Xerox Phaser 8400 Service Manual page 238

Step Questions and Actions
4
1. If there are streaks on the front side only of a
2-sided print, the preheater may be scraping
ink off the print.
2. Look for ink shavings along the streaks on
the printed paper.
3. Clean the preheater using the Control Panel
Remove Print Smears
4. Did this correct the problem?
5
1. Possible weak or missing jet. Print the weak/
missing jet test print from the Control Panel,
see "Weak/Missing Jet" on page 5-33.
2. Did this correct the problem?
6
1. Possible discolored jet. Print the solid fill test
print, see "Black, Red, Green, Blue, Cyan,
Magenta, and Yellow Solid Fills" on
page 5-40.
2. Did this correct the problem?
7 1. The X-axis drive is not functioning correctly.
If the X-Axis Drive does not move the
printhead smoothly and evenly during
printing, vertical lines appear on the print.
For information about X-Axis Drive
problems, see "White Stripes (Pinstripes)"
on page 5-30.
2. Did this correct the problem?
8
1. Smears on a duplex print can be caused by
the paper preheater operating at a
temperature that is too high or debris is in
the duplex roller or duplex paper path
guides.
2. Run the service diagnostics Duplex Path
test to check the paper preheater's
temperature.
3. Is the operating temperature within the
correct value range?
5-12
function.
Phaser 8400/8500/8550 Color Printer
Yes
Complete. Go to Step 5.
Complete. Go to Step 6.
Complete. Go to Step 7.
Complete. Go to Step 8.
Replace the Replace the
preheater. electronics
module.
No