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Phaser 840 and 850 Color Printers
Scratches parallel to the long axis of printing, particularly with film
Usually caused by foreign debris in the
paper path. The scratch extends into
non-printed areas.
1.
Run a transparency through the
manual feed to see if the scratch
appears on the print. If it does not,
the scratch occurred in the paper
pick and early transport of the
transparency film.
2.
A scratch or smear can be caused
by debris built up on the paper
preheater heating surfaces. Run
the front panel cleaning procedure
Remove Ink smears
. Force a sheet
of thick 65- to 80-lb. paper through
the paper preheater to “buff” the
paper preheater heating surfaces.
With the leading and trailing ends
of the sheet of paper extending
from the entry and exit of the paper
preheater, gently pull the sheet of
paper back and forth several times
and then remove the sheet of paper.
Be careful of the paper-sensor flags.
3.
Clean the stripper fingers or the rapid release guide.
Printing too light or too dark
1.
Make sure the printer is correctly reading the type of tray installed and
that the tray is correctly set for the media loaded in it. Printing on paper
in transparency mode significantly darkens a print. Try a different color
correction setting.
2.
Perform the procedure, “Printhead-to-drum spacing adjustment
(Phaser 840 printer)” on page 102.
3.
Verify that the printhead setting “Head Adjust,” in the hidden service
menu is set to 128.
0388-68
Summary of Contents for Phaser 840
Page 11: ...xii Phaser 840 and 850 Color Printers ...
Page 65: ...54 Phaser 840 and 850 Color Printers ...
Page 101: ...90 Phaser 840 and 850 Color Printers ...
Page 125: ...114 Phaser 840 and 850 Color Printers ...
Page 134: ...Service Guide 123 Clearing PostScript NVRAM menu item ...
Page 135: ...124 Phaser 840 and 850 Color Printers ...
Page 166: ...Service Guide 155 Figure 1 Cabinet FRUs 7 5 6 8 1 2 4 0388 21 3 9 9 ...
Page 170: ...Service Guide 159 Figure 3 Paper path FRUs 0388 80 2 1 5 11 10 9 12 6 4 3 7 13 8 11a 11b ...
Page 172: ...Service Guide 161 Figure 4 Motor and fan FRUs 0388 14 7 4 3 5 6 2 1 ...
Page 174: ...Service Guide 163 Figure 5 Circuit board FRUs 4 3 5 2 1 9 7 6 8 10 11 13 0388 81 12 7a ...
Page 176: ...Service Guide 165 Figure 6 Solenoid and clutch FRUs 4 5 3 2 1 0388 23 ...
Page 182: ...Service Guide 171 Figure 9 High capacity PaperTray 0388 65a 1 2 ...