Printronix P3000 Series User manual

P3000 Printer
Maintenance Manual
R

P3000 Printer
Maintenance Manual
R
P/N 1 11839–001, 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.
All rights reserved. Revision C. January 1996.

17500 Cartwright Road, P.O. Box 19559
Irvine, California 92713
Telephone [phone] FAX [phone]
Technical Support (714) 221–2686
COPYRIGHT 1988, 1989, 1996, PRINTRONIX, INC.

iP3000 Maintenance
Table of Contents
Paragraph Title Page
CHAPTER l
MAINTENANCE O VERVIEW
1-1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2 P
rinter Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3 Operation 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 2
PRINCIPLES OF OPER ATION
2-1 General 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2 F
unctional Ele ents 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3 P
aper T ransport 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4 P
rinting Mechanis 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5
Controller PCBA 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
Mechanis Driver PCBA 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7 P
ower Supply PCBA 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 3
PREVENTIVE MAINTENANCE
3-1 General 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2 P
reventive Maintenance Checks and Service (PMCS) 3-1. . . . . . . . . . . . . .
3-3 Inspection 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4 Cleaning 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5 P
aper F eed Belt T ension Check 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6 Lubrication 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 4
TROUBLESHOOTIN
4-1 General 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2 Co on Causes of Malfunctions 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3
Internal T esting 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-4 F
ault Isolation 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 5
CORRECTIVE MAINTENANCE
Section I. GENER AL
5-1 Introduction 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2 Tools, T
est Equip ent, and Supplies 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section II. ALIGNMENTS AND ADJUSTMENTS
5-3 P aper Scale 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4
Ha er T ips 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5
Ha er Spring R etensioning 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 Bu pers 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7
Stroke T i ing 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8
Ha er Phasing 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P3000 Maintenanceii
Table of Contents
Paragraph Title Page
5-9 T
i ing Belt T ension A djust ent 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10 P
aper Drive Motor Pulley Align ent 5-14. . . . . . . . . . . . . . . . . . . . . . . . . .
5-11
Spline Shaft Skew A djust ent 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12 Platen Angle A djust ent 5-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13
Platen Gap A djust ent 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-14
Ribbon Guide Align ent 5-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section III. REPLA CEMENT
5-15 Cabinet 5-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-16
Control P anel 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-17 Cover 5-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-18
Display Control P anel 5-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-19
Control P anel Cable 5-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-20
Controller PCBA 5-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-21
Mechanis Driver PCBA 5-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-22 P
ower Supply PCBA 5-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-23
Shuttle Cover 5-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-24 P
aper Scale 5-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-25
Motherboard PCBA 5-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-26
I/O Cable Asse bly 5-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-27
Shuttle Asse bly 5-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-28
Ha er Bank Cable Asse bly 5-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-29 Ha er Spring 5-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-30
Ha er Coil 5-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-31 Encoder 5-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-32
Encoder PCBA 5-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-33 Bu per 5-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-34 P
aper F eed T i ing Belt 5-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-35 P aper Drive Motor 5-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-36
Spline Shaft 5-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-37
Support Shaft 5-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-38 Tractor 5-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-39 P
aper Ironer 5-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-40
Platen 5-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-41
Interlock Cable Asse bly 5-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-42 P
aper Detect Switch 5-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-43
Ribbon Drive Motor 5-78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-44
Ribbon Guide 5-80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-45
Blower Asse bly 5-82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-46 Fan 5-84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-47
Circuit Breaker 5-86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-48 A
C Input Filter 5-88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-49 P
aper F eed Motor Pulley 5-90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iiiP3000 Maintenance
Table of Contents
Paragraph Title Page
APPENDICES
Appendix A Electronic Drawings A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B P arts List B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index I-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Tables
Table Title Page
1-1
External Controls and Indicators 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2
Internal Controls and Indicators 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3
Controls and Indicators for 3287 Option 1-8. . . . . . . . . . . . . . . . . . . . . . . . .
2-1
Dot Matrices vs Speed/Density 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1 P
reventive Maintenance Checks and Service 3-1. . . . . . . . . . . . . . . . . . . . . .
3-2
Physical Inspection 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1 Fault Codes 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2
Suppli ental T ests 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3
Malfunction Sy pton Index 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1 R
eco ended T ools, T est Equip ent, and Supplies 5-2. . . . . . . . . . . . . . .

