Printronix P300 Manual de usuario

P300 / P600 Line Printers

Maintenance Manual

P300 / P600 Line Printer

Maintenance Manual

P/N 140294–001, Rev C

US and CANADA Radio Interference Note

Note: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) this device may not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.

Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits.

The manufacturer is not responsible for any radio or television interference caused by using other than

recommended cables and connectors or by unauthorized changes or modifications to this equipment.

Unauthorized changes or modifications could void the user’s authority to operate the equipment.

The input/output (I/O) cable must be shielded for the printer to comply with FCC rules and regulations Part

15 governing the radiation limits for Class “A”equipment.

This Class A digital apparatus meets all requirements of the Canadian Interference–Causing Equipment

Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur

du Canada.

WARNING

This is a Class A product. In a domestic environment this product may cause radio interference in which

case the user may be required to take adequate measures.

Printronix, Inc. makes no representations or warranties of any kind regarding this material, including, but not

limited to, implied warranties of merchantability and fitness for a particular purpose. Printronix, Inc. shall not

be held responsible for errors contained herein or any omissions from this material or for any damages,

whether direct, indirect, incidental or consequential, in connection with the furnishing, distribution,

performance or use of this material. The information in this manual is subject to change without notice.

This document contains proprietary information protected by copyright. No part of this document may be

reproduced, copied, translated or incorporated in any other material in any form or by any means, whether

manual, graphic, electronic, mechanical or otherwise, without the prior written consent of Printronix, Inc.

Trademark Acknowledgements

P300/P600 Maintenance Manual, 140294–001, Revision B, January 1996.



17500 Cartwright Road, P.O. Box 19559

Irvine, California 92713

Telephone (714) 863–1900 FAX (714) 660–8682

Technical Support (714) 221–2686

iP300/P600

ABOUT THIS MANUAL

What This Maintenance Manual Contains

This

manual contains information for servicing and repairing P300 and P600

printers, in either pedestal or

floor cabinet (XQ) configurations, at the field maintenance level:

Chapter

1: Maintenance Overview

—

Briefly

describes features, options, physical configurations,

and controls and indicators of P300 and P600 printers.

Chapter 2: Principles of Operation — Describes the operation of the printer through the use of

block

diagrams and associated text .

Chapter

eventive Maintenance

—

Lists procedures for maintaining normal printer operation.

Chapter 4: Troubleshooting — Presents fault isolation procedures for determining the source of

common malfunctions.

Chapter 5: Corrective Maintenance — Contains procedures for printer adjustments, alignments,

and replacement of hardware.

Appendices

—

Appendix A lists PROM kit applications for P300 and P600 printers. Appendix B is a

PCBA

jumper location

guide. Appendix C lists part numbers for components replaceable at the

field maintenance level, cross–referenced to the illustrations in Chapter 5.

What This Manual Does Not Contain

Operational information covered in the User’

s Reference Manual is not repeated in this manual.

WARNING, CAUTION, IMPORTANT, and NOTE

Always

read and comply with

special information. Special information is highlighted under headings that

alert you to the nature of the information:

–WARNING –

AWARNING tells you of conditions that could harm you.

–CAUTION –

ACAUTION tells you of conditions that could damage the printer or

related equipment.

–IMPORTANT –

IMPORTANT gives you information vital to proper operation of the

printer.

NOTE:

ovides information

affecting printer operation consider

ed impor

tant

enough to emphasize.

P300/P600ii

iP300/P600

Table of Contents

Paragraph Title Page

CHAPTER 1. MAINTENANCE OVER

VIEW

1–1 Introduction 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2 Printer Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3 Specifications 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–4 Operation 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 2. PRINCIPLES OF OPERATION

2–1 Scope 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2

Basic Functions and Circuit Locations

2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 Principle States of Operation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 Buffer Load State 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 Print State 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–6 Paper Feed State 2–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–7 Ribbon Transport 2–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–8 Power Supply 2–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 3. PREVENTIVE MAINTENANCE

3–1 General 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2

Preventive Maintenance Checks and Service

3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–3 Inspection 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–4 Cleaning 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–5 Lubrication 3–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 4. TROUBLESHOOTING

4–1 General 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–2

Common Causes Of Malfunctions

4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–3 Testing 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–4 Fault Isolation 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–5 Performance Tests 4–71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P300/P600ii

Table of Contents

Paragraph Title Page

CHAPTER 5. CORRECTIVE MAINTENANCE

Section I. GENERAL

5–1 Introduction 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–2 Tools, Test Equipment, and Supplies 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section II. ALIGNMENTS AND ADJUSTMENTS

5–3

Ribbon Hub Height Adjustment

5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–4 Ribbon T

racking Check and Adjustment

5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–5 Shuttle Spring Force Adjustment 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–6 Setting Shuttle and Counterweight Preload 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–7 Hammer Spring Retensioning 5–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–8 Hammer Tip Alignment 5–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–9 Hammer Tip Height (Protrusion) Adjustment 5–16. . . . . . . . . . . . . . . . . . . . . . . . . . .

