R
Maintenance Manual
P9212 Line Matrix Printer
P9212 Line Matrix Printer
Maintenance Manual
P/N 134630–001, Rev B
R
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 B. January 1996.
Trademark Acknowledgements
IPDS is a trademark of International Business Machines Corporation.
17500 Cartwright Road, P.O. Box 19559
Irvine, California 92713
Telephone (714) 863–1900 FAX (714) 660–8682
Technical Support (714) 221–2686
COPYRIGHT 1993, 1996, PRINTRONIX, INC.
Table of Contents
1
Overview
About This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Use This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings and Special Information 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing Conventions in this Manual 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls and Indicators 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Indicators 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Controls 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tools, Test Equipment, and Supplies 1–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Principles of Operation
Line Matrix Printing 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Hammer Bank 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Character Generation 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Operation 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 Architectures 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 (CCB, Triple I/O) 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212–CT 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 LMI (Quad I/O) 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 CTHI 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Elements of the Printer 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Control Panel 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Boards 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Communication with the Host and Operator 2–18. . . . . . . . . . . . .
Control Panel 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic UART (LMI models) 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floppy Disk Controller Module (LMI models) 2–18. . . . . . . . . . . . . . . . .
Printing 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents
i
Hammer Driver Interface Functions 2–19. . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Interface Functions 2–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Monitoring 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank and Hammer Driver Faults 2–21. . . . . . . . . . . . . . . . . . . .
Paper Faults 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon and Shuttle Faults 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB Hardware Summary 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Communicating With the Host Computer 2–24. . . . . . . . . . . . . . . . . . . . .
Communicating With the Operator 2–24. . . . . . . . . . . . . . . . . . . . . . . . . .
Printing 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Monitoring 2–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LMI Hardware Summary 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Communicating With the Host Computer 2–28. . . . . . . . . . . . . . . . . . . . .
Communicating With the Operator 2–29. . . . . . . . . . . . . . . . . . . . . . . . . .
Printing 2–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Monitoring 2–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanism Driver Board 2–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Drive System 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Velocity 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Tension 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start / Stop Ribbon 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Shuttle Drive System 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed System 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Paper Feed System 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Driver Board 2–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Driver Logic and Control 2–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Filtering 2–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank Cooling 2–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Power 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Mechanisms 2–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank, Shuttle, and MPU 2–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
Table of Contents
Ribbon Deck 2–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed Control 2–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Preventive Maintenance
Preventive Maintenance 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning the Printer 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Troubleshooting
Introduction 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault Messages 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48V Power Fail 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48 Volt Failed * 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB to Mech Err. 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCU RAM 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disk Read Error 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disk Write Error 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dynamic RAM Fault 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Font PROM 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ham. Bank Hot 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ham. Coil Open * 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ham. Coil Short * 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ham. Drv. Short * 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hmr Coil Too Hot 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hmr Driver Short 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Error 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mech Driver Hot * 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mech Driver Link * 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NVRAM 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off Line / Line Check Par. 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Line / Line Check Par. 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Jam 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Out 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents
iii
Platen Open 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Stall 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Fan * 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Jam 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Error * 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Symptoms Not Indicated by Fault Messages 4–28. . . . . . . . . . .
Troubleshooting Aids 4–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer Confidence Check 4–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB Diagnostic Check 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CTPC Diagnostic Check 4–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Self–Tests 4–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hex Code Printout 4–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASCII Character Set 4–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing Nonvolatile Memory (NVRAM) 4–41. . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Adjustments
Hammer Bank Service Position 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Spring Retensioning 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Tip Alignment 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Pickup Gap 5–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Pickup Phasing Adjustment 5–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed Belt Tension 5–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platen Gap 5–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Tracking Check and Adjustment 5–26. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Shuttle and Counterweight Preload 5–28. . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle and Counterweight Spring Adjustment 5–32. . . . . . . . . . . . . . . . . . . . . . .
