Important Maintenance Notes; About This Manual; How To Use This Manual; Notes And Notices - IBM 6400 series Maintenance Manual

Important Maintenance Notes

Failure to observe the following guidelines can result in damage to the
equipment.
To ensure the best performance of the printer, remember these important
maintenance concepts when you service the printer:
Do not adjust the platen gap unless the original shuttle frame assembly
or platen has been replaced with a new or rebuilt unit, or unless
instructed to do so in the troubleshooting chapter.
Never bend or "tweak" hammer springs. Always handle hammer springs
by the thick mounting base. The hammer springs and hammer tips are
delicate and precisely aligned.
Use only the ribbons specified in Appendix B. Use of incorrect ribbons
can lead to ink migration problems, degraded print quality, and expensive
damage to the printer.
Do not close the forms thickness lever too tightly. Closing the forms
thickness lever too tightly can lead to smearing, degraded print quality,
paper jams, and damage to the platen and shuttle assembly.

About This Manual

This is a field service maintenance manual. It is designed so that you can
quickly locate maintenance information.

How to Use This Manual

1. Find the procedure or information you need in the Table of Contents or
the Index.
2. Read the entire procedure before you do it.
3. Gather the parts and tools you will need.
4. Make sure you understand all safety notices before you start a task.
Notes and notices are defined below.
16
ATTENTION
Maintenance Overview