P3000 Maintenanceiv
List of Illustrations
Figure Title Page
1-1 P
rinter with P edestal 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2
External Controls and Indicators 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3
Internal Controls and Indicators 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4
Controls and Indicators for 3287 Option 1-9. . . . . . . . . . . . . . . . . . . . . . . . .
2-1 P
rinter F unctional Block Diagra 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2 P
aper T ransport 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3 P
rinting Mechanis 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
Ha er and Shuttle Arrange ent, Cross Section 2-6. . . . . . . . . . . . . . . . .
2-5 P
rint Ha er A ction 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
Standard Character F or ation 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7
Character F or ation by One Ha er 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8 T
ypical Character Dot P atterns, By Mode 2-10. . . . . . . . . . . . . . . . . . . . .
2-9
Controller Block Diagra 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-10
Mechanis Driver Block Diagra 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-11
Ha er Bank L ogic, Drivers, and W avefor s 2-16. . . . . . . . . . . . . . . . . . .
2-12
Ribbon Driver Circuit 2-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
Cleaning Interior of Cabinet 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2
Cleaning Ha er Bank Asse bly 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3
Cleaning P aper Ironer 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4
Cleaning F an 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5 P
aper F eed Belt T ension Check 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1
All Indicators Co e on and Stay on at P ower-up 4-7. . . . . . . . . . . . . . . . .
4-2
No Indicators Co e on at P ower-up 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3
Indicators on Both Control P anels Operate I properly 4-11. . . . . . . . . . . .
4-4
Switches or Indicators Operate I properly on F ront
Control P anel Only 4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-5
Digital Display Operates I properly 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . .
4-6
CHECK Indicator Flashes--Display Shows
FAULT CONDITION P APER OUT 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . .
4-7
CHECK Indicator Flashes--Display Shows
FAULT CONDITON PLATEN OPEN 4-16. . . . . . . . . . . . . . . . . . . . . . . . .
4-8
CHECK Indicator on Continuously--Display Shows
FAULT CONDITION DCU RAM, FONT PROM or MCU RAM 4-18. .
4-9 P
aper Doesn't F eed at All 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vP3000 Maintenance
List of Illustrations
Figure Title Page
4-10 P
aper F eeds Erratically 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-11 P
aper Drags 4-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-12
Set T op-of-F or Does not Operate 4-28. . . . . . . . . . . . . . . . . . . . . . . . . .
4-13
Ribbon Does not Move at All 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-14
Ribbon F olds Over 4-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-15
Ribbon Does Not R un S oothly 4-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-16
Ribbon Does Not Change Direction at End 4-34. . . . . . . . . . . . . . . . . . . . .
4-17
Shuttle Does Not Move at All 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-18
Shuttle Ja s or Moves too Slowly 4-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-19
Shuttle Moves Erratically 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-20
Shuttle Move ent P roduces Knocking Sound 4-43. . . . . . . . . . . . . . . . . . . .
4-21 P
rinter Does Not P rint at All 4-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-22 P
rinter F ails to P rint Only When Controlled by Host Co puter 4-45. . . . .
4-23
Missing Characters Exa ple 4-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-24
Characters Missing Consistently 4-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-25
Characters Missing R ando ly 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-26
Missing Dots Exa ple 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-27
Consistent Dropout of Dots 4-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-28 R
ando Dropout of Dots 4-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-29
Characters Light or S eared Exa ple 4-57. . . . . . . . . . . . . . . . . . . . . . . . .
4-30
Character P ositions Light or S eared (Dragging Ha er) 4-58. . . . . . . .
4-31
Dots Misplaced 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-32
I proper P rint Density Exa ple 4-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33
I proper P rint Density 4-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-34
I proper Horizontal Align ent Exa ple 4-63. . . . . . . . . . . . . . . . . . . . . . .
4-35
I proper V ertical Align ent Exa ple 4-64. . . . . . . . . . . . . . . . . . . . . . . . .
4-36
I proper Horizontal or V ertical Align ent 4-65. . . . . . . . . . . . . . . . . . . . . .
4-37
Characters Misfor ed V ertically Exa ple 4-66. . . . . . . . . . . . . . . . . . . . . . .
4-38
Characters Misfor ed V ertically 4-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-39
Co pacted P rint Exa ple 4-68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-40
Co pacted P rint 4-69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-41
Garbled P rint and/or Incorrect F ont 4-71. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-42
Expected Data Strea P rintout 4-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-43
Blower Motor Not Operating 4-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1 P
aper Scale A djust ent 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2
Ha er T ip Align ent 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3
Ha er Spring R etensioning 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4
Bu per A djust ent 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P3000 Maintenancevi
List of Illustrations
Figure Title Page
5-5 T
i ing Belt A djust ent 5-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 P
aper Drive Motor Pulley Align ent 5-15. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7
Spline Shaft Skew A djust ent 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8
Platen Angle A djust ent 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-9
Platen Gap A djust ent 5-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10
Ribbon Guide Align ent 5-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11
Cabinet R e oval/Installation 5-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12
Control P anel R e oval/Installation 5-27. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13 Cover Re oval/Installation 5-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-14 Display Control P anel R e oval/Installation 5-31. . . . . . . . . . . . . . . . . . . . .
5-15
Control P anel Cable Re oval/Installation 5-33. . . . . . . . . . . . . . . . . . . . . . .
5-16
Controller and Mechanis Driver R e oval/Installation 5-35. . . . . . . . . . .
5-17
Controller PROM L ocations 5-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-18 P
ower Supply PCBA R e oval/Installation 5-39. . . . . . . . . . . . . . . . . . . . . . .
5-19
Shuttle Cover and P aper Scale R e oval/Installation 5-41. . . . . . . . . . . . . .
5-20
Motherboard PCBA R e oval/Installation 5-43. . . . . . . . . . . . . . . . . . . . . . .
5-21 I/O Cable Re oval/Installation 5-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-22
Shuttle Asse bly R e oval/Installation 5-47. . . . . . . . . . . . . . . . . . . . . . . . .
5-23
Ha er Bank Cable Asse bly R e oval/Installation 5-49. . . . . . . . . . . . .
5-24
Ha er Spring R e oval/Installation 5-51. . . . . . . . . . . . . . . . . . . . . . . . . .
5-25
Ha er Coil R e oval/Installation 5-53. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-26
Encoder R e oval/Installation 5-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-27
Encoder PCBA R e oval/Installation 5-57. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-28
Bu per R e oval/Installation 5-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-29 P
aper F eed T i ing Belt R e oval/Installation 5-61. . . . . . . . . . . . . . . . . . . .
5-30 P
aper Drive Motor R e oval/Installation 5-63. . . . . . . . . . . . . . . . . . . . . . . .
5-31
Spline Shaft R e oval/Installation 5-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-32
Support Shaft R e oval/Installation 5-67. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-33 P
aper Ironer R e oval/Installation 5-69. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-34
Platen R e oval/Installation 5-71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-35
Interlock Cable Asse bly R e oval/Installation 5-75. . . . . . . . . . . . . . . . . .
5-36 P
aper Detect Switch R e oval/Installation 5-77. . . . . . . . . . . . . . . . . . . . . . .
5-37
Ribbon Drive Motor R e oval/Installation 5-79. . . . . . . . . . . . . . . . . . . . . .
5-38
Ribbon Guide R e oval/Installation 5-81. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-39
Blower Asse bly R e oval/Installation 5-83. . . . . . . . . . . . . . . . . . . . . . . . .
5-40 F
an R e oval/Installation 5-85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-41
Circuit Breaker R e oval/Installation 5-87. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-42 A
C Input Filter R e oval/Installation 5-89. . . . . . . . . . . . . . . . . . . . . . . . . . .
5-43 P
aper F eed Motor Pulley R e oval/Installation 5-91. . . . . . . . . . . . . . . . . . .

