separation Sections

Fixing Section Components

Fixing Section Temperature Control

Duplex Section Components

Duplex Copying Paper Path

Electrical Parts Layout: PCBs

Electrical Parts Layout: Switches and Sensors

Electrical Parts Layout: Motors

Electrical Parts Layout: Other Components

Power Source PCB Details

Power Source PCB Block Diagram and Function

Explains the functions of the power source PCB circuit.

Power Source PCB Silk-Screen Diagram

Main PCB Block Diagram

Main PCB Functional Blocks

Illustrates the functional blocks within the Main PCB.

Main PCB Silk-Screen Diagram

PCB Connector Pin Assignments

PCB Connector Pin Assignments (Continued)

Operation Unit PCB Details

Operation Unit PCB Block Diagram

Illustrates the block diagram of the operation unit PCB.

Operation Unit PCB Silk-Screen Diagram

CCD PCB Details

CCD PCB Block Diagram and Function

Explains the CCD sensor's function and signal flow.

CCD PCB Silk-Screen Diagram

Timing Charts Overview

Timing Chart 2: Drawer Paper Feed (A3/11x17", Two Sheets)

Timing Chart 3: First Paper Feeder Paper Feed

Timing Chart 4: Second Paper Feeder Paper Feed

Image Adjustment Procedures Chart

Image Adjustment Order and Details

Lists image adjustments, their order, maintenance modes, and originals.

Image Adjustment Procedures (Continued)

Scanner Adjustment Procedures

Details scanner adjustments like magnification, margins, and alignment.

Automatic Image Adjustments

Maintenance Parts List

Periodic Maintenance Procedures

Periodic Maintenance Procedures (Continued)

General Wiring Diagram

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