Shuttle Belt Tension 5–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
Table of Contents
6 Replacement Procedures and Parts
Replacement Procedures
Blower Assembly 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Cooling Fan 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Card Cage Fan 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Panel 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Counterweight Assembly 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Shuttle) Cam and Flywheel 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Shock 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Cover Assembly 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Spring and Hammer Coil 6–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Panel and Cable Assembly 6–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Pickup Assembly (MPU) 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Wick 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed Motor and Belt 6–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Motion/Out Detector 6–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platen Open Motor and Belt 6–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platen Open Switch 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printed Circuit Board Assemblies (PCBAs) 6–32. . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply 6–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Hub 6–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Motor 6–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Motor 6–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Motor Belt 6–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tractor Assemblies 6–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illustrated Parts Lists
Printer Assembly 6–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Mechanism 6–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Deck 6–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tractor Shafts 6–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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v
Motors and Switches 6–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank Assembly 6–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Springs and Coils 6–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Counterweight Assembly 6–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Cam and Flywheel 6–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Card Cage and Control Panel (CCB) 6–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Card Cage and Control Panel (LMI) 6–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Assembly 6–60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply and I/O Assemblies 6–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Appendices
A Wire Data
B Signal Mnemonics and Acronyms
C PROM and Chip Locations
D Torque Table
E Metric Conversion Tables
F Printer Specifications
vi
Table of Contents
1 Overview
Chapter Contents
About This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Use This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings and Special Information 1–2. . . . . . . . . . . . . . . . . . . . . . .
Related Documents 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing Conventions in this Manual 1–3. . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Indicators 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Electrical Controls 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coax Electrical Controls 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Twinax Electrical Controls 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IPDS Electrical Controls 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Controls 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tools, Test Equipment, and Supplies 1–14. . . . . . . . . . . . . . . . . . . . . . . . .
Overview
1–1
About This Manual
This is a field service maintenance manual for the P9212 line matrix printer.
This manual is designed so that you can quickly locate maintenance
information.
How to Use This Manual
You can locate information three ways:
♦ Use the Table of Contents at the front of the manual.
♦ Use the Chapter Contents listed at the front each chapter.
♦ Use the Index at the back of the manual.
When following a maintenance procedure, read the entire procedure before
beginning the task. Gather all required tools and make sure you understand
all warnings and special information before you begin working on the printer.
(See below.)
Warnings and Special Information
For your safety and to protect valuable equipment, it is very important that
you read and comply with all information highlighted under special
headings. Special heading are defined below:
WARNING
A warning tells you of conditions that can harm you and damage the
printer.
CAUTION
A caution tells you of conditions that can damage the printer.
IMPORTANT
Important draws your attention to information vital to proper operation
of the printer.
NOTE: A note gives you helpful tips about printer operation and
maintenance.
1–2
Overview
Related Documents
This manual does not explain how to operate or configure the printer. For
that information, refer to the Operator’s Guide and Setup Guide that
accompany each model.
Information pertaining to printer control languages, emulations, and codes is
in the Impact Printer Programmer’s Reference Manual.
Printing Conventions in This Manual
Switches, indicators, and switch positions that are labeled on the printer are
printed in uppercase letters.
Example: Press the CLEAR switch.
Messages that appear on the liquid crystal display (LCD) are printed in
quotation marks.
Example: Press the CLEAR switch. “Off–Line” appears on the LCD.
Overview
1–3
Controls and Indicators
Standard Electrical Controls (Figure 1–1)
Switch or
Function
Indicator
NOTE: ON LINE and VIEW are the only switches that operate when the printer
is on–line. The other switches operate only when the printer is off–line.
Power Switch
Status lamps
LCD
ON LINE
FF Advances paper to top of form on next page.
NLQ
CLEAR
VIEW
Turns printer on and off: up = on, down = off. This
switch is also a circuit breaker.