viiP3000 Maintenance
ABOUT THIS MANUAL
This anual has been organized and written to ake it easy to use. The following infor ation will
help you use this P3000 Maintenance Manual.
What This Manual Contains
This anual contains the following infor ation. Consult your table of contents to locate this infor Ć
ation.
Introduction - P rovides brief printer description.
Principles of Operation - Describes functional operation of printer through the use of
block
diagra s and associated text.
Preventive Maintenance - Lists detailed procedures required to aintain nor al printer
operation.
Troubleshooting - P resents fault isolation procedures required to deter ine the source of
co on alfunctions.
Corrective Maintenance - Presents procedures for printer adjust ent and align ent
and
replace ent of faulty hardware.
Electronic Drawings - Electronic drawings and sche atics required for field ainteĆ
nance
are included here.
Parts List - A parts lists, cross referenced to Chapter 5, Section III, is included here.
Controls and Indicators
Throughout this anual, in text, controls and indicators are printed exactly as they appear on the
printer, with all capital letters. Controls and indicators that do not have labeled na es are given
functional na es that are printed with the first letter of each word capitalized. For exa ple, the
POWER switch has two settings, ON and OFF. The For s Thickness Adjust ent Lever is operĆ
ated
by raising and lowering.
Warnings, Cautions, and Notes
In this anual, extra infor ation is given under the headings WARNING, CAUTION, AND
NOTE.
They are set off fro the text around the and appear in special typefaces. W arnings give
infor ation about conditions that could lead to injury. Cautions provide infor ation about condi Ć
tions that could lead to equip ent da age. Both warnings and cautions are printed in bold type.
Notes
provide extra infor ation and are printed in italics.
What This Manual Does Not Contain
Detailed, specific infor ation which appears in the User's R eference Manual will not be repeated
in the aintenance anual.

