Test Patterns - Tektronix Phaser 340 Service Manual

Appendix
B
Printers serial numbered B0 xxxxx to BB xxxxx .
Service Test Print 1 - Jstep5 . Printed in 600 dpi,
this print reveals problems with the x-axis motion of
the printhead.
Look for: Unusually wide white gaps or thick black
lines between the thin, vertical black lines. The thin
lines should be evenly spaced and consistent across
the width of the page.
Causes: Gaps could either be caused by a
defective x-axis drive or by something, such as a
wiring harness interfering with the horizontal
movement of the printhead. The ink loader, without
the top cover installed to secure it in place, may rest
too low and interfere with the printhead's motion. In
this case the ink loader should rest on extrusions on
the printer's side frames

Test Patterns

This appendix illustrates the service test prints produced by the printer. It
shows a number of defective prints and the reason for the defects. Chapter 6
Troubleshooting discusses solutions to the problems shown in this appendix. The
test prints 8 push the printer to the extremes of its performance to reveal possible
shortcomings. Note that defects revealed by the prints may not show up at all in
the course of ordinary printing. In servicing the printer, you should minimize
the defects shown by the prints but not necessarily eliminate them.
Test prints for printers serial numbered
B0 xxxxx to BB xxxxx (Version 1 printers)
Gaps
Service Manual
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9100-83
B-1