On when the printer is on–line, off when printer is
off–line. Flash to indicate a fault or warning.
The Liquid Crystal Display (LCD) displays printer status
and error messages.
Toggles the printer on–line and off–line.
Toggles the printer font between NLQ–10 or DP–10.
Clears printer after a fault is corrected. Returns printer to
off–line state from within a configuration menu. Resets
printer to most recently saved configuration when
pressed simultaneously with ENTER switch.
Advances paper for viewing through cover window,
then returns paper to print position.
1–4
SET TOF
CONFIG
ENTER
Y
(UP)
B
(DOWN)
A
(PREV)
"
(NEXT)
Sets location of first line of print on a page.
Selects one of four predetermined printer configurations.
Enters displayed parameter into printer nonvolatile
memory. Must be unlocked before using.
Locks and unlocks ENTER switch when pressed with B
switch. Causes display of configuration menus,
submenus, and diagnostic tests.
See above.
Displays previous parameter in a configuration or
diagnostic test menu.
Displays next parameter in a configuration or diagnostic
test menu.
Overview
Printer Cover
On
Off
UP
NEXTPREV
DOWN
RAISE PRINTER
COVER TO USE
THESE SWITCHES
VIEW
SET
TOF
CONFIG
ENTER
Status LampsLiquid Crystal Display (LCD)
ON LINE FF CLEAR
NLQ
Figure 1–1. Standard Electrical Controls
Overview
1–5
Coax Electrical Controls (Figure 1–2)
Switch or
Indicator
Power Switch
Status lamps
LCD
ENABLE/HOLD
FORM FEED
INDEX
SETUP
CU
SCS
ALT
CHECK
TEST/ENTER
Function
Turns printer on and off: up = on, down = off. This switch is also a circuit breaker.
On when the printer is on–line, off when printer is off–line. Flash to indicate a fault or
warning.
The Liquid Crystal Display (LCD) displays printer status messages.
Toggles the printer between the enable and hold modes.
Advances paper to top of form on next page. Used with SETUP to set top of form.
Advances paper one line at a time.
Sets the logical print head to line one, column one. In hold mode, used with FORM FEED
to set top of form.
Lit when the printer communicates with the host computer.
Lit when the printer operates in SCS mode.
Lit when alternate switch functions are active.
Lit when an error occurs.
TEST prints an 80–column sliding alphabet test pattern. In program mode, ENTER
confirms a selected configuration value as the active value.
BUFRP
PA1
CANCL
PA2
FUNC
INSPC
Y
ADJUST
B
PGM
A
ALT
"
0 – 9
Numbered Switches
Prints the contents of the buffer. Press ALT, then PA1 to send Program Attention 1 (PA1)
message to the control unit.
Cancels a print job. Press ALT, then PA2 to send Program Attention 2 (PA2) message to
the control unit.
Locks and unlocks program mode.
Press and release to move paper up for inspection. (Press ADJUST to continue.) In hold
mode, moves paper up in steps of 1/72 inch. In alternate and program modes, moves
“up” in and displays menus and submenus.
Returns paper to print position after using INSPC. In hold mode, moves paper down in
micro–steps of one dot row. In configuration mode, moves paper down in of 1/72 inch
steps. In program mode, moves “down” in menus and submenus.
Puts the printer in program mode. In program mode, selects the previous option in a menu.
Activates control panel switches for alternate functions. In program mode, selects the next
option in a menu.
Enter numerical values when printer is in program mode. Numeric entries must total three
digits; use intial zero(s) if necessary.