P3000 Maintenanceviii

1-1P3000 Maintenance Overview
CHAPTER l
MAINTENANCE OVERVIEW
1-1. Introduction
This anual contains infor ation required to aintain and repair the Printronix P3040
P
rinter (hereafter referred to as the P3000 Series, or si ply, the printer).
The following docu ents provide detailed infor ation which supple ents this anual.
a. P3000 P rinter Operator's Guide, P/N 111837-001.
Contains instructions for unpacking, installing, and operating the printer.
b. P3000 P rinter User's R eference Manual, P/N 111838-001.
Describes functions and applications available for the P3000 P rinter.
1-2. Printer Description (Figure 1-1)
a. eneral
The Printronix P3000 Series P rinter is a ulti-purpose, dot atrix line printer designed
to produce labels and characters, as well as the standard data processing and co pressed
print character lines and graphics at various densities.
b. Standard F eatures
l. Configurable for P rintronix P Series atrix line printer or serial atrix printer con Ć
trol
code protocols
2. Multi-application character printing
3. Graphics plotting
4. Dyna ic font selection:
(a) Selectable pitch - expanded, nor al, and co pressed
(b) Shadow printing
(c) Bold printing
(d) A uto underlining
(e) Superscripts and subscripts
5. Double high characters
6. Selectable for s length
7. Nonvolatile electronic vertical for atting
8. R esident international character sets

P3000 Maintenance Overview1-2
1-2. Printer Description-continued
b. Standard F eatures-continued
ă9. Self-test and diagnostics
10. T est pattern printing
11. Configuration printout
12. Datastrea HEX code printout
13. R esident serial and parallel interfaces
14. Selectable alternate horizontal and vertical dot densities
15. Configurable for 13.2 or 13.6 inch print width
c. Optional Features
ă1. Intelligent Graphics P rocessor (IGP)
(a) F or s generation
(b) Bar code printing
(c) Expanded character printing
(d) R everse i age printing
(e) R otated character printing
(f) L ogo generation
ă2. Optional character sets
ă3. IBM interfaces
(a) 3282/3287
(b) 5225/5224
ă4.
Ribbon fault detector
1-3. Operation
a. Operating P rocedures
For detailed operating instructions refer to P3000 Printer Operator's Guide, P/N
111837-001.
b. Controls and Indicators
NOTE: The following tables contain a brief summary of control and indicator
functions. F or a detailed discussion, refer to the User s R eference Manual. F or
optional controls and indicators refer to the PI 3287 User s R eference Manual
(P/N 108174-001).
1. External Controls and Indicators. External controls and indicators are illustrated in
Figure 1-2 and described in T able 1-1.
2.
Internal Controls and Indicators. Internal controls and indicators are illustrated in
Figure
1-3 and described in T able 1-2.
3. Controls and Indicators for Options. Printers configured to e ulate an IBM 3287
will have external controls and indicators as shown in Figure 1-4 and described in
Table 1-3.

