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Service Guide
75
Oil streaks on print
Oil stains the edge of the print.
1.
Are the drum maintenance cam
roller and electric clutch operating
correctly? Test them using PC-
based diagnostics.
2.
Inspect the drum maintenance
drawer. Is the wiper blade
damaged? If necessary, replace the
drum maintenance drawer.
3.
Ensure the left and right drum
maintenance actuators operate
correctly when lifted by the cams
of the drum maintenance cam
roller.
Incomplete image transfer to paper
All of the image does not transfer to the
paper. Part of the image remains on the
drum to be picked up by a chase page
or the next print, usually caused by
insufficient or non-uniform drum
oiling.
1.
Inspect the drum-maintenance
drawer. Is the wiper blade
damaged? If necessary, replace the
drum-maintenance drawer.
2.
Inspect the drum-maintenance
system. Does the drum
maintenance roller contain
sufficient oil? Replace the drum-
maintenance roller, if necessary.
3.
Are the drum-maintenance cam
roller and electric clutch operating
correctly? Test them using PC-
based diagnostics.
0388-51
0388-72
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 ...