1–6
Overview
Printer Cover
On
Off
4
INSPC
ALTPGM
8
ADJUST
5
9
RAISE PRINTER
COVER TO USE
THESE SWITCHES
TEST
ENTER
BUFRP
PA1
CANCL
PA2
FUNC
Status LampsLiquid Crystal Display (LCD)
6
SCS
7
CU
ALT CHECK
ENABLE/HOLD
FORM FEED SETUP
0123
INDEX
Figure 1–2. Coax Electrical Controls
Overview
1–7
Switch or
Indicator
Twinax Electrical Controls (Figure 1–3)
Function
Power Switch
Status lamps
LCD
ENABLE/HOLD
FORM FEED
INDEX
SETUP
LINE SYNC
SYS AVAIL
BUFFER PRINT
ATTN
TEST/ENTER
INSPC
ADJUST
Turns printer on and off: up = on, down = off. This switch is also a circuit breaker.
On when the printer is on–line, off when printer is off–line. Flash to indicate a fault or
warning.
The Liquid Crystal Display (LCD) displays printer status messages.
Toggles the printer between the enable and hold modes.
Advances paper to top of form on next page. Also used with SETUP to set top of form.
Advances paper one line at a time.
Sets the logical print head to line one, column one. In hold mode, used with FORM FEED
to set top of form.
Lit when there is activity on the twinax line.
Lit when the printer communicates with the host computer.
Lit when the buffer print option is turned on.
Lit when an error occurs.
TEST prints an 80–column sliding alphabet test pattern. In program mode, ENTER
confirms a selected configuration value as the active value.
Press INSPC to move paper up for inspection. Press again to return paper to print
position. Also used to check and adjust top of form.
CANCL
FUNC
Y
B
PGM
A
PRT 1
"
0 – 9
Numbered Switches
1–8
Cancels a print job from either enable or hold mode.
Press simultaneously with PGM to unlock program mode; then press PGM to enter
configuration menu. Press simultaneously with CANCL to lock program mode.
In hold mode, moves paper up in steps of 1/72 inch. In program mode, moves “up” in
and displays menus and submenus.
In hold mode, moves paper down in micro–steps of one dot row. In configuration mode,
moves paper down in of 1/72 inch steps. In program mode, moves “down” in menus and
submenus.
Puts the printer in program mode. In program mode, selects the previous option in a menu.
In hold mode. press to print one line of data. In program mode, selects the next option in a
menu.
Enter numerical values when printer is in program mode. Numeric entries must total three
digits; use intial zero(s) if necessary.
Overview
Printer Cover
On
Off
4
PRT1PGM
8
9
5
RAISE PRINTER
COVER TO USE
THESE SWITCHES
TEST
ENTER
INSPC
ADJUST
CANCL
FUNC
Status LampsLiquid Crystal Display (LCD)
6
SYS
LINE
7
SYNC
AVAIL
BUFFER
PRINT ATTN
ENABLE/HOLD
FORM FEED SETUP
0123
INDEX
Figure 1–3. Twinax Electrical Controls
Overview
1–9
IPDS Electrical Controls (Figure 1–4)
Switch or
Indicator
Power Switch
Status lamps
LCD
START/STOP
FF Advances paper to top of form on next page.
LF ↑ /LF ↓
SET TOF
LINE SYNC
SYS AVAIL
JOB IN PROGRESS
CX/SCS
TEST/ENTR
Function
Turns printer on and off: up = on, down = off. This switch is also a circuit breaker.
On when the printer is on–line, off when printer is off–line. Flash to indicate a fault or
warning.
The Liquid Crystal Display (LCD) displays printer status messages.
Toggles the printer on–line and off–line.
Advances paper one line at a time. Press with ALT to reverse one line.
Sets location of first line of print on a page.
Lit when there is activity on the line to the host computer.
Lit when the printer communicates with host. Not used on coax printers.
Lit when printer is receiving data or when data are in buffer.
Lit when a coax printer is on non–IPDS (SCS) mode.
Starts and stops tests in diagnostic mode. In configuration mode, enters displayed
parameter into printer memory.
EJECT
CAN/BPRT
ALT
UP
PA1
DWN
PA2
PGM
(PREV)
PRT1
(NEXT)
Interrupts a print job and feeds paper up for inspection.
