Tektronix Phaser 340 Service Manual page 280

B
Test Patterns
Printers serial numbered BC xxxxx and up.
Service Test Print 1 - Jstep5 . While this print can
be printed in 300 dpi, it should only be printed and
interpreted in 600 x 300 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
B-6 Phaser 340 Color Printer
Test prints for printers serial-numbered and up (Version 2 printers).
BC xxxxx
Gaps
9100-113