1-3P3000 Maintenance Overview
Figure 1-1. P rinter with P edestal

P3000 Maintenance Overview1-4
Table 1-1. External Controls and Indicators
1
2
3
5
4
ON/OFF
ON LINE
switch
ON LINE
indicator
CHECK
indicator
CLEAR
switch
Applies and re oves ac power to printer
Sets printer online or offline.
Illu inates steadily to indicate printer online
(ready for co puter essages).
Flashes to indicate printer offline (not ready
to accept essages).
Illu inates to indicate printer proble . Steady
light indicates service is required. Flashing light
indicates operator correctable proble . Lighting
of indicator is acco panied by display of essage
on internal display panel (see Table 4-1)
Resets check circuitry. Used to clear check
indicators after corrective action.
Key
(Fig 1-2) Control or Indicator Function
6
7
8
9
6/8LPI
switch
8LPI
indicator
PAPER ADV
switch
VFU
indicator
Selects line spacing of six lpi or eight lpi.
Illu inates when alternate lpi selected
Moves paper one line when pressed o entarily.
NOTE:
Top of form must be reset each time new paper
is loaded (see operator s guide).
Illu inates when EVFU is loaded.
Moves paper to top of for when pressed for ore
than 0.5 second.

1-5P3000 Maintenance Overview
ON LINE CHECK 8 LPI VFU
CLEAR
357 9
2468
ON LINE 6/8 LPI PAPER ADV
Figure 1-2. External Controls and Indicators

P3000 Maintenance Overview1-6
Table 1-2. Internal Controls and Indicators
NOTE
: The following electronic controls function only when the printer is of Ć
fline.
Key
(Fig 1-3) Control or Indicator Function
ELECTRONIC
2
3
4
5
6
7
8
9
1
UP
switch
NEXT
switch
R/S
switch
F/L
switch
MODE
switch
ENTER
switch
PREV
switch
DOWN
switch
Display
Panel
Steps display up to next enu
Used in conjunction with PREV switch to display in-
Starts or stops certain printer functions.
Used to select for length.
Used to enter a displayed value into e ory.
Used in conjunction with NEXT switch to display in-
Steps display down to next enu.
Displays essage for print ode, for length,
MECHANICAL
10
11
12
13
Tractors
Vertical Align ent
Knob (Spline Shaft
Knob)
For s Thickness
(Platen) Lever
Top of For
Pointer (indicator
Provide horizontal positioning of for s.
Manually advances for s.
Adjusts platen opening to allow for paper thickness
Provides reference when setting top of for after
Opens paper path for insertion/re oval of paper.
14 For s Thickness
Indicator Indicates setting of platen lever.
fault conditions, test patterns, or configuration options.
For details, refer to User's Reference Manual.
A
or ultiple copies.
P
reloading paper.
on tractor doors)
dividual configuration para eters and the current values
fro within various enus.
Selects type of character print or density of graphic plot.
F or details on how to select ode, refer to Operator's
Guide.
dividual configuration para eters and the current values
fro within various enus.
15 Horizontal Vernier
Adjust ent Knob Provides fine horizontal positioning when tractors are
locked.

1-7P3000 Maintenance Overview
Figure 1-3. Internal Controls and Indicators

P3000 Maintenance Overview1-8
Table 1-3. Controls and Indicators for 3287 Option
NOTE:
Only those controls and indicators that are not present on the standard
panel (F igure 1-3) are discussed below .
Key
(Fig 1-4) Control or Indicator Function
ELECTRONIC
2
3
4
5
6
7
8
1
HOLD
indicator
REPRINT/PA1
switch
CANCEL/PA2
switch
ALT MODE
switch
READY
indicator
ERROR
indicator
ALT
indicator
ENABLE/HOLD
switch
Indicates error condition exists.
Places printer in hold print ode following co pletion
of line being printed. When pressed a second ti e, en Ć
ables nor al operation.
Lights to indicate printer is in hold print ode.
Causes reprint of all data in interface buffer in non-
SCS odes. In SCS odes, sends intervention re Ć
quired essage to host processor. A ctive only in hold
print ode.
When used in conjunction with AL T MODE switch,
causes progra attention signal to be sent to host proc Ć
essor.
No effect in non-SCS odes. In SCS odes, causes
printing to stop and SCS print data to be cleared fro
buffer. A ctive only in hold print ode.
Causes alternate switch functions P A1 and P A2 to be-
co e active. A ctive only in hold print ode. P ressing a
second ti e deactivates P A1 and P A2.
Lights to show that printer is ready to print (not in
hold print ode).
Indicates alternate ode selected (P A1 and P A2 active).