Cancels a print job, an error message, and turns off audible alarm. Coax only: when
pressed with ALT, prints contents of buffer.
Enables alternate functions of LF ↓ , PR1, PA2, BPRT switches.
Moves paper up in micro–steps of one dot row. In configuration mode, moves “up” in
and displays menus, submenus, and diagnostic tests. Coax only: press with ALT to send
Program Attention 1 (PA1) signal to host.
Moves paper down in micro–steps of one dot row. In configuration mode, moves “down”
in and displays menus, submenus, and diagnostic tests. Coax only: press with ALT to
send Program Attention 2 (PA2) signal to host.
Puts the printer in program mode. In program mode, selects the previous option in a menu.
Prints one line of data. In program mode, selects the next option in a menu.
1–10
Overview
Printer Cover
On
Off
UP
PA1
PRT1PGM
(PREV)
(NEXT)
DOWN
PA2
RAISE PRINTER
COVER TO USE
THESE SWITCHES
TEST/ENTR
EJECT
CAN/BPRT
ALT
LINE
SYNC
SYS
AVAIL
JOB IN
PRORESSCXSCS
START
STOP TOF
Figure 1–4. IPDS Electrical Controls
Status LampsLiquid Crystal Display (LCD)
FF
LF↑
LF↓
SET
Overview
1–11
Mechanical Controls (Figure 1–5)
Control or
Indicator
Forms thickness
lever
Forms thickness
pointer and scale
Tractors (2)
Tractor locks (2)
Horizontal
adjustment knob
Vertical position
knob
Function
Sets platen for paper and forms of different
thicknesses. Must be raised to load paper
Indicates
thickness lever at A for thin (single–part) forms, B for
thicker forms, and so on.
Hold and feed paper.
Lock tractor on support shaft.
Allows fine positioning of left print mar
paper left or right.
Used to set top of form or first line to be printed. Rotate
to move paper vertically.
relative
thickness of paper
.
. Set the forms
gin. Moves
1–12
Overview
Tractor Lock
Horizontal
Adjustment
Knob
Forms
Thickness
Scale and Pointer
Forms
Thickness
Lever
Tractor Lock
Vertical
Adjustment
Knob
Tractor
Overview
Figure 1–5. Mechanical Controls
1–13
Tools, Test Equipment, and Supplies
The tools, test equipment, and supplies required for field level maintenance
of P9212 printers are listed below.
Item Part Number Recommended Item
Adapter, Torque Screwdriver —
Adjustable W
Anhydrous Alcohol — —
Diagonal Cutters
Digital Voltmeter — —
Driver, Torque Screwdriver — Utica TS35
Extension, 3 in., 3/8 Drive — —
Extension, 6 in., Torque Screwdriver — —
Feeler Gauge Set — Proto 000AA
Force Gauge — —
Hammer Tip Alignment Tool 132266–001 —
Hex Bit, 3/16 in., Torque Screwdriver —
Hex Bit, 3/32 in., Torque Screwdriver —
Hex Bit, 5/32 in., Torque Screwdriver —
Hex Bit, 5/64 in., Torque Screwdriver — —
Hex Key Set, 15 PC
IC Insertion/Extraction Tool — —
rench —
— Erem 91EH
—
Utica HW–18
Utica 91–4C
Utica W–8
Utica HW–4
Utica HW–6
McMaster–Carr Supply
Cat. No. 7125A1
,
1
Kimwipes — —
Lubricant 101805–001 —
Nut Driver Set — Xcelite P2120
Oscilloscope and Probes (≥35 MHz)
Pliers, Grip Ring — Truarc 1120
Pliers, Chain Nose
Ratchet, 3/8 in. Drive — —
Rule, Steel, 6 in.