5–10 Platen Gap 5–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–11

Magnetic Pickup Gap

5–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–12

Magnetic Pickup Phasing Adjustment

5–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–13 Adapting Shuttle Motor to Line Frequency 5–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–14 Shuttle Belt 5–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–15 Paper Feed Belt 5–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–16 Paper Motion Sensor 5–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–17 Paper Out Detectors 5–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section III. REPLACEMENT

5–18 Printer Cover 5–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–19 Control Panel 5–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–20 Ribbon Drive 5–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–21

Ribbon Control PCBA

5–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–22 Ribbon Drive Motor 5–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–23 Ribbon Drive Blower 5–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–24

Shuttle Assembly

5–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–25 Hammer Spring 5–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–26 Hammer Coil 5–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–27

Counterweight Assembly

5–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–28

Flywheel Assembly

5–65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iiiP300/P600

Table of Contents

Paragraph Title Page

CHAPTER 5. CORRECTIVE MAINTENANCE

Section III. REPLACEMENT – continued

5–29

Cam W

ick 5–67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–30

Magnetic Pickup

5–67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–31 Shuttle Motor 5–70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–32 Shuttle Belt 5–72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–33 Paper Ironer 5–74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–34 Paper Feed Belt 5–76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–35 Paper Feed Motor 5–78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–36 Tractor 5–80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–37 Paper Motion Sensor 5–82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–38

Paper Out Mechanical Switch

5–84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–39 Paper Out Optical Sensor 5–86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–40 DC Power Supply Fuse 5–88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–41 Power Supply PCBA 5–90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–42 Power Supply 5–92. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–43

Rear Fan

5–94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–44

Logic PCBA

5–98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–45 Hammer Driver PCBA 5–100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–46

Hammer Bank Cable Harness

5–102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

APPENDICES

Appendix A: Prom Kit Applications A–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix B: PCBA Jumper Location Guide

B–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix C: Parts List C–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P300/P600iv

List of Illustrations

Figure Title Page

1–1

Printer: Pedestal Model and XQ Cabinet Model

1–3. . . . . . . . . . . . . . . . . . . . . . . . .

1–2 External Controls and Indicators 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3 Internal Controls and Indicators 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–4

Controls and Indicators for Options on Pedestal Models

1–8. . . . . . . . . . . . . . . . . . .

2–1 Printer System Block Diagram 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2 Buffer Load State Block Diagram 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 Interface Block Diagram 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 Interface Timing 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 Dot Selection Block Diagram 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–6 Defining the Dot Matrix 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–7T

ypical Characters (Data Processing Mode)

2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–8 Elongated Character With and W

ithout Descenders

2–14. . . . . . . . . . . . . . . . . . . . . .

2–9 Dot Column and Character Column Timing for One Shuttle Cycle 2–16. . . . . . . . . .

2–10 Dot Column and Character Column Counter Block Diagram 2–17. . . . . . . . . . . . . . .

2–11 Plotting the Six Bit Code 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–12 Hammer Driver Block Diagram 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–13 Hammer Driver Circuit Timing 2–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–14 Safety Circuits 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–15

Hammer Reset T

imer 2–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–16 Dot Row Timing vs T

iming Disk and Cam Position

2–27. . . . . . . . . . . . . . . . . . . . . .

2–17 Operation of MPU Circuit 2–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–18 Hammer and Shuttle Arrangement 2–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–19 Print Hammer Action 2–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–20 Standard Character Formation 2–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–21 P600 Phase Fire Operation 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–22

Hammer Bank Shuttle Components

2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–23 Paper Feed Logic Block Diagram 2–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–24 Line Feed Operation Velocity Profile 2–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–25 Timing Sequence for Printing One Character Line 2–40. . . . . . . . . . . . . . . . . . . . . . .

2–26 Top–of–Form Counter Block Diagram 2–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–27 Top–of–Form Slewing Velocity Profile 2–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–28 Paper Feed to Top–of–Form Timing 2–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–29 EVFU Loading Block Diagram 2–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–30 EVFU Loading Sequence Timing Diagram 2–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–31 EVFU Channel Seek Block Diagram 2–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–32 EVFU Channel Seek Velocity Profile 2–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–33 EVFU in Binary Count Mode 2–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–34 Paper T

ransport Components

2–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–35 Paper Motion Detector Diagram 2–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–36 Paper Feed Control Circuits Block Diagram 2–55. . . . . . . . . . . . . . . . . . . . . . . . . . . .

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