HP C40D Cut Sheet Printers Maintenance Manual.pdf

Cut Sheet Printers

Maintenance Manual

Model C40D

E1195

HP Part No. C4672-90005

Notice

Hewlett-Packard makes no warranty of any kind with regard to this material, including,

but not limited to, the implied warranties of merchantability and fitness for a particular

purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental

or consequential damages in connection with the furnishing, performance, or use of this

material.

Hewlett-Packard assumes no responsibility for the use or reliability of its software on

equipment that is not furnished by Hewlett-Packard.

This document contains proprietary information which is protected by copyright. All

rights are reserved. No part of this document may be photocopied, reproduced, or trans-

lated to another language without the prior written consent of Hewlett-Packard Company.

The information contained in this document is subject to change without notice.

Hewlett-Packard Company

System Peripherals Operation

MS 44MC

19111 Pruneridge Avenue

Cupertino, CA 95014

Printing History

New editions are complete revisions of the manual. Update pages, which are issued

between editions, contain additional and replacement pages to be merged into the manual

by the customer. The date on the title page changes only when a new edition or a new

update is published. No information is incorporated into a reprinting unless it appears as a

prior update; the edition does not change when an update is incorporated.

The software code printed alongside the date indicates the version level of the software

product at the time the manual or update was issued. Many product updates and fixes do

not require manual changes and, conversely, manual corrections may be done without

accompanying product changes. Therefore, do not expect a one-to-one correspondence

between product updates and manual updates.

Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . .November 1995

Edition 2. . . . . . . . . . . . . . . . . . . . . . . . . . .June 1999

June 1999

Preface

The C40D Maintenance Manual contains all the information needed to maintain and ser-

vice Hewlett Packard C40D printers. The C40D printer series are high-speed, non-impact

printers utilizing electrophotographic imaging technology.

The information in this manual is for authorized field representatives who are familiar

with basic printer operations. It serves as a supplement to training classes and provides a

basis for discussion with regional field service engineers and customer support representa-

tives.

Using This Manual

This manual is organized into the following sections:

Section 1, Troubleshooting

Reviews the organization of the manual, the way the printer works, and how to trouble-

shoot the printer, including some standard procedures to follow when troubleshooting.

This chapter also includes a chart detailing exactly what each causes each error code, illus-

trations of all sensors in the printer, and a list of abbreviations used throughout the manual.

Section 2, TAG Cross- Reference Tables

Provides cross-reference tables; look up specific printer problem description (in either the

mechanical malfunction, error code, or print quality description tables), then turn to the

TAG indicated on the chart to troubleshoot the problem.

Section 3, Troubleshooting Analysis Guides

Detailed step-by-step procedures to help you isolate and resolve specific printer problems.

If you are not sure which TAG to start with, begin with the overview, TAG 001.

Section 4, Print Quality Samples

Shows print test patterns indicating specific problems, and referencing the TAG that treats

each problem.

Section 5, Diagnostic Tests

Reviews each printer software diagnostic.

Section 6, Wiring Diagrams and Electrical Data

Shows printer schematics and locations of individual components.

Section 7, Removal/Replacement Procedures

Outlines procedures to follow when removing and replacing printer parts, also called

FRUs (Field-Replaceable Units).

June 1999

iii

Section 8, Options

Provides information about the optional High Capacity Input and High Capacity Output

bins.

Section 9, General Printer Maintenance

Reviews printer maintenance procedures to complete during service calls.

Index

Provides a list of references to topics mentioned in this manual.

Other Manuals

The C-Series Illustrated Parts Catalog shows every FRU and CRU (customer-replaceable

unit) in the printer, including part number information. This information is frequently

updated.

The C40D Installation Manual, C4672-90007 , guides you through unpacking, setup, test-

ing, and network configuration of your C40D printer.

The C40D Operator’s Manual, C4672-90006 , contains all the information needed to oper-

ate Hewlett Packard C40D printers.

The C40D Technical Reference Manual, C4672-60012, is a complete guide to using fonts

and the PJL and PostScript emulations on the C40D. It also documents aspects of printer

usage in detail.

The Cut Sheet Printers Paper Specifications Guide, C4672-90002, explains the various

kinds of papers usable in the printer, how to care for them, and how to minimize paper-

related problems with the C40D.

November 1995

Please address any comments or questions with respect to this document to:

Publications Manager

System Peripherals Operation

MS 44MC

Hewlett-Packard Company

19111 Pruneridge Avenue

Cupertino, CA 95014

June 1999

Contents

Troubleshooting

Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

The Printing Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Paper Path and Cycle Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Simplex Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Duplex Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Sensors and Switches Illustrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Sensor and Switch Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

General Troubleshooting Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

The Problem: Printer or Host?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Running Test Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Protocol Converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Reading the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Confirming Line Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Using the Troubleshooting Analysis Guide (TAG) . . . . . . . . . . . . . . . . . . . . 1-15

Sample TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

Standard Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Power-on-reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Checking Continuity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Installing the Interlock By-pass Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Producing a Developed Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Producing a Toner Patch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Completing a Service Call. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

Clearing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

Error Message and Code Technical Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

TAG Cross-Reference Tables

Error Code/TAG Cross-Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Print Quality/TAG Cross-Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Mechanical Malfunction/TAG Cross-Reference . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Troubleshooting Analysis Guides

TAG 001: Troubleshooting a Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

TAG 002: Check Problem Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

TAG 010: Upper Cassette Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

June 1999

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