Scale, Spring, 0 to 40 lbs. — —
Screwdriver
Screwdriver, Phillips —
Screwdriver, Phillips —
Screwdriver, Slot —
, Allen Hex
— —
— Erem 11DH
— General 616
— Xcelite 99PS40
Xcelite X100
Xcelite X102
Xcelite A184
1–14
Overview
Item Recommended ItemPart Number
Screwdriver, Slot —
Screwdriver, Stubby
tip–width
Shim, Antirotation (.010 in.) 131493–001 —
Shim, Antirotation (.005 in.) 131493–002 —
Shims, Counterweight 101564–001 —
Shims, Shuttle Assembly
Socket, 7/16 in., 3/8 in. Drive — —
Soldering Iron and Tips — —
Tool, Antirotation 134534–001 —
X–actoT
Knife and Blades
, 1.5 in shank, 0.25 in
— —
103422–001 —
— —
Xcelite R3164
Overview
1–15
1–16
Overview
2 Principles of Operation
Chapter Contents
Line Matrix Printing 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Hammer Bank 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Character Generation 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Operation 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 Architectures 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 (CCB, Triple I/O) 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212–CT 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 LMI (Quad I/O) 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P9212 CTHI 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Elements of the Printer 2–12. . . . . . . . . . . . . . . . . . . . . . . . . .
The Control Panel 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Boards 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Communication With the Host and Operator 2–18. . . . . .
Printing 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB Hardware Summary 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LMI Hardware Summary 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanism Driver Board 2–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Drive System 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed System 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Paper Feed System 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principles of Operation
2–1
Hammer Driver Board 2–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Driver Logic and Control 2–35. . . . . . . . . . . . . . . . . . . . . . .
Power Filtering 2–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank Cooling 2–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Power 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Mechanisms 2–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hammer Bank, Shuttle, and MPU 2–39. . . . . . . . . . . . . . . . . . . . . . .
Ribbon Deck 2–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Feed Control 2–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2
Principles of Operation
Line Matrix Printing
The 9212 creates characters and graphics by a printing technique called line
matrix printing. Line matrix printing consists of printing patterns of ink dots
on paper, an entire line at a time.
Each text character is stored in memory as a pattern of dots on a logical grid
called the dot matrix. (See Figure 2–1.) The actual ink dots are made by a
row of hammer springs mounted on a shuttle that sweeps rapidly back and
forth. Printer logic divides every printable line into horizontal dot rows. The
hammer springs put dots at the required positions for the entire line by
striking a moving ink ribbon and the paper.
0.01389 ”
0.00835
112
Column No.
0.10
”
”
First row and column
of next character.
First row and column of
next character line (at 6
LPI).
When the shuttle reaches the end of a sweep, it reverses direction, the paper
is advanced one dot row, and the hammer springs print the next row of dots
as the shuttle sweeps in the opposite direction. After a line of characters is
printed, hammer action stops and the paper advances to the first dot row of
the next print line. The number of dot rows allowed for line separation
depends on the vertical line spacing the user selects.
The dot patterns of characters vary according to the font selected. For
example, in the data processing (DP) font at a line spacing of six lines per
inch (lpi), the dot matrix contains 12 dot rows from the top of one character
line to the top of the next. (See Figure 2–1 and Figure 2–2.) At eight lpi there
are nine dot rows per character line, at nine lpi eight dot rows per character
line, and so on.
Lowest descender
dot line.
0.02 ”
Figure 2–1. A Dot Matrix
Principles of Operation
2–3
Elongated characters are made by printing all but the first and last dot rows
twice. (See Figure 2–3.)
Uppercase
(Reference)
Printed
with
underline
Underline Lowercase with Descender
Figure 2–2. Typical Characters
WITH UNDERLINE WITHOUT UNDERLINE
Dot Column
13579
Dot Row
1
2
2
’
3
’
3
4
4
’
5
’
5
6
’
6
7
7
’
8
’
8
9
Dot Row
1
2
2
’
3
’
3
4
4
’
5
’
5
6
’
6
7
Dot Column
13579
2–4
Figure 2–3. Elongated Characters
Principles of Operation
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