5-30 Phaser 8400/8500/8550 Color Printer
White Stripes (Pinstripes)
This print-quality problem has a series
of regularly spaced white stripes
approximately 6 mm (.25 in.) apart. If
the X-Axis Drive does not move the
printhead smoothly and evenly during
printing, vertical lines appear in the
print.
Step Questions and Actions Yes No
1
1. Print the service test print 13-19 Solid Fills,
to reveal an X-axis problem. See "Primary
Solid Fills 10x" on page 5-41 for more
information.
2. Are the pinstripes apparent on the test
prints?
Go to Step 2. Complete. The
problem is not
with the print
engine.
2
1. Verify the X-axis motion is operating
correctly and that poorly dressed cables,
loose screws, or mechanical failures are not
interfering.
2. Remove any obstructions or redress cables.
3. Did this correct the problem?
Complete. Go to Step 3.
3
1. Verify there are no wiring harnesses
interfering with the horizontal movement of
the printhead.
2. Redress any faulty wiring.
3. Repair or replace any defective part or
interference with the printhead.
4. Did this correct the problem?
Complete. Replace the
X-axis drive.
s8500-046
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